AD1584CRTZ-REEL7_技术文档

2.5 V to 5.0 V Micropower, Precision

Series Mode Voltage References

AD1582/AD1583/AD1584/AD1585

FEATURES

PIN CONFIGURATION

Series reference (2.5 V, 3 V, 4.096 V, 5 V)

Low quiescent current: 70 μA maximum

Current output capability: 5 mA

Wide supply range: V_IN= V_OUT+ 200 mV to 12 V

Wideband noise (10 Hz to 10 kHz): 50 μV rms

Specified temperature range: −40°C to +125°C

Compact, surface-mount SOT-23 package

AD1582/

V

1

OUT

AD1583/

AD1584/

AD1585

3

V

IN

TOP VIEW

(Not to Scale)

GND

2

Figure 1. 3-Lead SOT-23-3 (RT Suffix)

900

800

700

APPLICATIONS

Portable, battery-powered equipment; for example,

notebook computers, cellular phones, pagers, PDAs, GPSs,

and DMMs

600

500

1

SHUNT REFERENCE

Computer workstations; suitable for use with a wide range

of video RAMDACs

400

Smart industrial transmitters

PCMCIA cards

Automotive

300

200

100

AD1582 SERIES REFERENCE

Hard disk drives

3 V/5 V, 8-bit/12-bit data converters

0

2.7

5

V

(V)

SUPPLY

1

3.076kΩ SOURCE RESISTOR.

Figure 2. Supply Current (μA) vs. Supply Voltage (V)

GENERAL DESCRIPTION

The AD1582/AD1583/AD1584/AD1585 series mode devices

source or sink up to 5 mA of load current and operate efficiently

with only 200 mV of required headroom supply. These parts

draw a maximum 70 μA of quiescent current with only a

1.0 μA/V variation with supply voltage. The advantage of

these designs over conventional shunt devices is extraordinary.

Valuable supply current is no longer wasted through an input

series resistor, and maximum power efficiency is achieved at

all input voltage levels.

The AD1582/AD1583/AD1584/AD1585 are low cost, low power,

low dropout, precision band gap references. These designs are

available as 3-terminal (series) devices and are packaged in the

compact SOT-23, 3-lead surface-mount package. The versatility

of these references makes them ideal for use in battery-powered

3 V or 5 V systems where there can be wide variations in supply

voltage and a need to minimize power dissipation.

The superior accuracy and temperature stability of the AD1582/

AD1583/AD1584/AD1585 result from the precise matching and

thermal tracking of on-chip components. Patented temperature

drift curvature correction design techniques minimize the

nonlinearities in the voltage output temperature characteristic.

The AD1582/AD1583/AD1584/AD1585 are available in two

grades, A and B, and are provided in a tiny footprint, the SOT-

23. All grades are specified over the industrial temperature

range of −40°C to +125°C.

Table 1. AD158x Products, Three Electrical Grades

Initial Accuracy

Temperature

Coefficient

Electrical

Grade

AD1582 AD1583/AD1585 AD1584 (ppm°C)

B

0.08%

0.80%

0.10%

1.00%

0.10%

0.98%

50

A

100

Rev. I

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700 www.analog.com

AD1582/AD1583/AD1584/AD1585

TABLE OF CONTENTS

Features .............................................................................................. 1

Theory of Operation ...................................................................... 10

Applications Information.............................................................. 11

Temperature Performance......................................................... 11

Voltage Output Nonlinearity vs. Temperature ....................... 11

Output Voltage Hysteresis......................................................... 12

Supply Current vs. Temperature............................................... 12

Supply Voltage ............................................................................ 12

AC Performance ......................................................................... 12

Noise Performance and Reduction.......................................... 13

Turn-On Time ............................................................................ 13

Dynamic Performance............................................................... 14

Outline Dimensions....................................................................... 15

Ordering Guide .......................................................................... 16

Package Branding Information ................................................ 16

Applications....................................................................................... 1

Pin Configuration............................................................................. 1

General Description......................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

AD1582 Specifications................................................................. 3

AD1583 Specifications................................................................. 4

AD1584 Specifications................................................................. 5

AD1585 Specifications................................................................. 6

Absolute Maximum Ratings............................................................ 7

ESD Caution.................................................................................. 7

Terminology ...................................................................................... 8

Typical Performance Characteristics ............................................. 9

REVISION HISTORY

5/10—Rev. H to Rev. I

12/02—Rev. B to Rev. C

Changes to Figure 10...................................................................... 11

Updated Outline Dimensions....................................................... 16

Changes to Ordering Guide .......................................................... 16

Changes to Features ..........................................................................1

Changes to General Description .....................................................1

Changes to Specifications.................................................................2

Changes to Absolute Maximum Ratings........................................6

Replaced TPC 3 .................................................................................8

