| Local sensor accuracy (Max) (+/- C) | 1 |
| Type | Remote |
| Operating temperature range (C) | -40 to 125 |
| Supply voltage (Min) (V) | 2.7 |
| Interface type | I2C, SMBus |
| Supply voltage (Max) (V) | 5.5 |
| Supply current (Max) (uA) | 38 |
| Temp resolution (Max) (bits) | 12 |
| Features | ALERT |
| Remote channels (#) | 1 |
| Addresses | 9 |
| Rating | Catalog |
- ±1°C REMOTE DIODE SENSOR
- ±1°C LOCAL TEMPERATURE SENSOR
- PROGRAMMABLE NON-IDEALITY FACTOR
- PROGRAMMABLE SERIES RESISTANCE CANCELLATION
- ALERT FUNCTION
- PROGRAMMABLE RESOLUTION: 9 to 12 Bits
- PROGRAMMABLE THRESHOLD LIMITS
- TWO-WIRE/SMBus? SERIAL INTERFACE
- MINIMUM AND MAXIMUM TEMPERATURE MONITORS
- MULTIPLE INTERFACE ADDRESSES
- ALERT PIN CONFIGURATION
- DIODE FAULT DETECTION
- APPLICATIONS
- LCD/DLP?/LCOS PROJECTORS
- SERVERS
- INDUSTRIAL CONTROLLERS
- CENTRAL OFFICE TELECOM EQUIPMENT
- DESKTOP AND NOTEBOOK COMPUTERS
- STORAGE AREA NETWORKS (SAN)
- INDUSTRIAL AND MEDICAL EQUIPMENT
- PROCESSOR/FPGA TEMPERATURE MONITORING
DLP is a registered trademark of Texas Instruments.
SMBus is a trademark of Intel Corp.
All other trademarks are the property of their respective owners.
The TMP400 is a remote temperature sensor monitor with a built-in local temperature sensor. The remote temperature sensor diode-connected transistors are typically low-cost, NPN- or PNP-type transistors or diodes that are an integral part of microcontrollers, microprocessors, or FPGAs.
Remote accuracy is ±1°C for multiple IC manufacturers, with no calibration needed. The Two-Wire serial interface accepts SMBus write byte, read byte, send byte, and receive byte commands to program the alarm thresholds and to read temperature data.
The TMP400 is customizable with programmable: series resistance cancellation, non-ideality factor, resolution, and threshold limits. Other features are: minimum and maximum temperature monitors, wide remote temperature measurement range (up to +127.9375°C), diode fault detection, and temperature alert function.
The TMP400 is available in a QSSOP-16 package.