Datasheet Analog Devices AD7124-4

4-Channel, Low Noise, Low Power, 24-Bit,
Sigma-Delta ADC with PGA and Reference
AD7124-4 Data Sheet
FEATURES Low-side power switch
General-purpose outputs
Multiple filter options
Internal temperature sensor
Self and system calibration
Sensor burnout detection
Automatic channel sequencer
Per channel configuration
Power supply: 2.7 V to 3.6 V and ±1.8 V
Independent interface power supply
Power-down current: 5 µA maximum
Temperature range: −40°C to +125°C
32-lead LFCSP/24-lead TSSOP
3-wire or 4-wire serial interface
SPI, QSPI, MICROWIRE, and DSP compatible
Schmitt trigger on SCLK
ESD: 4 kV 3 power modes
RMS noise
Low power: 24 nV rms at 1.17 SPS, gain = 128 (255 µA typical)
Mid power: 20 nV rms at 2.34 SPS, gain = 128 (355 µA typical) …

4-Channel, Low Noise, Low Power, 24-Bit,
Sigma-Delta ADC with PGA and Reference
AD7124-4-EP Enhanced Product
FEATURES Multiple filter options
Sensor burnout detection
Automatic channel sequencer
Per channel configuration
Power-down current: 5 μA maximum
24-lead TSSOP
3-wire or 4-wire serial interface
SPI, QSPI, MICROWIRE, and DSP compatible
Schmitt trigger on SCLK 3 power modes
RMS noise
Low power: 24 nV rms at 1.17 SPS, gain = 128 (255 μA typical)
Mid power: 20 nV rms at 2.34 SPS, gain = 128 (355 μA typical)
Full power: 23 nV rms at 9.4 SPS, gain = 128 (930 μA typical)
Up to 22 noise free bits in all power modes (gain = 1)
Output data rate
Full power: 9.38 SPS to 19,200 SPS
Mid power: 2.34 SPS to 4800 SPS
Low power: 1.17 SPS to 2400 SPS
Rail-to-rail analog inputs for gains > 1
Simultaneous 50 Hz/60 Hz rejection at 25 SPS (single cycle …