Changes to Temperature Performance Section.............................9

Replaced Figure 4 ..............................................................................9

Changes to Output Voltage Hysteresis Section .......................... 10

Updated SOT-23 Package.............................................................. 13

11/07—Rev. G to Rev. H

Deleted C Grade .................................................................Universal

Changes to VOERR Parameter....................................................... 3

Changes to Ordering Guide .......................................................... 16

6/06—Rev. F to Rev. G

Changes to Features.......................................................................... 1

Changes to General Description .................................................... 1

3/97—Revision 0: Initial Version

2/06—Rev. E to Rev. F

Updated Format..................................................................Universal

Changes to Features.......................................................................... 1

Changes to Table 6............................................................................ 7

Changes to Ordering Guide .......................................................... 16

6/05—Rev. D to Rev. E

Changes to Ordering Guide ........................................................... 7

Moved Package Branding Section.................................................. 7

6/04—Rev. C to Rev. D

Changes to Ordering Guide ............................................................ 6

Updated Outline Dimensions....................................................... 13

Rev. I | Page 2 of 16

AD1582/AD1583/AD1584/AD1585

SPECIFICATIONS

AD1582 SPECIFICATIONS

T_A= T_MINto T_MAX, V_IN= 5 V, unless otherwise noted.

Table 2.

AD1582A

Typ

AD1582B

Typ

Parameter

Min

Max

Min

Max

Unit

OUTPUT VOLTAGE (@ 25°C)

V_O

2.480

2.500

2.520

2.498

2.500

2.502

V

INITIAL ACCURACY ERROR (@ 25°C)

V_OERR

−20

+20

−2

+2

mV

−0.80

+0.80

100

−0.08

+0.08

50

%

OUTPUT VOLTAGE TEMPERATURE DRIFT

TEMPERATURE COEFFICIENT (TCV_O)

−40°C < T_A< +125°C

ppm/°C

40

35

100

18

15

50

ppm/°C

mV

0°C < T_A< 70°C

MINIMUM SUPPLY HEADROOM (V_IN– V_OUT

LOAD REGULATION

)

200

0 mA < I_OUT< 5 mA (−40°C to +85°C)

0 mA < I_OUT< 5 mA (−40°C to +125°C)

−5 mA < I_OUT< 0 mA (−40°C to +85°C)

0.2

0.4

0.25

0.45

2.7

0.2

0.4

0.25

0.45

2.7

mV/mA

−5 mA < I_OUT< 0 mA (−40°C to +125°C)

−0.1 mA < I_OUT< +0.1 mA (−40°C to +85°C)

−0.1 mA < I_OUT< +0.1 mA (−40°C to +125°C)

LINE REGULATION

3.5

V_OUT+ 200 mV < V_IN< 12 V

I_OUT= 0 mA

25

μV/V

RIPPLE REJECTION (ΔV_OUT/ΔV_IN)

V_IN= 5 V 100 mV (f = 120 Hz)

QUIESCENT CURRENT

80

dB

70

15

70

15

μA

mA

SHORT-CIRCUIT CURRENT TO GROUND

NOISE VOLTAGE (@ 25°C)

0.1 Hz to 10 Hz

70

50

70

50

μV p-p

μV rms

10 Hz to 10 kHz

TURN-ON SETTLING TIME TO 0.1%

C_L= 0.2 μF

100

μs

LONG-TERM STABILITY

1000 Hours @ 25°C

100

115

100

115

ppm/1000 hr

ppm

OUTPUT VOLTAGE HYSTERESIS

TEMPERATURE RANGE

Specified Performance (A, B, C)

Operating Performance (A, B, C)

−40

−55

+125

−40

−55

+125

°C

Rev. I | Page 3 of 16

AD1582/AD1583/AD1584/AD1585

AD1583 SPECIFICATIONS

T_A= T_MINto T_MAX, V_IN= 5 V, unless otherwise noted.

Table 3.

AD1583A

Typ

AD1583B

Typ

Parameter

Min

Max

Min

Max

Unit

OUTPUT VOLTAGE (@ 25°C)

V_O

2.970

3.000

3.030

2.997

3.000

3.003

V

INITIAL ACCURACY ERROR (@ 25°C)

V_OERR

−30

−1.0

+30

+1.0

100

−3

−0.1

+3

+0.1

50

mV

%

OUTPUT VOLTAGE TEMPERATURE DRIFT

TEMPERATURE COEFFICIENT (TCV_O)

–40°C < T_A< +125°C

ppm/°C

40

35

100

18

15

50

ppm/°C

mV

0°C < T_A< 70°C

MINIMUM SUPPLY HEADROOM (V_IN– V_OUT

LOAD REGULATION

)

200

0 mA < I_OUT< 5 mA (–40°C to +85°C)

