OP490ATC/883 [ADI]
Low Voltage Micropower Quad Operational Amplifier; 低电压，微功耗四路运算放大器
| 型号： | OP490ATC/883 |
| 厂家： | 
ADI |
| 描述： | Low Voltage Micropower Quad Operational Amplifier |
| 文件： | 总12页 (文件大小：244K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Low Voltage Micropower
Quad Operational Amplifier
a
OP490
P IN CO NNECTIO N
FEATURES
Single/ Dual Supply Operation
+1.6 V to +36 V
؎0.8 V to ؎18 V
14-P in H erm etic D IP (Y-Suffix)
14-P in P lastic D IP (P -Suffix)
True Single-Supply Operation; Input and Output
Voltage Ranges Include Ground
Low Supply Current: 80 A m ax
High Output Drive: 5 m A m in
Low Offset Voltage: 0.5 m A m ax
High Open-Loop Gain: 700 V/ m V m in
Outstanding PSRR: 5.6 V/ V m in
Industry Standard Quad Pinouts
Available in Die Form
OUT D
OUT A
–IN A
+IN A
V+
14
1
2
3
4
5
6
7
13 –IN D
12
+IN D
11 V–
+IN B
–IN B
OUT B
10
9
+IN C
–IN C
OUT C
8
GENERAL D ESCRIP TIO N
16-P in SO L (S-Suffix)
T he OP490 is a high-performance micropower quad op amp
that operates from a single supply of +1.6 V to +36 V or from
dual supplies of ±0.8 V to ±18 V. Input voltage range includes
the negative rail allowing the OP490 to accommodate input sig-
nals down to ground in single-supply operation. T he OP490’s
output swing also includes ground when operating from a single
supply, enabling “zero-in, zero-out” operation.
OUT D
OUT A
16
1
2
3
4
5
6
7
8
–IN A
15 –IN D
14
+IN A
V+
+IN D
13 V–
+IN B
–IN B
OUT B
12 +IN C
11 –IN C
T he quad OP490 draws less than 20 µA of quiescent supply
current per amplifier, but each amplifier is able to deliver over
5 mA of output current to a load. Input offset voltage is under
0.5 mV with offset drift below 5 µV/°C over the military tem-
perature range. Gain exceeds over 700,000 and CMR is better
than 100 dB. A PSRR of under 5.6 µV/V minimizes offset volt-
age changes experienced in battery powered systems.
OUT C
NC
10
9
NC
NC = NO CONNECT
28-P in LCC (TC-Suffix)
T he quad OP490 combines high performance with the space
and cost savings of quad amplifiers. T he minimal voltage and
current requirements of the OP490 makes it ideal for battery
and solar powered applications, such as portable instruments
and remote sensors.
4
3
2
1
28 27 26
NC
NC
5
25
24
23
22
21
20
+IN D
NC
6
7
+IN A
NC
V–
8
9
V+
NC
NC
+IN C
NC
+IN B 10
11
19
NC
17 18
12 13 14
16
15
NC = NO CONNECT
REV. B
Inform ation furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assum ed by Analog Devices for its
use, nor for any infringem ents of patents or other rights of third parties
which m ay result from its use. No license is granted by im plication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.
Tel: 617/ 329-4700 Fax: 617/ 326-8703
OP490–SPECIFICATIONS
(@ V = ؎1.5 V to ؎15 V, T = +25؇C, unless otherwise noted)
ELECTRICAL CHARACTERISTICS
S
A
O P 490A/E
Typ
O P 490F
Typ Max Min
O P 490G
Typ Max Units
P aram eter
Sym bol
Conditions
Min
Max
Min
INPUT OFFSET VOLT AGE
INPUT OFFSET CURRENT
INPUT BIAS CURRENT
VOS
IOS
IB
0.2
0.4
4.2
0.5
3
0.4
0.4
4.2
0.75
5
0.6 1.0 mV
VCM = 0 V
VCM = 0 V
0.4
5
nA
nA
15
20
4.2 25
LARGE SIGNAL VOLT AGE
GAIN
AVO
VS = ±15 V, VO = ±10 V
RL = 100 kΩ
RL = 10 kΩ
700
350
125
1200
600
250
500
250
100
1000
500
200
400
200
100
800
400
200
V/mV
RL = 2 kΩ
V+ = 5 V, V– = 0 V,
1 V < VO < 4 V
RL = 100 kΩ
200
100
400
180
125
75
300
140
100
70
250
140
RL = 10 kΩ
INPUT VOLT AGE RANGE
OUT PUT VOLT AGE SWING
IVR
VO
V+ = 5 V, V– = 0 V
0/4
–15/13.5
0/4
–15/13.5
0/4
–15/13.5
V
VS = ±15 V1
VS = ±15 V
RL = 10 kΩ
RL = 2 kΩ
V+ = 5 V, V– = 0 V
RL = 2 kΩ
±13.5 ±14.2
±10.5 ±11.5
±13.5 ±14.2
±10.5 ±11.5
±13.5 ±14.2
±10.5 ±11.5
V
V
VOH
VOL
4.0
4.2
4.0
4.2
4.0
4.2
V+ = 5 V, V– = 0 V
RL = 10 kΩ
100
110
500
100
100
500
100 500 µV
COMMON-MODE
REJECT ION
CMR
V+ = 5 V, V– = 0 V,
0 V < VCM < 4 V
VS = ±15 V,
90
80
90
80
90
100
dB
100
130
120
120
–15 V < VCM < 13.5 V
POWER SUPPLY
REJECT ION RAT IO
PSRR
SR
1.0
12
5.6
3.2
12
10
3.2 10
12
µV/V
V/ms
µA
SLEW RAT E
VS = ±15 V
5
5
5
SUPPLY CURRENT
(ALL AMPLIFIERS)
VS = ±1.5 V, No Load
VS = ±15 V, No Load
40
60
60
80
40
60
60
80
40
60
60
80
ISY
CAPACIT IVE LOAD ST ABILIT Y
INPUT NOISE VOLT AGE
AV = +1
650
3
650
3
650
3
pF
e
p-p
fO = 0.1 Hz to 10 Hz
µV p-p
n
VS = ±15 V
INPUT RESIST ANCE
DIFFERENT IAL MODE
RIN
VS = ±15 V
30
30
30
MΩ
INPUT RESIST ANCE
COMMON MODE
RINCM
GBWP
CS
VS = ±15 V
20
20
20
GΩ
kHz
dB
GAIN BANDWIDT H PRODUCT
CHANNEL SEPARAT ION
AV = +1
20
20
20
fO = 10 Hz
120
150
120
150
120
150
VO = 20 V p-p
VS = ±15 V2
NOT ES
1Guaranteed by CMR test.
2Guaranteed but not 100% tested.
Specifications subject to change without notice.
–2–
REV. B
OP490
ELECTRICAL CHARACTERISTICS (@ V = ؎1.5 V to ؎15 V, –55؇C ≤ T ≤ +125؇C, unless otherwise noted)
S
A
O P 490A
Typ
P aram eter
Sym bol
Conditions
Min
Max
Units
INPUT OFFSET VOLT AGE
VOS
0.4
1.0
mV
AVERAGE INPUT OFFSET
VOLT AGE DRIFT
T CVOS
IOS
VS = ±15 V
VCM = 0 V
VCM = 0 V
2
5
µV/°C
nA
INPUT OFFSET CURRENT
INPUT BIAS CURRENT
1.5
4.4
5
IB
20
nA
LARGE-SIGNAL VOLT AGE GAIN
AVO
VS = ±15 V, VO = ±10 V
RL = 100 kΩ
225
125
50
400
240
110
V/mV
RL = 10 kΩ
RL = 2 kΩ
V+ = 5 V, V– = 0 V,
1 V < VO < 4 V
RL = 100 kΩ
100
50
200
110
RL = 10 kΩ
INPUT VOLT AGE RANGE
OUT PUT VOLT AGE SWING
IVR
VO
V+ = 5 V, V– = 0 V
0/3.5
–15/13.5
V
VS = ±15 V1
VS = ±15 V
RL = 10 kΩ
RL = 2 kΩ
V+ = 5 V, V– = 0 V
RL = 2 kΩ
±13
±10
±13.7
±11
V
V
VOH
VOL
3.9
4.1
V+ = 5 V, V– = 0 V
RL = 10 kΩ
100
500
10
µV
COMMON-MODE REJECT ION
CMR
V+ = 5 V, V– = 0 V, 0 V < VCM < 3.5 V 85
105
115
dB
VS = ±15 V, –15 V < VCM < 13.5 V
95
POWER SUPPLY REJECT ION RAT IO
SUPPLY CURRENT (ALL AMPLIFIERS)
PSRR
ISY
3.2
µV/V
µA
VS = ±1.5 V, No Load
VS = ±15 V, No Load
70
90
100
120
NOT ES
1Guaranteed by CMR test.
Specifications subject to change without notice.
