مبدل آنالوگ به دیجیتال ADS1211P با رزولوشن و دقت بالا از مبدل های آنالوگ به دیجیتال 24 بیتی دلتا-سیکما محسوب می شود و می تواند در رنح وسیعی از ورودی ها به کار رود و ورودی های تفاضلی سبب می شود تا سیگنال های سطح پایین قابل اندازه گیری باشد. معماری دلتا-سیکما در آی سی ADS1211P طیف دینامیکی گسترده ای را تحت پوشش قرار می دهد و رزولوشن 22 بیتی هیچ داده ای از سیگنال های ورودی را از دست نمی دهد و در فرکانس 100 هرتز به دقت 20 بیتی می رسد.
این مبدل آنالوگ به دیجیتال ADS1211P در بسته بندی 24 پایه و به صورت DIP عرضه می شود و در خود 4 مالتی پلکسر دارد.
مستندات:
دیتاشیت ADS1211P-ADC
Description:
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.
Application:
INDUSTRIAL PROCESS CONTROL
INSTRUMENTATION BLOOD ANALYSIS
SMART TRANSMITTERS
PORTABLE INSTRUMENTS
WEIGH SCALES
PRESSURE TRANSDUCERS
Features:
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
