MAX1270ACAI

ADCs/DACs - Special Purpose Overview

The MAX1270ACAI is a multirange, 12-bit data-acquisition system (DAS) from Analog Devices/Maxim Integrated. It operates on a single +5V supply while accepting analog input signals spanning above the rail and below ground. The device features eight independently programmable analog channels with software-selectable ranges: ±10V, ±5V, 0 to +10V, and 0 to +5V. It provides a throughput rate of 100ksps, an integral nonlinearity (INL) of ±0.5 LSB, and a signal-to-noise ratio of 70 dB. The unit includes fault protection up to ±16.5V, a serial interface compatible with SPI/QSPI/MICROWIRE, and is housed in a 28-pin SSOP package.

ADCs/DACs - Special Purpose Feature Summary

• 12-Bit Resolution with ±0.5 LSB Integral Nonlinearity
• Eight Analog Input Channels with Software-Selectable Ranges
• 100ksps Sampling Rate via Serial Interface
• ±16.5V Overvoltage-Tolerant Input Multiplexer

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 'A' indicates the industrial temperature grade (0°C to +70°C) and 'C' denotes the accuracy class (±0.5 LSB INL). Confirm the package type is 28-pin SSOP. Ensure the design supports the required serial clock frequencies for the A-grade variant.

ADCs/DACs - Special Purpose Selection Notes

Select this component when interfacing sensors requiring direct connection to a single +5V system without external level shifting. The MAX1270ACAI is suitable for applications needing high channel count and wide input range flexibility. Compare against the MAX1270BCAI if higher speed (110ksps) or lower cost is prioritized over the tighter linearity specification.

ADCs/DACs - Special Purpose Part Context

This part belongs to the MAX1270/MAX1271 family of multirange ADCs. The MAX1270 variant supports fixed voltage ranges, whereas the MAX1271 uses reference-dependent ranges. The AC designation specifies the commercial temperature range and high-accuracy performance tier within the product line.

ADCs/DACs - Special Purpose Replacement Considerations

The MAX1270BCAI offers identical functionality with a throughput increase to 110ksps and ±1 LSB INL. The MAX1270AEAI+T provides the same electrical characteristics in a tape-and-reel packaging format.