ADCV08832CIMX

Analog To Digital Converters (ADC) Overview

The ADCV08832CIMX is a low voltage, 8-bit successive approximation analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a 3-wire serial interface compliant with the MICROWIRE standard and includes an integrated sample/hold function. The device operates on a single supply ranging from 2.7V to 5.5V, supporting analog input voltages from GND to VCC. Key electrical specifications include a maximum conversion time of 16 µs at a 500 kHz clock frequency, typical power dissipation of 1.7 mW, and a total unadjusted error of ±0.8 LSB. It supports single-ended, differential, and pseudo-differential input configurations.

Analog To Digital Converters (ADC) Feature Summary

• 8-bit resolution with SAR architecture and built-in sample/hold function
• 3-wire serial digital data link compatible with MICROWIRE/SPI standards
• Single supply operation from 2.7V to 5.5V with TTL/CMOS compatibility
• Configurable multiplexed inputs for single-ended, differential, or pseudo-differential modes

Analog To Digital Converters (ADC) Applications

• Digitizing sensors and waveforms
• Process control monitoring
• Remote sensing in noisy environments
• Instrumentation systems
• Embedded systems requiring low power consumption

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix CIMX indicates the SOIC-8 surface mount package supplied in tape and reel format containing 2500 units. Confirm that the industrial temperature rating covers the required junction temperature range of −40°C to +125°C. Ensure the design accounts for the specific logic level requirements to minimize static power dissipation in low power mode.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an 8-bit resolution and serial interface are sufficient for the application. The ADCV08832 is suitable as a pin-compatible replacement for the TLV0832 and ADC0832. Consider the 13 pF input capacitance and source resistance limitations when driving high-impedance analog signals. Verify that the system clock frequency falls within the 10 kHz to 1000 kHz operating range.

Analog To Digital Converters (ADC) Part Context

The ADCV08832 was originally developed by National Semiconductor before its acquisition by Texas Instruments. The CIMX variant specifically denotes the industrial grade version packaged in an 8-pin Small Outline Integrated Circuit (SOIC). This part belongs to the broader family of low-voltage serial ADCs designed for microcontroller interfacing.

Analog To Digital Converters (ADC) Replacement Considerations

The datasheet identifies the ADCV08832 as a superior pin-compatible replacement for the TLV0832 and ADC0832. Designers migrating from these legacy parts should verify that the new supply voltage range and timing parameters align with their existing circuit constraints.

Analog To Digital Converters (ADC) FAQ

How does the ADCV08832 handle analog input voltages outside the supply range?

The device can tolerate analog input voltages up to 50mV below ground or 50mV above VCC without degrading conversion accuracy. Exceeding these limits may cause internal diode conduction and result in errors.

What is the power consumption in low power mode?

When the Chip Select (CS) line is pulled high, the device enters a low power mode where power dissipation drops to less than 0.1 µW. The digital outputs enter a tri-state condition during this mode.

Can the DI and DO lines be tied together?

Yes, the DI and DO lines may be tied together and controlled through a bidirectional processor I/O bit. This is possible because the DI input is only valid during the MUX addressing interval, while the DO line remains in a high impedance state until the conversion begins.