Datasheet Linear Technology LTC2990CMS — 数据表

LTC2990 Quad I2C Voltage, Current and Temperature Monitor FeaTures n DescripTion
The LTC®2990 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the device can be configured to measure many combinations of internal temperature, remote temperature, remote voltage, remote current and internal VCC. The internal 10ppm/°C reference minimizes the number of supporting components and area required. Selectable address and configurable functionality give the LTC2990 flexibility to be incorporated in various systems needing temperature, voltage or current data. The LTC2990 fits well in systems needing sub-millivolt voltage resolution, 1% current measurement and 1°C temperature accuracy or any combination of the three.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Easy Drive is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Measures Voltage, Current and Temperature Measures Two Remote Diode Temperatures ±0.5°C Accuracy, 0.06°C Resolution (Typ) ±1°C Internal Temperature Sensor (Typ) 14-Bit ADC Measures Voltage/Current 3V to 5.5V Supply Operating Voltage Four Selectable Addresses Internal 10ppm/°C Voltage Reference 10-Lead MSOP Package applicaTions n Temperature Measurement Supply Voltage Monitoring Current Measurement Remote Data Acquisition Environmental Monitoring Typical applicaTion
Voltage, Current, Temperature Monitor
2.5V 5V VCC SDA SCL ADR0 ADR1 V1 V2 TUE (°C) V3 LTC2990 V4 GND TINTERNAL MEASURES: TWO SUPPLY VOLTAGES, SUPPLY CURRENT, INTERNAL AND REMOTE TEMPERATURES ­1.0 ­50 ­25 0 50 25 TAMB (°C) 75 100 125
2990 TA01a Temperature Total Unadjusted Error
1.0 ILOAD 0.5 TREMOTE RSENSE TREMOTE 0 ­0.5 2990 TA01b 2990fd For more information www.linear.com/LTC2990 1 LTC2990 absoluTe MaxiMuM raTings
Supply Voltage VCC . ­0.3V to 6.0V Input Voltages V1, V2, V3, V4, SDA, SCL, ADR1, ADR2.­0.3V to (VCC + 0.3V) Operating Temperature Range LTC2990C . 0°C to 70°C LTC2990I .­40°C to 85°C Storage Temperature Range . ­65°C to 150°C Lead Temperature (Soldering, 10 sec). 300°C
(Note 1) pin conFiguraTion
TOP VIEW V1 V2 V3 V4 GND 1 2 3 4 5 10 9 8 7 6 VCC ADR1 ADR0 SCL SDA MS PACKAGE 10-LEAD PLASTIC MSOP TJMAX = 125°C, JA = 150°C/W orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2990CMS#PBF LTC2990CMS#TRPBF LTDSQ 10-Lead Plastic MSOP 0°C to 70°C LTC2990IMS#PBF LTC2990IMS#TRPBF LTDSQ 10-Lead Plastic MSOP ­40°C to 85°C LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION …