FAN4174IP5X_技术文档

May 2008

FAN4174 / FAN4274

Single and Dual, Ultra-Low Cost, Rail-to-Rail I/O,

CMOS Amplifier

Features

Description

The FAN4174 (single) and FAN4274 (dual) are ultra-low

cost voltage feedback amplifiers with CMOS inputs that

consume only 200µA of supply current per amplifier,

while providing ±33mA of output short-circuit current.

These amplifiers are designed to operate from 2.5V to

5V supplies. The common mode voltage range extends

beyond the negative and positive rails.

200µA Supply Current per Amplifier

3.7MHz Bandwidth

Output Swing to Within 10mV of Either Rail

Input Voltage Range Exceeds the Rails

3V/µs Slew Rate

The FAN4174 and FAN4274 are designed on a CMOS

process and provide 3.7MHz of bandwidth and 3V/μs of

slew rate at a supply voltage of 5V. The combination of

low power, rail-to-rail performance, low-voltage

operation, and tiny package options make this amplifier

family well suited for use in many general-purpose and

battery-powered applications.

25nV/√Hz Input Voltage Noise

Replaces KM4170 and KM4270

FAN4174 Competes with OPA340 and TLV2461;

Available in SC70-5 and SOT23-5 Packages

FAN4274 Competes with OPA2340 and TLV2462;

Available in MSOP-8 Package

Fully Specified at +2.7V and +5V Supplies

Applications

Portable / Battery-powered Applications

PCMCIA, USB

Mobile Communications, Cellular Phones, Pagers

Notebooks and PDAs

Sensor Interface

A/D Buffer

Active Filters

Signal Conditioning

Portable Test Instruments

Figure 1. Frequency vs. Gain

Ordering Information

Operating

Temperature Range

Packing

Method

Part Number

Package

Eco Status

Tape and Reel

(3000)

FAN4174IP5X

FAN4174IS5X

FAN4274IMU8X

-40 to +85°C

5-Lead SC70 Package

RoHS

Tape and Reel

(3000)

-40 to +85°C

5-Lead SOT23 Package

RoHS

Tape and Reel

(3000)

8-Lead Molded Small Outline Package

For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.

FAN4174/FAN4274 • Rev. 1.0.4

www.fairchildsemi.com

Typical Application

Figure 2. Pin Configuration

FAN4174/FAN4274 • Rev. 1.0.4

www.fairchildsemi.com

2

Pin Configurations

Figure 3. FAN4174 SOT23

Figure 4. FAN4147 SC70

Figure 5. FAN4274 MSOP

FAN4174 Pin Assignments

Pin #

Name

OUT

-V_S

Description

Output

1

2

3

4

5

Negative Supply

Positive Supply

Negative Input

Positive Supply

+IN

-IN

+V_S

FAN4274 Pin Assignments

Pin #

Name

OUT1

-IN1

Description

1

2

3

4

5

6

7

8

Output, Channel 1

Negative Input, Channel 1

Positive Input, Channel 1

Negative Supply

+IN1

-V_S

+IN2

-IN2

Positive Input, Channel 2

Negative Input, Channel 2

Output, Channel 2

OUT2

+V_S

Positive Supply

FAN4174/FAN4274 • Rev. 1.0.4

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3

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be

operable above the recommended operating conditions and stressing the parts to these levels is not recommended.

In addition, extended exposure to stresses above the recommended operating conditions may affect device

reliability. The absolute maximum ratings are stress ratings only. Functional operation under any of these conditions

is NOT implied. Performance and reliability are guaranteed only if operating conditions are not exceeded.

Symbol

V_CC

Parameter

Supply Voltage

Min.

0

Max.

6

Unit

V

V_IN

Input Voltage Range

-V_S-0.5

+V_S+0.5

+150

+300

256

V

T_J

Junction Temperature

Storage Temperature

Lead Soldering, 10 Seconds

°C

T_STG

T_L

-65

5-Lead SOT23

Thermal Resistance⁽¹⁾

°C/W

Θ_JA

5-Lead SC70

8-Lead MSOP

331

206

Note:

1. Package thermal resistance JEDEC standard, multi-layer test boards, still air.

Recommended Operating Conditions

The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended

operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not

recommend exceeding them or designing to Absolute Maximum Ratings.

Symbol

Parameter

Min.

Typ.

Max.

Unit

T_A

Operating Temperature Range

-40

+85

°C

FAN4174/FAN4274 • Rev. 1.0.4

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4

Electrical Specifications at +2.7V

V_S=+2.7V, G=2, R_L=10kΩ to V_S/2, R_F=5kΩ; unless otherwise noted.

