LTC6103 Dual High Voltage, High Side Current Sense Ampli er FEATURES DESCRIPTION Two Independent Current Sense Ampli ers The LTC 6103 is a versatile, high voltage, high side, dual Wide Supply Range: 4V to 60V, 70V Absolute current sense ampli er. The two internal ampli ers are Maximum independent except that they share the same V terminal. Low Offset Voltage: 450V Maximum Design exibility is provided by the excellent device char- Fast Response: 1s Response Time acteristics: 450V maximum offset, and only 275A of Gain Con gurable with External Resistors current consumption (typical at 12V) for each ampli er. Low Input Bias Current: 170nA Maximum The LTC6103 operates on supplies from 4V to 60V. PSRR: 110dB Minimum (6V to 60V) The LTC6103 monitors current via the voltage across an Output Current: 1mA Maximum external sense resistor (shunt resistor). Internal circuitry Low Supply Current: 275A per Ampli er, V = 12V S converts input voltage to output current, allowing for a Speci ed for 40C to 125C Temperature Range small sense signal on a high common mode voltage to be Available in an 8-lead MSOP Package translated into a ground referenced signal. Low DC offset al- lows the use of a small shunt resistor and large gain-setting APPLICATIONS resistors. As a result, power loss in the shunt is minimal. Current Shunt Measurement The wide operating supply range and high accuracy make Battery Monitoring the LTC6103 ideal for an extensive variety of applications Remote Sensing from automotive to industrial and power management. Power Management The fast response makes the LTC6103 the perfect choice High Voltage Level Translator for load current warnings and shutoff protection control. With very low supply current, the LTC6103 is suitable for power sensitive applications. The LTC6103 is available in an 8-lead MSOP package. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Two 16-Bit Current Sense Channels Connected Directly to the LTC2436-1 ADC + + V V Step Response A B V V SENSE SENSE I I LOAD LOAD ++ V SENSE V = 100mV SENSE LOAD LOAD R R IN IN 100 100 5.5V 8 7 6 5 5V +INA INA INB +INB 5V 1F + 2 1 V V SA SB I = 100A OUT 6 T = 25C A CH1 13 + V = 12V 7 12 R = 100 OUTA V OUTB IN LTC6103 LTC2436-1 TO P 4 V OUT R = 5k OUT 1 4 2 11 0.5V I = 0A + + OUT V = V SENSE 5 0V CH0 6103 TA01b 500ns/DIV R R 3,8,9,10,14,15,16 OUT OUT 4.99k 4.99k 6103 TA01a 6103f 1 +LTC6103 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1) Total Supply Voltage (+INA/+INB to V ) ....................70V TOP VIEW OUTA 1 8 +INA Maximum Applied Output Voltage (OUTA/OUTB) ........9V OUTB 2 7 INA Input Current ........................................................10mA NC 3 6 INB 5 +INB V 4 Output Short-Circuit Duration (to V ) ............... Inde nite MS8 PACKAGE Operating Temperature Range 8-LEAD PLASTIC MSOP LTC6103C ............................................ 40C to 85C T = 150C, = 300C/W JMAX JA LTC6103I ............................................. 40C to 85C ORDER PART NUMBER MS8 PART MARKING* LTC6103H .......................................... 40C to 125C LTC6103CMS8 LTCMN Speci ed Temperature Range (Note 2) LTC6103IMS8 LTCMN LTC6103C ................................................ 0C to 70C LTC6103HMS8 LTCMN LTC6103I ............................................. 40C to 85C LTC6103H .......................................... 40C to 125C Order Options Tape and Reel: Add TR Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF Storage Temperature Range ................... 65C to 150C Lead Free Part Marking: