Datasheet LT6100 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Precision, Gain Selectable High Side Current Sense Amplifier |
| Pages / Page | 18 / 1 — FEATURES. DESCRIPTION. Input Offset Voltage: 300µV (Max). Sense Inputs Up … |
| File Format / Size | PDF / 1.5 Mb |
| Document Language | English |
FEATURES. DESCRIPTION. Input Offset Voltage: 300µV (Max). Sense Inputs Up to 48V. 0.5% Gain Accuracy
Model Line for this Datasheet
- LT6100CDD#PBF LT6100CDD#PBF LT6100CDD#TRPBF LT6100CDD#TRPBF LT6100CMS8#PBF LT6100CMS8#PBF LT6100CMS8#TRPBF LT6100CMS8#TRPBF LT6100HDD#PBF LT6100HDD#PBF LT6100HDD#TRPBF LT6100HDD#TRPBF LT6100HMS8#PBF LT6100HMS8#PBF LT6100HMS8#TRPBF LT6100HMS8#TRPBF LT6100IDD#PBF LT6100IDD#PBF LT6100IDD#TRPBF LT6100IDD#TRPBF LT6100IMS8#PBF LT6100IMS8#PBF LT6100IMS8#TRPBF LT6100IMS8#TRPBF
Text Version of Document
LT6100 Precision, Gain Selectable High Side Current Sense Amplifier
FEATURES DESCRIPTION
n
Input Offset Voltage: 300µV (Max)
The LT®6100 is a complete micropower, precision, high n
Sense Inputs Up to 48V
side current sense amplifier. The LT6100 monitors unidi- n
0.5% Gain Accuracy
rectional currents via the voltage across an external sense n
Pin Selectable Gain: 10, 12.5, 20, 25, 40, 50V/V
resistor. Fixed gains of 10, 12.5, 20, 25, 40, 50V/V are n Separate Power Supply: 2.7V to 36V obtained by simply strapping or floating two gain select n Operating Current: 60µA pins. Gain accuracy is better than 0.5% for all gains. n Sense Input Current (VCC Powered Down): 1nA The LT6100 sense inputs have a voltage range that extends n Reverse Battery Protected to –48V from 4.1V to 48V, and can withstand a differential voltage n Buffered Output of the full supply. This makes it possible to monitor the n Noise Filtering Input voltage across a MOSFET switch or a fuse. The part can n –40°C to 125°C Operating Temperature Range also withstand a reverse battery condition on the inputs. n Available in 8-Lead DFN and MSOP Packages Input offset is a low 300µV. CMRR and PSRR are in ex- cess of 105dB, resulting in a wide dynamic range. A filter
APPLICATIONS
pin is provided to easily implement signal filtering with a n Battery Monitoring single capacitor. n Fuse Monitoring The LT6100 has a separate supply input, which operates n Portable and Cellular Phones from 2.7V to 36V and draws only 60µA. When VCC is n Portable Test/Measurement Systems powered down, the sense pins are biased off. This pre- L, LT, LTC, LTM, Linear Technology, the Linear logo and Over-The-Top are registered vents loading of the monitored circuit, irrespective of the trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. sense voltage. The LT6100 is available in an 8-lead DFN and MSOP package.
TYPICAL APPLICATION 0A to 33A High Side Current Monitor with 12kHz Frequency Rolloff Input Offset Voltage vs VS Sense Input Voltage
4.4V TO 48V 3V 1.5 SUPPLY VSENSE = 100mV 2 7 6 VCC = 3V LT6100 V 1.0 T CC A4 A2 A = 25°C V + 8 S 0.5 TAGE (mV) VOUT R 0 SENSE 5 VOUT = 2.5V 3mΩ ISENSE = 33A V – 1 S –0.5 INPUT OFFSET VOL VEE FIL –1.0 LOAD 6100 TA01a 4 3 CONFIGURED FOR GAIN = 25V/V 220pF –1.5 0 5 10 15 20 25 30 35 40 45 50 VS SENSE INPUT VOLTAGE (V) 6100 TA01b 6100fd For more information www.linear.com/LT6100 1
FEATURES DESCRIPTION
n
Input Offset Voltage: 300µV (Max)
The LT®6100 is a complete micropower, precision, high n
Sense Inputs Up to 48V
side current sense amplifier. The LT6100 monitors unidi- n
0.5% Gain Accuracy
rectional currents via the voltage across an external sense n
Pin Selectable Gain: 10, 12.5, 20, 25, 40, 50V/V
resistor. Fixed gains of 10, 12.5, 20, 25, 40, 50V/V are n Separate Power Supply: 2.7V to 36V obtained by simply strapping or floating two gain select n Operating Current: 60µA pins. Gain accuracy is better than 0.5% for all gains. n Sense Input Current (VCC Powered Down): 1nA The LT6100 sense inputs have a voltage range that extends n Reverse Battery Protected to –48V from 4.1V to 48V, and can withstand a differential voltage n Buffered Output of the full supply. This makes it possible to monitor the n Noise Filtering Input voltage across a MOSFET switch or a fuse. The part can n –40°C to 125°C Operating Temperature Range also withstand a reverse battery condition on the inputs. n Available in 8-Lead DFN and MSOP Packages Input offset is a low 300µV. CMRR and PSRR are in ex- cess of 105dB, resulting in a wide dynamic range. A filter
APPLICATIONS
pin is provided to easily implement signal filtering with a n Battery Monitoring single capacitor. n Fuse Monitoring The LT6100 has a separate supply input, which operates n Portable and Cellular Phones from 2.7V to 36V and draws only 60µA. When VCC is n Portable Test/Measurement Systems powered down, the sense pins are biased off. This pre- L, LT, LTC, LTM, Linear Technology, the Linear logo and Over-The-Top are registered vents loading of the monitored circuit, irrespective of the trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. sense voltage. The LT6100 is available in an 8-lead DFN and MSOP package.
TYPICAL APPLICATION 0A to 33A High Side Current Monitor with 12kHz Frequency Rolloff Input Offset Voltage vs VS Sense Input Voltage
4.4V TO 48V 3V 1.5 SUPPLY VSENSE = 100mV 2 7 6 VCC = 3V LT6100 V 1.0 T CC A4 A2 A = 25°C V + 8 S 0.5 TAGE (mV) VOUT R 0 SENSE 5 VOUT = 2.5V 3mΩ ISENSE = 33A V – 1 S –0.5 INPUT OFFSET VOL VEE FIL –1.0 LOAD 6100 TA01a 4 3 CONFIGURED FOR GAIN = 25V/V 220pF –1.5 0 5 10 15 20 25 30 35 40 45 50 VS SENSE INPUT VOLTAGE (V) 6100 TA01b 6100fd For more information www.linear.com/LT6100 1
