INA849中文资料超低噪声 (1nV/√Hz)、高速（28MHz、35V/μ）、精密 (35μV) 仪表放大器数据手册TI规格书

描述 Description

The INA849 is an ultra-low noise instrumentation amplifier optimized for maximum accuracy in high-resolution systems and operation over a wide single-supply or dual-supply range. The device offers significantly lower input bias current than competitors as a result of super-beta input transistors. A state-of-the-art manufacturing process provides exceptionally low voltage noise, input offset voltage, and offset voltage drift.

Precisely matched integrated resistors provide a high, 92-dB (G = 1) common-mode rejection across the full input common-mode range. A single external resistor sets any gain from 1 to 10,000. The current-feedback topology of the INA849 provides wide bandwidth at higher gains for very-small, fast-moving signals. For example, the device provides 8 MHz of bandwidth at G = 100, and 28 MHz at a G = 1, with a fast 0.4-µs settling time (0.01%) for directly driving high-resolution, analog-to-digital converters (ADCs).

特性 Features

• Ultra-low noise: 1-nV/√Hz input voltage noise (typical)
• Low offset voltage: 35 µV (maximum)
• Low input bias current: 20 nA (maximum)
• Bandwidth: 28 MHz (G = 1), 8 MHz (G = 100)
• Common-mode rejection: 120 dB (minimum) for maximum gain
• Single supply: 8 V to 36 V
• Specified temperature range: –40°C to +125°C
• Packages: 8-pin SOIC and VSSOP