LTC1405IGN#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1405IGN#TRPBF 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 typical power dissipation of 115mW. Key electrical specifications include an integral nonlinearity error of less than 0.35 LSB and differential nonlinearity under 0.25 LSB. AC performance features a signal-to-noise plus distortion ratio of 71.3dB and a spurious-free dynamic range of 85dB at the Nyquist frequency of 2.5MHz. The device includes a programmable gain amplifier and flexible input ranges.

Analog To Digital Converters (ADC) Feature Summary

• 5Msps sampling rate with 12-bit resolution and no missing codes
• Low power consumption of 115mW from single 5V or dual ±5V supplies
• Input PGA with digitally selectable 1x or 2x gain for flexible input ranges
• 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 ordering suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm the 'I' grade designation corresponds to the industrial temperature range of –40°C to 85°C. Ensure the supplier provides documentation confirming the part is lead-free and RoHS compliant as specified by the PBF suffix.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC1405IGN#TRPBF for applications requiring low power and high dynamic range at moderate speeds. Use the internal reference for standard configurations or drive VREF externally for variable input spans. Ensure the clock source has a rise time under 5ns for optimal AC performance. Verify that the output logic supply OVDD matches the destination digital system voltage between 3V and 5V.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC1405 family of 12-bit ADCs. It is pin-compatible with the LTC1420, which offers a higher 10Msps sample rate. The IGN variant specifically denotes the industrial temperature range and narrow SSOP packaging, distinguishing it from commercial grade or wider package options within the same functional family.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC1420 is a pin-compatible alternative offering 10Msps operation. For lower speed requirements, verify if slower ADCs meet the bandwidth needs while reducing cost. Cross-reference specific pinouts and supply requirements when substituting with devices from other manufacturers.