INA321:微功耗单电源 CMOS 仪表放大器

The INA321 family is a series of rail-to-rail output, micropower CMOS instrumentation amplifiers that offer wide-range, single-supply, as well as bipolar-supply operation. The INA321 family provides low-cost, low-noise amplification of differential signals with micropower current consumption of 40?A. When shutdown, the INA321 has a quiescent current of less than 1?A. Returning to normal operations within nanoseconds, the shutdown feature makes the INA321 optimal for low-power battery or multiplexing applications.

Configured internally for 5V/V gain, the INA321 offers exceptional flexibility with user-programmable external gain resistors. The INA321 reduces common-mode error over frequency and with CMRR remaining high up to 3kHz, line noise and line harmonics are rejected.

The low-power design does not compromise on bandwidth or slew rate, making the INA321 ideal for driving sample Analog-to-Digital (A/D) converters as well as general-purpose applications. With high precision, low cost, and small packaging, the INA321 outperforms discrete designs, while offering reliability and performance.

产品特性
  • LOW QUIESCENT CURRENT: 40?A/channel Shut Down: < 1?A
  • HIGH GAIN ACCURACY: G = 5, 0.02%, 2ppm/°C
  • GAIN SET WITH EXTERNAL RESISTORS
  • LOW OFFSET VOLTAGE: ±200?V
  • HIGH CMRR: 94dB
  • LOW BIAS CURRENT: 10pA
  • BANDWIDTH: 500kHz, G = 5V/V
  • RAIL-TO-RAIL OUTPUT SWING: (V+) - 0.02V
  • WIDE TEMPERATURE RANGE: -55°C to +125°C
  • SINGLE VERSION IN MSOP-8 PACKAGE AND DUAL VERSION IN TSSOP-14 PACKAGE
  • APPLICATIONS
    • INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermistor, Position
    • PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG
    • A/D CONVERTER SIGNAL CONDITIONING
    • DIFFERENTIAL LINE RECEIVERS WITH GAIN
    • FIELD UTILITY METERS
    • PCMCIA CARDS
    • COMMUNICATION SYSTEMS
    • TEST EQUIPMENT
    • AUTOMOTIVE INSTRUMENTATION
  • INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermistor, Position
  • PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG
  • A/D CONVERTER SIGNAL CONDITIONING
  • DIFFERENTIAL LINE RECEIVERS WITH GAIN
  • FIELD UTILITY METERS
  • PCMCIA CARDS
  • COMMUNICATION SYSTEMS
  • TEST EQUIPMENT
  • AUTOMOTIVE INSTRUMENTATION
参数parametrics
参数INA321INA2321
Number of Channels (#)12
Vs (Min) (V)2.52.5
Vs (Max) (V)5.55.5
CMRR (Min) (dB)9090
Input Offset (+/-) (Max) (uV)500500
Input Offset Drift (+/-) (Max) (uV/C)77
Input Bias Current (+/-) (Max) (nA)0.010.01
Noise at 1kHz (Typ) (nV/rt(Hz))100100
Iq (Typ) (mA)0.040.04
Bandwidth at Min Gain (Typ) (MHz)0.50.5
Gain (Min) (V/V)55
Gain (Max) (V/V)10001000
Gain Error (+/-) (Max) (%)0.10.1
RatingCatalogCatalog
Operating Temperature Range (C)-55 to 125-55 to 125
Package GroupVSSOPTSSOP
Approx. Price (US$)1.10 | 1ku1.75 | 1ku
Package Size: mm2:W x L (PKG)8VSSOP: 15 mm2: 4.9 x 3(VSSOP)14TSSOP: 32 mm2: 6.4 x 5(TSSOP)
Noise at 0.1 Hz - 10 Hz (Typ) (uVpp)2020
Gain Non-Linearity (+/-) (Max) (%)0.010.01
数据表?(1)
标题类型大小 (KB)日期
microPower Single-Supply CMOS Instrumentation AmplifierPDF9552006年 1月 31日
应用手册?(1)
标题类型大小 (KB)日期
所选封装材料的热学和电学性质PDF6452008年 10月 16日
选择与解决方案指南?(3)
标题类型大小 (KB)日期
模拟信号链路产品指南 (Rev. B)PDF55182013年 9月 3日
TI HealthTech Health GuidePDF48382013年 5月 2日
TI HealthTech Fitness GuidePDF35942013年 4月 10日
模型?(3)
标题种类类型大小 (KB)日期
INA321 PSpice ModelPSpice ModelZIP55?KB2011年 10月 4日
INA321 TINA-TI Reference DesignTINA-TI Reference DesignTSC86?KB2011年 10月 4日
INA321 TINA-TI Spice ModelTINA-TI Spice ModelZIP3?KB2011年 10月 4日
开发工具?(2)
培训内容型号类型
基于 SPICE 的模拟仿真程序TINA-TI电路设计和仿真
计算仪表放大器的输入共模范围INA-CMV-CALC计算工具
订购型号
型号试生产 / 生产材料状态温度(oC)价格(美金) | Quantity封装 | 引脚器件标记封装数量 | 载体
INA321E/250生产ACTIVE-55 to 1251.70 | 1kuVSSOP?(DGK)C21250 | SMALL T&R
INA321E/250G4生产ACTIVE-55 to 1251.70 | 1kuVSSOP?(DGK)C21250 | SMALL T&R
INA321E/2K5生产ACTIVE-55 to 1251.55 | 1kuVSSOP?(DGK)C212500 | LARGE T&R
INA321E/2K5G4生产ACTIVE-55 to 1251.55 | 1kuVSSOP?(DGK)C212500 | LARGE T&R
INA321EA/250生产ACTIVE-55 to 1251.25 | 1kuVSSOP?(DGK)C21250 | SMALL T&R
INA321EA/250G4生产ACTIVE-55 to 1251.25 | 1kuVSSOP?(DGK)C21250 | SMALL T&R
INA321EA/2K5生产ACTIVE-55 to 1251.10 | 1kuVSSOP?(DGK)C212500 | LARGE T&R
INA321EA/2K5G4生产ACTIVE-55 to 1251.10 | 1kuVSSOP?(DGK)C212500 | LARGE T&R
microPower Single-Supply CMOS Instrumentation Amplifier INA321
所选封装材料的热学和电学性质 DCP010505B
模拟信号链路产品指南 (Rev. B) BQ24392
TI HealthTech Health Guide TPS7A49
TI HealthTech Fitness Guide ADS1298ECGFE-PDK
INA321 PSpice Model INA321
INA321 TINA-TI Reference Design INA321
INA321 TINA-TI Spice Model INA321
INA321
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