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Product Detailed Parameters
- Description：IC COMPARATOR 1 GEN PUR 3DFN
- Series：Over-The-Top®
- Mfr：Analog Devices Inc.
- Package：Tube
- Type：General Purpose
- Number of Elements：1
- Output Type：Open-Collector
- Voltage - Supply, Single/Dual (±)：1.4V ~ 18V
- Voltage - Input Offset (Max)：-
- Current - Input Bias (Max)：0.01µA @ 18V
- Current - Output (Typ)：-
- Current - Quiescent (Max)：17µA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：29µs
- Hysteresis：13.5mV
- Operating Temperature：-40°C ~ 125°C
- Package / Case：3-WFDFN Exposed Pad
- Mounting Type：Surface Mount
- Supplier Device Package：3-DFN (2x2)
- Grade：-
- Qualification：-
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Overview
The LT6703HDC-2 is a micropower, low voltage comparator with an internal 400mV reference. It operates on a single supply from 1.4V to 18V and draws 6.5µA typical current. The device features an inverting input, open-collector output capable of sinking 40mA, and Over-The-Top input range up to 18V. It includes built-in hysteresis for stable operation and is specified for the -40°C to 125°C temperature range.
Feature Summary
- Integrates a micropower comparator with a precise 400mV internal reference
- Supports wide supply voltage range from 1.4V to 18V
- Features Over-The-Top input capability allowing voltages above supply
- Includes internal hysteresis to ensure stable switching
Applications
- Battery-powered system monitoring
- Threshold detectors
- Window comparators
- Relay driving
- Industrial control systems
Procurement Notes
Verify the specific suffix DC indicates the 3-lead DFN package and H denotes the extended industrial temperature grade. Confirm the -2 suffix corresponds to the inverting input configuration required by the circuit design. Ensure compatibility with the 1.4V to 18V supply requirements and check for any lead-free or RoHS compliance documentation if mandated by the project specifications.
Selection Notes
Select this component when a low quiescent current and high input voltage tolerance are required relative to a low supply voltage. The inverting input polarity distinguishes it from the noninverting variant. Consider the thermal performance of the DFN package for high ambient temperatures and verify that the open-collector output interface matches the downstream logic levels.
Part Context
This part belongs to the LT6703 family of micropower comparators. It shares architectural similarities with the LT6703-3 (noninverting) and LT6703HV series (higher voltage ratings). The DC package designation refers to the compact 2mm x 2mm DFN form factor, distinguishing it from the TSOT-23 S5 package options available within the same product line.
Replacement Considerations
LT6703IDC-2#TRPBF
FAQ
What is the function of the second comparator input?
The second input is internally connected to the 400mV reference voltage and is not accessible externally.
Can the output voltage exceed the supply voltage?
Yes, the open-collector output can withstand voltages up to 18V regardless of the supply voltage used.
