MAX1271BEAI

ADCs/DACs - Special Purpose Overview

The MAX1271BEAI+ is a multirange, 12-bit data acquisition system (DAS) requiring a single +5V supply. It features eight analog input channels independently programmable for ranges including ±VREF, ±VREF/2, 0 to VREF, and 0 to VREF/2. The device offers 110ksps throughput with a 5MHz bandwidth track/hold. It includes an internal 4.096V reference or supports external references. The serial interface connects directly to SPI/QSPI/MICROWIRE devices. It provides ±16.5V overvoltage tolerance on inputs and two power-down modes.

ADCs/DACs - Special Purpose Feature Summary

• 12-Bit Resolution with 0.5 LSB Integral Nonlinearity
• +5V Single-Supply Operation with ±16.5V Overvoltage-Tolerant Inputs
• Eight Analog Input Channels with Software-Selectable Ranges
• SPI/QSPI and MICROWIRE-Compatible 3-Wire Interface

ADCs/DACs - Special Purpose Applications

• Industrial Control Systems
• Data-Acquisition Systems
• Automatic Testing Equipment
• Medical Instruments

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'E' indicates the -40°C to +85°C industrial temperature range compared to the 'C' variant (0°C to +70°C). Confirm package type matches requirements, as the BEAI designation corresponds to the 28-pin SSOP form factor. Check current availability status as older Maxim Integrated products may have limited stock or end-of-life status.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX1271BEAI+ when bipolar or unipolar input ranges relative to VREF are required, unlike the MAX1270 which uses fixed voltage ranges. Ensure the application operates within the -40°C to +85°C temperature range specified by the 'E' suffix. Verify that the 110ksps sampling rate and 12-bit resolution meet system accuracy needs.

ADCs/DACs - Special Purpose Part Context

This component belongs to the MAX1270/MAX1271 family of multirange ADCs from Analog Devices/Maxim Integrated. The MAX1271 variant specifically allows input ranges defined by the reference voltage (±VREF, etc.), whereas the MAX1270 uses fixed ranges (±10V, ±5V). The 'BEAI' code denotes the extended temperature grade and SSOP packaging.

ADCs/DACs - Special Purpose Replacement Considerations

MAX1271BCAI+ serves as a lower-grade alternative with 0°C to +70°C operation and ±1 LSB INL. MAX1271ACAI+ offers improved linearity (±0.5 LSB INL) but is restricted to the 0°C to +70°C temperature range.