MAX136CPL+

ADCs/DACs - Special Purpose Overview

The MAX136CPL+ is a low-power, 3½-digit analog-to-digital converter (ADC) featuring a dedicated display hold function. It directly drives nonmultiplexed liquid crystal displays without external drive circuitry. The device utilizes dual-slope conversion to reject interference and offers high accuracy with rollover error under one count and zero reading drift below 1µV/°C. Key features include on-chip clock and reference, true differential inputs, and power dissipation guaranteed at less than 1mW with a 9V supply. It is housed in a 40-pin PDIP package.

ADCs/DACs - Special Purpose Feature Summary

• Display Hold Pin: Allows indefinite freezing of the LCD reading independent of ongoing conversions.
• Direct LCD Drive: Eliminates the need for external multiplexing or drive circuitry.
• Low Power Consumption: Guaranteed power dissipation under 1mW, supporting typical 3000-hour battery life on a 9V source.
• High Accuracy: Dual-slope technique rejects common-mode noise; rollover error is less than one count.

ADCs/DACs - Special Purpose Applications

• Digital panel meters
• Portable measurement systems
• Bridge transducer output measurement
• Load cell applications

ADCs/DACs - Special Purpose Procurement Notes

Verify component authenticity through authorized Analog Devices or Maxim Integrated channels. Confirm RoHS compliance status via official datasheets. Check current availability as distribution may vary by region. Ensure proper handling for CMOS inputs to prevent electrostatic discharge damage during installation.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX136CPL+ when a display freeze capability is required, distinguishing it from the ICL7136. It serves as a pin-compatible replacement for the ICL7116 with significantly lower power consumption. Ensure the application requires direct nonmultiplexed LCD driving and operates within the specified 0°C to +70°C temperature range.

ADCs/DACs - Special Purpose Part Context

The MAX136 series includes variants such as the MAX136CMH+ (44 MQFP) and MAX136CQH+ (44 PLCC). The CPL suffix specifically denotes the 40-pin plastic dual in-line package. All listed variants share the same electrical characteristics and functionality, differing only in physical form factor.

ADCs/DACs - Special Purpose Replacement Considerations

The MAX136 is pin-compatible with the ICL7116 but offers reduced power consumption. It differs from the ICL7136 by including a Hold pin and lacking a Reference Low input. Verify that the target system can accommodate the single-ended reference voltage configuration between REF HI and V-.