data converters

AD7798

Full part number: AD7798BRUZ

Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.

00 — Overview

What the AD7798 does

The AD7798/AD7799 are low power, low noise, complete analog front ends featuring a 16-/24-bit Σ-Δ ADC with three differential inputs and an on-chip instrumentation amplifier. These devices operate with a single supply of 2.7 V to 5.25 V, consuming 300 µA typical for the AD7798 and 380 µA typical for the AD7799. With an update rate ranging from 4.17 Hz to 470 Hz, the AD7799 achieves 27 nV RMS noise at 4.17 Hz, while the AD7798 reaches 40 nV. The parts include simultaneous 50 Hz/60 Hz rejection and an internal clock oscillator. Engineers typically use them for weigh scales, pressure measurement, strain gauge transducers, gas analysis, and industrial process control. Both variants are available in a 16-lead TSSOP package.

Next step
Start building with AD7798 → 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 AD7798
ParameterMinTypMaxConditionsSource
supply voltage range 2.7 V — 5.25 V ADI datasheet, p. 5
operating temperature -40 °C — 105 °C ADI datasheet, p. 27 — ORDERING GUIDE
adc resolution — 16 bit — ADI datasheet, p. 3 — Table 1.
sample rate 4.17 Hz — 470 Hz ADI datasheet, p. 3 — Table 1.
settling time 4 ms — 480 ms ADI datasheet, p. 15 — Table 14. Update Rates Available
02 — Alternatives

Closest matches to AD7798

CS1238 2.7× higher sample rate, 1.6× lower settling time, 1.5× higher adc resolution
HX711 1.7× higher settling time, 1.5× higher adc resolution, 1.4× lower operating temperature
MCP3421 1.4× lower operating temperature, 1.1× higher adc resolution, 1.1× higher settling time
HX712 1.7× higher settling time, 1.5× higher adc resolution, 1.4× lower operating temperature
MCP3002 1.6× lower adc resolution, 1.4× lower operating temperature, 1.2× lower sample rate
AD7190BRUZ 10.1× higher sample rate, 3.5× higher settling time, 1.5× higher adc resolution
AD7682BCBZ-RL7 1.4× lower operating temperature, similar supply voltage range, similar adc resolution
ADS1110A0IDBVR 3.6× lower settling time, 1.4× lower operating temperature, similar supply voltage range
03 — FAQ

Frequently asked questions

What is the ADC resolution of the AD7798BRUZ?

The ADC resolution is 16 bit.

What is the maximum operating temperature for the AD7798BRUZ?

The maximum operating temperature is 105 °C.

What is the sample rate of the AD7798BRUZ?

The sample rate is 470 Hz.

What is the settling time of the AD7798BRUZ?

The settling time is 480 ms.

What is the maximum supply voltage for the AD7798BRUZ?

The maximum supply voltage is 5.25 V.

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