Datasheet Analog Devices AD7172-4BCPZ — 数据表

Low Power, 24-Bit, 31.25 kSPS, Sigma-Delta
ADC with True Rail-to-Rail Buffers
AD7172-4 Data Sheet
FEATURES GENERAL DESCRIPTION Fast and flexible output rate: 1.25 SPS to 31.25 kSPS
Channel scan data rate of 6.21 kSPS/channel (161 μs settling)
Performance specifications
17.2 noise free bits at 31.25 kSPS
24 noise free bits at 5 SPS
INL: ±2 ppm of FSR
85 dB rejection of 50 Hz and 60 Hz with 50 ms settling
User configurable input channels
4 fully differential channels or 8 single-ended channels
Crosspoint multiplexer
True rail-to-rail analog and reference input buffers
Internal or external clock
Power supply
AVDD1 = 3.0 V to 5.5 V, AVDD2 = IOVDD = 2 V to 5.5 V
Split supply with AVDD1 and AVSS at ±2.5 V or ±1.65 V
ADC current: 1.5 mA
Temperature range: −40°C to +105°C
3-or 4-wire serial digital interface (Schmitt trigger on SCLK)
Serial port interface (SPI), QSPI-, MICROWIRE-, and DSPcompatible The AD7172-4 is a low noise, low power, multiplexed, Σ-Δ analogto-digital converter (ADC) with 4-or 8-channel (fully differential/
single-ended) inputs for low bandwidth signals. The AD7172-4 …