INA823 是一款集成仪表放大器,可提供低功耗并且可在较宽的单电源或双电源电压范围内工作。可通过单个外部电阻器在 1 到 10,000 范围内设置任意增益。该器件可提供低输入失调电压、低失调电压漂移、低输入偏置电流和低电流噪声,同时具有成本效益。附加电路可以为输入提供高达 ±60V 的过压保护。
INA823 经过优化,可提供较高的共模抑制比。当 G = 1 时,整个输入共模范围内共模抑制比超过 84dB。INA823 可实现宽共模电压范围,电压低至负电源以下 150mV。根据设计,此器件采用低电压运行,由 2.7V 单电源和高达 ±18V 的双电源供电。可提供低功耗并且可在单电源下工作,因而可支持手持电池供电系统。
| Number of channels | 1 |
| Vs (max) (V) | 36 |
| Vs (min) (V) | 2.7 |
| Input offset (±) (max) (µV) | 100 |
| Voltage gain (min) (V/V) | 1 |
| Voltage gain (max) (V/V) | 1000 |
| Noise at 1 kHz (typ) (nV√Hz) | 21 |
| Features | Cost Optimized, Low power, Overvoltage protection |
| CMRR (min) (dB) | 120 |
| Input offset drift (±) (max) (V/°C) | 0.0000012 |
| Input bias current (±) (max) (nA) | 8 |
| Iq (typ) (mA) | 0.18 |
| Bandwidth at min gain (typ) (MHz) | 1.9 |
| Gain error (±) (max) (%) | 0.2 |
| Operating temperature range (°C) | -40 to 125 |
| Rating | Catalog |
| Type | Resistor |
| Gain nonlinearity (±) (max) (%) | 0.001 |
| Output swing headroom (to negative supply) (typ) (V) | 0.15 |
| Output swing headroom (to positive supply) (typ) (V) | -0.15 |
| Input common mode headroom (to negative supply) (typ) (V) | -0.15 |
| Input common mode headroom (to positive supply) (typ) (V) | -1 |
| Noise at 0.1 Hz to 10 Hz (typ) (µVPP) | 0.4 |
| SOIC (D) | 8 | 29.4 mm² 4.9 x 6 |
| VSSOP (DGK) | 8 | 14.7 mm² 3 x 4.9 |