مبدل آنالوگ به دیجیتال ADS1211P

The ADS1210 and ADS1211 are precision, wide dynamic range, delta-sigma analog-to-digital converters with 24-bit resolution operating from a single +5V supply. The differential inputs are ideal for direct connection to transducers or low level voltage signals. The delta-sigma architecture is used for wide dynamic range and to guarantee 22 bits of no missing code performance. An effective resolution of 23 bits is achieved through the use of a very low-noise input amplifier at conversion rates to 10Hz. Effective resolutions of 20 bits can be maintained to a sample rate of 1kHz through the use of the unique Turbo modulator mode of operation. The dynamic range of the converters is further increased by providing a low-noise programmable gain amplifier with a gain range 16 in binary steps. The ADS1210 and ADS1211 are designed for high resolution measurement applications in smart transmitters, industrial process control, weigh scales, chromatography and portable instrumentation. Both converters include a flexible synchronous serial interface which is SPI compatible and also offers a two-wire control mode for low cost isolation. The is a single channel converter and is offered in both 18-pin DIP and 18-lead SOIC packages. The ADS1211 includes a 4 channel input multiplexer and is available in 24-pin DIP, 24-lead SOIC, and 28-lead SSOP packages.

INDUSTRIAL PROCESS CONTROL

INSTRUMENTATION BLOOD ANALYSIS

SMART TRANSMITTERS

PORTABLE INSTRUMENTS

WEIGH SCALES

PRESSURE TRANSDUCERS

DELTA-SIGMA A/D converter

23 bits effective resolution at 10Hz and 20 bits at 100HZ

Different inputs

programable gain amplifier

flexible SPI compatible

interface with 2-wire mode

programmable cut-off frequency up to 15.6khz

internal-external reference

on-chip self-calibration

4-channel MUX