LTC1405CGN#PBF

Analog To Digital Converters (ADC) Overview

The LTC1405CGN#PBF is a 12-bit, 5Msps sampling analog-to-digital converter (ADC) in a 28-lead narrow SSOP package. It operates from a single 5V or dual ±5V supply with a typical power dissipation of 115mW. The device features a high dynamic range sample-and-hold circuit, a precision internal reference, and a programmable gain amplifier (PGA). Key electrical specifications include an integral nonlinearity error of less than 0.35 LSB and a differential nonlinearity of less than 0.25 LSB. At the Nyquist frequency of 2.5MHz, it achieves a signal-to-noise plus distortion ratio of 71.3dB and a spurious-free dynamic range of 85dB.

Analog To Digital Converters (ADC) Feature Summary

• 5Msps sampling rate with 12-bit resolution and 100MHz full-power bandwidth
• Low power consumption of 115mW from single 5V or dual ±5V supplies
• Flexible input PGA with selectable 1x or 2x gain for ranges of –2.048V, –1.024V, and –0.512V
• True differential inputs with 75dB common mode rejection ratio

Analog To Digital Converters (ADC) Applications

• Telecommunications systems
• Digital signal processing
• Multiplexed data acquisition systems
• High speed data acquisition
• Spectral analysis

Analog To Digital Converters (ADC) Procurement Notes

Verify the component marking against the datasheet to confirm the specific grade (C or I) and package type (GN). Ensure that the ordering suffix #PBF corresponds to lead-free packaging requirements. Cross-reference the manufacturer's part number with authorized distributors to confirm current availability status.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution at 5Msps is required with low power constraints. Choose the LTC1405 over the pin-compatible LTC1420 if a lower sampling rate is sufficient. Consider the single-supply operation capability if system design requires a 5V rail only, utilizing the VCM pin for input biasing.

Analog To Digital Converters (ADC) Part Context

The LTC1405 belongs to the Analog Devices LTC14xx family of high-speed ADCs. It is designed as a complete solution integrating the sample-and-hold, ADC core, and reference. The CGN variant specifically denotes the commercial temperature range (0°C to 70°C) and the 28-lead narrow SSOP plastic package.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC1420 is a pin-compatible 10Msps version of this device. Verify interface compatibility and power requirements when substituting. No other direct cross-model replacements are documented in the provided source material.