LTC1406IGN#PBF

Analog To Digital Converters (ADC) Overview

The LTC1406IGN#PBF is an 8-bit, 20Msps sampling A/D converter in a 24-lead narrow SSOP package. It features a 250MHz internal sample-and-hold and accepts ±1V differential or 2V single-ended inputs. Powered by a single 5V supply, it dissipates 150mW at full throughput and draws 1μA in shutdown mode. The device provides true differential inputs with 60dB common-mode rejection and includes overflow/underflow detection. Digital outputs interface with 3V or 5V logic via separate OVDD/OGND supplies.

Analog To Digital Converters (ADC) Feature Summary

• 20Msps sampling rate with 250MHz input bandwidth for high-speed undersampling
• True differential analog inputs rejecting common-mode noise up to 60dB
• ±1LSB maximum DNL and INL over temperature
• Separate digital output supply (OVDD) enabling 3V logic compatibility

Analog To Digital Converters (ADC) Applications

• Telecommunications and wireless communications systems
• Digital cellular telephones
• Video digitizing and digital television
• High-speed data acquisition
• CCDs and image scanners

Analog To Digital Converters (ADC) Procurement Notes

Verify the suffix IGN#PBF corresponds to the industrial temperature range (-40°C to +85°C) and lead-free RoHS compliance. Confirm the package is the 24-lead narrow SSOP. Ensure the source document matches the Analog Devices datasheet for the LTC1406 family.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring low power consumption and wide dynamic range at moderate resolution. The 250MHz bandwidth supports undersampling techniques. Ensure the driving circuit can settle within 25ns to maintain performance at 20Msps. Use an external 2.5V reference on the VREF pin for optimal linearity.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1406 series of low-power, high-speed ADCs from Analog Devices. It utilizes a pipelined architecture with five clock cycles of latency. The device is designed for easy integration into systems requiring 8-bit precision at 20Msps with minimal external components.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

Analog To Digital Converters (ADC) FAQ

How does the LTC1406 handle overrange or underrange conditions?

The OF/UF pin indicates these states. A logic high with all data outputs low indicates underrange; a logic high with all data outputs high indicates overrange.

What is the minimum clock frequency required for proper operation?

The minimum conversion rate is 10kHz. Below this frequency, internal circuitry may not operate correctly due to dynamic limitations.

Can the LTC1406 interface directly with 3V digital logic?

Yes, by connecting the OVDD pin to a 3V supply instead of the standard 5V DVDD, the digital outputs will be compatible with 3V logic levels.