MAX192BEAP

ADCs/DACs - Special Purpose Overview

The MAX192BEAP is a low-power, 8-channel, serial 10-bit analog-to-digital converter (ADC) from the MAX192 family. It integrates an 8-channel multiplexer, high-bandwidth track/hold circuit, and successive-approximation architecture. Operating on a single +5V supply, it supports software-configurable single-ended and differential inputs. The device features a 4-wire serial interface compatible with SPI, QSPI, and Microwire standards. Key electrical parameters include a 133ksps sampling rate, internal 4.096V reference, and INL/DNL accuracy of ±1 LSB for the B-grade variant. It operates within a temperature range of -40°C to +85°C in a 20-pin SSOP package.

ADCs/DACs - Special Purpose Feature Summary

• 8-Channel Multiplexer: Supports single-ended or 4-channel differential input configurations via software control.
• High-Speed Conversion: Internal track/hold provides a 133ksps sampling rate with 4.5MHz small-signal bandwidth.
• Low Power Consumption: Operates at 1.5mA during active mode and reduces to under 10µA in full power-down mode.
• Integrated Reference: Includes an internal 4.096V reference with ±30ppm/°C typical drift and a reference-buffer amplifier.

ADCs/DACs - Special Purpose Applications

• Portable Data Logging Systems
• Battery-Powered Instruments and Management
• Medical Instrumentation
• Robotics Control Systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific grade suffix 'B' indicates ±1 LSB INL/DNL performance compared to the 'A' grade's ±0.5 LSB specification. Confirm the 'E' suffix denotes the industrial temperature range (-40°C to +85°C). Ensure the 'AP' suffix corresponds to the 20-pin shrink-small-outline package (SSOP) with 5.30mm width. Check for RoHS compliance status as indicated by the '+' designation if required by local regulations.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX192BEAP when 10-bit resolution and 133ksps throughput are sufficient for the application. Choose this part over the MAX186/MAX188 if pin compatibility is needed but higher precision or different channel counts are not required. Consider the internal clock mode for simplified microprocessor interfaces where external clock generation is undesirable. Verify that the source impedance of analog inputs is low enough to meet the 1.5µs acquisition time requirement without additional buffering.

ADCs/DACs - Special Purpose Part Context

The MAX192BEAP belongs to the MAX192 series of low-cost, low-power data-acquisition systems. It is functionally similar to the MAX192AEAP but offers relaxed linearity specifications (±1 LSB vs ±0.5 LSB INL). It serves as a bridge between simpler parallel ADCs and higher-resolution serial converters, offering a balance of speed, power, and integration in a compact SSOP footprint.

ADCs/DACs - Special Purpose Replacement Considerations

The MAX192AEAP is a direct pin-compatible alternative with tighter linearity specifications (±0.5 LSB INL/DNL). For applications requiring 12-bit resolution, the MAX186 or MAX188 offer pin-compatible upgrades. Other variants like MAX192BCPP provide commercial temperature ranges in DIP packages.