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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 18SO
- Series：LTCMOS™
- Mfr：Analog Devices Inc.
- Package：Tube
- Type：General Purpose
- Number of Elements：2
- Output Type：CMOS, TTL
- Voltage - Supply, Single/Dual (±)：2.8V ~ 16V, ±2.8V ~ 8V
- Voltage - Input Offset (Max)：4.5mV @ ±8V
- Current - Input Bias (Max)：300pA @ ±5V
- Current - Output (Typ)：-
- Current - Quiescent (Max)：3mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：18-SOIC (0.295", 7.50mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：18-SO
- Grade：-
- Qualification：-
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Overview
The LTC1040CSW#PBF is a dual micropower comparator in an 18-lead SOIC-Wide package. It operates on single supplies from 2.8V to 16V or split supplies from -2.8V to -8V. Key electrical parameters include a guaranteed maximum offset voltage of 0.75mV and a tracking error between input pairs of 0.1%. The device features an input common mode range extending to both supply rails. Typical supply current is 1.2mA during the active sampling phase, with response times around 80µs.
Feature Summary
- Dual differential input structure for high accuracy comparison
- Micropower operation via internal switching techniques
- TTL and CMOS logic compatibility without external pull-ups
- Pulsed power output for driving external resistive networks
Applications
- Window comparators with symmetric limits
- Battery-powered systems requiring low power consumption
- Bang-bang controllers
- Remote sensing applications
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the SW package designation matches the required wide plastic outline dimensions. Ensure the operating temperature range aligns with the C grade specifications for industrial environments.
Selection Notes
Select this component for applications demanding extremely low average power consumption at slow sampling rates. The unique dual differential inputs allow for flexible connection methods to minimize tracking errors. Consider the pulsed power output capability if driving high-impedance resistive networks efficiently.
Part Context
This part belongs to the LTC1040 family of micropower dual comparators manufactured using enhanced LTCMOS silicon gate process technology. It is designed to achieve ultra-low power levels by internally switching the comparator on only for short periods while holding output information continuously.
Replacement Considerations
Consult manufacturer documentation for direct replacements. The obsolete J package (CERDIP) may serve as a physical alternative but requires verification of pinout and thermal characteristics.
