MAX2038CCQ+TD中文資料美信數(shù)據(jù)手冊PDF規(guī)格書

General Description

The MAX2038 8-channel variable-gain amplifier (VGA) and programmable octal mixer array is designed for high linearity, high dynamic range, and low noise performance targeting ultrasound imaging and Doppler applications. Each amplifier features differential inputs and outputs and a total gain range of 42dB (typ). In addition, the VGAs offer very low output-referred noise performance suitable for interfacing with 12-bit ADCs.

Features

? 8-Channel Configuration

? High Integration for Ultrasound Imaging

?? Applications

? Pin Compatible with the MAX2037 Ultrasound VGA

VGA Features

? Maximum Gain, Gain Range, and Output-Referred

?? Noise Optimized for Interfacing with 12-Bit ADCs

?? Maximum Gain of 29.5dB

?? Total Gain Range of 42dB

?? 22nV/√Hz Ultra-Low Output-Referred Noise at

?? 5MHz

? ±0.25dB Absolute Gain Error

? 120mW Consumption per Channel

? Switchable Output VGA Clamp Eliminating ADC

?? Overdrive

? Fully Differential VGA Outputs for Direct ADC

?? Drive

? Variable Gain Range Achieves 42dB Dynamic

?? Range

? -70dBc HD2 at VOUT = 1.5VP-P and fIN = 5MHz

? Two-Tone Ultrasound-Specific* IMD3 of

?? -52dBc at VOUT = 1.5VP-P and fIN = 5MHz

CW Doppler Mixer Features

? Low Mixer Noise of -155dBc/Hz at 1kHz Offset

?? from 1.25MHz Carrier

? Serial-Programmable LO Phase Generator for 4, 8,

?? 16 LO Quadrature Phase Resolution

? Optional Individual Channel 4 x fLO LO Input

?? Drive Capability

? 269mW Power Consumption per Channel (Normal

?? Power Mode) and 226mW Power Consumption

?? per Channel (Low-Power Mode)

Applications

?? Ultrasound Imaging

?? Sonar