LTC1857IG#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1857IG#TRPBF is an 8-channel, 12-bit analog-to-digital converter (ADC) operating at a sampling rate of 100ksps. It features software-programmable input spans including 0V to 5V, 0V to 10V, ±5V, and ±10V, supporting both single-ended and differential configurations. The device operates from a single 5V supply with a typical power dissipation of 40mW. Key electrical specifications include ±1LSB integral nonlinearity (INL), 83dB signal-to-noise ratio (SNR), and a maximum sampling frequency of 100kHz through the multiplexer inputs. It utilizes a successive approximation register (SAR) architecture.

Analog To Digital Converters (ADC) Feature Summary

• 8-Channel Multiplexer with ±25V overvoltage protection on all channels
• Software-selectable input ranges: 0V to 5V, 0V to 10V, ±5V, or ±10V
• SPI/MICROWIRE compatible serial I/O interface
• Two user-selectable power shutdown modes: Nap and Sleep

Analog To Digital Converters (ADC) Applications

• Industrial process control systems
• Multiplexed data acquisition systems
• High-speed data acquisition for personal computers
• Digital signal processing applications

Analog To Digital Converters (ADC) Procurement Notes

Verify that the #TRPBF suffix indicates tape and reel packaging rather than tube packaging. Confirm the 'I' grade designation corresponds to the industrial temperature range of –40°C to +85°C. Ensure the specific lot date code meets project requirements as manufacturing dates vary by batch.

Analog To Digital Converters (ADC) Selection Notes

Select this component when eight channels of 12-bit resolution are required at 100ksps. Choose the IG variant over the CG version if operation below 0°C is necessary. Verify that the 40mW power dissipation fits within the thermal budget of the SSOP-28 package in the target enclosure.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1857/LTC1858/LTC1859 family of SoftSpan ADCs. The LTC1857 provides 12-bit resolution, while the LTC1858 offers 14 bits and the LTC1859 provides 16 bits. All variants share identical pinouts, interfaces, and power characteristics, differing primarily in resolution and linearity specifications.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitutes include the LTC1857CG#TRPBF for commercial temperature range applications and the LTC1858IG#TRPBF or LTC1859IG#TRPBF for higher resolution requirements. These parts maintain pin compatibility but offer different bit depths.