型号OPA2691
品牌
分类高速运算放大器 (GBW ≥ 50MHz)
描述具有禁用功能的双路宽带电流反馈运算放大器
产品概述

参数

Architecture Current FB
Number of channels 2
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12
GBW (typ) (MHz) 280
BW at Acl (MHz) 280
Acl, min spec gain (V/V) 1
Slew rate (typ) (V/µs) 2100
Vn at flatband (typ) (nV√Hz) 1.7
Vn at 1 kHz (typ) (nV√Hz) 1.7
Iq per channel (typ) (mA) 5.1
Vos (offset voltage at 25°C) (max) (mV) 3
Rail-to-rail No
Features Shutdown
Rating Catalog
Operating temperature range (°C) -40 to 85
CMRR (typ) (dB) 56
Input bias current (max) (pA) 35000000
Offset drift (typ) (µV/°C) 20
Iout (typ) (mA) 190
2nd harmonic (dBc) 70
3rd harmonic (dBc) 74
Frequency of harmonic distortion measurement (MHz) 5

封装 | 引脚 | 尺寸

SOIC (D) 8 29.4 mm² 4.9 x 6
SOIC (D) 14 51.9 mm² 8.65 x 6

特性

  • FLEXIBLE SUPPLY RANGE:
    +5V to +12V Single Supply
    ±2.5V to ±6V Dual Supply
  • WIDEBAND +5V OPERATION: 190MHz (G =+2)
  • UNITY-GAIN STABLE: 280MHz (G =1)
  • HIGH OUTPUT CURRENT: 190mA
  • OUTPUT VOLTAGE SWING: ±4.0V
  • HIGH SLEW RATE: 2100V/µs
  • LOW SUPPLY CURRENT: 5.1mA/ch
  • LOW DISABLED CURRENT: 150 µA/ch
  • APPLICATIONS
    • xDSL LINE DRIVER/RECEIVER
    • MATCHED I/Q CHANNEL AMPLIFIER
    • BROADBAND VIDEO BUFFERS
    • HIGH-SPEED IMAGING CHANNELS
    • PORTABLE INSTRUMENTS
    • DIFFERENTIAL ADC DRIVERS
    • ACTIVE FILTERS
    • WIDEBAND INVERTING SUMMING

All trademarks are the property of their respective owners.

说明

The OPA2691 sets a new level of performance for broadband dual current-feedback op amps. Operating on a very low 5.1mA/ch supply current, the OPA2691 offers a slew rate and output power normally associated with a much higher supply current. A new output stage architecture delivers a high output current with minimal voltage headroom and crossover distortion. This gives exceptional single-supply operation. Using a single +5V supply, the OPA2691 can deliver a 1V to 4V output swing with over 150mA drive current and 190MHz bandwidth. This combination of features makes the OPA2691 an ideal RGB line driver or single-supply Analog-to-Digital Converter (ADC) input driver.

The OPA2691’s low 5.1mA/ch supply current is precisely trimmed at 25°C. This trim, along with low drift over temperature, ensures lower maximum supply current than competing products. System power may be further reduced by using the optional disable control pin (SO-14 only). Leaving this disable pin open, or holding it HIGH, gives normal operation. If pulled LOW, the OPA2691 supply current drops to less than 150 µA/ch while the output goes into a high impedance state. This feature may be used for power savings.