MAX1247BEEE+

Analog To Digital Converters (ADC) Overview

The MAX1247BEEE+ is a 12-bit successive-approximation analog-to-digital converter (ADC) housed in a 16-pin QSOP package. It operates from a single +2.7V to +5.25V supply and features four software-configurable analog inputs supporting both single-ended and differential modes. The device utilizes a 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols. Key electrical specifications include a sampling rate of 133ksps, a signal-to-noise ratio of 70dB, and an integral nonlinearity of ±1 LSB. Supply current consumption is 1.2mA at full speed and drops to 1µA in power-down mode.

Analog To Digital Converters (ADC) Feature Summary

• Four-channel multiplexer with software-selectable unipolar or bipolar input configurations
• Integrated track/hold circuitry for high-bandwidth signal acquisition
• Flexible serial interface enabling direct connection to standard microprocessors without external logic
• Hardware shutdown pin and software-controlled power-down modes for optimized energy efficiency

Analog To Digital Converters (ADC) Applications

• Portable data logging systems
• Medical instrumentation
• Pen digitizers
• Battery-powered instruments
• Process control applications

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix BEEE against official manufacturer documentation to confirm the QSOP-16 package type and extended temperature range (-40°C to +85°C). Ensure the design accommodates the requirement for an external reference voltage, as this variant lacks the internal reference found in other family members. Confirm RoHS compliance status through the latest datasheet revision before finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select the MAX1247BEEE+ when an external reference voltage is required rather than an internal one. This component supports higher supply voltages up to 5.25V compared to the MAX1246 series. Engineers should account for the pseudo-differential input architecture during schematic design, ensuring stable common-mode voltages on the negative input channel to maintain specified accuracy levels.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MAX1246/MAX1247 family of low-power, serial 12-bit ADCs manufactured by Analog Devices / Maxim Integrated. The family shares identical core conversion architectures but differs in reference configuration and supply voltage ranges. The MAX1247 variant specifically requires an external reference source, distinguishing it from the internally referenced MAX1246 models within the same product line.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX1246BEEE+ serves as a functional substitute if an internal 2.5V reference is acceptable and the system operates within the +2.7V to +3.6V supply range. Verify that the replacement part number matches the QSOP-16 package and temperature grade requirements.