Product category: Analogue and Mixed Signal ICs
News Release from: Texas Instruments (April 2001-March 2006) | Subject: ADS1625
Edited by the Electronicstalk Editorial Team on 11 July 2003
Top speed for delta-sigma A/D convertor
Featuring a 1.25Msample/s datarate with outstanding high-speed performance, the ADS1625 is ideal for demanding measurement requirements
Featuring a 1.25Msample/s datarate with outstanding high-speed performance, the ADS1625 is ideal for demanding measurement requirements in scientific instrumentation, automated test equipment, data acquisition and medical imaging. 'The unmatched combination of resolution, speed and noise performance provides instrumentation designers with a superior solution for upgrading their current and next-generation designs', said Rich Wegner, Strategic Marketing Manager for TI's oversampling data convertor products.
This article was originally published on Electronicstalk on 11 July 2003 at 8.00am (UK)
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The ADS1625 features 93dB signal-to-noise ratio (SNR), -101dB total harmonic distortion (THD) and 103dB spurious-free dynamic range (SFDR).
Input bandwidth is 615kHz (-3dB) and passband ripple is less than +/-0.0025dB (to 550kHz).
The input signal is measured against a voltage reference that can be generated on-chip or supplied externally.
The digital output data are provided over a simple parallel interface that directly connects to TI's TMS320C6000T DSP family.
An out-of-range monitor reports when the input range has been exceeded.
The device operates from a +5V analogue supply and a +3V digital supply.
The digital I/O supply operates from +2.7 to +5.25V, enabling the digital interface to support a range of logic families.
Power dissipation is set by an external resistor and can be reduced when operating at slower speeds (150 to 515mW).
A power-down mode, activated by a digital pin, shuts down all circuitry.
The ADS1625 is pin compatible with TI's previously introduced ADS1605 (16bit, 5Msample/s ADC) to provide an easy upgrade path.
The ADS1625 comes in a 64-lead TQFP package incorporating TI's PowerPAD technology, and is available now from TI and its authorised distributors.
The ADS1625 is priced from $37.90 in 1000 piece quantities (suggested resale pricing).
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