Product Summary

The AFEM-7780 is an 8-channel analog front-end for ultrasound. It is specifically designed for ultrasound systems that requires low power and small size. The AFEM-7780 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 AFEM-7780 is used in Medical Imaging, Ultrasound, Portable Systems.

Parametrics

AFEM-7780 absolute maximum ratings: (1)Supply voltage range, AVDD1: -0.3 to +3.9 V; (2)Supply voltage range, AVDD2: –0.3 to +3.9 V; (3)Supply voltage range, AVDD_5V: –0.3 to +6 V; (4)Supply voltage range, DVDD: –0.3 to +3.9 V; (5)Supply voltage range, LVDD: –0.3 to +2.2 V; (6)Voltage between AVSS1 and LVSS: –0.3 to +0.3 V; (7)Voltage at analog inputs: –0.3 to AVDD2 +0.3 V; (8)Maximum junction temperature, TJ any condition: +150 ℃; (9)Maximum junction temperature, TJ continuous operation, long term reliability: +125 ℃; (10)Storage temperature range: –40 to +125 ℃; (11)Operating temperature range: –40 to +85 ℃.

Features

AFEM-7780 features: (1)8-Channel Complete Analog Front-End; (2)Ultra-Low Noise; (3)Low Power; (4)Low-Noise Pre-Amp (LNA); (5)Variable-Gain Amplifier; (6)PGA Gain Settings: 20dB, 25dB, 27dB, 30dB; (7)Low-Pass Filter; (8)Gain Error: ±0.5dB; (9)Channel Matching: ±0.8dB; (10)Distortion, HD2: –45dBc at 0.2VPP; (11)Clamping Control; (12)Fast Overload Recovery; (13)12-Bit Analog-to-Digital Converter; (14)Integrated CW Switch Matrix.

Diagrams

AFEM-7780 block diagram

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