LTC6912HGN-1#PBF

Overview

The LTC6912HGN-1#PBF is a dual-channel, low-noise, digitally programmable gain amplifier (PGA) from Analog Devices. It features independent gain control via a 3-wire SPI interface for gains of 0, 1, 2, 5, 10, 20, 50, and 100V/V. The device operates on single or dual supplies ranging from 2.7V to 10.5V total. Key electrical characteristics include a maximum offset voltage of 3.5mV, channel-to-channel gain matching of ±0.2dB, and a typical input noise density of 15.1nV/√Hz at high gains. It offers rail-to-rail input and output swing capabilities.

Feature Summary

• Digitally programmable voltage gains controlled via a standard 3-wire serial interface
• Rail-to-rail input and output signal processing capability
• Hardware shutdown pin for ultra-low power consumption in GN-16 packages
• High channel-to-channel isolation and precise gain matching

Applications

• Data acquisition systems requiring dynamic gain adjustment
• Automatic ranging circuits for sensor interfaces
• Automatic gain control loops in instrumentation
• Multi-channel signal conditioning with matched performance

Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging when ordering. Confirm the H-grade designation ensures operation up to 125°C. Check current availability status as component lifecycles may change. Ensure the SSOP-16 package footprint matches the target PCB design constraints.

Selection Notes

Select this part for applications requiring precise, digitally adjustable gain without external resistors. The H-grade variant is necessary for extended temperature environments up to 125°C. Consider the SSOP-16 package if hardware shutdown functionality is required, as it is not available in DFN variants. Evaluate supply voltage requirements against the 2.7V to 10.5V operating range.

Part Context

This component belongs to the LTC6912 family of dual programmable gain amplifiers. The 'H' suffix denotes an extended industrial temperature grade suitable for harsh environments. The 'GN-16' specifies the narrow plastic SSOP package type. The '#PBF' suffix confirms the use of lead-free soldering materials compliant with RoHS standards.

Replacement Considerations

LTC6912CGN-1#PBF: Lower temperature grade (C-grade). LTC6912IGN-1#PBF: Industrial temperature grade (I-grade). LTC6912HGN-2#PBF: Different gain settings (powers of two). Verify package compatibility and thermal specifications before substitution.