Rainbow Electronics MAX4198, MAX4199 User Manual

MAX4198/MAX4199

Micropower, Single-Supply, Rail-to-Rail

Precision Differential Amplifiers

________________________________________________________________

Maxim Integrated Products

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468.

General Description

The MAX4198/MAX4199 low-power, Rail-to-Rail®differential amplifiers are ideal for single-supply applications that benefit from a low 0.01% gain error. The MAX4198 is factory trimmed to a fixed gain of +1V/V, and the MAX4199 is trimmed to a fixed gain of +10V/V. Capable of operating from a single +2.7V to +7.5V supply or from dual ±1.35V to ±3.75V supplies, they consume only 42µA while achieving -3dB bandwidths of 175kHz (MAX4198) and 45kHz (MAX4199). These amplifiers feature a shutdown mode that reduces the supply current to 6.5µA.

The MAX4198/MAX4199 can drive 5kΩ loads to within 100mV from each rail. The standard differential amplifier configurations provide common-mode rejection of 90dB for the MAX4198 and 110dB for the MAX4199. The input common-mode voltage range for the MAX4198 extends 100mV Beyond-the-Rails™.

The MAX4198/MAX4199 are offered in a space-saving 8-pin µMAX package. For complete micropower, rail-torail instrumentation amplifiers, see the MAX4194– MAX4197 data sheet.

Applications

Instrumentation Amplifier Building Block Differential Voltage Amplifiers Data-Acquisition Systems Portable/Battery-Powered Equipment Transducer Interface Current-Sense Amplifiers

Features

♦ Low 0.01% Gain Error ♦ High Common-Mode Rejection: 110dB (MAX4199) ♦ 10µV Input Offset Voltage (MAX4199)

30µV Input Offset Voltage (MAX4198)

♦ +2.7V to +7.5V Single-Supply Operation ♦ 42µA Supply Current ♦ 175kHz (MAX4198) and 45kHz (MAX4199)

-3dB Bandwidth

♦ 6.5µA Shutdown Current ♦ Rail-to-Rail Outputs Drive 5kΩ Loads ♦ Input Voltage Range Extends 100mV Beyond-the-

Rails (MAX4198)

♦ Available in Space-Saving 8-Pin µMAX Package

OUT

FBV

1 2

87SHDN

IN-

IN+

REF

µMAX/SO

TOP VIEW

MAX4198 MAX4199

19-1445; Rev 0; 4/99

PART

MAX4198EUA

MAX4198ESA -40°C to +85°C

-40°C to +85°C

TEMP. RANGE

PIN-

PACKAGE

8 µMAX 8 SO

Pin Configuration

Ordering Information

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. Beyond-the-Rails is a trademark of Maxim Integrated Products.

GAIN

(V/V)

1 MAX4199EUA MAX4199ESA10-40°C to +85°C

-40°C to +85°C 8 µMAX 8 SO 10

MAX4198 MAX4199

25k (250k)25k

( ) ARE FOR MAX4199 ONLY.

IN-

IN+

OUT

REF

Functional Diagram

MAX4198/MAX4199

Micropower, Single-Supply, Rail-to-Rail Precision Differential Amplifiers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—MAX4198 (+5V Supply)

(VCC= +5V, VEE= 0V, RL= 25kΩ tied to VCC/ 2, V

REF

= VCC/ 2, V

SHDN

= VCC- 1.5V, typical values are at TA= +25°C,

= T

MIN

to T

MAX

, unless otherwise noted.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Supply Voltage (VCCto VEE)..................................................+8V

All Other Pins to GND ......................(V

- 0.3V) to (VCC+ 0.3V)

Output Short Circuit Duration (to V

or VEE)............Continuous

Continuous Power Dissipation (T

= +70°C)

SO (derate 9.09mW/°C above +70°C)..........................471mW

µMAX (derate 4.1mW/°C above +70°C) .......................330mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range............................ -65°C to +150°C

Lead Temperature (soldering, 10sec).............................+300°C

+ 0.1V ≤

OUT

≤ VCC-

0.1V

Sink/source

RL= 5kΩ, ±10mV input overdrive

RL= 25kΩ, ±10mV input overdrive

f = 0.1Hz to 10Hz

f = 10kHz

VCM= VEE- 0.1V to VCC+ 0.1V

f = 100Hz

f = 10Hz

Common-mode

IN- differential-mode

MAX4198ESA MAX4198EUA IN+ differential-mode

+2.7V ≤ VCC≤ +7.5V, VCM= +1.5V, V

REF

= +1.5V, RL= 25kΩ to +1.5V

CONDITIONS

Gain Temperature Coefficient ppm/°C

±0.2 ±3

±0.01 ±0.1

mA±5.5Short-Circuit Current

+ 0.2 V

+ 0.1 to

to V

- 0.2 V

- 0.1

Output Voltage Swing V

+ 0.1 V

+ 0.03 to

to V

- 0.1 V

- 0.03

µV

RMS

7.8

Input Noise Voltage

nV√Hz

120

dB90 115PSRPower-Supply Rejection

±1.35 ±3.75

2.7 7.5

74 90

CMR

DC Common-Mode Rejection

kΩ

Input Resistance

Supply Voltage Range (Note 2)

