LTC2238IUH#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC2238IUH#TRPBF is a 10-bit, 65Msps pipelined analog-to-digital converter (ADC) from Analog Devices. It operates on a single 3V supply with typical power dissipation of 205mW. 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 linearity specifications are ±0.1LSB INL and ±0.05LSB DNL (typical). The device features a flexible input range of 1VP-P to 2VP-P, a 575MHz full-power bandwidth sample-and-hold, and an optional clock duty cycle stabilizer. It is housed in a 32-lead, 5mm × 5mm QFN package.

Analog To Digital Converters (ADC) Feature Summary

• 10-Bit Resolution with 65Msps Sampling Rate
• Low Power Consumption: 205mW at 3V Supply
• High Dynamic Performance: 61.8dB SNR and 85dB SFDR
• Flexible Input Range: 1VP-P to 2VP-P Differential or Single-Ended

Analog To Digital Converters (ADC) Applications

• Wireless and Wired Broadband Communication Systems
• Imaging Systems
• Ultrasound Equipment
• Spectral Analysis Instruments
• Portable Instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix #TRPBF confirms Lead-Free status and Tape & Reel packaging format. Confirm the 'I' grade designation matches the required -40°C to 85°C operating temperature range for the application environment. Ensure the 32-pin QFN footprint aligns with the PCB design guidelines provided in the datasheet.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a balance of high speed (65Msps) and low power consumption is required for 10-bit conversion. Consider the LTC2237 (40Msps) or LTC2236 (25Msps) if lower sampling rates allow for reduced power dissipation (120mW or 75mW respectively). Verify that the input drive circuitry can support the specified 1V or 2V peak-to-peak ranges around the 1.5V common mode bias.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2238/LTC2237/LTC2236 family of low noise 3V ADCs. It is pin-compatible with other members of the series, including the LTC2228 (12-bit/65Msps), LTC2239 (10-bit/80Msps), and LTC2250/LTC2251 families. This allows for design flexibility across different resolution and speed requirements within the same package form factor.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same package include the LTC2237 (40Msps) and LTC2236 (25Msps) for lower speed applications. For higher speeds, the LTC2250 (105Msps) and LTC2251 (125Msps) are available. Cross-model substitution requires verification of sampling rate and power budget compatibility.