0 mA < I_OUT< 5 mA (–40°C to +125°C)

–5 mA < I_OUT< 0 mA (–40°C to +85°C)

–5 mA < I_OUT< 0 mA (–40°C to +125°C)

0.25

0.45

0.40

0.6

2.9

3.7

0.25

0.45

0.40

0.6

2.9

3.7

mV/mA

–0.1 mA < I_OUT< +0.1 mA (–40°C to +85°C)

–0.1 mA < I_OUT< +0.1 mA (–40°C to +125°C)

LINE REGULATION

V_OUT+ 200 mV < V_IN< 12 V

I_OUT= 0 mA

25

μV/V

RIPPLE REJECTION (ΔV_OUT/ΔV_IN)

V_IN= 5 V 100 mV (f = 120 Hz)

QUIESCENT CURRENT

80

dB

70

15

70

15

μA

mA

SHORT-CIRCUIT CURRENT TO GROUND

NOISE VOLTAGE (@ 25°C)

0.1 Hz to 10 Hz

85

60

85

60

μV p-p

μV rms

10 Hz to 10 kHz

TURN-ON SETTLING TIME TO 0.1%

C_L= 0.2 μF

120

μs

LONG-TERM STABILITY

1000 Hours @ 25°C

100

115

100

115

ppm/1000 hr

ppm

OUTPUT VOLTAGE HYSTERESIS

TEMPERATURE RANGE

Specified Performance (A, B, C)

Operating Performance (A, B, C)

−40

−55

+125

−40

−55

+125

°C

Rev. I | Page 4 of 16

AD1582/AD1583/AD1584/AD1585

AD1584 SPECIFICATIONS

T_A= T_MINto T_MAX, V_IN= 5 V, unless otherwise noted.

Table 4.

AD1584A

Typ

AD1584B

Typ

Parameter

Min

Max

Min

Max

Unit

OUTPUT VOLTAGE (@ 25°C)

V_O

4.056

4.096

4.136

4.092

4.096

4.100

V

INITIAL ACCURACY ERROR (@ 25°C)

V_OERR

−40

+40

−4

+4

mV

−0.98

+0.98

100

−0.1

+0.1

50

%

OUTPUT VOLTAGE TEMPERATURE DRIFT

TEMPERATURE COEFFICIENT (TCV_O)

−40°C < T_A< +125°C

ppm/°C

40

35

100

18

15

50

ppm/°C

mV

0°C < T_A< 70°C

MINIMUM SUPPLY HEADROOM (V_IN– V_OUT

LOAD REGULATION

)

200

0 mA < I_OUT< 5 mA (−40°C to +85°C)

0 mA < I_OUT< 5 mA (−40°C to +125°C)

−5 mA < I_OUT< 0 mA (−40°C to +85°C)

0.32

0.52

0.40

0.6

3.2

4.1

0.32

0.52

0.40

0.6

3.2

4.1

mV/mA

−5 mA < I_OUT< 0 mA (−40°C to +125°C)

−0.1 mA < I_OUT< +0.1 mA (−40°C to +85°C)

−0.1 mA < I_OUT< +0.1 mA (−40°C to +125°C)

LINE REGULATION

V_OUT+ 200 mV < V_IN12 V

I_OUT= 0 mA

25

μV/V

RIPPLE REJECTION (ΔV_OUT/ΔV_IN)

V_IN= 5 V 100 mV (f = 120 Hz)

QUIESCENT CURRENT

80

dB

70

15

70

15

μA

mA

SHORT-CIRCUIT CURRENT TO GROUND

NOISE VOLTAGE (@ 25°C)

0.1 Hz to 10 Hz

110

90

110

90

μV p-p

μV rms

10 Hz to 10 kHz

TURN-ON SETTLING TIME TO 0.1%

C_L= 0.2 μF

140

μs

LONG-TERM STABILITY

1000 Hours @ 25°C

100

115

100

115

ppm/1000 hr

ppm

OUTPUT VOLTAGE HYSTERESIS

TEMPERATURE RANGE

Specified Performance (A, B, C)

Operating Performance (A, B, C)

−40

−55

+125

−125

−40

−55

+125

°C

Rev. I | Page 5 of 16

AD1582/AD1583/AD1584/AD1585

AD1585 SPECIFICATIONS

@ T_A= T_MINto T_MAX, V_IN= 6 V, unless otherwise noted.

Table 5.

