LTC2237IUH

Analog To Digital Converters (ADC) Overview

The LTC2237IUH is a 10-bit, 40Msps low noise analog-to-digital converter (ADC) from Analog Devices Inc. It operates on a single 3V supply (2.7V to 3.4V) with a typical power dissipation of 120mW. The device features a flexible input range of 1VP-P to 2VP-P and includes an internal reference. Key AC performance metrics include a Signal-to-Noise Ratio (SNR) of 61.8dB and a Spurious Free Dynamic Range (SFDR) of 85dB at the Nyquist frequency. DC specifications provide ±0.1LSB typical Integral Nonlinearity (INL) and ±0.05LSB typical Differential Nonlinearity (DNL).

Analog To Digital Converters (ADC) Feature Summary

• 40Msps sampling rate with 10-bit resolution and no missing codes.
• Low power consumption of 120mW using a single 3V supply.
• High dynamic performance: 61.8dB SNR and 85dB SFDR.
• Integrated clock duty cycle stabilizer for flexible clocking.

Analog To Digital Converters (ADC) Applications

• Wireless and wired broadband communication systems.
• Imaging systems requiring high-frequency signal digitization.
• Ultrasound medical equipment.
• Spectral analysis instruments.
• Portable instrumentation devices.

Analog To Digital Converters (ADC) Procurement Notes

Verify the 'I' suffix indicates the industrial temperature range (-40°C to 85°C). Confirm the 'UH' package designation corresponds to the 32-lead 5mm x 5mm QFN format. Ensure ordering suffixes like #TR or #PBF are added if tape-and-reel or lead-free variants are required, as these do not alter functional specifications.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC2237IUH when a 40Msps sample rate is sufficient for the application bandwidth. Compare against the LTC2238 (65Msps) or LTC2236 (25Msps) if higher or lower speeds are needed. Consider the pin-compatible family members, such as the 12-bit LTC2227, if higher resolution is prioritized over speed.

Analog To Digital Converters (ADC) Part Context

The LTC2237IUH belongs to the LTC223x family, which also includes the LTC2238 (65Msps) and LTC2236 (25Msps). These devices share identical pinouts and functionality, differing primarily in their maximum sampling frequencies. This family is designed for demanding imaging and communications applications requiring low noise and wide dynamic range.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible replacements within the same family include the LTC2238 (higher speed) and LTC2236 (lower speed). For 12-bit resolution options, consider the LTC2227 series. Verify that the alternative part's sampling rate meets the system timing requirements.