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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 8SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- 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)：0.015µA @ ±20V
- Current - Output (Typ)：65mA @ 4.5V
- Current - Quiescent (Max)：60µA
- CMRR, PSRR (Typ)：115dB CMRR, 110dB PSRR
- Propagation Delay (Max)：22µs
- 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 LT1017CS8#PBF is a micropower dual comparator in an 8-lead SOIC package. It operates from a single supply of 1.1V to 40V. Key electrical parameters include a maximum offset voltage of 1mV, maximum bias current of 15nA, and typical output drive of 70mA. Supply current is 30µA. The device features internal pull-up current sources and can drive loads above V+. Operating temperature range is 0°C to 70°C.
Feature Summary
- Internal Class B pull-up current source eliminates external resistive pull-ups
- Output stage drives loads connected to supplies more positive than the device
- On-chip trimming minimizes offset voltage for low input referred errors
- Special circuitry prevents false output states during input overdrive
Applications
- Power supply monitors
- Relay driving circuits
- Oscillators
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS status. Confirm the CS8 designation corresponds to the 8-lead Plastic SO (Narrow) package with the specified commercial temperature grade. Ensure the ordering part number matches the required pinout and marking for integration into the target design.
Selection Notes
Select this component when lowest operating power is prioritized over speed, distinguishing it from the higher-speed LT1018 variant. Consider its compatibility with older dual comparators like 393 type devices for direct pin-compatible upgrades. Evaluate the 70mA typical output drive capability against load requirements without external pull-up components.
Part Context
This device belongs to the LT1017/LT1018 family of general purpose micropower comparators manufactured by Analog Devices Inc. The LT1017 variant is specifically optimized for minimum power consumption compared to the LT1018. The family supports operation from a single 1.1V cell up to 40V, providing flexibility for various low-voltage and standard supply applications.
Replacement Considerations
LT1017CN8
FAQ
Does the output stage require an external pull-up resistor?
No, the output stage includes a Class B pull-up current source that eliminates the need for an external resistive pull-up.
Can the comparator drive loads connected to a voltage higher than its own supply?
Yes, the output stage is designed to allow driving loads connected to a supply more positive than the device.
