LTC1400IS8#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1400IS8#TRPBF is a complete 12-bit, 400ksps successive approximation analog-to-digital converter in an 8-lead SOIC package. It operates from a single 5V or ±5V supply, consuming 75mW at full speed. The device integrates a 200ns sample-and-hold circuit and a precision 2.42V internal reference. It supports unipolar (0V to 4.096V) and bipolar (±2.048V) input ranges with guaranteed AC performance of 70dB S/(N+D) and –76dB THD at 100kHz input frequency. Power management includes Nap mode (6mW) for instant wake-up and Sleep mode (30μW typical).

Analog To Digital Converters (ADC) Feature Summary

• 12-Bit Resolution: No missing codes over temperature with ±1LSB INL and DNL.
• High Speed Sampling: 400ksps sampling rate with 200ns acquisition time.
• Low Power Modes: Nap mode (6mW, instant wake) and Sleep mode (30μW typical).
• Integrated Reference: Internal 2.42V bandgap reference available externally.

Analog To Digital Converters (ADC) Applications

• High-speed data acquisition systems
• Digital signal processing front-ends
• Multiplexed data acquisition systems
• Audio and telecom processing
• Battery-operated handheld instruments

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix #TRPBF indicates tape and reel packaging and lead-free compliance. Confirm the 'I' grade designation matches the required 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 a compact 12-bit ADC with integrated reference and low power modes is required. It is suitable for applications needing 400ksps throughput with minimal external components. Consider bipolar operation if negative input voltages are present, requiring a VSS connection to –5V. For higher resolution or speed, other family members like the LTC1401 or LTC1404 may be evaluated.

Analog To Digital Converters (ADC) Part Context

The LTC1400 is part of Linear Technology's (now Analog Devices) line of complete SAR ADCs. It consolidates the ADC core, sample-and-hold, and reference into a small SO-8 package. This integration reduces board space and simplifies design compared to discrete solutions. The IS8#TRPBF variant specifically denotes the industrial temperature range, SOIC-8 package, and tape-and-reel shipping format.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible substitutes within the same family include the LTC1400CS8 (commercial temp) or LTC1400IS8 (tube packaging). For different performance levels, consider the LTC1401 (200ksps) or LTC1404 (600ksps), noting that pinouts and specifications differ. Verify interface compatibility and power requirements when substituting.