TC7136CLW713

ADCs/DACs - Special Purpose Overview

The TC7136CLW713 is a low power, 3-1/2 digit analog-to-digital converter with integrated LCD drivers. It features a dual-slope conversion architecture with an integrator output zero phase for fast over-range recovery and ensured first reading accuracy. The device incorporates a precision internal reference with a typical temperature drift of 70ppm/°C. Key electrical specifications include a maximum noise level of 15µV P-P, high resolution of 0.05%, and low input leakage current of 1pA typical. It operates on a single 9V supply with typical power dissipation of 500µW.

ADCs/DACs - Special Purpose Feature Summary

• Dual-slope ADC with integrator output zero phase for fast over-range recovery
• Internal reference with 70ppm/°C typical temperature drift (TC7136)
• Low noise performance: 15µV P-P
• High impedance differential inputs with 1pA typical leakage current

ADCs/DACs - Special Purpose Applications

• Thermometry
• Bridge readouts including strain gauges and load cells
• Digital meters for voltage, current, ohms, power, and pH
• Portable instrumentation

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'CLW' corresponds to the 44-pin PLCC package and commercial temperature range (0°C to +70°C). Confirm that the '713' suffix aligns with the manufacturer's reel packaging requirements if applicable. Check for obsolete status or lifecycle notices from Microchip Technology before finalizing procurement plans.

ADCs/DACs - Special Purpose Selection Notes

Select the TC7136CLW713 when a 44-pin PLCC package is required for the standard TC7136 specification. Choose this part over the TC7136A variant if the higher temperature drift of 70ppm/°C is acceptable for the application. Ensure external component values, such as the integrating capacitor and resistor, are selected based on the desired full-scale voltage range and conversion rate.

ADCs/DACs - Special Purpose Part Context

The TC7136CLW713 belongs to the TC7136 family of 3-1/2 digit ADCs. It serves as a drop-in replacement for the TC7126 and ICL7126 in existing designs. The 'CLW' designation specifically identifies the 44-pin Plastic Leadless Chip Carrier package. This model provides standard commercial grade performance without the improved reference drift characteristics found in the TC7136A series.

ADCs/DACs - Special Purpose Replacement Considerations

The TC7136CLW713 is functionally compatible with the TC7126 and ICL7126. For upgrades requiring lower temperature drift, consider the TC7136ACLW713 which offers 35ppm/°C typical drift. Other package options within the same family include TC7136CKW (PQFP) and TC7136CPI (PDIP).