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LMP8271

Features: ·Bidirectional Current Sense Capability·Typical Values, TA = 25°C·Input Offset Voltage 1mV max·TCVos (LMP8271) 15µV/°C max·TCVos (LMP8276) 30µV/°C max·CMRR 80dB Min·Extended CMVR -5V to 36V·Output Voltage Swing Rail to Rail·Bandwidth 80KHz·Operating Temperature Range (Ambient...

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SeekIC No. : 004396761 Detail

LMP8271: Features: ·Bidirectional Current Sense Capability·Typical Values, TA = 25°C·Input Offset Voltage 1mV max·TCVos (LMP8271) 15µV/°C max·TCVos (LMP8276) 30µV/°C max·CMRR 80dB Min·Extended CM...

LMP8271 Data Sheet

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Part Number:
LMP8271
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

·Bidirectional Current Sense Capability
·Typical Values, TA = 25°C
·Input Offset Voltage 1mV max
·TCVos (LMP8271) 15µV/°C max
·TCVos (LMP8276) 30µV/°C max
·CMRR 80dB Min
·Extended CMVR -5V to 36V
·Output Voltage Swing Rail to Rail
·Bandwidth 80KHz
·Operating Temperature Range (Ambient) -40°C to 125°C
·Operating Temperature Range (bare die) -40°C to 150°C
·Supply Voltage 4.5V to 5.5V
·Supply Current 1mA




Application

·Fuel Injection Control
·Low Side Driver Configuration Current Sensing
·Power Management Systems




Pinout

Connection Diagram




Specifications

ESD Tolerance (Note 2)
Human Body Model
For input pins only .....................................................±4000V
For All other pins ........................................................±2000V
Machine Model ................................................................200V
Supply Voltage (VS - GND) .............................................5.75V
CMVR Continuous ..............................................-5 to 42 Volts
Transient (300 ms) ........................................-TBD to 45 Volts
Storage Temperature Range ..........................-65 to +150
Junction Temperature (Note 3) ............................+150 max
Soldering Information
Infrared or Convection (20 sec) .....................................235
Wave Soldering Lead Temp. (10 sec) ............................260

Offset Voltage max, 25C 1 mV
TcVos 6 uV/degC
CMRR 95 dB
PSRR 80 dB
Avol 86 dB
Voltage Noise 452 nV/root(Hz)
Max Input Bias Current 20000 nA
Gain Bandwidth 0.08 MHz
Supply Current Per Channel 1 mA
PowerWise Rating 2 12500 uA/MHz
Slew Rate 0.7 Volts/usec
Channels 1 Channels
Supply Min 4.5 Volt
Supply Max 5.5 Volt
Input OutputType R-R In and Out
Output Current 5 mA
Shut down No
Special Features Diff Input; Fixed Av+20; Adj Bias Point; Vcm to +27; AvCl>20; Differential in
Temperature Min -40 deg C
Temperature Max 125 deg C
Function Op Amp
Automotive Selection Guide Yes
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Description

The LMP8271, LMP8276 are fixed gain differential amplifiers with a -2V to 27V input common mode voltage range and a supply voltage range of 4.5V to 5.5V. The LMP8271, LMP8276 are precision amplifiers which will detect, amplify and filter small differential signals in the presence of high common mode voltages.

The gain is fixed at 20 and is adequate to drive an ADC to full scale in most cases. This fixed gain is achieved in two separate stages, a pre-amplifier with gain of +10 and a second stage amplifier with a gain of +2. The internal signal path is brought out on two pins that provide a connection for a filter network.

The LMP8271, LMP8276 will function with reduced specifications over the extended common mode input voltage
range of -5 to 36 Volts. This feature makes the device suitable for applications with load dump in automotive systems.

The midrail offset adjustment pin enables the user to utilize this device for bidirectional current sensing. This is achieved by adjusting an externally set voltage reference. Accurate bidirectional load current measurements are achieved when monitoring the output with respect to this reference voltage






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