AD1585A

Typ

AD1585B

Typ

Parameter

Min

Max

Min

Max

Unit

OUTPUT VOLTAGE (@ 25°C)

V_O

4.950

5.000

5.050

4.995

5.000

5.005

V

INITIAL ACCURACY ERROR (@ 25°C)

V_OERR

−50

−1.0

+50

+1.0

100

−5

−0.10

+5

+0.10

50

mV

%

OUTPUT VOLTAGE TEMPERATURE DRIFT

TEMPERATURE COEFFICIENT (TCV_O)

−40°C < T_A< 125°C

ppm/°C

40

35

100

18

15

50

ppm/°C

mV

0°C < T_A< 70°C

MINIMUM SUPPLY HEADROOM (V_IN– V_OUT

LOAD REGULATION

)

200

0 mA < I_OUT< 5 mA (−40°C to +85°C)

0 mA < I_OUT< 5 mA (−40°C to +125°C)

−5 mA < I_OUT< 0 mA (−40°C to +85°C)

0.40

0.6

0.40

0.6

4

0.40

0.6

0.40

0.6

4

mV/mA

−5 mA < I_OUT< 0 mA (−40°C to +125°C)

−0.1 mA < I_OUT< +0.1 mA (−40°C to +85°C)

−0.1 mA < I_OUT< +0.1 mA (−40°C to +125°C)

LINE REGULATION

4.8

V_OUT+ 200 mV < V_IN< 12 V

I_OUT= 0 mA

25

μV/V

RIPPLE REJECTION (ΔV_OUT/ΔV_IN)

V_IN= 6 V 100 mV (f = 120 Hz)

QUIESCENT CURRENT

80

dB

70

15

70

15

μA

mA

SHORT-CIRCUIT CURRENT TO GROUND

NOISE VOLTAGE (@ 25°C)

0.1 Hz to 10 Hz

140

100

140

100

μV p-p

μV rms

10 Hz to 10 kHz

TURN-ON SETTLING TIME TO 0.1%

C_L= 0.2 ꢀF

175

μs

LONG-TERM STABILITY

1000 Hours @ 25°C

100

115

100

115

ppm/1000 hr

ppm

OUTPUT VOLTAGE HYSTERESIS

TEMPERATURE RANGE

Specified Performance (A, B, C)

Operating Performance (A, B, C)

−40

−55

+125

−40

−55

+125

°C

Rev. I | Page 6 of 16

AD1582/AD1583/AD1584/AD1585

ABSOLUTE MAXIMUM RATINGS

Table 6.

Stresses above those listed under Absolute Maximum Ratings

may cause permanent damage to the device. This is a stress

rating only; functional operation of the device at these or any

other conditions above those indicated in the operational

section of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect

device reliability.

Parameter

Rating

V_INto Ground

Internal Power Dissipation¹

12 V

SOT-23-3 (RT-3)

400 mW

Storage Temperature Range

Specified Temperature Range

65°C to 125°C

AD1582RT/AD1583RT/

AD1584RT/AD1585RT

−40°C to +125°C

ESD CAUTION

Lead Temperature, Soldering

Vapor Phase (60 sec)

Infrared (15 sec)

215°C

220°C

¹Specification is for device in free air at 25°C; SOT-23 package, θ_JA= 300°C.

Rev. I | Page 7 of 16

AD1582/AD1583/AD1584/AD1585

TERMINOLOGY

Thermal Hysteresis (V_{O_HYS}

)

Temperature Coefficient (TCV_O)

The change of output voltage after the device is cycled through

temperatures from +25°C to −40°C to +85°C and back to +25°C.

This is a typical value from a sample of parts put through

such a cycle

The change of output voltage over the operating temperature

change and normalized by the output voltage at 25°C, expressed

in ppm/°C. The equation follows

V_O

(

T₂

)

−V_O

(

T₁

)

TCV_O

[

ppm/°C

]

=

×10⁶

V_{O _ HYS}=V_O

(

25°C

)

−V_{O _TC}

25°C −V_{O _TC}

V_O25°C

V_O

(

25°C

)

×

(T₂−T₁

)

V_O

(

)

×10⁶

where:

V_O(25°C) = V_O@ 25°C.

V_{O _ HYS}ppm

[

]

=

(

)

V_O(T₁) = V_O@ Temperature 1.

V_O(T₂) = V_O@ Temperature 2.

where:

V_O(25°C) = V_Oat 25°C.

_{O_TC}= V_Oat 25°C after temperature cycle at +25°C to −40°C to

V

Line Regulation (ΔV_O/ΔV_IN) Definition

+85°C and back to +25°C.

The change in output voltage due to a specified change in input

voltage. It includes the effects of self-heating. Line regulation is

expressed in either percent per volt, parts per million per volt,

or microvolts per volt change in input voltage.

Operating Temperature

The temperature extremes at which the device can still function.

Parts can deviate from their specified performance outside the

specified temperature range.

Load Regulation (ΔV_O/ΔI_LOAD

)

The change in output voltage due to a specified change in load

current. It includes the effects of self-heating. Load regulation

is expressed in either microvolts per milliampere, parts per

million per milliampere, or ohms of dc output resistance.

