TLC7135CDW

ADCs/DACs - Special Purpose Overview

The TLC7135CDW is a dual-slope analog-to-digital converter (ADC) manufactured by Texas Instruments, housed in a 28-pin SOIC package. It provides 4.5-digit resolution with a single differential input channel and parallel BCD output interface. The device operates on a digital supply voltage of 4 V to 6 V and an analog supply range of -8 V to 6 V. Key electrical specifications include a maximum power dissipation of 5 mW, a reference voltage of 4.75 V, and a sampling rate of 3 ksps. It features 50/60 Hz rejection capabilities and functions within a commercial temperature range of 0°C to +70°C.

ADCs/DACs - Special Purpose Feature Summary

• Dual-slope integration architecture providing high precision with 4.5-digit resolution
• True differential input configuration for effective common-mode noise suppression
• Integrated 50/60 Hz line frequency rejection capability
• Direct BCD output interface compatible with LED/LCD displays and microprocessors

ADCs/DACs - Special Purpose Applications

• High-precision digital panel meters
• Industrial process control instrumentation
• Weighing scales and force measurement systems
• Temperature monitoring devices requiring stable DC measurements

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'DW' confirms the SOIC-28 surface-mount package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates prior to procurement. Ensure the component meets the required commercial operating temperature range of 0°C to +70°C for the intended application environment.

ADCs/DACs - Special Purpose Selection Notes

Select this component for applications requiring high-resolution DC signal conversion without external multiplexers. The internal oscillator simplifies design compared to external clock requirements. Verify that the system can accommodate the parallel BCD output format or utilize appropriate decoding logic. Ensure the analog input voltage remains within the specified differential range relative to the analog ground.

ADCs/DACs - Special Purpose Part Context

The TLC7135CDW belongs to the TLC7135 series of 4 1/2-digit ADCs from Texas Instruments. This series is designed as a drop-in replacement for legacy ICL7135 components, offering similar functionality with modern manufacturing processes. The 'C' designation indicates the commercial temperature grade, while 'D' specifies the plastic small-outline package type.

ADCs/DACs - Special Purpose Replacement Considerations

The ICL7135C serves as a direct functional equivalent from Intersil/Renesas. Verify pinout compatibility and electrical parameter tolerances against the original design specifications before substitution.