AFE5804

AFE5804 www.ti.com SBOS442C – JUNE 2008 – REVISED OCTOBER 2011 FULLY-INTEGRATED, 8-CHANNEL ANALOG FRONT-END FOR ULTRASOUND 0.89nV/√Hz, 12-Bit, 40MSPS, 101mW/Channel Check for Samples: AFE5804 FEATURES 1 23 8-Channel Complete Analog Front-End: – LNA, VCA, PGA, LPF, and ADC Mode Control for Power/Noise Optimization: – Low Noise (Full-Channel): 0.89nV/√Hz (TGC Mode I) 1.23nV/√Hz (TGC Mode II) 1.03nV/√Hz (PW Mode) – Ultra-Low Power: 101mW/Channel (TGC Mode II) 65mW/Channel (CW Mode) Low-Noise Pre-Amp (LNA): – 0.75nV/√Hz – 20dB Fixed Gain – 280mVPP Linear Input Range Variable-Gain Amplifier: – Gain Control Range: 46dB PGA Gain Settings: 20dB, 25dB, 27dB, 30dB Low-Pass Filter: – Selectable BW: 12.5MHz, 17MHz – 2nd-Order, Bessel Gain Error: ±0.5dB Channel Matching: ±0.25dB Clamping Fast Overload Recovery: Two Clock Cycles 12-Bit Analog-to-Digital Converter: – 10MSPS to 50MSPS – 69dB SNR at 10MHz – Serial LVDS Interface Integrated CW Switch Matrix 15mm × 9mm, 135-BGA Package: – Pb-Free (RoHS-Compliant) and Green APPLICATIONS Medical Imaging, Ultrasound – Portable Systems – Battery-Powered Systems DESCRIPTION The AFE5804 is a complete analog front-end device specifically designed for ultrasound systems that require low power and small size. The AFE5804 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...