±0.5 ±5

µV/°C

±1 ±20

TCOInput Offset Voltage Drift

UNITSMIN TYP MAXSYMBOLPARAMETER

Single supply Dual supply

Guaranteed by CMR test VVEE- 0.1 VCC+ 0.1V

Input Voltage Range

VCM= VEE- 0.1 to VCC+ 0.1V, f = 60Hz, f = 120Hz

dB90CMR

AC Common-Mode Rejection

RL= 25kΩ, VEE+ 0.1V ≤ V

OUT

≤ VCC- 0.1V

VCM= V

/ 2,

TA= +25°C

RL= 5kΩ, VEE+ 0.2V ≤ V

OUT

≤ VCC- 0.2V

±0.01 ±0.1

Gain Error

MAX4198ESA

±0.65 ±6MAX4198EUA

VEE+ 0.1V ≤ V

OUT

≤ VCC- 0.1VNonlinearity %±0.0003

70 90MAX4198EUA

MAX4198ESA

TA= +25°C, VCM= VCC/ 2

TA= T

MIN

to T

MAX

VCM= VCC/ 2

±750

±100 ±1000

±30 ±500

µV

±2300

Input Offset Voltage

MAX4198ESA MAX4198EUA MAX4198ESA MAX4198EUA

MAX4198/MAX4199

Micropower, Single-Supply, Rail-to-Rail

Precision Differential Amplifiers

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—MAX4198 (+5V Supply) (continued)

(VCC= +5V, VEE= 0V, RL= 25kΩ tied to VCC/ 2, V

REF

= VCC/ 2, V

SHDN

= VCC- 1.5V, typical values are at TA= +25°C,

= T

MIN

to T

MAX

, unless otherwise noted.) (Note 1)

ELECTRICAL CHARACTERISTICS—MAX4198 (+3V Supply)

(VCC= +3V, VEE= 0V, RL= 25kΩ tied to VCC/ 2, V

REF

= VCC/ 2, V

SHDN

= VCC- 1.5V, typical values are at TA= +25°C, TA= T

MIN

to T

MAX,

unless otherwise noted.) (Note 1)

OUT

= 3.5V, settled to within 0.1%

SHDN

= V

SHDN

= VCC- 1.5V or V

SHDN

= V

VCM= VCC/ 2, V

IN+

= V

IN-

OUT

= 2Vp-p, f = 1kHz

CONDITIONS

µs800Power-Up Delay

µA-0.1 0.1

SHDN Input Bias Current

VVCC- 2.5V

Input Logic Voltage Low (Note 3)

VVCC- 1.5V

Input Logic Voltage High (Note 3)

