型号OPA659
品牌
分类高速运算放大器 (GBW ≥ 50MHz)
描述650MHz 单位增益稳定 JFET 输入放大器
相关操作
产品概述

参数

Architecture FET / CMOS Input, Voltage FB
Number of channels 1
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 7
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 13
GBW (typ) (MHz) 650
BW at Acl (MHz) 650
Acl, min spec gain (V/V) 2
Slew rate (typ) (V/µs) 2550
Vn at flatband (typ) (nV√Hz) 8.9
Vn at 1 kHz (typ) (nV√Hz) 8.9
Iq per channel (typ) (mA) 30.5
Vos (offset voltage at 25°C) (max) (mV) 5
Rail-to-rail No
Rating Catalog
Operating temperature range (°C) -40 to 85
CMRR (typ) (dB) 70
Input bias current (max) (pA) 50
Offset drift (typ) (µV/°C) 10
Iout (typ) (mA) 70
2nd harmonic (dBc) 79
3rd harmonic (dBc) 100
Frequency of harmonic distortion measurement (MHz) 10

封装 | 引脚 | 尺寸

SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
VSON (DRB) 8 9 mm² 3 x 3

特性

  • High Bandwidth: 650 MHz (G = 1 V/V)
  • High Slew Rate: 2550 V/µs (4-V Step)
  • Excellent THD: –78 dBc at 10 MHz
  • Low Input Voltage Noise: 8.9 nV/√Hz
  • Fast Overdrive Recovery: 8 ns
  • Fast Settling time (1% 4-V Step): 8 ns
  • Low Input Offset Voltage: ±1 mV
  • Low Input Bias Current: ±10 pA
  • High Output Current: 70 mA

说明

The OPA659 combines a very wideband, unity-gain stable, voltage-feedback operational amplifier with a JFET-input stage to offer an ultra-high dynamic range amplifier for high impedance buffering in data acquisition applications such as oscilloscope front-end amplifiers and machine vision applications such as photodiode transimpedance amplifiers used in wafer inspection.

The wide 650-MHz unity-gain bandwidth is complemented by a very high 2550-V/µs slew rate.

The high input impedance and low bias current provided by the JFET input are supported by the low 8.9-nV/&radic:Hz input voltage noise to achieve a very low integrated noise in wideband photodiode transimpedance applications.

Broad transimpedance bandwidths are possible with the high 350-MHz gain bandwidth product of this device.

Where lower speed with lower quiescent current is required, consider the OPA656. Where unity-gain stability is not required, consider the OPA657.