LTC6102 LTC6102-1/LTC6102HV Precision Zero Drift Current Sense Amplifier FeaTuresDescripTion n Supply Range: The LTC®6102/LTC6102HV are versatile, high voltage, high- 4V to 60V, 70V Maximum (LTC6102) side current sense amplifiers. Their high supply voltage 5V to 100V, 105V Maximum (LTC6102HV) rating allows their use in many high side applications, n ±10µV Input Offset Maximum while the low drift and offset ensure accuracy across a n ±50nV/°C Input Offset Drift Maximum wide range of operating conditions. The LTC6102-1 is a n Fast Response: 1µs Step Response version of the LTC6102 that includes a low power disable n Gain Configurable with Two Resistors mode to conserve system standby power. n Low Input Bias Current: 3nA Maximum The LTC6102/LTC6102HV monitor current via the voltage n PSRR 130dB Minimum across an external sense resistor (shunt resistor). Internal n Output Currents up to 1mA circuitry converts input voltage to output current, allowing n Operating Temperature Range: –40°C to 125°C a small sense signal on a large common mode voltage to n Disable Mode (LTC6102-1 Only): 1µA Maximum be translated to a ground-referred signal. Low DC offset n Available in 8-Lead MSOP and 3mm × 3mm allows the use of very low shunt resistor values and large DFN Packages gain-setting resistors. As a result, power loss in the shunt is reduced. applicaTions The wide operating supply and high accuracy make the n Current Shunt Measurement LTC6102 ideal for a large array of applications, from auto- n Battery Monitoring motive, to industrial and power management. A maximum n Remote Sensing input sense voltage of 2V allows a wide range of currents n Load Protection and voltages to be monitored. Fast response makes the n Motor Control LTC6102 the perfect choice for load current warnings and n Automotive Controls shutoff protection control. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear All versions of the LTC6102 are available in 8-lead MSOP Technology Corporation. All other trademarks are the property of their respective owners. and 3mm × 3mm DFN packages. Typical applicaTion10A Current Sense with 10mA Resolution and 100mWDynamic CurrentMaximum DissipationMeasurement Range + 110 RIN V R SENSE SENSE = 100mΩ 20Ω 1mΩ 100 Max VSENSE = 1V – +IN –INS 90 + – –INF 80 L + 5V TO O V+ V– 70 RSENSE = 10mΩ 105V A Max VSENSE = 100µV D V 0.1µF 5V 1µF 60 REG 50 DYNAMIC RANGE (dB) DYNAMIC RANGE RELATIVE VOUT TO 10µV OFFSET VOLTAGE OUT 40 LTC6102 30 LTC2433-1 TO µP ROUT 20 4.99k 0.0001 0.001 0.01 0.1 1 MAXIMUM SENSE VOLTAGE (V) 6102 TA01b 6102 TA01 R V OUT OUT = • VSENSE = 249.5VSENSE *PROPER SHUNT SELECTION COULD ALLOW RIN MONITORING OF CURRENTS IN EXCESS OF 1000A 6102fe For more information www.linear.com/LTC6102 1