型号OPA843
品牌
分类高速运算放大器 (GBW ≥ 50MHz)
描述宽带、低失真、中增益、电压反馈运算放大器
相关操作
产品概述

参数

Architecture Voltage FB
Number of channels 1
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 8
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12
GBW (typ) (MHz) 800
BW at Acl (MHz) 500
Acl, min spec gain (V/V) 3
Slew rate (typ) (V/µs) 1000
Vn at flatband (typ) (nV√Hz) 2
Vn at 1 kHz (typ) (nV√Hz) 2
Iq per channel (typ) (mA) 20.2
Vos (offset voltage at 25°C) (max) (mV) 1.2
Rail-to-rail No
Features Decompensated
Rating Catalog
Operating temperature range (°C) -40 to 85
CMRR (typ) (dB) 95
Input bias current (max) (pA) 35000000
Offset drift (typ) (µV/°C) 4
Iout (typ) (mA) 100
2nd harmonic (dBc) 76
3rd harmonic (dBc) 102
Frequency of harmonic distortion measurement (MHz) 5

封装 | 引脚 | 尺寸

SOIC (D) 8 29.4 mm² 4.9 x 6
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8

特性

  • HIGH BANDWIDTH: 260MHz (G = +5)
  • GAIN BANDWIDTH PRODUCT: 800MHz
  • LOW INPUT VOLTAGE NOISE: 2.0nV/√Hz
  • VERY LOW DISTORTION: –96dBc (5MHz)
  • HIGH OPEN-LOOP GAIN: 110dB
  • FAST 12-BIT SETTLING: 10.5ns (0.01%)
  • LOW INPUT OFFSET VOLTAGE: 300µV
  • OUTPUT CURRENT: ±100mA
  • APPLICATIONS
    • ADC/DAC BUFFER AMPLIFIER
    • LOW DISTORTION "IF" AMPLIFIER
    • ACTIVE FILTERS
    • LOW-NOISE RECEIVER
    • WIDEBAND TRANSIMPEDANCE
    • TEST INSTRUMENTATION
    • PROFESSIONAL AUDIO
    • OPA643 UPGRADE

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说明

The OPA843 provides a level of speed and dynamic range previously unattainable in a monolithic op amp. Using a high Gain Bandwidth (GBW), two gain-stage design, the OPA843 gives a medium gain range device with exceptional dynamic range. The "classic" differential input complements this high dynamic range with DC precision beyond most high-speed amplifier products. Very low input offset voltage and current, high Common-Mode Rejection Ratio (CMRR) and Power-Supply Rejection Ratio (PSRR), and high open-loop gain combine to give a high DC precision amplifier along with low noise and high 3rd-order intercept.

12- to 16-bit converter interfaces will benefit from this combination of features. High-speed transimpedance applications can be implemented with exceptional DC precision as well. Differential configurations using two OPA843s can deliver very low distortion to high output voltages, as shown below.