零漂移、HV 可编程增益放大器

PGA280 是一款高精度仪表放大器，具有数字控制增益和信号完整性测试功能。该器件具有低失调电压，且失调电压、增益温漂和 1/f 噪声近乎为零，还具有出色的线性度、共模抑制比和电源抑制比，可支持高分辨率的精密测量。36V 电源电压和宽、高阻抗输入范围符合通用信号测量的要求。\n\n特殊电路可防止多路复用器 (MUX) 开关产生浪涌电流。另外，输入开关矩阵可实现在过载条件下轻松进行重新配置和系统级诊断。 \n\n可配置的通用输入/输出 (GPIO) 提供数种控制和通信 功能。SPI 经扩展可与更多器件通信，仅需四个 ISO 耦合器即可实现隔离。PGA280 采用 TSSOP-24 封装，额定工作 • 宽输入电压范围：在 ±18V 电源下，为 ±15.5V\n• 二进制增益步长：128V/V 至 1/8V/V\n• 额外比例缩放因子：1V/V 和 1⅜V/V\n• 低失调电压：在 G = 128 时为 3µV\n• 失调电压的近零长期漂移 \n• 近零增益温漂：0.5ppm/°C\n• 出色的线性度：1.5ppm\n• 出色的共模抑制比 (CMRR)：140dB\n• 高输入阻抗\n• 超低的 1/f 噪声\n• 差分信号输出\n• 过载检测\n• 输入配置开关矩阵\n• 断线测试电流 \n• 可扩展 SPI™（具有校验和）\n• 通用 I/O 端口\n• TSSOP-24 封装;

TI

德州仪器

PGA280 Zerø-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier

1 Features 1• Wide input range: ±15.5 V at ±18-V supply • Binary gain steps: 128V/V to 1/8 V/V • Additional scaling factor: 1 V/V and 1⅜ V/V • Low offset voltage: 3 μV at G = 128 • Near-zero long-term drift of offset voltage • Near-zero gain drift: 0.5 ppm/°C • Excellent linearity: 1.5 ppm

文件：974.4 Kbytes 页数：50 Pages

TI

德州仪器

丝印：PGA280A；Package：TSSOP(PW)；PGA280 Zerø-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier

1 Features 1• Wide input range: ±15.5 V at ±18-V supply • Binary gain steps: 128V/V to 1/8 V/V • Additional scaling factor: 1 V/V and 1⅜ V/V • Low offset voltage: 3 μV at G = 128 • Near-zero long-term drift of offset voltage • Near-zero gain drift: 0.5 ppm/°C • Excellent linearity: 1.5 ppm

文件：974.4 Kbytes 页数：50 Pages

TI

德州仪器

丝印：PGA280A；Package：TSSOP；PGA280 Zerø-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier

1 Features 1• Wide input range: ±15.5 V at ±18-V supply • Binary gain steps: 128V/V to 1/8 V/V • Additional scaling factor: 1 V/V and 1⅜ V/V • Low offset voltage: 3 μV at G = 128 • Near-zero long-term drift of offset voltage • Near-zero gain drift: 0.5 ppm/°C • Excellent linearity: 1.5 ppm

文件：970.86 Kbytes 页数：49 Pages

TI

德州仪器

丝印：PGA280A；Package：TSSOP；PGA280 Zerø-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier

1 Features 1• Wide input range: ±15.5 V at ±18-V supply • Binary gain steps: 128V/V to 1/8 V/V • Additional scaling factor: 1 V/V and 1⅜ V/V • Low offset voltage: 3 μV at G = 128 • Near-zero long-term drift of offset voltage • Near-zero gain drift: 0.5 ppm/°C • Excellent linearity: 1.5 ppm

文件：970.86 Kbytes 页数：49 Pages

TI

德州仪器

丝印：PGA280A；Package：TSSOP(PW)；PGA280 Zerø-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier

1 Features 1• Wide input range: ±15.5 V at ±18-V supply • Binary gain steps: 128V/V to 1/8 V/V • Additional scaling factor: 1 V/V and 1⅜ V/V • Low offset voltage: 3 μV at G = 128 • Near-zero long-term drift of offset voltage • Near-zero gain drift: 0.5 ppm/°C • Excellent linearity: 1.5 ppm

文件：974.4 Kbytes 页数：50 Pages

TI

德州仪器

丝印：PGA280A；Package：TSSOP(PW)；PGA280 Zerø-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier

1 Features 1• Wide input range: ±15.5 V at ±18-V supply • Binary gain steps: 128V/V to 1/8 V/V • Additional scaling factor: 1 V/V and 1⅜ V/V • Low offset voltage: 3 μV at G = 128 • Near-zero long-term drift of offset voltage • Near-zero gain drift: 0.5 ppm/°C • Excellent linearity: 1.5 ppm

文件：974.4 Kbytes 页数：50 Pages

TI

德州仪器

丝印：PGA280A；Package：TSSOP；PGA280 Zerø-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier

1 Features 1• Wide input range: ±15.5 V at ±18-V supply • Binary gain steps: 128V/V to 1/8 V/V • Additional scaling factor: 1 V/V and 1⅜ V/V • Low offset voltage: 3 μV at G = 128 • Near-zero long-term drift of offset voltage • Near-zero gain drift: 0.5 ppm/°C • Excellent linearity: 1.5 ppm

文件：970.86 Kbytes 页数：49 Pages

TI

德州仪器

丝印：PGA280A；Package：TSSOP；PGA280 Zerø-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier

1 Features 1• Wide input range: ±15.5 V at ±18-V supply • Binary gain steps: 128V/V to 1/8 V/V • Additional scaling factor: 1 V/V and 1⅜ V/V • Low offset voltage: 3 μV at G = 128 • Near-zero long-term drift of offset voltage • Near-zero gain drift: 0.5 ppm/°C • Excellent linearity: 1.5 ppm

文件：970.86 Kbytes 页数：49 Pages

TI

德州仪器

丝印：PGA280A；Package：TSSOP(PW)；PGA280 Zerø-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier

1 Features 1• Wide input range: ±15.5 V at ±18-V supply • Binary gain steps: 128V/V to 1/8 V/V • Additional scaling factor: 1 V/V and 1⅜ V/V • Low offset voltage: 3 μV at G = 128 • Near-zero long-term drift of offset voltage • Near-zero gain drift: 0.5 ppm/°C • Excellent linearity: 1.5 ppm

文件：974.4 Kbytes 页数：50 Pages

TI

德州仪器