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16-bit 200ksps multichannel A/D converter draws one-third power of competitors

Milpitas, CA — June 1, 2004 — Linear Technology Corporation introduces the LTC1867, a 16-bit, 8-channel, 200ksps analog to digital converter (ADC) offering low power without compromising speed or linearity. The LTC1867 draws only 1.3mA at full speed – roughly one-third the power of competing devices. The supply current automatically drops at reduced speeds, typically to 750μA at 100ksps and 200μA at 10ksps. This device maintains excellent DC performance, offering 16-bit no missing codes over temperature and ±2 LSB(max) INL. The LTC1867 is ideal for low power applications such as portable instrumentation, industrial process control and medical applications.

The LTC1867 offers an easy to use multiplexer and serial interface. The multiplexer allows any combination of single-ended inputs or differential inputs in either unipolar (0V to 4.096V) mode or bipolar (±2.048V) mode. The accuracy of the ADC is independent of the shift clock frequency, allowing these parts to operate in opto-isolation or very low power applications.

The LTC1867 also comes in a 12-bit version, the LTC1863. Both are available in SSOP-16 packages offering a pin compatible family for performance/cost optimization in end products. The LTC1867 and LTC1863 are available in the commercial and industrial temperature ranges.

Summary of Features: LTC1863 & LTC1867
* 12-bit (LTC1863) & 16-bit (LTC1867) No Missing Codes Resolution
* 8 Swipe ended or 4 differential input channels
* LTC1867: ±2 LSB(max) INL, 89dB SNR
* LTC1863: ±1 LSB(max) INL, 73dB SNR
* Single 5V Supply
* On-Board 2.5V Reference
* Low Supply Current: 1.3mA (Typ) at 200ksps
* Autoshutdown Reduces Supply Current to 750μA at 100ksps and 200μA at 10ksps
* SPI/MICROWIRE Compatible Serial I/O
* Pin Compatible SSOP-16 Package

Pricing begins at $7.75 each for the LTC1867 and $3.85 each for the LTC1863 in 1,000-piece quantities.

For more information: Tel: 1-800-4-LINEAR (for literature only), or go to the company's web site:www.linear.com

Datasheet
LTC1867 data sheet

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