Long-Term Stability (ΔV_O)

Typical shift of output voltage at 25°C on a sample of parts

subjected to an operation life test of 1000 hours at 125°C.

ΔV_O= V_O

ΔV_Oppm

(

t₀

)

−V_O

V_Ot₀

V_O

(

t₁

−V_O

t₀

)

(

)

(t₁)

[

]

=

×10⁶

(

)

where:

V_O(t₀) = V_O@25°C at Time 0.

V_O(t₁) = V_O@ 25°C after 1000 hours of operation at 125°C.

Rev. I | Page 8 of 16

AD1582/AD1583/AD1584/AD1585

TYPICAL PERFORMANCE CHARACTERISTICS

0.40

0.35

0.30

0.25

0.20

0.15

0.10

0.05

0

22

20

18

16

14

12

10

8

AD1585

AD1582

6

4

2

0

2

4

6

8

10

12

–60 –50 –40 –30 –20 –10

0

10

20

30

40

50

V

(V)

ppm/°C

IN

Figure 3. Typical Output Voltage Temperature Drift Distribution

Figure 6. Load Regulation vs. V_IN

50

45

40

35

30

25

20

15

10

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

AD1582

AD1585

5

0

–1.0%

–0.6%

–0.2%

0.2%

0.6%

1.0%

–5

–4

–3

–2

–1

0

1

2

3

4

5

V

(ERROR)

I

(mA)

OUT

Figure 4. Typical Output Voltage Error Distribution

Figure 7. Line Regulation vs. I_LOAD

2.504

2.502

10k

2.500

2.498

2.496

I

= 1mA

OUT

I

= 0mA

OUT

1k

2.494

2.492

2.490

2.488

100

–40

–20

0

20

40

60

80

100

120

10

100

1k

FREQUENCY (Hz)

10k

100k

TEMPERATURE (°C)

Figure 5. Typical Temperature Drift Characteristic Curves

Figure 8. Noise Spectral Density

Rev. I | Page 9 of 16

AD1582/AD1583/AD1584/AD1585

THEORY OF OPERATION

The AD1582/AD1583/AD1584/AD1585 use the band gap

concept to produce stable, low temperature coefficient voltage

references suitable for high accuracy data acquisition compo-

nents and systems. These parts of precision references use the

underlying temperature characteristics of a silicon transistor’s

base emitter voltage in the forward-biased operating region.

Under this condition, all such transistors have a −2 mV/°C

temperature coefficient (TC) and a V_BEthat, when extrapolated

to absolute zero, 0 K (with collector current proportional to

absolute temperature), approximates the silicon band gap voltage.

By summing a voltage that has an equal and opposite tempera-

ture coefficient of 2 mV/°C with the V_BEof a forward-biased

transistor, an almost 0 TC reference can be developed. In the

AD1582/AD1583/AD1584/AD1585 simplified circuit diagram

shown in Figure 9, such a compensating voltage, V1, is derived

by driving two transistors at different current densities and

amplifying the resultant V_BEdifference (ΔV_BE, which has a positive

TC). The sum of V_BEand V1 (V_BG) is then buffered and amplified

to produce stable reference voltage outputs of 2.5 V, 3 V, 4.096 V,

and 5 V.

V

IN

R3

R4

OUT

R5

V

BG

+

R2

–

V

BE

R6

+

V1

–

R1

GND

Figure 9. Simplified Schematic

Rev. I | Page 10 of 16

AD1582/AD1583/AD1584/AD1585

APPLICATIONS INFORMATION

Duplication of these results requires a test system that is highly

accurate with stable temperature control. Evaluation of the

AD1582/AD1583/AD1584/AD1585 produces curves similar

to those in Figure 5 and Figure 11, but output readings can vary

depending on the test methods and test equipment used.

2.504

The AD1582/AD1583/AD1584/AD1585 are series references

that can be used for many applications. To achieve optimum

performance with these references, only two external compo-

nents are required. Figure 10 shows the AD1582/AD1583/

AD1584/AD1585 configured for operation under all loading

conditions. With a simple 4.7 ꢀF capacitor attached to the input

and a 1 ꢀF capacitor applied to the output, the devices can achieve

specified performance for all input voltage and output current

requirements. For best transient response, add a 0.1 ꢀF capacitor

in parallel with the 4.7 ꢀF capacitor. While a 1 ꢀF output capacitor

can provide stable performance for all loading conditions, the

AD1582/AD1583/AD1584/AD1585 can operate under low

(−100 ꢀA < I_OUT< +100 ꢀA) current conditions with just a

0.2 ꢀF output capacitor. The 4.7 ꢀF capacitor on the input can

be reduced to 1 μF in this condition.

