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AFE5805 Datasheet 8-CHANNEL ANALOG FRONT-END

Manufacturer: Texas Instruments

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General Description

The AFE5805 is a complete analog front-end device specifically designed for ultrasound systems that require low power and small size.

The AFE5805 consists of eight channels, including a low-noise amplifier (LNA), voltage-controlled attenuator (VCA), programmable gain amplifier (PGA), low-pass filter (LPF), and a 12-bit analog-to-digital converter (ADC) with low voltage differential signaling (LVDS) data outputs.

The LNA gain is set for 20dB gain, and has excellent noise and signal handling capabilities, including fast overload recovery.

Overview

AFE5805 www.ti.com SBOS421D – MARCH 2008 – REVISED MARCH 2010 FULLY-INTEGRATED, 8-CHANNEL ANALOG FRONT-END FOR ULTRASOUND 0.

Key Features

  • 1.
  • 23 8-Channel Complete Analog Front-End:.
  • LNA, VCA, PGA, LPF, and ADC.
  • Ultra-Low, Full-Channel Noise:.
  • 0.85nV/√Hz (TGC).
  • 1.1nV/√Hz (CW).
  • Low Power:.
  • 122mW/Channel (40MSPS).
  • 74mW/Channel (CW Mode).
  • Low-Noise Pre-Amp (LNA):.
  • 0.75nV/√Hz.
  • 20dB Fixed Gain.
  • 250mVPP Linear Input Range.
  • Variable-Gain Amplifier:.
  • Gain Control Range: 46dB.
  • PGA Gain Settings: 20dB, 25dB, 2.

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