PRESSEMITTEILUNGEN

(pressebox) Dallas, 15.10.2009,

Texas Instruments Incorporated (TI) (NYSE:TXN) introduced today a family of 16-, 14- and 12-bit simultaneous sampling successive approximation register (SAR) analog-to-digital converters (ADCs) with high-voltage inputs. The ADS8556, ADS8557 and ADS8558 offer a sampling range of 730 kSPS and signal-to-noise ratio (SNR) up to 91.5 dB, and include the industry’s only simultaneous sampling ADC that offers true, 16-bit no missing codes (NMC) performance. The new ADCs allow designers to maximize performance when connecting to a wide range of inputs or sensor types in applications including multi-axis motor control, simultaneous data acquisition, robotics, power quality management and power protection. For product details see: www.ti.com/ads8556-preu

Key features and benefits
- SNR of 91.5 db (typical) is up to 3.5 db better than the competition, for higher resolution of dynamic range signals; sampling rate of 730 kSPS per channel is more than twice that of the closest competitor
ADS8556 (16-bit) 91.5 SNR; 2x faster
ADS8557 (14- bit) 85 SNR; 2.5x faster
ADS8558 (12-bit) 73.9 SNR; ~3x faster

- True bipolar inputs with software-selectable input ranges up to ±12 V allow easy connectivity to a wide range of inputs and sensors
- Low power dissipation of 298.5 mW at maximum data rate; 150 mW at 250 kSPS
- Excellent performance and external conversion for multiple device synchronization, resulting in flexible and expandable systems
- The device’s performance is maximized when used with TI’s low-noise operational amplifiers: the low-noise, high-precision OPA827 featuring a FET input for high-impedance output sources; and the OPA211, TI’s low-power, lowest noise ±18-V op amp. These ADCs work well with many microcontrollers and embedded controllers, including TI’s TMS320F2812.

Availability and pricing

The ADS8556 is available today in an LQFP-64 package and is pin-compatible with the 14-bit ADS8557 and the 12-bit ADS8558. Pricing in 1,000-unit quantities is $15.95 (ADS8556), $10.95 (ADS8557) and $8.95 (ADS8558).

Find out more about TI’s high-performance ADCs by visiting the links below:
- Order ADS855x samples at www.ti.com/ads8556-preu
- Quickly search TI’s entire data converter portfolio or download the latest selection guide: www.ti.com/dataconverters-prde
- View TI Senior Application Engineer Bonnie Baker’s video "Analog Tutorial – The Basics of Effective Number of Bits" at www.ti.com/bitselection-pr
- Ask questions and share knowledge on TI’s E2E online community: http://www.ti.com/e2e-pr
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Adcs, Analog To Digital, Analog To Digital Converters, Bipolar Inputs, Expandable Systems, Ksps, Management Power, Maximum Data Rate, Motor Control Applications, Multi Axis, Operational Amplifiers, Power Dissipation, Power Quality Management, Sampling Rate, Signal To Noise Ratio, Simultaneous Data, Simultaneous Sampling, Texas Instruments Incorporated, Txn, Voltage Inputs