MAX4194, MAX4195, MAX4196, MAX4197 Micropower, Single-Supply, Rail-to-Rail, Precision Instrumentation Amplifiers

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The MAX4194 is a variable-gain precision instrumentation amplifier that combines Rail-to-Rail; single-supply operation, outstanding precision specifications, and a high gain bandwidth. This amplifier is also offered in three fixed-gain versions: the MAX4195 (G = +1V/V), the MAX4196 (G = +10V/V), and the MAX4197 (G = +100V/V). The fixed-gain instrumentation amplifiers feature a shutdown function that reduces the quiescent current to 8µA. A traditional three operational amplifier configuration is used to achieve maximum DC precision.

The MAX4194–MAX4197 have rail-to-rail outputs and inputs that can swing to 200mV below the negative rail and to within 1.1V of the positive rail. All parts draw only 93µA and operate from a single +2.7V to +7.5V supply or from dual ±1.35V to &plumsn;3.75V supplies. These amplifiers are offered in 8-pin SO packages and are specified for the extended temperature range (-40°C to +85°C).

See the MAX4198/MAX4199 data sheet for single-supply, precision differential amplifiers.

Key Features

Applications/Uses

+2.7V Single-Supply Operation
Low Power Consumption
- 93µA Supply Current
- 8µA Shutdown Current
- (MAX4195/MAX4196/MAX4197)
High Common-Mode Rejection: 115dB (G = +10V/V)
Input Common-Mode Range Extends 200mV Below GND
Low 50µV Input Offset Voltage (G > +100V/V)
Low ±0.01% Gain Error (G = +1V/V)
250kHz -3dB Bandwidth (G = +1V/V, MAX4194)
Rail-to-Rail Outputs

	4mA to 20mA Loop Transmitters
	Battery-Powered/Portable Equipment
	Bridge Amplifier
	Data Acquisition Systems
	Medical Equipment
	Thermocouple Amplifiers
	Transducer Interface

Key Specifications: Differential/Instrumentation Amplifiers
Part Number	Architecture	Amps Per Pkg.	Rail to Rail	Gain (V/V)	Min. Total Supply (V)	Max. Total Supply (V)	Typ. Supply Current per Amp. (mA)	Max. V_OS (µV)	Typ. CMRR @ DC (dB)	Max. Input I_BIAS (nA)	Typ. Unity Gain BW (MHz)	Input Voltage Noise Density (nV/√Hz)	Input Current Noise Density (pA/√Hz)	Package	Operating Temp. Range (°C)	Price^**
MAX4194	Classic 3 Op. Amp.	1	Output Only	1 to 10000	2.7	7.5	0.093	450	115	20	0.25	72	0.1	SOIC/8	-40 to +85	$1.69 @ 1k
MAX4195				1					95		0.22	72				$1.69 @ 1k
MAX4196				10					115		0.34	31				$1.69 @ 1k
MAX4197				100					115		0.003	8.7				$1.69 @ 1k
See All Differential/Instrumentation Amplifiers (17)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.