MAX192AEWP+

ADCs/DACs - Special Purpose Overview

The MAX192AEWP+ is a low-power, 8-channel, serial 10-bit analog-to-digital converter (ADC) from Analog Devices/Maxim Integrated. It integrates an 8-channel multiplexer, high-bandwidth track/hold circuit, and a 4-wire serial interface compatible with SPI, QSPI, Microwire, and TMS320 DSPs. Operating on a single +5V supply, it features an internal 4.096V reference with ±30ppm/°C drift and supports both single-ended and differential input configurations. The device achieves a sampling rate of 133ksps with a typical operating current of 1.5mA, reducing to under 10µA in power-down mode. It is housed in a 20-pin Wide SO package and operates within a temperature range of -40°C to +85°C.

ADCs/DACs - Special Purpose Feature Summary

• 8-Channel Multiplexer: Supports software-configurable single-ended or differential (unipolar/bipolar) inputs.
• High-Speed Conversion: Internal track/hold provides a 133ksps sampling rate with 4.5MHz small-signal bandwidth.
• Integrated Reference: Includes an internal 4.096V reference buffer amplifier to simplify gain trimming.
• Low Power Consumption: Operates at 1.5mA typically; consumes less than 10µA in full power-down mode.
• Flexible Serial Interface: Connects directly to SPI, QSPI, Microwire, and TMS320 devices without external logic.

ADCs/DACs - Special Purpose Applications

• Portable Data Logging
• Battery-Powered Instruments
• Medical Instruments
• Robotics
• Consumer Electronics

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'WP+' corresponds to the 20-pin Wide SOIC package and the -40°C to +85°C industrial temperature grade when sourcing. Confirm RoHS compliance status as indicated by the '+' suffix. Check for obsolescence or lifecycle status, as older Maxim parts may have limited availability or be superseded by newer series components.

ADCs/DACs - Special Purpose Selection Notes

Select this component for applications requiring multiple analog inputs with moderate resolution and low power consumption. Ensure the system can accommodate a single +5V supply. If higher resolution is needed, consider pin-compatible upgrades like the MAX186/MAX188. Verify that the source impedance of analog inputs is low enough to meet the 1.5µs acquisition time requirement or add external buffering if necessary.

ADCs/DACs - Special Purpose Part Context

The MAX192 belongs to the MAX192A/B family of low-power ADCs. The 'A' designation indicates ±0.5 LSB INL accuracy, while 'B' indicates ±1 LSB INL. The 'E' suffix denotes the extended temperature range (-40°C to +85°C). The 'WP' suffix specifies the 20-pin Wide Small Outline Package. This part serves as a cost-effective solution for multi-channel data acquisition systems where power efficiency and serial interface simplicity are priorities.

ADCs/DACs - Special Purpose Replacement Considerations

For direct pin-compatible upgrades requiring higher resolution, consider the MAX186 or MAX188 (12-bit versions). For modern replacements with similar functionality but updated packaging or performance, evaluate Analog Devices' current SAR ADC portfolios, ensuring compatibility with the existing serial interface protocol and voltage requirements.