ADS5231

www.DataSheet4U.com BurrĆBrown Products from Texas Instruments ADS5231 SBAS295A – JULY 2004 – REVISED JANUARY 2007 Dual, 12-Bit, 40MSPS, +3.3V Analog-to-Digital Converter 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 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 ...