MAX2078中文資料美信數(shù)據(jù)手冊(cè)PDF規(guī)格書

General Description

The MAX2078 octal-channel ultrasound front-end is a fully integrated bipolar, high-density octal-channel ultra sound receiver optimized for low cost, high-channel count, high-performance portable and cart-based ultra sound systems. The easy-to-use IC allows the user to achieve high-end 2D, PW, and CW Doppler (CWD) imaging capability using substantially less space and power. The highly compact imaging receiver lineup, including low-noise amplifier (LNA), variable-gain amplifier (VGA), and anti-alias filter (AAF), achieves an ultra-low 2.4dB noise figure at RS = RIN = 200Ω at a very low 64.8mW per channel power dissipation. The full imaging receiver channel has been optimized for second-harmonic imaging with -64dBFS second-harmonic distortion performance with a 1VP-P 5MHz output signal. The bipolar front-end has also been optimized for excellent low-velocity PW and color-flow Doppler sensitivity with an exceptional near-carrier SNR of 140dBc/Hz at 1kHz offset from a 5MHz 1VP-P output clutter signal.

Features

? 8 Full Channels of LNA, VGA, AAF, and CWD

?? Mixers in a Small, 10mm x 10mm TQFN Package

? Pin Compatible with MAX2077 with LNA, VGA,

?? and AAF in 10mm x 10mm TQFN Variant

? Ultra-Low Full-Channel Noise Figure of 2.4dB at

?? RIN = RS = 200Ω

? Low Output-Referred Noise of 23nV/√Hz at 5MHz,

?? 20dB Gain, Yielding a Broadband SNR of 68dB**

?? for Excellent Second-Harmonic Imaging

? High Near-Carrier SNR of 140dBc/Hz at 1kHz

?? Offset from a 5MHz, 1VP-P Output Signal, and

?? 20dB of Gain for Excellent Low-Velocity PW and

?? Color-Flow Doppler Sensitivity in a High-Clutter

?? Environment

? Ultra-Low-Power 64.8mW per Full-Channel (LNA,

?? VGA, and AAF) Normal Imaging Mode (234mW per

?? Channel in CWD Mode)

? Selectable Active Input-Impedance Matching of

?? 50Ω, 100Ω, 200Ω, and 1kΩ

? Wide Input-Voltage Range of 330mVP-P in High LNA

?? Gain Mode and 550mVP-P in Low LNA Gain Mode

? Integrated Selectable 3-Pole 9MHz, 10MHz,

?? 15MHz, and 18MHz Butterworth AAF

? Fast-Recovery, Low-Power Modes (< 2μs)

? Fully Integrated, High Dynamic Range CWD

?? Beamformer with Near-Carrier SNR of 154dBc/Hz

?? at 1kHz Offset from a 1.25MHz, 200mVP-P Input

?? Clutter Signal

Applications

?? Medical Ultrasound Imaging

?? Sonar