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Units

Frequency Domain Response

UGBW

G=+1

4

2.5

4

MHz

-3dB Bandwidth

BW_SS

GBWP

Gain Bandwidth Product

Time Domain Response

t_R, f_F

OS

Rise and Fall Time

V_O=1.0V Step

300

5

ns

%

Overshoot

Slew Rate

V_O=1.0V Step

SR

V_O=3V Step, G=-1

3

V/µs

Distortion and Noise Response

HD2

2nd Harmonic Distortion

V_O=1V_PP, 10kHz

-66

-67

0.1

dBc

HD3

3rd Harmonic Distortion

Total Harmonic Distortion

Input Voltage Noise

THD

%

e_n

26

nV/√Hz

dB

X_TALK

Crosstalk (FAN4274)

100kHZ

-100

DC Performance

V_IO

dV_IO

I_bn

Input Offset Voltage⁽²⁾

-6

0

2.1

5

+6

mV

µV/°C

pA

Average Drift

Input Bias Current

PSRR

A_OL

I_S

Power Supply Rejection Ratio⁽²⁾

DC

50

73

98

200

dB

Open-loop Gain

Supply Current per Amplifier⁽²⁾

dB

300

µA

Input Characteristics

R_IN

C_IN

Input Resistance

10

GΩ

Input Capacitance

1.4

pF

-0.3 to

2.6

FAN4174 (Typical)

FAN4274 (Typical)

Input Common Mode Voltage

Range

CMIR

V

-0.3 to

3.0

FAN4174

FAN4274

DC, V_CM=OV to 2.2V

50

65

Common Mode

CMRR

dB

Rejection Ratio⁽²⁾

Output Characteristics

0.01 to

2.69

0.03

2.65

R_L=10kΩ to V_S/2

R_L=1kΩ to V_S/2

V_O

Output Voltage Swing⁽²⁾

V

0.05 to

2.55

I_SC

V_S

Short Circuit Output Current

Power Supply Operating Range

+34/-12

mA

V

2.5 to

5.5

Note:

2. 100% tested at 25°C.

FAN4174/FAN4274 • Rev. 1.0.4

www.fairchildsemi.com

5

Electrical Specifications at +5V

V_S=+5V, G=2, R_L=10kΩ to V_S/2, R_F= 5kΩ; unless otherwise noted.

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Units

Frequency Domain Response

UGBW

G=+1

3.7

2.3

3.7

MHz

-3dB Bandwidth

BW_SS

GBWP

Gain Bandwidth Product

Time Domain Response

t_R, f_F

OS

Rise and Fall Time

V_O=1.0V Step

300

5

ns

%

Overshoot

Slew Rate

V_O=1.0V Step

SR

V_O=3V Step, G=-1

3

V/µs

Distortion and Noise Response

HD2

2nd Harmonic Distortion

V_O=1V_PP, 10kHz

-80

dBc

HD3

3rd Harmonic Distortion

Total Harmonic Distortion

Input Voltage Noise

THD

0.02

25

%

e_n

nV/√Hz

dB

X_TALK

Crosstalk (FAN4274)

100kHZ

-100

DC Performance

V_IO

dV_IO

I_bn

Input Offset Voltage⁽³⁾

-8

0

+8

mV

µV/°C

pA

Average Drift

2.9

5

Input Bias Current

PSRR

A_OL

I_S

Power Supply Rejection Ratio⁽³⁾

DC

50

73

dB

Open-loop Gain

Supply Current per Amplifier⁽³⁾

102

200

dB

300

µA

Input Characteristics

R_IN

C_IN

Input Resistance

10

GΩ

Input Capacitance

1.2

pF

Input Common Mode Voltage

Range

-0.3 to

5.3

CMIR

Typical

V

CMRR

Common Mode Rejection Ratio⁽³⁾DC, V_CM=0V to V_S

58

73

dB

Output Characteristics

0.01 to

4.99

0.03

4.95

R_L=10kΩ to V_S/2

R_L=1kΩ to V_S/2

V_O

Output Voltage Swing⁽³⁾

V

0.1 to

4.9

I_SC

V_S

Short Circuit Output Current

±33

mA

V

2.5 to

5.5

Power Supply Operating Range

Note:

3. 100% tested at 25°C.

