MAX4194：微功耗、单电源、满摆幅、精密仪表放大器

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 ±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.

关键特性

Low Power Consumption Is Ideal for Remote-Sensing and Battery-Powered Applications
- +2.7V Single-Supply Operation
- Low Power Consumption
  - 93µA Supply Current
  - 8µA Shutdown Current (MAX4195/MAX4196/MAX4197)
Precision Specifications Maximize Sensor Peformance
- 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

MAX4194、MAX4195、MAX4196、MAX4197：引脚配置

应用

4mA至20mA环变送器
电池供电/便携式设备
桥式放大器
数据采集系统
医疗装置
热电偶放大器
变送器接口

数据手册DataSheet

语言	下载文件	备注
英文	MAX4194-MAX4197.pdf	Rev 2; 05/2005

关键参数

Part Number	Architecture	Amps.	V_CMVR	Rail to Rail	A_V (V/V)	V_SUPPLY (Total) (V)	V_SUPPLY (Total) (V)	I_CC per Amp. (mA)	I_CC per Amp. (mA)	V_OS (µV)	CMRR @DC (dB)	PSRR @DC (dB)	Input I_BIAS (nA)	Unity Gain BW (MHz)	Slew Rate (V/µs)	V_CMVR (V)	e_n (nV/√Hz)	i_n (pA/√Hz)	Noise Spec'd @	Low Pwr. Shutdn	Oper. Temp. (°C)	Package/Pins	Budgetary Price
Part Number	Architecture	Amps.	to Neg. Rail	Rail to Rail	A_V (V/V)	min	max	typ	max	max	typ	typ	max	typ	typ	V_CMVR (V)	<	i_n (pA/√Hz)	Noise Spec'd @	Low Pwr. Shutdn	Oper. Temp. (°C)	Package/Pins	See Notes
MAX4194	Classic 3 Op. Amp.	1	No	Output Only	1 to 10000	2.7	7.5	0.093	0.11	450	115	120	20	0.25	0.06	VEE+0.2 to VCC-1.1	72	0.1	10kHz	No	-40 to +85	SOIC(N)/8	$2.31 @1k
MAX4195					1						95			0.22		VEE-0.2 to VCC-1.1	72					SOIC(N)/8	$2.74 @1k
MAX4196					10						115			0.34		VEE+0.2 to VCC-1.1	31					SOIC(N)/8	$2.31 @1k
MAX4197					100						115			0.003		VEE+0.2 to VCC-1.1	8.7					SOIC(N)/8	$2.58 @1k

技术资料

质量和环境数据

MAX4194.pdf

订购型号

型号	状况	推荐替代产品	封装	温度	RoHS/无铅
MAX4194ESA	停止供货	MAX4194ESA+	SOIC(N),；8引脚；30.9mm²	-40°C至+85°C	RoHS/无铅：否
MAX4194ESA+	生产中		SOIC(N),；8引脚；30.9mm²	-40°C至+85°C	RoHS/无铅：无铅
MAX4194ESA+T	生产中		SOIC(N),；8引脚；30.9mm²	-40°C至+85°C	RoHS/无铅：无铅
MAX4194ESA-G069	停止供货		N.SO；	-40°C至+85°C	参考数据资料
MAX4194ESA-T	停止供货	MAX4194ESA+T	SOIC(N),；8引脚；30.9mm²	-40°C至+85°C	RoHS/无铅：否
MAX4194ESA-TG069	停止供货		N.SO；	-40°C至+85°C	参考数据资料