ADS8344E

Analog To Digital Converters (ADC) Overview

The ADS8344E is a 16-bit, 8-channel successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features an internal multiplexer and sample-and-hold circuit for each channel, supporting both pseudo-differential and single-ended input configurations. The device operates on a single supply voltage ranging from 2.7 V to 5.25 V for both analog and digital domains. It delivers a sampling rate of 100 kS/s with a serial SPI-compatible interface. Key performance metrics include a differential nonlinearity (DNL) of ±2 LSB, integral nonlinearity (INL) of 12 LSB, and a signal-to-noise and distortion ratio (SINAD) of 86 dB. Power consumption is specified at 3.2 mW, with a maximum power dissipation of 10 mW. It is housed in a QSOP-20 package and functions within a temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrates eight independent channels with dedicated sample-and-hold circuits and multiplexers for efficient multi-point acquisition.
• Supports flexible input configurations including pseudo-differential and single-ended modes via an external reference.
• Utilizes a high-speed serial interface compatible with standard SPI protocols for straightforward digital connectivity.

Analog To Digital Converters (ADC) Applications

• Signal processing systems in electronic transformers for power system measurement and protection.
• Industrial data acquisition systems requiring high precision and multiple input channels.
• Battery-powered instrumentation where low power consumption is critical.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix and package variant when sourcing, as availability may vary between tube and reel packaging options. Confirm that the component meets RoHS compliance standards required for your region. Ensure the supplier provides valid traceability documentation. Check for moisture sensitivity level (MSL) handling requirements if the component has been stored for extended periods. Validate that the part number matches the exact electrical specifications needed for your design.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS8344E when eight channels are required with 16-bit resolution and 100 kS/s throughput. Consider this part over the ADS8345 if pseudo-differential inputs are acceptable rather than fully differential. Evaluate the external reference requirement against parts with integrated references if board space is limited. Ensure the system clock supports the required SPI timing for the 100 kS/s sampling rate. Verify that the QSOP-20 package fits the PCB layout constraints.

Analog To Digital Converters (ADC) Part Context

The ADS8344E belongs to the ADS834x family of low-power, 16-bit SAR ADCs from Texas Instruments. This family includes variants like the ADS8341 (4-channel), ADS8344 (8-channel), and ADS8345 (8-channel differential). These devices share similar architecture and performance characteristics but differ in channel count and input configuration. The ADS8344E specifically targets applications needing multiple single-ended or pseudo-differential inputs with high accuracy.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS8344N/1K serves as a pin-compatible alternative with different packaging (SSOP-20 vs QSOP-20). The ADS8345E offers similar performance but supports fully differential inputs instead of pseudo-differential. Verify pinout compatibility and electrical parameter alignment before substitution.