2.502

2.500

2.498

2.496

2.494

2.492

Unlike conventional shunt reference designs, the AD1582/

AD1583/AD1584/AD1585 provide stable output voltages at

constant operating current levels. When properly decoupled,

as shown in Figure 10, these devices can be applied to any

circuit and provide superior low power solutions.

–40

–20

0

20

40

60

80

100

120

TEMPERATURE (°C)

Figure 11. Output Voltage vs. Temperature

VOLTAGE OUTPUT NONLINEARITY VS.

TEMPERATURE

1

+

AD1582/

AD1583/

AD1584/

AD1585

When using a voltage reference with data converters, it is

important to understand the impact that temperature drift can

have on converter performance. The nonlinearity of the reference

output drift represents additional error that cannot be easily

calibrated out of the overall system. To better understand the

impact such a drift can have on a data converter, refer to Figure 12,

where the measured drift characteristic is normalized to the

endpoint average drift. The residual drift error for the AD1582/

AD1583/AD1584/AD1585 of approximately 200 ppm demon-

strates that these parts are compatible with systems that require

12-bit accurate temperature performance.

V

3

V

IN

OUT

–

1µF

4.7µF

2

Figure 10. Typical Connection Diagram

TEMPERATURE PERFORMANCE

The AD1582/AD1583/AD1584/AD1585 are designed for

applications where temperature performance is important.

Extensive temperature testing and characterization ensure

that device performance is maintained over the specified

temperature range.

250

The error band guaranteed with the AD1582/AD1583/AD1584/

AD1585 is the maximum deviation from the initial value at 25°C.

Therefore, for a given grade of the AD1582/AD1583/AD1584/

AD1585, the designer can easily determine the maximum total

error by summing initial accuracy and temperature variation. For

example, for the AD1582BRT, the initial tolerance is 2 mV,

and the temperature error band is 8 mV; therefore, the reference

is guaranteed to be 2.5 V 10 mV from −40°C to +125°C.

200

150

100

50

Figure 11 shows the typical output voltage drift for the AD1582/

AD1583/AD1584/AD1585 and illustrates the methodology. The

box in Figure 11 is bounded on the x-axis by operating tempera-

ture extremes. It is bounded on the y-axis by the maximum

and minimum output voltages observed over the operating

temperature range. The slope of the diagonal drawn from the

initial output value at 25°C to the output values at +125°C and

−40°C determines the performance grade of the device.

0

–50

–25

0

25

50

75

100

TEMPERATURE (°C)

Figure 12. Residual Drift Error

Rev. I | Page 11 of 16

AD1582/AD1583/AD1584/AD1585

OUTPUT VOLTAGE HYSTERESIS

SUPPLY VOLTAGE

High performance industrial equipment manufacturers can

require the AD1582/AD1583/AD1584/AD1585 to maintain a

consistent output voltage error at 25°C after the references are

operated over the full temperature range. All references exhibit

a characteristic known as output voltage hysteresis; however, the

AD1582/AD1583/AD1584/AD1585 are designed to minimize

this characteristic. This phenomenon can be quantified by mea-

suring the change in the +25°C output voltage after temperature

excursions from +125°C to +25°C and from −40°C to +25°C.

Figure 13 displays the distribution of the AD1582/AD1583/

AD1584/AD1585 output voltage hysteresis.

One of the ideal features of the AD1582/AD1583/AD1584/AD1585

is low supply voltage headroom. The parts can operate at supply

voltages as low as 200 mV above V_OUTand up to 12 V. However,

if negative voltage is inadvertently applied to V_INwith respect to

ground, or any negative transient >5 V is coupled to V_IN, the

device can be damaged.

AC PERFORMANCE

To apply the AD1582/AD1583/AD1584/AD1585, it is impor-

tant to understand the effects of dynamic output impedance

and power supply rejection. In Figure 15, a voltage divider

is formed by the AD1582/AD1583/AD1584/ AD1585 output

impedance and by the external source impedance. Figure 16

shows the effect of varying the load capacitor on the reference

output. Power supply rejection ratio (PSRR) should be determined

when characterizing the ac performance of a series voltage

reference. Figure 17 shows a test circuit used to measure PSRR,

and Figure 18 demonstrates the ability of the AD1582/AD1583/

AD1584/AD1585 to attenuate line voltage ripple.

80

70

60

50

40

30

20

10

0

V

DC

LOAD

5V

2kΩ

10kΩ

2 × V

OUT

10kΩ

5µF

DUT

×1

±100µA

1µF

±2V

–700

–450

–200

50

ppm

300

550

Figure 15. Output Impedance Test Circuit

Figure 13. Output Voltage Hysteresis Distribution

SUPPLY CURRENT VS. TEMPERATURE

100

10

1

The quiescent current for the AD1582/AD1583/AD1584/

AD1585 varies slightly over temperature and input supply

range. Figure 14 illustrates the typical performance for the

AD1582/AD1583/AD1584/AD1585 reference when varying

both temperature and supply voltage. As is evident from

Figure 14, the AD1582/AD1583/AD1584/AD1585 supply

current increases only 1.0 ꢀA/V, making this device extremely

attractive for use in applications where there can be wide

variations in supply voltage and a need to minimize power

dissipation.

