ADS5231数据手册集成电路（IC）的模数转换器（ADC）规格书PDF

描述 Description

The ADS5231 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 ADS5231 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 ADS5231 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 printed circuit board (PCB). The ADS5231 employs digital error correction techniques to provide excellent differential linearity for demanding imaging applications. The ADS5231 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: 321mW External Reference: 285mW
• 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

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