MAX1273CPA+

ADCs/DACs - Special Purpose Overview

The MAX1273CPA+ is a multirange, 12-bit data-acquisition system (DAS) operating from a single 5V supply. It features software-programmable analog input ranges of ±VREF, ±VREF/2, 0 to VREF, and 0 to VREF/2. The device includes an internal 4.096V reference or supports external references between 2.40V and 4.18V. Key electrical specifications include a throughput rate of 87ksps, a 5MHz track/hold bandwidth, and SPI/QSPI/MICROWIRE-compatible serial interface. Supply current varies with conversion rate, ranging from 1.5mA at 87ksps to 0.2mA at 1ksps.

ADCs/DACs - Special Purpose Feature Summary

• 12-Bit Resolution with No Missing Codes
• Software-Selectable Input Ranges: ±VREF, ±VREF/2, 0 to VREF, 0 to VREF/2
• Internal 4.096V Reference or External Reference Input (2.4V to 4.18V)
• 87ksps Throughput Rate with 5MHz Track/Hold Bandwidth

ADCs/DACs - Special Purpose Applications

• Industrial Control Systems
• Data-Acquisition Systems
• Robotics
• Automatic Testing
• Battery-Powered Instruments

ADCs/DACs - Special Purpose Procurement Notes

Verify the package type matches the required form factor, as the datasheet specifies an 8-pin µMAX package for this component series. Confirm that the ordering suffix indicates lead-free and RoHS compliance status. Ensure the temperature range meets the operational requirements, as the standard variant covers -40°C to +85°C. Cross-reference the specific part number with official manufacturer documentation to confirm availability and exact pinout configuration.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX1273CPA+ when bipolar or unipolar inputs relative to the reference voltage are required, distinguishing it from the fault-protected MAX1272. Ensure the application can accommodate the 8-pin µMAX package constraints. Verify that the system clock frequency does not exceed 1.4MHz to maintain the specified 87ksps throughput. Consider the power-down modes if low standby current is critical for battery-operated designs.

ADCs/DACs - Special Purpose Part Context

The MAX1273 is part of the MAX1272/MAX1273 family of multirange ADCs manufactured by Maxim Integrated, now part of Analog Devices Inc. These devices are designed for applications requiring flexible input scaling without external attenuators. The MAX1273 specifically lacks the ±12V fault protection found in the MAX1272 but offers similar resolution and speed characteristics within a compact surface-mount package.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.