1µF CAP

AD1585

AD1582

100

0.1

10

100

1k

10k

100k

1M

FREQUENCY (Hz)

80

Figure 16. Output Impedance vs. Frequency

T

= +85°C

A

T

= +25°C

A

60

40

20

0

10kΩ

10V

5V ± 100mV

×1

±200mV

10kΩ

V

0.22µF

OUT

0.22µF

DUT

T

= –40°C

A

Figure 17. Ripple Rejection Test Circuit

3

4

5

6

7

(V)

8

9

10

11

V

IN

Figure 14. Typical Supply Current over Temperature

Rev. I | Page 12 of 16

AD1582/AD1583/AD1584/AD1585

100

90

80

70

60

50

40

30

20

10

0

100µV

10ms

100

90

AD1582

AD1585

10

0%

Figure 20. 1 Hz to 10 Hz Voltage Noise

1

10

100

1k

10k

100k

1M

FREQUENCY (Hz)

TURN-ON TIME

Figure 18. Ripple Rejection vs. Frequency

Many low power instrument manufacturers are concerned

with the turn-on characteristics of the components used in their

systems. Fast turn-on components often enable the end user to

save power by keeping power off when not needed. Turn-on

settling time is defined as the time required, after the application of

power (cold start), for the output voltage to reach its final value

within a specified error. The two major factors affecting this are

the active circuit settling time and the time required for the

thermal gradients on the chip to stabilize. Figure 21 shows the

turn-on settling and transient response test circuit. Figure 22

shows the turn-on characteristics of the AD1582/AD1583/

AD1584/AD1585. These characteristics are generated from cold-

start operation and represent the true turn-on waveform after

power-up. Figure 23 shows the fine settling characteristics of

the AD1582/AD1583/AD1584/AD1585. Typically, the reference

settles to within 0.1% of its final value in about 100 ꢀs.

NOISE PERFORMANCE AND REDUCTION

The noise generated by the AD1582/AD1583/AD1584/AD1585 is

typically less than 70 ꢀV p-p over the 0.1 Hz to 10 Hz frequency

band. Figure 19 shows the 0.1 Hz to 10 Hz noise of a typical

AD1582/AD1583/AD1584/AD1585. The noise measurement

is made with a high gain band-pass filter. Noise in a 10 Hz to

10 kHz region is approximately 50 ꢀV rms. Figure 20 shows the

broadband noise of a typical AD1582/AD1583/AD1584/AD1585.

If further noise reduction is desired, add a 1-pole, low-pass

filter between the output pin and ground. A time constant of

0.2 ms has a −3 dB point at roughly 800 Hz and reduces the

high frequency noise to about 16 V rms. It should be noted,

however, that while additional filtering on the output can

improve the noise performance of the AD1582/AD1583/

AD1584/AD1585, the added output impedance can degrade

the ac performance of the references.

The device can momentarily draw excessive supply current

when V_SUPPLYis slightly below the minimum specified level.

Power supply resistance must be low enough to ensure reliable

turn-on. Fast power supply edges minimize this effect.

10µV

1s

100

90

0V OR 10V

10kΩ

5V OR 10V

0V OR 5V

0V TO 10V

10kΩ

V

0.22µF

OUT

DUT

0.22µF

10

0%

Figure 21. Turn-On/Transient Response Test Circuit

Figure 19. 10 Hz to 10 kHz Wideband Noise

Rev. I | Page 13 of 16

AD1582/AD1583/AD1584/AD1585

20µs

5V

50µs

5V

100

90

100

90

10

0%

20µs

200mV

50µs

1V

Figure 22. Turn-On Characteristics

Figure 24. Line Transient Response

20µs

5V

20µs

5V

100

90

100

90

10

0%

1mV

20µs

5mV

20µs

Figure 23. Turn-On Settling

Figure 25. Load Transient Response (0 mA to 5 mA Load)

DYNAMIC PERFORMANCE

20µs

5V

Many ADCs and DACs present transient current loads to the

reference and poor reference response can degrade converter

performance. The AD1582/AD1583/AD1584/AD1585 provide

superior static and dynamic line and load regulation. Because

these series references are capable of both sourcing and sinking

large current loads, they exhibit excellent settling charac-

teristics.

100

90

10

0%

Figure 24 displays the line transient response for the AD1582/

AD1583/AD1584/AD1585. The circuit used to perform such

a measurement is shown in Figure 21, where the input supply

voltage is toggled from 5 V to 10 V, and the input and output

capacitors are each 0.22 μF.

