PCA9691BS/1,118

ADCs/DACs - Special Purpose Overview

The PCA9691BS/1,118 is an 8-bit CMOS data acquisition device featuring four analog inputs and one analog output with a serial I2C-bus interface. It integrates an 8-bit successive approximation ADC and a multiplying DAC. The device supports up to 64 addresses via three hardware pins (A0, A1, A2) and operates on a single supply voltage of 2.5 V to 5.5 V. It includes on-chip sample and hold circuits, analog input multiplexing, and auto-incremented channel selection. The package is HVQFN16 (SOT629-1).

ADCs/DACs - Special Purpose Feature Summary

• 8-bit successive approximation A/D conversion with on-chip sample and hold.
• Four analog inputs programmable as single-ended or differential inputs.
• Multiplying Digital-to-Analog Converter (DAC) with one analog output.
• Supports up to 64 devices on the I2C-bus via three hardware address pins.

ADCs/DACs - Special Purpose Applications

• Data acquisition systems requiring low power consumption.
• Industrial process control applications.
• Battery-powered instrumentation.
• Multi-channel sensor interfaces.

ADCs/DACs - Special Purpose Procurement Notes

Verify component authenticity through authorized NXP Semiconductors distributors. Confirm the specific ordering suffix matches the required package variant. Check for RoHS compliance documentation prior to integration into final assemblies.

ADCs/DACs - Special Purpose Selection Notes

Select this model for designs requiring an HVQFN16 package. Ensure the system I2C bus frequency does not exceed 1 MHz for Fast-mode Plus operation. Verify that the supply voltage range aligns with the 2.5 V to 5.5 V specification.

ADCs/DACs - Special Purpose Part Context

This part belongs to the PCA9691 family of 8-bit A/D and D/A converters. Other variants include the TSSOP16 (PCA9691TS) and SO16 (PCA9691T) packages. The BS suffix specifically denotes the plastic thermal enhanced very thin quad flat package with no leads.

ADCs/DACs - Special Purpose Replacement Considerations

Direct pin-compatible replacements within the same package are limited to other PCA9691 variants such as PCA9691TS or PCA9691T. Cross-package substitutions require PCB layout modifications.