LT1712CGN#PBF

Overview

The LT1712CGN#PBF is a dual UltraFast comparator featuring rail-to-rail inputs and complementary outputs. It operates on single supplies from 2.4V to 12V or dual supplies of ±2.4V to ±6V. The device includes an output latch for data retention and handles input voltages exceeding supply rails without phase reversal. Propagation delay is 4.5ns at 20mV overdrive. It is housed in a 16-lead narrow SSOP package.

Feature Summary

• Rail-to-rail inputs extend beyond supply rails with phase reversal protection
• Complementary outputs interface directly with TTL or CMOS logic
• Internal latch retains output data when the latch pin is held high
• Optimized for low voltage operation at 3V and 5V power supplies

Applications

• High speed automatic test equipment
• Current sense for switching regulators
• Crystal oscillator circuits
• High speed sampling circuits
• Window comparators

Procurement Notes

Verify the specific suffix CGN corresponds to the commercial temperature range (-40°C to 85°C) and the 16-lead narrow SSOP package. Confirm that the part number matches the official Analog Devices datasheet specifications for the LT1712 series to ensure correct electrical characteristics and pinout compatibility.

Selection Notes

Select this component for applications requiring fast response times and rail-to-rail signal handling. Ensure the design accommodates the 16-lead SSOP footprint. Consider the internal latch functionality if output data retention is required. Verify that the source impedance remains low to minimize bias current effects.

Part Context

This part belongs to the LT1711/LT1712 family of UltraFast comparators. The LT1712 specifically provides two independent channels in a 16-lead package, whereas the LT1711 offers a single channel in an 8-lead MSOP. Both share identical electrical performance characteristics regarding speed and input/output capabilities.

Replacement Considerations

LT1712IGN is the industrial temperature grade equivalent in the same package.

FAQ

How does the input common mode range behave?

The common mode range extends 100mV beyond both supply rails. Inputs can be taken to opposite rails without significant increase in input current.

What is the function of the LATCH ENABLE pin?

Holding the latch pin high retains the current input data at the output. The pin has built-in hysteresis to protect against slow-moving or noisy signals.