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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 8SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Type：General Purpose
- Number of Elements：2
- Output Type：Pull Up
- Voltage - Supply, Single/Dual (±)：1.1V ~ 40V, ±0.55V ~ 20V
- Voltage - Input Offset (Max)：1mV @ ±20V
- Current - Input Bias (Max)：0.075µA @ ±20V
- Current - Output (Typ)：70mA @ 4.5V
- Current - Quiescent (Max)：250µA
- CMRR, PSRR (Typ)：115dB CMRR, 110dB PSRR
- Propagation Delay (Max)：6µs
- Hysteresis：-
- Operating Temperature：0°C ~ 70°C
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-SO
- Grade：-
- Qualification：-
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Overview
The LT1018CS8#TRPBF is a micropower dual comparator in an 8-lead plastic SO package. It operates from a single 1.1V to 40V supply with a typical supply current of 110µA. The device features a class B pull-up current source for internal pull-up, eliminating external resistors. Electrical specifications include a maximum offset voltage of 1mV and a maximum bias current of 15nA. Typical output drive capability reaches 70mA, allowing the output to drive loads connected to a supply more positive than V+.
Feature Summary
- Features a class B pull-up current source that eliminates the need for external resistive pull-ups.
- Output stage designed to drive loads connected to a supply more positive than the device supply.
- On-chip trimming minimizes offset voltage while maintaining high gain and common mode rejection ratio.
- Special circuitry prevents false output states even if the input is overdriven.
Applications
- Power supply monitors
- Relay driving
- Oscillators
Procurement Notes
Verify the specific ordering suffix #TRPBF indicates tape and reel packaging with lead-free compliance. Confirm the S8 designation corresponds to the 8-lead plastic small outline package. Ensure the C grade temperature range meets the operational requirements for the intended environment.
Selection Notes
Select this component when higher speed and drive capability are required compared to the LT1017 variant. The LT1018 offers increased power consumption for improved performance characteristics. Verify compatibility with existing designs using older dual comparators due to pin compatibility.
Part Context
This part belongs to the LT1017/LT1018 family of general purpose micropower comparators manufactured by Analog Devices Inc. The LT1018 variant is optimized for higher power operation and higher speed compared to the LT1017. Both devices share similar architectural features and pinouts.
Replacement Considerations
Pin compatible with older dual comparators such as 393 type devices. Consider LT1017 variants for lower power applications or LT1018 variants in different packages like PDIP or SOIC.
