型号OPA2890
品牌
分类高速运算放大器 (GBW ≥ 50MHz)
描述具有禁用功能的双通道 250MHz 低功耗宽带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 2
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12
GBW (typ) (MHz) 250
BW at Acl (MHz) 250
Acl, min spec gain (V/V) 1
Slew rate (typ) (V/µs) 400
Vn at flatband (typ) (nV√Hz) 8
Vn at 1 kHz (typ) (nV√Hz) 8
Iq per channel (typ) (mA) 1.1
Vos (offset voltage at 25°C) (max) (mV) 5
Rail-to-rail No
Features Shutdown
Rating Catalog
Operating temperature range (°C) -40 to 85
CMRR (typ) (dB) 68
Input bias current (max) (pA) 1600000
Offset drift (typ) (µV/°C) 35
Iout (typ) (mA) 40
2nd harmonic (dBc) 84
3rd harmonic (dBc) 89
Frequency of harmonic distortion measurement (MHz) 1

封装 | 引脚 | 尺寸

SOIC (D) 8 29.4 mm² 4.9 x 6
VSSOP (DGS) 10 14.7 mm² 3 x 4.9

特性

  • FLEXIBLE SUPPLY RANGE:
    +3V to +12V Single Supply
    ±1.5V to ±6V Dual Supplies
  • UNITY-GAIN STABLE
  • WIDEBAND +5V OPERATION: 90MHz
    (G = 2V/V)
  • OUTPUT VOLTAGE SWING: ±4.1V
  • HIGH SLEW RATE: 400V/µs
  • LOW QUIESCENT CURRENT: 1.1mA/ch
  • LOW DISABLE CURRENT: 30µA/ch
  • APPLICATIONS
    • VIDEO LINE DRIVING
    • xDSL LINE DRIVERS/RECEIVERS
    • HIGH-SPEED IMAGING CHANNELS
    • ADC BUFFERS
    • PORTABLE INSTRUMENTS
    • TRANSIMPEDANCE AMPLIFIERS
    • ACTIVE FILTERS

All other trademarks are the property of their respective owners

说明

The OPA2890 represents a major step forward in unity-gain stable, voltage-feedback op amps. A new internal architecture provides slew rate and full-power bandwidth previously found only in wideband, current-feedback op amps. These capabilities give exceptional single-supply operation. Using a single +5V supply, the OPA2890 can deliver a 0.9V to 4.1V output swing with over 30mA drive current and 210MHz bandwidth. This combination of features makes the OPA2890 an ideal RGB line driver or single-supply analog-to-digital converter (ADC) input driver.

The low 1.1mA/ch supply current of the OPA2890 is precisely trimmed at +25°C. This trim, along with low temperature drift, ensures lower maximum supply current than competing products. System power may be reduced further using the optional disable control pin (MSOP-10 package only). Leaving this disable pin open, or holding it high, operates the OPA2890 normally. If pulled low, the OPA2890 supply current drops to less than 30µA/ch while the output goes into a high-impedance state.