Описание ADS1220IPW
The ADS1220IPW is a precision, 24-bit Analogue-to-digital Converter (ADC) IC, offers many integrated features to reduce system cost and component count in applications measuring small sensor signals. The device features two differential or four single-ended inputs through a flexible input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), two programmable excitation current sources, a voltage reference, an oscillator, a low-side switch and a precision temperature sensor. The device can perform conversions at data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At 20 SPS, the digital filter offers simultaneous 50 and 60Hz rejection for noisy industrial applications. The device supports measurements of pseudo- or fully-differential signals when using the PGA.
• Low Current Consumption
• 1 to 128V/V Programmable Gain
• Up to 2kSPS Programmable Data Rate
• Up to 20-bit Effective Resolution
• Simultaneous 50 and 60Hz Rejection at 20 SPS with Single-Cycle Settling Digital Filter
• Two Differential or Four Single-ended Inputs
• 10µA to 1.5mA Dual-matched Programmable Current Sources
• 5ppm/°C (Typical) Drift Internal 2.048V Reference
• Internal 2% Accurate Oscillator
• 0.5°C (Typical) Accuracy Internal Temperature Sensor
• SPI™-compatible Interface (Mode 1)
• Green Product, No Sb/Br
| Архитектура | ацп сигма-дельта(sigma-delta) |
| Разрешение (Бит) | 24 |
| Частота дискретизации (выб/сек.) | 2k |
| Количество A/D конвертеров | 1 |
| Количество входных каналов | 4 |
| Тип входа | дифференциальный, с общей землей |
| Интерфейс данных | spi |
| Напряжение питания: аналоговое / цифровое | 2.3…5.5 в, ±2.5 в/2.3…5.5 в |
| Рабочая температура,°С | -40…+125 |
| Корпус | tssop-16 (0.173 inch) |
| Вес, г | 0.4 |