µA6.5 12I

SHDN

Shutdown Supply Current

µA45 55I

Supply Current

pF690C

Capacitive Load Stability

%0.001THDTotal Harmonic Distortion

UNITSMIN TYP MAXSYMBOLPARAMETER

SHDN

= VCC- 2.5V to VCC- 1.5V,

OUT

= 3.5V, settled to within 0.1%

µs28t

ON/OFF

Enable/Disable Settling Time

±0.65 ±6

VEE+ 0.1V ≤ V

OUT

≤ VCC-

0.1V

MAX4198ESA

Guaranteed by CMR test

VCM= V

/ 2,

TA= +25°C

Sink/source

RL= 5kΩ, ±10mV input overdrive

VEE- 0.1 VCC+ 0.1

RL= 25kΩ, ±10mV input overdrive

RL= 25kΩ, VEE+ 0.1V ≤ V

OUT

≤ VCC- 0.1V

VCM= VEE- 0.1 to VCC+ 0.1

TA= +25°C, VCM= VCC/ 2

MAX4198ESA MAX4198EUA

RL= 5kΩ, VEE+ 0.2V ≤ V

OUT

≤ VCC- 0.2V

CONDITIONS

MAX4198EUA

Gain Temperature Coefficient ppm/°C

±0.2 ±3

±0.01 ±0.1

mA±4.5Short-Circuit Current

+ 0.2 V

+ 0.1 to

to V

- 0.2 V

- 0.1

Output Voltage Swing V

+ 0.1 V

+ 0.03 to

to V

- 0.1 V

- 0.03

Gain Error

±850

Input Voltage Range

±100 ±1100

±35 ±600

74 90

CMR

DC Common-Mode Rejection

µV

±2400

Input Offset Voltage

±0.5 ±5.0

µV/°C

±1.0 ±20

TCOInput Offset Voltage Drift

UNITSMIN TYP MAXSYMBOLPARAMETER

MAX4198ESA MAX4198EUA MAX4198ESA MAX4198EUA

6.5

VCM= V

/ 2, V

DIFF

= 0I

Supply Current µA42

µAI

SHDN

Shutdown Supply Current

VCC- 2.5

Input Logic High Voltage (Note 3) VVCC- 1.5

Input Logic Low Voltage (Note 3)

TA= T

MIN

to T

MAX

VCM= VCC/ 2

70 90MAX4198EUA

MAX4198ESA

OUT

= 2Vp-p step µs34t

Settling Time to 0.1%

OUT

= 2Vp-p step V/µs0.07SRSlew Rate

OUT

≤ 0.1Vp-p, VCM= VCC/ 2 kHz175BW

-3dB

-3dB Bandwidth

MAX4199EUA

MAX4198/MAX4199

Micropower, Single-Supply, Rail-to-Rail Precision Differential Amplifiers

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—MAX4199 (+5V Supply)

(VCC= +5V, VEE= 0V, RL= 25kΩ tied to VCC/ 2, V

REF

= VCC/ 2, V

SHDN

= VCC- 1.5V, typical values are at TA= +25°C,

= T

MIN

to T

MAX

, unless otherwise noted.) (Note 1)

±2 ±10

VEE+ 0.1V ≤ V

OUT

≤ VCC-

0.1V

MAX4199ESA

Guaranteed by CMR test

VCM= V

/ 2,

TA= +25°C

Sink/source

RL= 5kΩ, ±10mV input overdrive

VEE- 0.1 VCC- 1.0

RL= 25kΩ, ±10mV input overdrive

f = 0.1Hz to 10Hz

f = 10kHz

RL= 25kΩ, VEE+ 0.1V ≤ V

OUT

≤ VCC- 0.1V

VCM= VEE- 0.1V to VCC- 1.0V

f = 100Hz

f = 10Hz

Single supply

MAX4199ESA MAX4199EUA

RL= 5kΩ, VEE+ 0.2V ≤ V

OUT

≤ VCC- 0.2V

+2.7V ≤ VCC≤ +7.5V, VCM= +1.5V, V

REF

= +1.5V, RL= 25kΩ to +1.5V

CONDITIONS

MAX4199EUA

600

Gain Temperature Coefficient ppm/°C

±1 ±5

0.1

VEE+ 0.1V ≤ V

OUT

≤ VCC- 0.1VNonlinearity %±0.0003

±0.01 ±0.3

mA±5.5Short-Circuit Current

OUT

= 2Vp-p

+ 0.2 V

+ 0.1 to

to V

- 0.2 V

- 0.1

Output Voltage Swing V

+ 0.1 V

+ 0.02 to

to V

- 0.1 V

- 0.02

Gain Error

µV

RMS

6.6

Input Noise Voltage

nV√Hz

Capacitive Load Stability pF

45V

OUT

≤ 0.1Vp-p, VCM= VCC/ 2

-3dB

-3dB Bandwidth kHz Slew Rate V/µs

dB90 120PSRPower-Supply Rejection

Input Voltage Range (Note 2)

±1.35 ±3.75

VCM= VEE- 0.1V to VCC- 1.0V, f = 60Hz

2.7 7.5

dB110CMR

84 110

CMR

DC Common-Mode Rejection

kΩ

275

AC Common-Mode Rejection

25Input Resistance

Supply Voltage Range (Note 2)

±0.25 ±3

µV/°C

±0.75 ±15

TCOInput Offset Voltage Drift

275

UNITSMIN TYP MAXSYMBOLPARAMETER

IN+ differential mode IN- differential mode Common-mode

37V

OUT

= 2Vp-p stept

Settling Time to 0.1% µs

0.001V

OUT

= 2Vp-p, f = 1kHzTHDTotal Harmonic Distortion %

6.5 12V

SHDN

= V

45 55VCM= VCC/ 2, V

IN+

= V

IN-

Supply Current µA

SHDN

Shutdown Supply Current µA

80 110MAX4199EUA

MAX4199ESA

TA= +25°C, VCM= VCC/ 2

TA= T

MIN

to T

MAX

VCM= VCC/ 2

±500

±100 ±600

±10 ±300

µV

±1475

Input Offset Voltage

MAX4199ESA MAX4199EUA MAX4199ESA MAX4199EUA

Dual supply

+ 8 hidden pages