LT1720
PRODUCTIONDual, 4.5ns, Single Supply 3V/5V Comparators with Rail-to-Rail Outputs
- Part Models
- 12
- 1ku List Price
- Starting From $4.26
Part Details
- UltraFast:
- 4.5ns at 20mV Overdrive
- 7ns at 5mV Overdrive
- Low Power: 4mA per Comparator
- Optimized for 3V and 5V Operation
- Pinout Optimized for High Speed Ease of Use
- Input Voltage Range Extends 100mV Below Negative Rail
- TTL/CMOS Compatible Rail-to-Rail Outputs
- Internal Hysteresis with Specified Limits
- Low Dynamic Current Drain; 15µA/(V-MHz), Dominated by Load In Most Circuits
- Tiny 3mm × 3mm × 0.75mm DFN Package (LT1720)
The LT1720/LT1721 are UltraFast™ dual/quad comparators optimized for single supply operation, with a supply voltage range of 2.7V to 6V. The input voltage range extends from 100mV below ground to 1.2V below the supply voltage. Internal hysteresis makes the LT1720/LT1721 easy to use even with slow moving input signals. The rail-to-rail outputs directly interface to TTL and CMOS. Alternatively, the symmetric output drive can be harnessed for analog applications or for easy translation to other single supply logic levels.
The LT1720 is available in three 8-pin packages; three pins per comparator plus power and ground. In addition to SO and MSOP packages, a 3mm × 3mm low profile (0.8mm) dual fine pitch leadless package (DFN) is available for space limited applications. The LT1721 is available in the 16-pin SSOP and S packages.
The pinouts of the LT1720/LT1721 minimize parasitic effects by placing the most sensitive inputs (inverting) away from the outputs, shielded by the power rails. The LT1720/LT1721 are ideal for systems where small size and low power are paramount.
Applications
- High Speed Differential Line Receiver
- Crystal Oscillator Circuits
- Window Comparators
- Threshold Detectors/Discriminators
- Pulse Stretchers
- Zero-Crossing Detectors
- High Speed Sampling Circuits
Documentation
Data Sheet 1
Reliability Data 1
Application Note 2
Design Note 1
Technical Articles 3
Product Selector Card 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT1720CDD#PBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LT1720CDD#TRPBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LT1720CMS8#PBF | 8-Lead MSOP | ||
| LT1720CMS8#TRPBF | 8-Lead MSOP | ||
| LT1720CS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1720CS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1720IDD#PBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LT1720IDD#TRPBF | 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) | ||
| LT1720IMS8#PBF | 8-Lead MSOP | ||
| LT1720IMS8#TRPBF | 8-Lead MSOP | ||
| LT1720IS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1720IS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT1720CMS8#PBF | PRODUCTION | |
| LT1720CMS8#TRPBF | PRODUCTION | |
| LT1720IMS8#PBF | PRODUCTION | |
| LT1720IMS8#TRPBF | PRODUCTION | |
|
Oct 24, 2024 - 24_0246 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package |
||
| LT1720CS8#PBF | PRODUCTION | |
| LT1720CS8#TRPBF | PRODUCTION | |
| LT1720IS8#PBF | PRODUCTION | |
| LT1720IS8#TRPBF | PRODUCTION | |
|
Oct 12, 2022 - 22_0254 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2) |
||
| LT1720CS8#PBF | PRODUCTION | |
| LT1720CS8#TRPBF | PRODUCTION | |
| LT1720IS8#PBF | PRODUCTION | |
| LT1720IS8#TRPBF | PRODUCTION | |
|
Jun 11, 2021 - 21_0060 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LT1720CS8#PBF | PRODUCTION | |
| LT1720CS8#TRPBF | PRODUCTION | |
| LT1720IS8#PBF | PRODUCTION | |
| LT1720IS8#TRPBF | PRODUCTION | |
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LT1720IMS8#PBF | PRODUCTION | |
| LT1720IMS8#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT1720
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.