ADS1601

www.DataSheet4U.com ADS1601 SBAS322 − DECEMBER 2004 16ĆBit, 1.25MSPS AnalogĆtoĆDigital Converter FEATURES D High Speed: D Data Rate: 1.25MSPS Bandwidth: 615kHz Outstanding Performance: SNR: 92dB at fIN = 100kHz, −1dBFS THD: −103dB at fIN = 100kHz, −6dBFS SFDR: 105dB at fIN = 100kHz, −6dBFS Ease-of-Use: High-Speed 3-Wire Serial Interface Directly Connects to TMS320 DSPs On-Chip Digital Filter Simplifies Anti-Alias Requirements Simple Pin-Driven Control—No On-Chip Registers to Program Selectable On-Chip Voltage Reference Simultaneous Sampling with Multiple ADS1601s Low Power: 330mW at 1.25MSPS 145mW at 625kSPS Power-Down Mode DESCRIPTION The ADS1601 is a high-speed, high-precision, delta-sigma analog-to-digital converter (ADC) manufactured on an advanced CMOS process. The ADS1601 oversampling topology reduces clock jitter sensitivity during the sampling of high-frequency, large amplitude signals by a factor of four over that achieved by Nyquist-rate ADCs. Consequently, signal-to-noise ratio (SNR) is particularly improved. Total harmonic distortion (THD) is −103dB, and the spurious-free dynamic range (SFDR) is 105dB. Optimized for power and performance, the ADS1601 dissipates only 330mW while providing a full-scale differential input range of ±3V. Having such a wide input range makes out-of-range signals unlikely. The OTR pin indicates if an analog input out-of-range condition does occur. The differential input signal is measured against the differential reference, which can...