TI Introduces Industry's Fastest 16-Bit Delta-Sigma Data Converter
3/17/2003 - Continuing to extend the performance and innovation in precision data conversion, Texas Instruments (TI) Incorporated (NYSE: TXN) introduced the industry´s fastest 16-bit delta-sigma analog-to-digital converter (ADC) from the company´s Burr-Brown product line. The ADS1605 features an industry-record 5MSPS (mega samples per second) data rate with outstanding high-speed performance: 88dB signal-to-noise ratio (SNR), -99dB total harmonic distortion (THD) and 101dB spurious-free dynamic range (SFDR).
The combination of high-speed and high-precision is ideal for demanding measurement requirements in scientific instrumentation, automated test equipment, data acquisition, medical imaging and vibration analysis.
"The ADS1605 is twice as fast as the nearest delta-sigma competition and has roughly a 10 to 15dB advantage in the key performance areas of SNR, THD and SFDR over competitive devices utilizing other architectures. And when measuring small input signals, it further outperforms the competition with unprecedented low-level THD and SFDR," said Jim Todsen, product line manager for TI's oversampling data converter products. "The ADS1605 is also the lowest priced solution within this performance segment."
The breakthrough speed and performance offered by the ADS1605 further illustrates TI´s leading data converter expertise and builds upon several recently released advanced data converters available from stock:
- ADS1605 - Industry´s fastest 16-bit delta-sigma converter (5MSPS)
- ADS8401 - Industry´s fastest 16-bit SAR converter (1.25 MSPS)
- ADS8383 - Industry´s first monolithic 18-bit SAR converter with no missing codes
ADS1605 Technical Information
The input signal is measured against a voltage reference that can be generated on-chip or supplied externally. The digital output data is provided over a simple parallel interface that directly connects to TI´s TMS320C6000TM DSP family. An out-of-range monitor reports when the input range has been exceeded.
The ADS1605 features a 2.45MHz input bandwidth (-3dB) and passband ripple less than +/-0.0025dB (to 2.2MHz). The device operates from a +5V analog supply and a +3V digital supply. The digital I/O supply operates from +2.7V 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 (315mW to 570mW). When not in use, the ADS1605 can be powered down with an I/O pin.
Available Today
The ADS1605 comes in a 64-lead TQFP package incorporating TI´s PowerPADTM technology, and is available now from TI and its authorized distributors. Suggested resale pricing starts at $32.05 in 1,000 piece quantities.
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