REV. B
–3–
OP490–SPECIFICATIONS
(@ V = ؎1.5 V to ؎15 V, –25؇C ≤ T ≤ +85؇C for OP490E/F, –40؇C ≤ T ≤ +85؇C for
OP490G, unless otherwise noted)
S
A
A
ELECTRICAL CHARACTERISTICS
O P 490E
O P 490F
Typ Max Min
O P 490G
P aram eter
Sym bol
Conditions
Min
Typ
Max
Min
Typ Max Units
INPUT OFFSET VOLT AGE
VOS
0.32
0.8
0.6
4
1.35
0.8 1.5
mV
AVERAGE INPUT OFFSET
VOLT AGE DRIVE
T CVOS
VS = ±15 V
2
5
4
µV/°C
INPUT OFFSET CURRENT
INPUT BIAS CURRENT
IOS
IB
VCM = 0 V
VCM = 0 V
0.8
4.4
3
1.0
4.4
5
1.3
7
nA
nA
15
20
4.4 25
LARGE SIGNAL VOLT AGE GAIN AVO
VS = ±15 V, VO = ±10 V
RL = 100 kΩ
500
250
100
800
400
200
350
175
75
700
250
150
300
150
75
600
250
125
V/mV
RL = 10 kΩ
RL = 2 kΩ
V+ = 5 V, V– = 0 V,
1 V < VO < 4 V
RL = 100 kΩ
150
75
280
140
100
50
220
110
80
40
160
90
RL = 10 kΩ
INPUT VOLT AGE RANGE
OUT PUT VOLT AGE SWING
IVR
VO
V+ = 5 V, V– = 0 V
0/3.5
–15/13.5
0/3.5
–15/13.5
0/3.5
–15/13.5
V
V
VS = ±15 V1
VS = ±15 V
RL = 10 kΩ
RL = 2 kΩ
±13
±10
±14
±11
±13
±10
±14
±11
±13
±10
±14
±11
VOH
VOL
V+ = 5 V, V– = 0 V
RL = 2 kΩ
V+ = 5 V, V– = 0 V
RL = 10 kΩ
3.9
4.1
3.9
4.1
3.9
4.1
100
110
500
100
100
500
100 500
100
µV
COMMON-MODE
REJECT ION
CMR
V+ = 5 V, V– = 0 V,
0 V < VCM < 3.5 V
VS = ±15 V,
90
80
90
80
90
dB
100
120
110
110
–15 V < VCM < 13.5 V
POWER SUPPLY
REJECT ION RAT IO
PSRR
ISY
1.0
5.6
3.2
10
5.6 17.8 µV/V
SUPPLY CURRENT
(ALL AMPLIFIERS)
VS = ±1.5 V, No Load
VS = ±15 V, No Load
65
80
100
120
65
80
100
120
60
75
100
120
µA
NOT ES
1Guaranteed by CMR test.
Specifications subject to change without notice.
SIMP LIFIED SCH EMATIC
–4–
REV. B
OP490
(@ V = ؎1.5 V to ؎15 V, T = +25؇C, unless otherwise noted)
Wafer Test Limits
P aram eter
S
A
Sym bol
Conditions
Lim its
Units
Input Offset Voltage
Input Offset Current
Input Bias Current
VOS
IOS
IB
0.75
5
20
mV max
nA max
nA max
VCM = 0 V
VCM = 0 V
Large Signal Voltage Gain
AVO
VS = ±15 V, VO = ±10 V
RL = 100 kΩ
500
250
125
V/mV min
V/mV min
V min
RL = 10 kΩ
V+ = 5 V, V– = 0 V
1 V < VO < 4 V, RL = 100 kΩ
V+ = 5 V, V– = 0 V
VS = ±15 V1
Input Voltage Range
Output Voltage Swing
IVR
0/4
–15/13.5
VS = ±15 V
VO
RL = 10 kΩ
RL = 2 kΩ
V+ = 5 V, V– = 0 V
RL = 2 kΩ
V+ = 5 V, V– = 0 V
RL = 10 kΩ
±13.5
±10.5
V min
V min
VOH
VOL
CMR
4.0
500
80
90
µV max
dB min
Common-Mode Rejection
V+ = 5 V, V– = 0 V, 0 V < VCM < 4 V
VS = ±15 V, –15 V < VCM < 13.5 V
Power Supply Rejection Ratio
Supply Current (All Amplifiers)
PSRR
ISY
10
80
µV/V max
µA max
VS = ±15 V, No Load
NOT ES
1Guaranteed by CMR test.
