LMP8481 - 具有电压输出的 LMP8480/LMP8481 精确 76V 高侧电流感应放大器

LMP8481是TI德州仪器公司的一款电流分流模拟输出产品，LMP8481是具有电压输出的 LMP8480/LMP8481 精确 76V 高侧电流感应放大器，本站介绍了LMP8481的封装应用图解、特点和优点、功能等，并给出了与LMP8481相关的TI元器件型号供参考。

LMP8481 - 具有电压输出的 LMP8480/LMP8481 精确 76V 高侧电流感应放大器 - 电流分流模拟输出 - 电流感应放大器 - 德州仪器

产品特性

Typical Values, TA = 25°C
Bidirectional or Unidirectional Sensing
Common Mode Voltage Range 4.0 V to 76 V
Supply Voltage Range 4.5 V to 76 V
Fixed Gains 20, 60 and 100 V/V
Gain Accuracy ±0.1%
Offset ±80 µV
Bandwidth (–3dB) 270 kHz
Quiescent Current < 100 µA
Buffered High-Current Output > 5 mA
Input Bias Current 7 µA
PSRR (DC) 122 dB
CMRR (DC) 124 dB
Temperature Range –40°C to 125°C
8-Pin VSSOP Package

产品应用

High-Side Current Sense
Vehicle Current Measurement
Telecommunications
Motor Controls
Laser or LED Drivers
Energy Management
Solar Panel Monitoring

Typical Application Schematic

产品说明

The LMP8480 and LMP8481 are precision high-side current sense amplifiers that amplify a small differential voltage developed across a current sense resistor in the presence of high input common-mode voltages. These amplifiers are designed for bidirectional (LMP8481) or unidirectional (LMP8480) current applications and will accept input signals with common-mode voltage range from 4 V to 76 V with a bandwidth of 270 kHz. Since the operating power supply range overlaps the input common-mode voltage range, the LMP848x can be powered by the same voltage that is being monitored. This benefit eliminates the need for an intermediate supply voltage to be routed to the point of load where the current is being monitored, resulting in reduced component count and board space.

The LMP848x family consists of fixed gains of 20, 60 and 100 for applications that demand high accuracy over temperature. The low-input offset voltage allows the use of smaller sense resistors without sacrificing system error. The wide operating temperature range of –40°C to 125°C makes the LMP848x an ideal choice for automotive, telecommunications, industrial, and consumer applications. The LMP8480 and LMP8481 are pin-for-pin replacements for the MAX4080 and MAX4081, offering improved offset voltage, wider reference adjust range and higher output drive capabilities. The LMP8480 and LMP8481 are available in a 8-pin VSSOP package.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LMP8480	VSSOP (8)	3.00 mm x 3.00 mm
LMP8481	VSSOP (8)	3.00 mm x 3.00 mm

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