MAX4198 Maxim, MAX4198 Datasheet

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MAX4198

Manufacturer Part Number
MAX4198
Description
The MAX4198/MAX4199 low-power, rail-to-rail differential amplifiers are ideal for single-supply applications that benefit from a low 0
Manufacturer
Maxim
Datasheet

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MAX4198ESA
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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 fac-
tory trimmed to a fixed gain of +1V/V, and the MAX4199
is trimmed to a fixed gain of +10V/V. Capable of operat-
ing 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 shut-
down 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 amplifi-
er 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-to-
rail instrumentation amplifiers, see the MAX4194–
MAX4197 data sheet.
Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc.
19-1445; Rev 1; 6/04
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
IN+
( ) ARE FOR MAX4199 ONLY.
IN-
Instrumentation Amplifier Building Block
Differential Voltage Amplifiers
Data-Acquisition Systems
Portable/Battery-Powered Equipment
Transducer Interface
Current-Sense Amplifiers
2
3
MAX4198
MAX4199
________________________________________________________________ Maxim Integrated Products
25kΩ
25kΩ
Micropower, Single-Supply, Rail-to-Rail
General Description
Functional Diagram
7
25kΩ (250kΩ)
25kΩ (250kΩ)
V
CC
Applications
Precision Differential Amplifiers
4
V
EE
5 FB
6
1
OUT
REF
MAX4198EUA
MAX4198ESA
MAX4199EUA
MAX4199ESA
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
TOP VIEW
PART
REF
IN+
V
IN-
EE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
1
2
4
3
Ordering Information
µMAX/SO
MAX4198
MAX4199
Pin Configuration
PIN-
PACKAGE
8 µMAX
8 SO
8 µMAX
8 SO
6
8
7
5
SHDN
V
OUT
FB
CC
Features
GAIN
(V/V)
10
10
1
1
1

Related parts for MAX4198

MAX4198 Summary of contents

Page 1

... 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 fac- tory trimmed to a fixed gain of +1V/V, and the MAX4199 is trimmed to a fixed gain of +10V/V. Capable of operat- ing from a single +2.7V to +7.5V supply or from dual ± ...

Page 2

... 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. ELECTRICAL CHARACTERISTICS—MAX4198 (+5V Supply +5V 0V 25kΩ ...

Page 3

... Micropower, Single-Supply, Rail-to-Rail ELECTRICAL CHARACTERISTICS—MAX4198 (+5V Supply) (continued +5V 0V 25kΩ tied unless otherwise noted.) (Note 1) A MIN MAX PARAMETER SYMBOL Capacitive-Load Stability -3dB Bandwidth BW Slew Rate Settling Time to 0.1% Total Harmonic Distortion Supply Current Shutdown Supply Current ...

Page 4

Micropower, Single-Supply, Rail-to-Rail Precision Differential Amplifiers ELECTRICAL CHARACTERISTICS—MAX4199 (+5V Supply +5V 0V 25kΩ tied unless otherwise noted.) (Note 1) A MIN MAX PARAMETER ...

Page 5

... SHDN Input Logic High Voltage (Note 3) Input Logic Low Voltage (Note 3) Note 1: The MAX4198EUA and the MAX4199EUA are 100% production tested at +25°C. All temperature limits are guaranteed by design. Note 2: Guaranteed by PSR test. Note 3: When shutdown input is at logic high, the part is active; when at logic low, the part is in shutdown. ...

Page 6

... FREQUENCY (Hz) OUTPUT VOLTAGE HIGH AND LOW vs. LOAD RESISTANCE 1000 MAX4199 800 600 400 MAX4198 200 0 MAX4199 -200 -400 MAX4198 -600 -800 -1000 1M 0 LOAD (kΩ) GAIN ERROR vs. TEMPERATURE 0.008 0.006 0.004 ...

Page 7

... P-P SMALL-SIGNAL PULSE RESPONSE 50µs/div 10k MAX4199 LARGE-SIGNAL PULSE RESPONSE MAX4198toc14 INPUT 500mV/div OUTPUT 500mV/div 50µs/div MAX4198 SMALL-SIGNAL PULSE RESPONSE WITH EXCESSIVE CAPACITIVE LOAD AND ISOLATION RESISTOR MAX4198toc17 INPUT 50mV/div C = 1060pF 50Ω ISO OUTPUT 50mV/div 50µs/div = 1V , P-P MAX4198toc12 INPUT ...

Page 8

... SHDN CC OUT MAX4199 SMALL-SIGNAL PULSE RESPONSE WITH EXCESSIVE CAPACITIVE LOAD MAX4198toc20 C = 760pF 0Ω ISO 50µs/div MAX4199 TIME EXITING SHUTDOWN MAX4198toc23 10µs/div MAX4198 HISTOGRAM (GAIN ACCURACY BASED ON 200 UNITS) 100 -0.08 -0.06 -0.04 -0.02 0 0.02 0.04 0.06 0.08 GAIN ERROR (%) = 100mV , large-signal V ...

Page 9

... Description The MAX4198/MAX4199 are precision low-power differ- ential amplifiers with factory-trimmed internal gain-set- ting resistors. The MAX4198 is trimmed to a gain of +1V/V and the MAX4199 is trimmed to a gain of +10V/V. The Functional Diagram shows the internal structure of the MAX4198/MAX4199. Although the resistors are pre- cision matched, their absolute value varies by ± ...

Page 10

... SHDN input logic thresholds are referenced to , not to GND. Pulling SHDN 2.5V below the positive V CC rail places the amplifiers in a 12µA (max) shutdown mode. The MAX4198/MAX4199 exit or enter shutdown in 35µs. In shutdown, the OUT pin is high-impedance. Applications Information Driving Capacitive Loads The MAX4198/MAX4199 are relatively immune to oscilla- tions caused when driving large capacitive loads ...

Page 11

... For applications that require a complete low-power instrumentation amplifier, refer to the MAX4194– MAX4197 data sheet. Some differential to single-ended voltage amplifier applications that do not require a high input impedance can use the MAX4198/MAX4199 for gains of +1V/V or +10V/V. The MAX4198/MAX4199 can 2 IN IN+ ...

Page 12

... FRONT VIEW Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © ...

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