5mV

20µs

Figure 26. Load Transient Response (0 mA to −1 mA Load)

Figure 25 and Figure 26 show the load transient settling cha-

racteristics for the AD1582/AD1583/AD1584/AD1585 when

load current steps of 0 mA to +5 mA and 0 mA to −1 mA are

applied. The input supply voltage remains constant at 5 V; the

input decoupling and output load capacitors are 4.7 μF and 1 μF,

respectively; and the output current is toggled. For both positive

and negative current loads, the reference responses settle very

quickly and exhibit initial voltage spikes of less than 10 mV.

Rev. I | Page 14 of 16

AD1582/AD1583/AD1584/AD1585

OUTLINE DIMENSIONS

3.04

2.90

2.80

1.40

1.30

1.20

3

2.64

2.10

1

2

0.60

0.45

1.03

0.89

2.05

1.78

1.02

0.54

REF

0.95

0.88

GAUGE

PLANE

1.12

0.89

0.100

0.013

0.180

0.085

0.51

0.37

SEATING

PLANE

0.25

0.60 MAX

0.30 MIN

COMPLIANT TO JEDEC STANDARDS TO-236-AB

Figure 27. 3-Lead Small Outline Transistor Package [SOT-23-3]

(RT-3)

Dimensions shown in millimeters

7” REEL 100.00

4.10

4.00

3.90

1.10

1.00

0.90

OR

14.40 MIN

13” REEL 330.00

1.55

1.50

1.45

1.10

1.00

0.90

2.05

2.00

1.95

0.35

0.30

0.25

1.50 MIN

7” REEL 50.00 MIN

2.80

2.70

2.60

13.20

13.00

12.80

OR

20.20

MIN

8.30

8.00

7.70

13” REEL 100.00 MIN

3.55

3.50

3.45

0.75 MIN

3.20

3.10

2.90

1.00 MIN

9.90

8.40

6.90

DIRECTION OF UNREELING

Figure 28. SOT-23 Tape and Reel Outline Dimension

(RT-3)

Dimensions shown in millimeters

Rev. I | Page 15 of 16

AD1582/AD1583/AD1584/AD1585

ORDERING GUIDE

Output

Voltage

(V)

Initial

Accuracy

(%)

Initial Temp.

Coefficient

(ppm/°C)

No. of Parts

Banding

Accuracy

(mV)

Package

Description

Package

Option

Model¹

Branding²per Reel

AD1582ART-REEL7

AD1582ARTZ-R2

AD1582ARTZ-REEL7

AD1582BRT-REEL7

AD1582BRTZ-REEL7

AD1583ART-REEL7

AD1583ARTZ-R2

AD1583ARTZ-REEL7

AD1583BRT-REEL7

AD1583BRTZ-REEL7

AD1584ARTZ-R2

AD1584ARTZ-REEL7

AD1584BRTZ-REEL7

AD1585ARTZ-R2

AD1585ARTZ-REEL7

AD1585BRTZ-REEL7

2.50

3.00

4.096

5.00

20

2

0.80

0.08

1.00

0.10

0.98

0.10

1.00

0.10

100

50

SOT-23-3

RT-3

2A

3,000

250

R1Z

2B

R20

3A

R22

3B

R23

R25

R26

R28

R29

3,000

250

3,000

250

3,000

250

3,000

2

50

30

3

100

50

3

50

40

4

100

50

5

100

50

¹Z = RoHS Compliant Part.

²See Package Branding Information section.

PACKAGE BRANDING INFORMATION

This branding information is only for nonPb-free versions. Four fields identify the device:

First field, product identifier; for example, a 2/3/4/5 identifies the generic as AD1582/AD1583/AD1584/AD1585

Second field, device grade, which can be A, B, or C

Third field, calendar year of processing: 7 for 1997..., A for 2001...

Fourth field, two-week window within the calendar year; for example, letters A to Z to represent a two-week window starting with “A” for

the first two weeks of January.

registered trademarks are the property of their respective owners.

D00701-0-5/10(I)

Rev. I | Page 16 of 16


型号：	AD1584CRTZ-REEL7
厂家：	Rochester Electronics
描述：	1-OUTPUT THREE TERM VOLTAGE REFERENCE, 4.096 V, PDSO3, LEAD FREE, TO-236AB, SOT-23, 3 PIN 光电二极管输出元件
文件：	总17页 (文件大小：1360K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

AD1584CRTZ-REEL7 [ROCHESTER]

相关型号：

AD1584_15

AD1585

AD1585A

AD1585ART

AD1585ART-R2

AD1585ART-R2

AD1585ART-REEL

AD1585ART-REEL7

AD1585ART-REEL7

AD1585ARTRL

AD1585ARTRL7

AD1585ARTZ-R2