ADS7835E/2K5

Analog To Digital Converters (ADC) Overview

The ADS7835E/2K5 is a single-channel, 12-bit successive approximation register (SAR) analog-to-digital converter (ADC) manufactured by Texas Instruments. It operates with a sampling rate of 500 kS/s and supports single-ended input signals via an SPI-compatible serial interface. The device functions within an analog and digital supply voltage range of 4.75 V to 5.25 V, consuming 17.5 mW of power at typical operation. Key performance metrics include a signal-to-noise ratio (SNR) of 72 dB, differential nonlinearity (DNL) of ±0.8 LSB, and integral nonlinearity (INL) of ±2 LSB. It features an internal reference and is housed in an 8-pin VSSOP package, operating between -40°C and +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an internal voltage reference to minimize external component count.
• Supports high-speed data acquisition with a 500 kS/s sampling rate.
• Utilizes a standard SPI-compatible serial interface for microcontroller connectivity.
• Delivers 12-bit resolution with low power consumption suitable for battery-operated systems.

Analog To Digital Converters (ADC) Applications

• Portable instrumentation requiring low power and moderate speed.
• Industrial process control systems utilizing single-ended sensor inputs.
• Data acquisition modules interfacing with TMS320C5x processors.
• Battery-powered measurement devices.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix '2K5' against the manufacturer's current datasheet to confirm packaging details, as suffixes often denote reel quantities or tape-and-reel specifications rather than functional changes. Ensure the ordered part matches the required VSSOP-8 package and temperature range. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and compliance with RoHS standards before finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-channel, 12-bit ADC with a 500 kS/s throughput is required. It is appropriate for applications needing an internal reference and SPI interface. Compare DNL and INL specifications against system accuracy requirements. Verify that the single-ended input type aligns with the sensor output configuration. Consider the VSSOP-8 footprint constraints during PCB layout design.

Analog To Digital Converters (ADC) Part Context

The ADS7835 belongs to the ADS7835 series of low-power, high-speed SAR ADCs from Texas Instruments. This series is designed for applications demanding moderate resolution and speed with minimal power usage. The E/2K5 designation indicates the commercial temperature grade and specific packaging variant. It serves as a solution for replacing older parallel ADCs in space-constrained designs.

Analog To Digital Converters (ADC) Replacement Considerations

Consult the Texas Instruments ADC replacement guide for direct pin-compatible alternatives. Verify that substitute parts maintain the 12-bit resolution, 500 kS/s speed, and SPI interface compatibility. Check for differences in supply voltage ranges and package dimensions to ensure mechanical fit.