Build with AD7124-8 — Datasheet Specs & AI Design Help

00 — Overview

What the AD7124-8 does

The AD7124-8 is an 8-channel, low noise, low power, 24-bit sigma-delta ADC featuring a programmable gain amplifier and internal reference. It supports 8 differential or 15 pseudo-differential inputs with programmable gain from 1 to 128. The device operates across a 2.7 V to 3.6 V single supply or ±1.8 V dual supply, delivering up to 22 noise-free bits. It offers three power modes ranging from 24 nV rms noise at 1.17 SPS to 23 nV rms at 9.4 SPS with a maximum power-down current of 5 µA. The ADC includes a band gap reference with 10 ppm/°C drift, an internal temperature sensor, and diagnostic functions for safe integrity level certification. It is designed for temperature and pressure measurement, industrial process control, instrumentation, and smart transmitter applications. The part is available in commercial, industrial, and automotive grades with a temperature range of −40°C to +125°C.

Next step

Start building with AD7124-8 → Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.

01 — Key specifications

Datasheet parameters

Datasheet parameters for AD7124-8
Parameter	Min	Typ	Max	Conditions	Source
output current	—	—	10 mA	Drift	ADI datasheet, p. 7 — Table 3. (Continued)
cmrr	85 dB	90 dB	—	AIN = 1 V, gain = 1; common; Common-Mode Rejection8	ADI datasheet, p. 5 — Table 3.
operating temperature	-40 °C	—	125 °C		ADI datasheet, p. 94 — ORDERING GUIDE
clock frequency	—	614 kHz	—	Internal Clock	ADI datasheet, p. 8 — Table 3. (Continued)
standby current	—	8 µA	20 µA	Standby Current	ADI datasheet, p. 10 — Table 3. (Continued)
psrr	—	85 dB	—	Drift	ADI datasheet, p. 7 — Table 3. (Continued)
adc resolution	—	24 bit	—		ADI datasheet, p. 4
sample rate	9.38 Hz	—	19.2 kHz	Output Data Rate, fADC	ADI datasheet, p. 5 — Table 3.
settling time	—	400 ms	—	Sinc4 filter, full power mode, 10 SPS, fCLK = 614.4 kHz	ADI datasheet, p. 55 — Table 56. Examples of Output Data Rates and the Corresponding Settling T…
channel count	—	8	—	8 differential or 15 pseudo differential inputs	ADI datasheet, p. 4

02 — Alternatives

Closest matches to AD7124-8

ADS1220 8.0× lower settling time, 6.7× higher clock frequency, 6.4× lower supply voltage range

ADS1246 9.9× higher supply voltage range, 4.5× higher clock frequency, 1.7× higher sample rate

CS5530-IS 9.4× higher supply voltage range, 8.0× higher clock frequency, 3.2× higher sample rate

HX711 18.0× higher clock frequency, 10.1× higher supply voltage range, 1.9× lower operating temperature

MCP3421 12.3× lower clock frequency, 10.2× higher supply voltage range, 5.0× lower sample rate

AD7606 12.5× higher supply voltage range, 2.0× lower input capacitance, 1.9× lower operating temperature

ADS131M02 13.3× higher clock frequency, 7.9× higher supply voltage range, 1.1× lower psrr

ADS131M02IPWR 13.3× higher clock frequency, 7.9× higher supply voltage range, 1.1× lower psrr

03 — FAQ

Frequently asked questions

What is the ADC resolution of the AD7124-8BBCPZ?

The ADC resolution is 24 bit.

What is the channel count for the AD7124-8BBCPZ?

The channel count is 8, supporting 8 differential or 15 pseudo differential inputs.

What is the clock frequency when using the Internal Clock?

The clock frequency is 614 kHz.

What is the common-mode rejection ratio (CMRR) when AIN = 1 V and gain = 1?

The common-mode rejection ratio is 90 dB.

What is the maximum operating temperature for the AD7124-8BBCPZ?

The maximum operating temperature is 125 °C.

What is the output current drift?

The output current drift is 10 mA.

What is the PSRR drift specification for the AD7124-8BBCPZ?

The PSRR drift is 85 dB.

What is the Output Data Rate, fADC?

The Output Data Rate, fADC, is 19.2 kHz.

What is the settling time for the AD7124-8BBCPZ when using the Sinc4 filter in full power mode at 10 SPS with fCLK = 614.4 kHz?

The settling time is 400 ms.

What is the standby current?

The standby current is 8 µA.