LTC2247IUH#PBF

Analog To Digital Converters (ADC) Overview

The LTC2247IUH#PBF is a 14-bit, 40Msps low-power analog-to-digital converter from Analog Devices. It operates on a single 3V supply (2.7V to 3.4V) with a typical power dissipation of 120mW. The device features a pipeline architecture with a 575MHz full-power bandwidth sample-and-hold circuit. Key AC performance metrics include a Signal-to-Noise Ratio (SNR) of 74.4dB and a Spurious Free Dynamic Range (SFDR) of 90dB at the Nyquist frequency. It supports flexible input ranges from ±0.5V to ±1V via the SENSE pin and includes internal reference capabilities.

Analog To Digital Converters (ADC) Feature Summary

• 14-bit resolution with 40Msps sampling rate
• Low power consumption: 120mW typical at 3V supply
• High dynamic performance: 74.4dB SNR and 90dB SFDR
• Flexible analog input range: ±0.5V to ±1V peak-to-peak
• Integrated clock duty cycle stabilizer for wide duty cycle tolerance

Analog To Digital Converters (ADC) Applications

• Wireless and wired broadband communication systems
• Imaging systems requiring high dynamic range
• Ultrasound medical equipment
• Spectral analysis instruments
• Portable instrumentation devices

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free compliance and standard tube packaging. Confirm the 'I' grade designation matches the required operating temperature range of -40°C to +85°C. Ensure the QFN-32 package dimensions align with the PCB footprint design specifications before finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC2247 over the LTC2246 or LTC2248 based on the required sampling speed; this model provides 40Msps, whereas the family offers 25Msps and 65Msps options respectively. All three share pin compatibility and similar DC accuracy specs. Consider the SENSE pin configuration to determine if the internal reference range meets the application's input voltage requirements without external components.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC2248/LTC2247/LTC2246 family of low-power 3V ADCs. The family shares identical pinouts and functional blocks, differing primarily in sampling rates (65/40/25 Msps). The LTC2247 serves as the mid-speed option within this series, offering a balance between power consumption and conversion speed for demanding imaging and communications applications.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible substitutes within the same family include the LTC2246 (25Msps) and LTC2248 (65Msps). Higher-speed alternatives like the LTC2254 (40Msps, 14-bit) exist but may require different power management strategies. Verify that any replacement maintains the required 14-bit resolution and low power constraints.