描述 Description

The ADS5232 is a dual, high-speed, high dynamic range, 12-bit pipelined analog-to-digital converter (ADC). This converter includes a high-bandwidth sample-and-hold amplifier that gives excellent spurious performance up to and beyond the Nyquist rate. The differential nature of the sample-and-hold amplifier and ADC circuitry minimizes even-order harmonics and gives excellent common-mode noise immunity. The ADS5232 provides for setting the full-scale range of the converter without any external reference circuitry. The internal reference can be disabled, allowing low-drive, external references to be used for improved tracking in multichannel systems. The ADS5232 provides an over-range indicator flag to indicate an input signal that exceeds the full-scale input range of the converter. This flag can be used to reduce the gain of front-end gain control circuitry. There is also an output enable pin to allow for multiplexing and testing on a PC board. The ADS5232 employs digital error correction techniques to provide excellent differential linearity for demanding imaging applications. The ADS5232 is available in a TQFP-64 package.

特性 Features

? Single +3.3V Supply
? High SNR: 70.7dBFS at fIN = 5MHz
? Total Power Dissipation:Internal Reference: 371mWExternal Reference: 335mW
? Internal or External Reference
? Low DNL: ±0.3LSB
? Flexible Input Range: 1.5VPP to 2VPP
? TQFP-64 Package
? APPLICATIONS
? Communications IF Processing
? Communications Base Stations
? Test Equipment
? Medical Imaging
? Video Digitizing
? CCD Digitizing