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Analog Devices AD7684BRMZ — Analog & Data Acquisition

AD7684BRMZ 16-Bit SAR ADC, 100kSPS, 8-MSOP

MPNAD7684BRMZ
End of Life

ADI, PulSAR® series, 16-bit SAR ADC, single differential input, 100kSPS, SPI/DSP interface, 2.7V to 5.5V supply, 8-MSOP package, -40°C to 85°C, Tube.

$17.82Ref. price · indicative, final on quote
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
RoHSROHS3 Compliant
SeriesPulSAR®
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

AD7684BRMZ specifications
ParameterValue
SeriesPulSAR®
Input typeDifferential
MountingSurface Mount
Reference typeExternal
Voltage - supply, analog2.7V ~ 5.5V
Voltage - supply, digital2.7V ~ 5.5V
I/O channels1
Data interfaceSPI, DSP
Operating temperature-40°C ~ 85°C
PackageTube
ArchitectureSAR
ConfigurationS/H-ADC
Number of bits16
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)
Ratio - s (H:ADC)1:1
Number of a (D converters)1
Sampling rate (Per second)100k

Product details

16-bit SAR ADC in a compact 8-MSOP

The AD7684BRMZ is a 16-bit SAR ADC from the PulSAR® series. It samples a single differential input at 100k samples per second via an SPI/DSP interface.

SAR architecture — deterministic, no pipeline

The SAR conversion core produces one 16-bit result per conversion request with no pipeline delay. That matters for multiplexed front-ends or single-shot acquisition where every sample must correspond to a known instant in time. The 1:1 S/H-to-ADC ratio means the sample-and-hold acquires the input voltage once per conversion cycle, then the SAR engine resolves bits sequentially.

Active lifecycle, no end-of-life concern

Frequently asked questions

Is AD7684BRMZ compatible with 3.3V SPI?

Yes. With VDD set to 3.3V, the digital interface levels are 3.3V-compatible, matching standard 3.3V SPI and DSP controllers without external level translation.

When sourcing AD7684BRMZ, what is the closest functional alternative — AD7683BRMZ?

The AD7683BRMZ is a 16-bit PulSAR ADC in the same 8-MSOP package and 100kSPS sampling rate, but its input is pseudo-differential rather than true differential. The AD7684BRMZ's true differential input provides better common-mode rejection for applications where the signal and reference share a common-mode voltage. For single-ended or pseudo-differential signals the AD7683BRMZ may fit, but the input architecture difference affects the front-end design.