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Analog Devices MAX1243BESA+ — Analog & Data Acquisition
Analog Devices

MAX1243BESA+ ADC 10-Bit SAR 73k SPI 8-SOIC

MPNMAX1243BESA+
End of Life

Analog Devices MAX1243BESA+ 10-bit SAR ADC, 73k samples per second, single-ended input, SPI data interface, external reference, 8-SOIC package, industrial temperature range.

$11.73Ref. price · indicative, final on quote
Packaging8-SOIC (0.154", 3.90mm Width)
StockContact for availability
Lead timeIn Stock wk
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

MAX1243BESA+ Technical Specifications
ParameterValue
Input typeSingle Ended
Mounting typeSurface Mount
Reference typeExternal
Voltage - supply, analog2.7V ~ 5.25V
Voltage - supply, digital2.7V ~ 5.25V
Number of inputs1
InterfaceSPI
Operating temperature-40°C ~ 85°C
PackageTube
ArchitectureSAR
ConfigurationS/H-ADC
Number of bits10
Case8-SOIC (0.154\", 3.90mm Width)
Ratio - s (H:ADC)1:1
Number of a (D converters)1
Sampling rate (Per second)73k

Product details

73k samples/sec, 10-bit SAR ADC for single-channel sensor acquisition

The MAX1243BESA+ is a 10-bit successive-approximation-register (SAR) ADC from Analog Devices, sampling at 73k samples per second over an SPI serial interface. The single-ended input with a 1:1 S/H-to-ADC ratio means one analog channel is converted each conversion cycle — suited for applications where a single sensor voltage (0 V to Vref) is digitized and read by a microcontroller over a three-wire SPI bus. The external reference (not on-chip) sets the full-scale input range; the buyer must provide a stable reference voltage, typically 2.5 V or 4.096 V, depending on the sensor output span.

The part is RoHS3 compliant (lead-free) and ships in tubes.

Frequently asked questions

Where can I buy MAX1243BESA+ and how is it quoted?

The MAX1243BESA+ is sourced to order through independent distribution channels. No stock-holding claim is made — each order is quoted individually.

Does MAX1243BESA+ have an internal voltage reference?

No. The MAX1243BESA+ requires an external reference (Reference Type: External). The full-scale input range equals the reference voltage applied to the REF pin — typically 2.5 V or 4.096 V from a dedicated reference IC or a precision voltage source.

Is MAX1243BESA+ compatible with 3.3 V SPI?

Yes. The SCLK, CS, and DOUT pins are 3.3 V-compatible as long as the digital supply matches the microcontroller's I/O voltage.

What is the closest pin-compatible alternative to MAX1243BESA+?

Within the same Analog Devices MAX124x family, the MAX1240BESA+ is a 10-bit SAR ADC with the same 8-SOIC footprint and SPI interface but offers a higher sampling rate (100k samples/sec). The pinout is identical, so a BOM swap requires no board layout change — only a firmware update to the SPI timing if the higher rate is used.