Electrical tests are performed at wafer probe to the limits shown. Due to variations in assembly methods and normal yield loss, yield after packaging is not guaranteed
for standard product dice. Consult factory to negotiate specifications based on dice lot qualifications through sample lot assembly and testing.
ABSO LUTE MAXIMUM RATINGS1
O RD ERING GUID E 1
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18 V
Differential Input Voltage . . . . [(V–) – 20 V] to [(V+) + 20 V]
Common-Mode Input Voltage . [(V–) – 20 V] to [(V+) + 20 V]
Output Short-Circuit Duration . . . . . . . . . . . . . . . Continuous
Storage T emperature Range
T C, Y, P Package . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Operating T emperature Range
OP490A . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to +125°C
OP490E, OP490F . . . . . . . . . . . . . . . . . . . –25°C to +85°C
OP490G . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to +85°C
Junction T emperature (TJ) . . . . . . . . . . . . . –65°C to +150°C
TA = +25؇C
VO S m ax
(m V)
O perating
Tem perature P ackage
Range
Model
D escription
OP490AY2
0.5
MIL
MIL
IND
IND
XIND
XIND
14-Pin Cerdip
28-Contact LCC
14-Pin Cerdip
14-Pin Cerdip
14-Pin Plastic DIP
16-Pin SOL
OP490AT C/883 0.5
OP490EY
OP490FY
OP490GP
OP490GS3
0.5
0.75
1.0
1.0
NOT ES
1Burn-in is available on commercial and industrial temperature range parts in
cerdip, plastic DIP and T O-can packages.
Lead T emperature Range (Soldering, 60 sec) . . . . . . +300°C
2
P ackage Type
JA
JC
Units
2For devices processed in total compliance to MIL-ST D-883, add /883 after
part number. Consult factory for 883 data sheet.
14-Pin Hermetic DIP (Y)
14-Pin Plastic DIP (P)
28-Contact LCC (T C)
16-Pin SOL (S)
99
76
78
92
12
33
30
27
°C/W
°C/W
°C/W
°C/W
3For availability and burn-in information on SO and PLCC packages, contact
your local sales office.
D ICE CH ARACTERISTICS
NOT ES
1Absolute maximum ratings apply to both DICE and packaged parts, unless
otherwise noted.
2θJA is specified for worst case mounting conditions, i.e., θJA is specified for device
in socket for Cerdip, P-DIP, and LCC packages; θJA is specified for device soldered
to printed circuit board for SOL package.
Die Size 0.139 × 0.121 inch, 16,819 sq. m ils
(3.53 × 3.07 m m , 10.84 sq. m m )
REV. B
–5–
OP490–Typical Performance Characteristics
Input Offset Voltage
vs. Tem perature
Input Bias Current
vs. Tem perature
Input Offset Current
vs. Tem perature
Total Supply Current
vs. Tem perature
Open-Loop Gain and
Phase Shift vs. Frequency
Open-Loop Gain vs.
Single-Supply Voltage
Closed-Loop Gain
vs. Frequency
Output Voltage Swing
vs. Load Resistance
Output Voltage Swing
vs. Load Resistance
–6–
REV. B
OP490
Noise Voltage Density
vs. Frequency
Com m on-Mode Rejection
vs. Frequency
Power Supply Rejection
vs. Frequency
100
90
100
90
10
10
0%
0%
100µs
20mV
1ms
5V
T
= 25°C
T
= 25°C
A
A
V
= ±15V
= +1
V
= ±15V
= +1
S
S
A
A
V
L
V
L
R
C
= 10kΩ
= 500pF
R
C
= 10kΩ
= 500pF
L
L
Current Noise Density
vs. Frequency
Large-Signal
Transient Response
Sm all-Signal
Transient Response
Burn-In Circuit
REV. B
–7–
OP490
Figure 1. Lithium -Sulphur Dioxide Cell Discharge Charac-
teristic with OP490 and 100 kΩ Loads
requirement of the OP490, combined with the flat discharge
characteristic of the lithium cell, indicates that the OP490 can
be operated over the entire useful life of the cell. Figure 1 shows
the typical discharge characteristic of a 1 Ah lithium cell power-
ing an OP490 with each amplifier, in turn, driving full output
swing into a 100 kΩ load.
SINGLE-SUP P LY O UTP UT VO LTAGE RANGE
In single-supply operation the OP490’s input and output ranges
include ground. T his allows true “zero-in, zero-out” operation.
T he output stage provides an active pull-down to around 0.8 V
above ground. Below this level, a load resistance of up to 1 MΩ
to ground is required to pull the output down to zero.
Channel Separation Test Circuit
AP P LICATIO NS INFO RMATIO N
BATTERY-P O WERED AP P LICATIO NS
In the region from ground to 0.8 V the OP490 has voltage gain
equal to the data sheet specification. Output current source ca-
pability is maintained over the entire voltage range including
ground.
T he OP490 can be operated on a minimum supply voltage of
+1.6 V, or with dual supplies of ±0.8 V, and draws only 60 µA
of supply current. In many battery-powered circuits, the OP490
can be continuously operated for hundreds of hours before re-
quiring battery replacement, reducing equipment downtime and
operating costs.
INP UT VO LTAGE P RO TECTIO N
T he OP490 uses a PNP input stage with protection resistors in
series with the inverting and noninverting inputs. T he high
breakdown of the PNP transistors coupled with the protection
resistors provides a large amount of input protection, allowing
the inputs to be taken 20 V beyond either supply without dam-
aging the amplifier.
High performance portable equipment and instruments fre-
quently use lithium cells because of their long shelf-life, light
weight, and high energy density relative to older primary cells.
Most lithium cells have a nominal output voltage of 3 V and are
noted for a flat discharge characteristic. T he low supply current
–8–
REV. B
OP490
R6, and R7, and associated CMOS switches. T he resulting out-
put of A is a triangle wave with upper and lower levels of 3.33
and 1.67 volts. T he output of B is a square wave with almost
rail-to-rail swing. With the components shown, frequency of op-
eration is given by the equation:
MICRO P O WER VO LTAGE-CO NTRO LLED O SCILLATO R
An OP490 in combination with an inexpensive quad CMOS
switch comprise the precision VCO of Figure 2. T his circuit pro-
vides triangle and square wave outputs and draws only 75 µA
from a 5 V supply. A acts as an integrator; S1 switches the
charging current symmetrically to yield positive and negative
ramps. T he integrator is bounded by B which acts as a Schmitt
trigger with a precise hysteresis of 1.67 volts, set by resistors R5,
fOUT =VCONTROL (Volts) ×10 Hz/V
but this is easily changed by varying C1. T he circuit operates
well up to a few hundred hertz.
Figure 2. Micropower Voltage Controlled Oscillator
REV. B
–9–
OP490
MICRO P O WER SINGLE-SUP P LY
Q UAD VO LTAGE-O UTP UT 8-BIT D AC
T he circuit of Figure 3 uses the DAC8408 CMOS quad 8-bit
DAC, and the OP490 to form a single-supply quad voltage-out-
put DAC with a supply drain of only 140 µA. T he DAC8408 is
used in voltage switching mode and each DAC has an output re-
sistance (≈10 kΩ) independent of the digital input code. T he
output amplifiers act as buffers to avoid loading the DACs. T he
100 kΩ resistors ensure that the OP490 outputs will swing be-
low 0.8 V when required.
Figure 3. Micropower Single-Supply Quad Voltage Output 8-Bit DAC
–10–
REV. B
OP490
Figure 4. High Output Am plifier
H IGH O UTP UT AMP LIFIER
present at the DAC, which is easily set by a microprocessor, de-
termines the ratio between the fixed DAC feedback resistor and
the resistance of the DAC ladder presents to the op amp feed-
back loop. Gain of each amplifier is:
T he amplifier shown in Figure 4 is capable of driving 25 V p-p
into a 1 kΩ load. Design of the amplifier is based on a bridge
configuration. A amplifies the input signal and drives the load
with the help of B. Amplifier C is a unity-gain inverter which
drives the load with help from D. Gain of the high output am-
plifier with the component values shown is 10, but can easily be
changed by varying R1 or R2.
VOUT
VIN
256
n
= –
where n equals the decimal equivalent of the 8-bit digital code
present at the DAC. If the digital code present at the DAC con-
sists of all zeros, the feedback loop will be open causing the op
amp output to saturate. T he 10 MΩ resistors placed in parallel
with the DAC feedback loop eliminates this problem with a very
small reduction in gain accuracy. T he 2.5 V reference biases the
amplifiers to the center of the linear region providing maximum
output swing.
SINGLE-SUP P LY MICRO P O WER Q UAD
P RO GRAMMABLE GAIN AMP LIFIER
T he combination of quad OP490 and the DAC8408 quad 8-bit
CMOS DAC, creates a quad programmable-gain amplifier with
a quiescent supply drain of only 140 µA. T he digital code
REV. B
–11–
OP490
Figure 5. Single Supply Micropower Quad Program m able Gain Am plifier
–12–
REV. B
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