FAN4174/FAN4274 • Rev. 1.0.4

www.fairchildsemi.com

6

Typical Performance Characteristics

V_S=+2.7, G=2, R_L=10kΩ to V_S/2, R_F=5kΩ; unless otherwise noted.

Figure 6. Non-Inverting Frequency Response (+5)

Figure 8. Non-Inverting Frequency Response

Figure 10. Frequency Response vs. C_L

Figure 7. Inverting Frequency Response (+5V)

Figure 9. Inverting Frequency Response

Figure 11. Frequency Response vs. R_L

Figure 12. Large Signal Frequency Response (+5V)

Figure 13. Open-loop Gain and Phase vs. Frequency

FAN4174/FAN4274 • Rev. 1.0.4

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7

Typical Performance Characteristic

V_S=+2.7, G=2, R_L=10kΩ to V_S/2, R_F=5kΩ; unless otherwise noted.

Figure 14. 2nd and 3rd Harmonic Distortion

Figure 16. 3rd Harmonic Distortion vs. V_O

Figure 18. PSRR V_S=5V

Figure 15. 2nd Harmonic Distortion vs. V_O

Figure 17. CMRR V_S=5V

Figure 19. Output Swing vs. Load

Figure 20. Pulse Response vs. Common Mode

Voltage

Figure 21. Input Voltage Noise

www.fairchildsemi.com

FAN4174/FAN4274 • Rev. 1.0.4

8

Application Information

General Description

Overdrive Recovery

The FAN4174 amplifier includes single-supply, general-

purpose, voltage-feedback amplifiers, fabricated on a

bi-CMOS process. The family features a rail-to-rail input

and output and is unity gain stable. The typical non-

inverting circuit schematic is shown in Figure 22.

Overdrive of an amplifier occurs when the output and/or

input ranges are exceeded. The recovery time varies

based on whether the input or output is overdriven and

by how much the range is exceeded. The FAN4174

typically recovers in less than 500ns from an overdrive

condition. Figure 24 shows the FAN4174 amplifier in an

overdriven condition.

Figure 24. Overdrive Recovery

Figure 22. Typical Non-inverting Configuration

Driving Capacitive Loads

Input Common Mode Voltage

Figure 10 illustrates the response of the FAN4174

amplifier family. A small series resistance (R_S) at the

output of the amplifier, illustrated in Figure 25, improves

stability and settling performance. R_Svalues in Figure

10 were chosen to achieve maximum bandwidth with

less than 2dB of peaking. For maximum flatness, use a

larger R_S. Capacitive loads larger than 500pF require

the use of R_S.

The common mode input range extends to 300mV

below ground and to 100mV above V_Sin single supply

operation. Exceeding these values does not cause

phase reversal; however, if the input voltage exceeds

the rails by more than 0.5V, the input ESD devices

begin to conduct. The output stays at the rail during this

overdrive condition. If the absolute maximum input V_IN

(700mV beyond either rail) is exceeded, externally limit

the input current to ±5mA, as shown in Figure 23.

Figure 23. Circuit for Input Current Protection

Figure 25. Typical Topology for Driving a

Capacitive Load

Power Dissipation

Driving a capacitive load introduces phase-lag into the

output signal, which reduces phase margin in the

amplifier. The unity gain follower is the most sensitive

configuration. In a unity gain follower configuration, the

The maximum internal power dissipation allowed is

directly related to the maximum junction temperature. If

the maximum junction temperature exceeds 150°C,

performance degradation occurs. If the maximum

junction temperature exceeds 150°C for an extended

time, device failure may occur.

FAN4174 amplifier family requires

resistor to drive a 100pF load.

a

300Ω series

FAN4174/FAN4274 • Rev. 1.0.4

www.fairchildsemi.com

9

Layout Considerations

General layout and supply bypassing play major roles

in high-frequency performance. Fairchild evaluation

boards help guide high-frequency layout and aid in

device testing and characterization. Follow the steps

below as a basis for high-frequency layout:

1.

2.

Include 6.8μF and 0.01μF ceramic capacitors.

Place the 6.8μF capacitor within 0.75 inches

of the power pin.

3.

4.

Place the 0.01μF capacitor within 0.1 inches

of the power pin.

Remove the ground plane under and around

the part, especially near the input and output

pins, to reduce parasitic capacitance.

Minimize all trace lengths to reduce series

inductances.

Refer to the evaluation board layouts shown in

Figures 28-31 for more information.

When evaluating only one channel, complete the

following on the unused channel:

1.

2.

Ground the non-inverting input.

