Texas Instruments

Category: Amplifiers and Comparators

The automotive-qualified LMP8480-Q1 and LMP8481-Q1 devices 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-Q1) or unidirectional (LMP8480-Q1) current applications and accept input signals with a common-mode voltage range from 4 V to 76 V with a bandwidth of 270 kHz. Because the operating power-supply range overlaps the input common-mode voltage range, the LMP848x-Q1 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-Q1 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 LMP8480-Q1 and LMP8481-Q1 are pin-for-pin replacements for the MAX4080 and MAX4081 devices, offering improved offset voltage, wider reference adjust range, and higher output drive capabilities. The LMP8480-Q1 and LMP8481-Q1 are available in an 8-pin VSSOP package.

Features:

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • 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 (–3 dB): 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

$1.65 - $3.00
Distributor SKU Stock MOQ 1 10 50 100 1000 10000 Purchase
Texas Instruments LMP8480ATQDGKRQ1 3500 1 $2.15 $2.15 $2.15 $1.88 $1.06 $1.06 Buy
Digi-Key 296-46590-1-ND 0 1 $0.00 $2.53 $2.39 $1.96 $1.41 $1.32 Buy
Mouser Electronics 595-LMP8480ATQDGKRQ1 3423 1 $3.00 $2.70 $2.56 $2.11 $1.51 $1.44 Buy
Arrow North American Components LMP8480ATQDGKRQ1 0 3500 $2.54 $2.18 $1.31 $1.75 $1.22 $1.11 Buy
AVNET Europe LMP8480ATQDGKRQ1 3500 * $1.87 Buy
AVNET Express LMP8480ATQDGKRQ1 3500 1 $1.60 $1.53 Buy
Newark LMP8480ATQDGKRQ1 3500 $2.46 $2.46 $2.46 $2.01 $1.61 $1.61 Buy
Verical Marketplace LMP8480ATQDGKRQ1 3351 5 $3.00 $0.67 $1.31 $0.65 $0.62 $1.46 Buy

Parts in family

Technical Specifications

Lead Free Status No
ROHS Compliance Compliant
Bandwidth(kHz) 270
CMRR(Min)(dB) 100
Common Mode Voltage(Max)(V) 76
Common Mode Voltage(Min)(V) 4
Gain Error Drift(Max)(ppm/C) 60
Gain Error(%) 0.8
Gain(V/V) 20,60
Input Offset (+/-)(Max)(uV) 265
Input Offset Drift (+/-)(Typ)(uV/C) 6
Iq(Max)(mA) 0.155
Operating Temperature Range(C) -40 to 125
PSRR(Typ)(uV/V) 0.8
Package Group VSSOP
Package Size mm2
Rating Automotive
Specified Common Mode Voltage(V) 48
Specified Power Supply Voltage(V) 48
Supply Voltage(Max)(V) 7.6
Supply Voltage(Min)(V) 4.5