ADS8345N/1K

Analog To Digital Converters (ADC) Overview

The ADS8345N/1K is a 16-bit, 8-channel analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a successive approximation register (SAR) architecture with a maximum sampling rate of 100 kS/s. The device supports single-ended or differential input configurations and communicates via a standard SPI interface. It operates on a single supply voltage ranging from 2.7 V to 5.25 V for both analog and digital domains. Key performance metrics include a Signal-to-Noise and Distortion Ratio (SINAD) of 85 dB, integral nonlinearity (INL) of ±8 LSB, and differential nonlinearity (DNL) of ±2 LSB. Typical power consumption is 3.2 mW at 100 kSPS, with a shutdown mode reducing power to under 15 µW. It is housed in a 20-pin SSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Supports flexible input configurations including eight single-ended or four differential channels.
• Integrates an internal multiplexer and sample-and-hold circuit for efficient multi-channel data acquisition.
• Features low-power operation with a dedicated shutdown mode suitable for battery-powered systems.
• Provides high-resolution 16-bit conversion with a throughput rate up to 100 kSPS.

Analog To Digital Converters (ADC) Applications

• Data acquisition systems requiring multi-channel precision measurement.
• Industrial process control and monitoring equipment.
• Portable instruments and personal digital assistants powered by batteries.
• Test and measurement devices needing high-resolution signal digitization.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'N/1K' against the manufacturer's current datasheet to confirm package type and reel quantity specifications. Ensure compatibility with existing board layouts, as the device utilizes a 20-SSOP footprint. Confirm that the external reference voltage requirements align with the system design, as the ADS8345 requires an external reference. Check for any updated environmental compliance documentation such as RoHS status before finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS8345N/1K when eight channels of 16-bit resolution are required within a compact surface-mount package. This component is appropriate for designs prioritizing low power consumption alongside moderate-speed data conversion. Engineers should consider the need for an external voltage reference and ensure the microcontroller interface supports the required SPI timing. Compare against the ADS8344 if only four differential channels are sufficient, as they share pinout compatibility.

Analog To Digital Converters (ADC) Part Context

The ADS8345 belongs to the ADS834x family of high-performance ADCs from Texas Instruments. It is pin-compatible with the ADS7844 and ADS8344, facilitating direct upgrades or replacements in existing designs without PCB modifications. The device represents a solution for applications balancing channel count, resolution, and power efficiency in industrial and portable electronics markets.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS8344N/1K is a pin-compatible alternative offering four differential inputs instead of eight single-ended or mixed-mode inputs. Designers upgrading from ADS7844 can use this part directly due to pin compatibility. Verify that the external reference and clocking requirements remain consistent when substituting these components.