Packaging information
| Package | Pins SOT-23-THN (DDC) | 6 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 1,000 | SMALL T&R |
Features for the LMP8645HV
- Typical Values, TA = 25°C
- High Common-Mode Voltage Range
- LMP8645 –2 V to 42 V
- LMP8645HV –2 V to 76 V
- Supply Voltage Range 2.7 V to 12 V
- Gain Configurable With a Single Resistor
- Maximum Variable Gain Accuracy (With External Resistor) 2%
- Transconductance 200 µA/V
- Low Offset Voltage 1 mV
- Input Bias 12 µA
- PSRR 90 dB
- CMRR 95 dB
- Temperature Range −40°C to 125°C
- 6-Pin SOT Package
Description for the LMP8645HV
The LMP8645 and the LMP8645HV devices are precision current sense amplifiers that detect small differential voltages across a sense resistor in the presence of high-input common-mode voltages.
Operating from a supply range of 2.7 V to 12 V, the LMP8645 accepts input signals with a common-mode voltage range of –2 V to 42 V, while the LMP8645HV accepts input signals with a common-mode voltage range of –2 V to 76 V. The LMP8645 and LMP8645HV have adjustable gain for applications where supply current and high common-mode voltage are the determining factors. The gain is configured with a single resistor, providing a high level of flexibility, as well as accuracy as low as 2% (maximum) including the gain setting resistor. The output is buffered to provide low output impedance. This high-side current sense amplifier is ideal for sensing and monitoring currents in DC or battery-powered systems, has excellent AC and DC specifications over temperature, and keeps errors in the current sense loop to a minimum. The LMP8645 is an ideal choice for industrial, automotive, and consumer applications, and is available in SOT-6 package.