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INA851

現行

具有 OVP (±40 V) 的低雜訊 (3.2 nV/√Hz) 高速 (22 MHz) 全差動儀器放大器

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INA851

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 8 Input offset (±) (max) (µV) 35 Voltage gain (min) (V/V) 0.2 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 3.2 Features Fully Differential, Overvoltage protection, Small Size, Super-beta, Ultra-low noise CMRR (min) (dB) 120 Input offset drift (±) (max) (µV/°C) 0.4 Input bias current (±) (max) (nA) 20 Iq (typ) (mA) 6 Bandwidth at min gain (typ) (MHz) 22 Gain error (±) (max) (%) 0.15 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.0002 Output swing headroom (to negative supply) (typ) (V) 1.4 Output swing headroom (to positive supply) (typ) (V) -1.4 Input common mode headroom (to negative supply) (typ) (V) 2.5 Input common mode headroom (to positive supply) (typ) (V) -2.5 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.1
Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 8 Input offset (±) (max) (µV) 35 Voltage gain (min) (V/V) 0.2 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 3.2 Features Fully Differential, Overvoltage protection, Small Size, Super-beta, Ultra-low noise CMRR (min) (dB) 120 Input offset drift (±) (max) (µV/°C) 0.4 Input bias current (±) (max) (nA) 20 Iq (typ) (mA) 6 Bandwidth at min gain (typ) (MHz) 22 Gain error (±) (max) (%) 0.15 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.0002 Output swing headroom (to negative supply) (typ) (V) 1.4 Output swing headroom (to positive supply) (typ) (V) -1.4 Input common mode headroom (to negative supply) (typ) (V) 2.5 Input common mode headroom (to positive supply) (typ) (V) -2.5 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.1
VQFN (RGT) 16 9 mm² 3 x 3
  • 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
  • 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

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 super-beta 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.

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 super-beta 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.
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重要文件 類型 標題 格式選項 日期
* Data sheet INA851 Precision, Low-Noise, Fully Differential Output Instrumentation Amplifier With Attenuating Gain and Output Clamping datasheet (Rev. A) PDF | HTML 2022年 10月 26日
Application brief Optimizing Strain Gauge Accuracy With INA851 vs. Discrete Design PDF | HTML 2023年 11月 14日
Product overview First High-Precision Instrumentation Amplifier With Fully- Differential Outputs PDF | HTML 2023年 10月 6日
Product overview PLC Analog Input Front-End Architectures PDF | HTML 2022年 7月 31日

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開發板

INA851EVM — 適用於低雜訊高速全差動儀器放大器的 INA851 評估模組

INA851EVM 評估模組 (EVM) 提供對 INA851 的功能存取，並可測量該裝置性能。INA851 是具有差分輸出的高精度儀表放大器，經過最佳化後可利用全差動輸入驅動高性能類比轉數位轉換器 (ADC)。

使用指南: PDF | HTML
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模擬型號

INA851 PSpice Model

SBOMC50.ZIP (101 KB) - PSpice Model
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模擬型號

INA851 TINA-TI Reference Design

SBOMC51.TSC (49 KB) - TINA-TI Reference Design
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INA851 TINA-TI Spice Model

SBOMC52.ZIP (16 KB) - TINA-TI Spice Model
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計算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

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INA851-INPUT-OUTPUT-RANGE-DESIGN-CALC — INA851 input and output range design calculator

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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。 

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
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TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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VQFN (RGT) 16 Ultra Librarian
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