MAX192AEWP+T

ADCs/DACs - Special Purpose Overview

The MAX192AEWP+T is a low-power, 8-channel, serial 10-bit analog-to-digital converter (ADC) from the MAX192A series. It integrates an 8-channel multiplexer, high-bandwidth track/hold circuit, and successive-approximation architecture. The device operates on a single +5V supply with a sampling rate of 133 kS/s. It features a 4-wire serial interface compatible with SPI, QSPI, Microwire, and TMS320 DSPs. The part includes an internal 4.096V reference and supports both single-ended and differential input configurations. 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.
• Low Power Consumption: Draws 1.5mA during operation and reduces to under 10µA in full power-down mode.
• Internal Reference: Includes an internal 4.096V reference with ±30ppm/°C typical drift.
• Serial Interface: 4-wire interface compatible with SPI, QSPI, Microwire, and direct connection to TMS320 DSPs via SSTRB.

ADCs/DACs - Special Purpose Applications

• Automotive systems
• Pen-entry systems
• Portable data logging
• Battery-powered instruments
• Medical instruments

ADCs/DACs - Special Purpose Procurement Notes

Verify that the ordering suffix 'WP' corresponds to the 20-pin Wide SOIC package and the '+T' indicates tape-and-reel packaging. Confirm the 'E' suffix denotes the extended industrial temperature range (-40°C to +85°C). Ensure the component is RoHS compliant as indicated by the '+' suffix. Check for availability status as this specific variant may be subject to discontinuation or limited stock depending on the distributor.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX192AEWP+T when an 8-channel ADC with 10-bit resolution and 133 kS/s throughput is required in a surface-mount Wide SO package. Choose this part over the MAX192ACPP if an extended temperature range (-40°C to +85°C) is necessary. Consider the MAX186/MAX188 if a pin-compatible 12-bit upgrade path is desired. Ensure the application can accommodate the single +5V supply requirement and utilizes a serial interface compatible with the device's timing constraints.

ADCs/DACs - Special Purpose Part Context

The MAX192AEWP+T belongs to the MAX192 family of low-cost, low-power data-acquisition systems. It is functionally similar to the MAX192ACPP but differs in package type (Wide SO vs. Plastic DIP) and operating temperature range (Extended vs. Commercial). The 'A' grade specifies tighter linearity specifications (±0.5 LSB INL) compared to the 'B' grade (±1 LSB INL). It serves as a bridge between simple parallel ADCs and higher-speed serial interfaces in embedded control applications.

ADCs/DACs - Special Purpose Replacement Considerations

The MAX192BEWP+T is a pin-compatible alternative with slightly relaxed linearity specifications (±1 LSB INL/DNL). For a 12-bit upgrade, the MAX186/MAX188 series offers pin compatibility. Verify that any replacement maintains the same 20-pin Wide SO package and extended temperature rating.