PGA112开发板套件编程器的评估板-运算放大器规格书PDF中文资料

PGA112属于开发板套件编程器的评估板-运算放大器。由德州仪器制造生产的PGA112评估板 - 运算放大器运算放大器评估板是装有元器件的电路，用于提供特定集成电路或器件的工作实例。该产品族中的电路板提供了运算放大器实例。每个 IC 的通道类型有单通道、双通道、三通道、四通道和八通道，放大器类型包括音频、自动归零、缓冲器、斩波器、电流反馈、电流检测、差动、差分、四通道、仪表、隔离、J-FET、限幅、对数、功率、可编程增益、采样保持、跨阻、可变增益、视频、电压反馈和零漂移。

1 Features

• Gain programmable from

G = 0.2 to 10,000 by using external resistor

• Fully differential outputs with integrated clamping

• Low offset voltage: 10 μV (typ), 35 μV (max)

• Low offset drift: 0.1 μV/°C (typ), 0.3 μV/°C (max)

• Low input bias current: 5 nA (typ)

• Input stage noise: 3.2 nV/√Hz, 0.8 pA/√Hz

• Wide bandwidth: 22 MHz at G = 0.2,

15 MHz at G = 1

• Common-mode rejection: 106 dB (min) at G = 10,

120 dB (min) at 100 ≤ G ≤ 1000

• Power supply rejection: 110 dB (min) at G = 1

• Supply current: 6 mA (typ)

• Input overvoltage protection to ±40 V beyond

supplies

• Supply range:

– Single supply: 8 V to 36 V

– Dual supply: ±4 V to ±18 V

• Specified temperature range: –40°C to +125°C

• Tiny package: 16-pin VQFN

2 Applications

• Analog input module

• Flow transmitter

• LCD test

• Electrocardiogram (ECG)

• Surgical equipment

• Oscilloscope (DSO)

• Weigh scale

• Semiconductor test

3 Description

The INA851 is the industry's first high-precision

instrumentation amplifier with fully differential outputs.

This device is optimized to drive inputs of modern

high performance analog-to-digital converters (ADCs)

with fully differential inputs. The INA851 operates over

a very-wide, single-supply or dual-supply range. The

output stage gain can be set to either 0.2 or to 1 by

shorting or floating two pins. A single external resistor

sets any input stage gain from 1 to 10,000.

Compared to other amplifiers in the same class,

the INA851 offers very-low input bias current and

low input-referred current noise as a result of superbeta

input transistors. A state-of-the-art manufacturing

process provides exceptionally low voltage noise,

input offset voltage, and offset voltage drift. Additional

circuitry protects the device inputs against overvoltage

up to ±40 V beyond the power-supply voltages.The

device outputs feature built-in clamping circuitry to

protect the ADC or downstream device against

overdrive damage.

The device is designed for operation from either

an 8-V minimum single or ±4-V dual supply, and a

maximum of 36-V single or ±18 V dual supply.