ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 8MSOP
- Series：UltraFast™
- Mfr：Analog Devices Inc.
- Package：Tube
- Type：General Purpose
- Number of Elements：2
- Output Type：CMOS, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±)：2.7V ~ 6V
- Voltage - Input Offset (Max)：3mV @ 5V
- Current - Input Bias (Max)：6µA @ 5V
- Current - Output (Typ)：20mA
- Current - Quiescent (Max)：7mA
- CMRR, PSRR (Typ)：70dB CMRR, 80dB PSRR
- Propagation Delay (Max)：10ns
- Hysteresis：7mV
- Operating Temperature：-40°C ~ 85°C
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-MSOP
- Grade：-
- Qualification：-
Download product information
Overview
The LT1720IMS8#PBF is a dual ultrafast comparator from Analog Devices, optimized for single-supply operation within a 2.7V to 6V range. It features rail-to-rail outputs compatible with TTL and CMOS logic. The device offers a propagation delay of 4.5ns at 20mV overdrive and 7ns at 5mV overdrive. Quiescent supply current is 4mA per comparator. Input voltage extends 100mV below ground. Internal hysteresis simplifies usage with slow signals.
Feature Summary
- Ultrafast response time with specified propagation delays under low overdrive conditions
- Rail-to-rail output stage directly interfaces with standard digital logic families
- Integrated internal hysteresis prevents oscillation and ensures stable switching
- Input common-mode range extends slightly below the negative supply rail
Applications
- Crystal oscillator circuits
- High-speed differential line receivers
- Window comparators
- Threshold detectors and discriminators
- Zero-crossing detectors
Procurement Notes
Verify the specific IMS8 package variant matches the design requirements. Confirm the I-grade temperature rating aligns with the operational environment. Ensure the lead-free finish designation corresponds to manufacturing standards. Validate pinout compatibility during PCB layout integration.
Selection Notes
Select this component for applications requiring high speed in a small footprint. The dual configuration reduces board space compared to single units. Consider the internal hysteresis for noise immunity without external components. Verify power supply constraints fit the 2.7V to 6V operating window.
Part Context
This part belongs to the LT1720/LT1721 family of ultrafast comparators. The LT1720 provides two channels in an 8-pin package. The IMS8 suffix indicates an MSOP package with industrial temperature range. It shares architectural similarities with the quad LT1721 but offers higher channel density per pin count.
Replacement Considerations
LT1720IS8#PBF: Same function with SOIC-8 package instead of MSOP.
FAQ
How does the internal hysteresis affect threshold detection?
Internal hysteresis creates a defined trip point difference, preventing output oscillation when input signals change slowly or contain noise.
What is the input voltage range relative to ground?
The common mode input voltage range extends from 100mV below ground to 1.2V below the positive supply voltage.
