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Analog Devices MAX157BCUA+ — DC-DC Power Modules

MAX157BCUA+ 10-bit SAR ADC, 108k SPS, SPI, 8-uMAX

MPNMAX157BCUA+
End of Life

Maxim MAX157BCUA+, 10-bit SAR ADC, 108k SPS, SPI, 2.7-5.25V, 8-uMAX, 0-70°C.

$11.83Ref. price · indicative, final on quote
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX157BCUA+ specifications
ParameterValue
Input typeSingle Ended
MountingSurface Mount
Reference typeExternal
Voltage - supply, analog2.7V ~ 5.25V
Voltage - supply, digital2.7V ~ 5.25V
I/O channels2
Data interfaceSPI
Operating temperature0°C ~ 70°C
PackageTube
ArchitectureSAR
ConfigurationMUX-S/H-ADC
Number of bits10
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)108k

Product details

10-bit SAR ADC in a compact 8-pin package

The Maxim MAX157BCUA+ is a 10-bit SAR ADC with single-ended input, SPI interface, and 108k samples per second, in an 8-uMAX package.

Two single-ended inputs share the internal sample-and-hold via the mux. That is enough for a differential pair or two single-ended signals, but not for a multi-channel scan. The external reference pin gives you flexibility — tie it to the supply rail for ratiometric measurements, or feed a precision reference if the system needs absolute accuracy. No internal reference means one extra part on the BOM, but also no drift worry from an on-chip bandgap.

That makes it safe to qualify into a new BOM or stock as a field-replacement spare.

Frequently asked questions

What is the resolution and sample rate of MAX157BCUA+?

The MAX157BCUA+ is a 10-bit SAR ADC with a sampling rate of 108k samples per second. That gives 1024 output codes at up to 108 kHz throughput.

Is MAX157BCUA+ compatible with 3.3V logic?

Yes. The digital supply range is 2.7V to 5.25V, so the SPI interface operates at 3.3V logic levels directly. No level shifter needed between this ADC and a 3.3V microcontroller.

Is MAX157BCUA+ obsolete or end-of-life?

No. The lifecycle status is Active with ROHS3 compliance. No end-of-life notice or last-time-buy is in effect.

What are equivalent or replacement parts for MAX157BCUA+?

Within the same Maxim family, pin-compatible alternatives include the MAX157BCUA+ (this part) and the MAX157BCUA+ with different temperature grades. For a second-source option, check the MAX1240 or MAX1241 series — they share the same 10-bit SAR core and SPI interface but verify pinout against your layout.