INA2128 是一款双路低功耗通用仪表放大器 (IA),可提供出色的准确性。此器件采用多功能三级运算放大器设计,尺寸小巧,适用于多种应用。即使在高增益(G = 100 时为 200 kHz)情况下,电流反馈输入电路也可提供宽带宽。可通过单个外部电阻器在 1 到 10,000 范围内设置任意增益。内部输入保护可经受高达 ±40V 的电压且无损坏。
INA2128 经过激光修整,具有极低失调电压 (50µV)、极低温漂 (0.5µV/°C) 和高共模抑制(G ≥ 100 时为 120dB)。该器件采用低至 ±2.25V 的电源电压,每 IA 静态电流仅 700µA,非常适合电池供电系统和多通道系统。
INA2128 采用 SOIC-16 封装,额定温度范围 -40°C 至 +85°C。
| Number of channels | 2 |
| Vs (max) (V) | 36 |
| Vs (min) (V) | 4.5 |
| Input offset (±) (max) (µV) | 50 |
| Voltage gain (min) (V/V) | 1 |
| Voltage gain (max) (V/V) | 10000 |
| Noise at 1 kHz (typ) (nV√Hz) | 8 |
| Features | Current Feedback, Overvoltage protection |
| CMRR (min) (dB) | 120 |
| Input offset drift (±) (max) (V/°C) | 0.0000005 |
| Input bias current (±) (max) (nA) | 5 |
| Iq (typ) (mA) | 0.7 |
| Bandwidth at min gain (typ) (MHz) | 1.3 |
| Gain error (±) (max) (%) | 0.5 |
| Operating temperature range (°C) | -40 to 85 |
| Rating | Catalog |
| Type | Resistor |
| Gain nonlinearity (±) (max) (%) | 0.002 |
| Output swing headroom (to negative supply) (typ) (V) | 0.8 |
| Output swing headroom (to positive supply) (typ) (V) | -0.9 |
| Input common mode headroom (to negative supply) (typ) (V) | 1.7 |
| Input common mode headroom (to positive supply) (typ) (V) | -1.4 |
| Noise at 0.1 Hz to 10 Hz (typ) (µVPP) | 0.2 |
| SOIC (DW) | 16 | 106.09 mm² 10.3 x 10.3 |