LTC1392 - Micropower Temperature, Power Supply and Differential Voltage Monitor
Features
- Complete Ambient Temperature Sensor Onboard
- System Power Supply Monitor
- 10-Bit Resolution Rail-to-Rail Common-Mode Differential Voltage Input
- Available in 8-Pin SO and PDIP
- 0.2µA Supply Current When Idle
- 700µA Supply Current When Sampling at Maximum Rate
- Single Supply Voltage: 4.5V to 6V
- 3-Wire Half-Duplex Serial I/O
- Communicates with Most MPU Serial Ports and All MPU Parallel I/O Ports
Typical Application
Description
The LTC1392 is a micropower data acquisition system designed to measure temperature, on-chip supply voltage and a differential voltage. The differential inputs feature rail-to-rail common mode input voltage range. The LTC1392 contains a temperature sensor, a 10-bit A/D converter with sample-and-hold, a high accuracy bandgap reference and a 3-wire half-duplex serial interface. The LTC1392 can be programmed to measure ambient temperature, power supply voltage and an external voltage at the differential input pins, that can also be used for current measurement using an external sense resistor. When measuring temperature, the output code of the A/D converter is linearly proportional to the temperature in °C. Production trimming achieves +/-2°C initial accuracy at room temperature and +/-4°C over the full -40°C to 85°C temperature range. The on-chip serial port allows efficient data transfer to a wide range of MPUs over three or four wires. This, coupled with low power consumption, makes remote location sensing possible and facilitates transmitting data through isolation barriers.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 |
|---|---|---|---|---|---|
| LTC1392CN8#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |
| LTC1392CS8#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LTC1392CS8#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LTC1392IN8#PBF | N-8 | N | I | 05-08-1510 (N8) | Yes |
| LTC1392IS8#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
| LTC1392IS8#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | 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 | |
|---|---|---|---|---|---|---|
| LTC1392CN8#PBF | N-8 | C | $5.00 | $3.95 | Yes | |
| LTC1392CS8#PBF | SO-8 | C | $5.10 | $4.05 | Yes | |
| LTC1392CS8#TRPBF | SO-8 | C | $4.11 | Yes | ||
| LTC1392IN8#PBF | N-8 | I | $5.90 | $4.70 | Yes | |
| LTC1392IS8#PBF | SO-8 | I | $6.25 | $4.95 | Yes | |
| LTC1392IS8#TRPBF | SO-8 | I | $5.01 | 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
- Temperature Measurement
- Power Supply Measurement
- Current Measurement
- Remote Data Acquisition
- Environment Monitoring
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Design Tools
Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:
- LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
- LTpowerCAD - A complete power supply selection, synthesis and design tool
- LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
- PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
- Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
- LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
- And More!
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.
