型号THS7001
品牌
分类可编程和可变增益放大器(PGA 和 VGA)
描述70MHz 高速可编程增益放大器
产品概述

参数

PGA/VGA VGA
Number of channels 1
BW at Acl (MHz) 100
Vs (max) (V) 32
Vs (min) (V) 9
Acl, min spec gain (V/V) 0.08
Gain (max) (dB) 20
Slew rate (typ) (V/µs) 85
Operating temperature range (°C) -40 to 85, 0 to 70
Features Digital Gain Set, Integrated Clamps, Shutdown
Rating Catalog

封装 | 引脚 | 尺寸

HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4

特性

  • Separate Low Noise Preamp and PGA Stages
  • Shutdown Control
  • Preamp Features
    • Low Voltage Noise...1.7 nV/Hz
    • Accessible Output Pin for External Filtering
    • Voltage Feedback, Gmin = -1, 2
    • 100 MHz Bandwidth (-3 dB)
  • PGA Features
    • Digitally Programmable Gain
    • -22 dB to 20 dB Gain/Attenuation Range
    • 6 dB Step Resolution
    • Output Clamp Protection
    • 70 MHz Bandwidth (-3 dB)
    • 175 V/µs Slew Rate
  • Wide Supply Range ±4.5 V to ±16 V
  • PowerPAD™ Package for Enhanced Thermal Performance

PowerPAD is a trademark of Texas Instruments Incorporated.

说明

The THS7001 (single) and THS7002 (dual) are high-speed programmable-gain amplifiers, ideal for applications where load impedance can often vary. Each channel on this device consists of a separate low-noise input preamp and a programmable gain amplifier (PGA). The preamp is a voltage-feedback amplifier offering a low 1.7-nV/Hz voltage noise with a 100-MHz (-3 dB) bandwidth. The output pin of the preamp is accessible so that filters can be easily added to the amplifier.

The 3-bit digitally-controlled PGA provides a -22-dB to 20-dB attenuation/gain range with a 6-dB step resolution. In addition, the PGA provides both high and low output clamp protection to prevent the output signal from swinging outside the common-mode input range of an analog-to-digital converter. The PGA provides a wide 70-MHz (-3 dB) bandwidth, which remains relatively constant over the entire gain/attenuation range. Independent shutdown control is also provided for power conservation and multiplexing. These devices operate over a wide ±4.5-V to ±16-V supply voltage range.