Datasheet LT6106 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Low Cost 36V High Side Current Sense Amplifier |
| Pages / Page | 14 / 1 — FEATURES. DESCRIPTION. Gain Configurable with Two Resistors. Low Offset … |
| File Format / Size | PDF / 396 Kb |
| Document Language | English |
FEATURES. DESCRIPTION. Gain Configurable with Two Resistors. Low Offset Voltage: 250µV Maximum. Output Current: 1mA Maximum
Model Line for this Datasheet
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LT6106 36V Low Cost High Side Current Sense in a SOT-23
FEATURES DESCRIPTION
n
Gain Configurable with Two Resistors
The LT®6106 is a versatile high side current sense ampli- n
Low Offset Voltage: 250µV Maximum
fier. Design flexibility is provided by the excellent device n
Output Current: 1mA Maximum
characteristics: 250µV maximum offset and 40nA maxi- n
Supply Range: 2.7V to 36V, 44V Absolute Maximum
mum input bias current. Gain for each device is set by two n
Low Input Bias Current: 40nA Maximum resistors and allows for accuracy better than 1%. n
PSRR: 106dB Minimum The LT6106 monitors current via the voltage across an n
Low Supply Current: 65µA Typical, V+ = 12V external sense resistor (shunt resistor). Internal circuitry n
Operating Temperature Range: –40°C to 125°C converts input voltage to output current, allowing for a n
Low Profile (1mm) ThinSOT™ Package small sense signal on a high common mode voltage to
APPLICATIONS
be translated into a ground referenced signal. The low DC offset allows for monitoring very small sense voltages. As a result, a small valued shunt resistor can be used, which n
Current Shunt Measurement minimizes the power loss in the shunt. n
Battery Monitoring n
Power Management The wide 2.7V to 44V input voltage range, high accuracy n
Motor Control and wide operating temperature range make the LT6106 n
Lamp Monitoring ideal for automotive, industrial and power management n
Overcurrent and Fault Detection applications. The very low power supply current of the LT6106 also makes it suitable for low power and battery operated applications. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION 3V to 36V, 5A Current Sense with AV = 10 Measurement Accuracy vs Load Current
3V TO 36V 0.6 LIMIT OVER TEMPERATURE 0.4 0.2 100Ω 0.02Ω 0 TYPICAL PART AT TA = 25°C +IN –IN –0.2 + – LOAD –0.4 V+ V– LIMIT OVER TEMPERATURE –0.6 –0.8 ACCURACY (% OF FULL SCALE) 5A FULL SCALE RIN = 100Ω –1.0 RSENSE = 0.02Ω ROUT = 1k AV = 10 V+ = 3V OUT V –1.2 LT6106 OUT 200mV/A 0 1 2 3 4 5 1k LOAD CURRENT (A) 6106 TA01b 6106 TA01a 6106fb For more information www.linear.com/LT6106 1
FEATURES DESCRIPTION
n
Gain Configurable with Two Resistors
The LT®6106 is a versatile high side current sense ampli- n
Low Offset Voltage: 250µV Maximum
fier. Design flexibility is provided by the excellent device n
Output Current: 1mA Maximum
characteristics: 250µV maximum offset and 40nA maxi- n
Supply Range: 2.7V to 36V, 44V Absolute Maximum
mum input bias current. Gain for each device is set by two n
Low Input Bias Current: 40nA Maximum resistors and allows for accuracy better than 1%. n
PSRR: 106dB Minimum The LT6106 monitors current via the voltage across an n
Low Supply Current: 65µA Typical, V+ = 12V external sense resistor (shunt resistor). Internal circuitry n
Operating Temperature Range: –40°C to 125°C converts input voltage to output current, allowing for a n
Low Profile (1mm) ThinSOT™ Package small sense signal on a high common mode voltage to
APPLICATIONS
be translated into a ground referenced signal. The low DC offset allows for monitoring very small sense voltages. As a result, a small valued shunt resistor can be used, which n
Current Shunt Measurement minimizes the power loss in the shunt. n
Battery Monitoring n
Power Management The wide 2.7V to 44V input voltage range, high accuracy n
Motor Control and wide operating temperature range make the LT6106 n
Lamp Monitoring ideal for automotive, industrial and power management n
Overcurrent and Fault Detection applications. The very low power supply current of the LT6106 also makes it suitable for low power and battery operated applications. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION 3V to 36V, 5A Current Sense with AV = 10 Measurement Accuracy vs Load Current
3V TO 36V 0.6 LIMIT OVER TEMPERATURE 0.4 0.2 100Ω 0.02Ω 0 TYPICAL PART AT TA = 25°C +IN –IN –0.2 + – LOAD –0.4 V+ V– LIMIT OVER TEMPERATURE –0.6 –0.8 ACCURACY (% OF FULL SCALE) 5A FULL SCALE RIN = 100Ω –1.0 RSENSE = 0.02Ω ROUT = 1k AV = 10 V+ = 3V OUT V –1.2 LT6106 OUT 200mV/A 0 1 2 3 4 5 1k LOAD CURRENT (A) 6106 TA01b 6106 TA01a 6106fb For more information www.linear.com/LT6106 1