Figure 26. FAN4174 Evaluation Board Schematic

(KEV002/KEB011)

Short the output to the inverting input.

Evaluation Board Information

The following evaluation boards are available to aid in

the testing and layout of this device:

Evaluation

Description

Products

Board

Single Channel,

Dual Supply, 5

KEB002

FAN4174IS5X

and 6-Lead SOT23

Dual Channel,

Dual Supply

8-Lead MSOP

KEB010

KEB011

FAN4274IMU8X

FAN4174IP5X

Single Channel,

Dual Supply, 5

and 6-Lead SC70

Evaluation board schematics are shown in Figure 26

and Figure 27; layouts are shown in Figures 28-31.

Figure 27. FAN4274 Evaluation Board Schematic

(KEB010)

FAN4174/FAN4274 • Rev. 1.0.4

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10

Board Layout Information

Figure 28. KEB002 (Top Side)

Figure 29. KEB002 (Bottom Side)

Figure 30. KEB010 (Top Side)

Figure 31. KEB010 (Bottom Side)

FAN4174/FAN4274 • Rev. 1.0.4

www.fairchildsemi.com

11

Physical Dimensions

SYMM

C

L

3.00

2.80

0.95

A

5

4

B

3.00

2.60

1.70

1.50

2.60

1

2

3

(0.30)

1.00

0.50

0.30

0.95

0.20

C A B

1.90

0.70

TOP VIEW

LAND PATTERN RECOMMENDATION

SEE DETAIL A

1.30

0.90

1.45 MAX

C

0.15

0.05

0.22

0.08

0.10 C

NOTES: UNLESS OTHEWISE SPECIFIED

A) THIS PACKAGE CONFORMS TO JEDEC

MO-178, ISSUE B, VARIATION AA,

B) ALL DIMENSIONS ARE IN MILLIMETERS.

GAGE PLANE

0.25

C) MA05Brev5

8°

0°

0.55

0.35

SEATING PLANE

0.60 REF

Figure 32. 5-Lead SOT-23 Package

Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner

without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify

or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically

the warranty therein, which covers Fairchild products.

Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/

FAN4174/FAN4274 • Rev. 1.0.4

www.fairchildsemi.com

12

Physical Dimensions

Figure 33. 5-Lead SC70 Package

Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner

without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify

or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically

the warranty therein, which covers Fairchild products.

Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/

FAN4174/FAN4274 • Rev. 1.0.4

www.fairchildsemi.com

13

Physical Dimensions

(0.45)

(1.30)

0.65

3.00±0.10

A

B

(5.50) (4.20)

4.90±0.15

3.00±0.10

PIN #1 ID

QUADRANT

LAND PATTERN RECOMMENDATION

SEE DETAIL A

TOP VIEW

1.10MAX

0.23

0.13

0.150

0.050

0.380

0.270

0.65

END VIEW

C

12° TOP & BOTTOM

SIDE VIEW

0.10

A B C

NOTES:

A. CONFORMS TO JEDEC MO-187

B, DIMENSIONS ARE IN MM

C. DIMENSIONS ARE EXCLUSIVE OF BURRS, MOLD

FLASH, AND TIE BAR EXTRUSIONS

D. DIMENSIONS AND TOLERANCES ARE PER

ASME Y14.5M, 1994

Gauge

Plane

Seating

Plane

E LANDPATTERN AS PER IPC7351 #TSOP65P490X110-8BL

8°

0°

0.25

MKT-MUA08AREVB

0.70

0.40

0.95

DETAIL A

Figure 34. 8-Lead Molded Small Outline Package (MSOP)

Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner

without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify

or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically

the warranty therein, which covers Fairchild products.

Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/

FAN4174/FAN4274 • Rev. 1.0.4

www.fairchildsemi.com

14

FAN4174/FAN4274 • Rev. 1.0.4

www.fairchildsemi.com

15


型号：	FAN4174IP5X
厂家：	FAIRCHILD SEMICONDUCTOR
描述：	Single and Dual, Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifier 单路和双路，超低成本，轨至轨I / O， CMOS放大器运算放大器放大器电路光电二极管
文件：	总15页 (文件大小：1092K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

FAN4174IP5X [FAIRCHILD]

相关型号：

FAN4174IP5X_NL

FAN4174IS5X

FAN4174IS5X

FAN4174IS5X_NL

FAN4174_08

FAN4230

FAN4230IM8

FAN4230IM8X

FAN4230IMU8

FAN4230IMU8X

FAN4272

FAN4272AM8X