TI Announces High-Speed, Dual-Channel Data Converters for Communications and Medical Imaging
Devices Provide 12-bit, 50 and 32 Msps Operation for High-Performance, Multi-Channel Data Conversion
TUCSON, Ariz. (Mar. 7, 2001) --Texas Instruments Incorporated (TI) (NYSE: TXN) today announced a pair of dual-channel, 12-bit analog-to-digital converters (ADC) from the company's Burr-Brown product line. These high-performance data converters operate at 50Msps (ADS2807) and 32Msps (ADS2806) making them ideal for multi-channel communications and medical imaging applications such as base stations and ultrasound systems. See http://www.ti.com/sc/aap5917u.
"The ADS2806 and ADS2807 extend TI's family of high-performance, high-speed analog solutions by increasing our presence in applications which benefit from a dual-channel, high-speed ADC solution," said Ed Fullman, product marketing manager of Burr-Brown High-Speed Products from TI. "Furthermore, when combined with our existing high-speed driver op amps, TI can offer the customer a complete solution for undersampling and baseband applications."
The ADS2806 and ADS2807 include a high-bandwidth track-and-hold that gives excellent spurious performance up to and beyond the Nyquist rate. The differential nature of this track-and-hold and ADC circuitry minimizes even-order harmonics and gives excellent common-mode noise immunity. The ADS2806 features 66dB SNR (signal-to-noise ratio) and 73dB SFDR (spurious free dynamic range); the ADS2807 features 65dB SNR and 70dB SFDR.
Both converters allow for setting the full-scale range without any external reference circuitry. The internal reference can be disabled allowing low drive external references to be used for improved tracking in multi-channel systems. An over-range flag indicates when the input signal has exceeded the converter's full-scale range. This flag can also be used to reduce the gain of the front-end gain control circuitry. These devices provide dramatic flexibility by offering 2Vp-p and 3Vp-p input ranges and the ability to operate either differentially or single ended. Digital error correction techniques are employed to provide excellent differential linearity.
The ADS2806 and ADS2807 are designed to work with TI's high-performance TMS320C6000™ DSP platform, which is used in applications ranging from high-resolution medical imaging to third-generation wireless communications infrastructure.
Available Today
The ADS2806 and ADS2807 are available now and are packaged in a TQFP-64. The ADS2806 is priced from $14.95 in 1,000 piece quantities. The ADS2807 is priced from $21.95 in 1,000 piece quantities.
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