LTC1040 - Dual Micropower Comparator
Features
- Micropower
1.5µW (1 Sample/Second) - Power Supply Flexibility
Single Supply 2.8V to 16V
Split Supply ±2.8V to ±8V - Guaranteed Max Offset 0.75mV
- Guaranteed Max Tracking Error Between Input Pairs ± 0.1%
- Input Common Mode Range to Both Supply Rails
- TTL/CMOS Compatible with ±5V or Single 5V Supply
- Input Errors are Stable with Time and Temperature
Typical Application
Description
The LTC™1040 is a monolithic CMOS dual comparator manufactured using Linear Technology’s enhanced LTCMOS® silicon gate process. Extremely low operating power levels are achieved by internally switching the comparator ON for short periods of time. The CMOS output logic holds the output information continuously while not consuming any power.
In addition to switching power ON, a switched output is provided to drive external loads during the comparator’s active time. This allows not only low comparator power, but low total system power.
Sampling is controlled by an external strobe input or an internal oscillator. The oscillator frequency is set by an external RC network.
Each comparator has a unique input structure, giving two differential inputs. The output of the comparator will be high if the algebraic sum of the inputs is positive and low if the algebraic sum of the inputs is negative.
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LTC1040CN#PBF | N-18 | N | C | 05-08-1510 (N18) | Yes |
| LTC1040CSW#PBF | SW-18 | SW | C | 05-08-1620 (SW18) | Yes |
| LTC1040CSW#TRPBF | SW-18 | SW | C | 05-08-1620 (SW18) | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC1040CN#PBF | N-18 | C | $2.58 | $2.10 | Yes | |
| LTC1040CSW#PBF | SW-18 | C | $3.08 | $2.70 | Yes | |
| LTC1040CSW#TRPBF | SW-18 | C | $2.80 | Yes | ||
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.Click here to view our complete list of demo boards
Applications
- Battery Powered Systems
- Remote Sensing
- Window Comparator
- BANG-BANG Controllers
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Product Notifications
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
Models for the following parts are available in LTspice:
LTC1040
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
