SNOSAI9I September   2005  – November 2015 LMP7701 , LMP7702 , LMP7704

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics 3-V
    6. 7.6 Electrical Characteristics 5-V
    7. 7.7 Electrical Characteristics ±5-V
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Capacitive Load
      2. 8.3.2 Input Capacitance
      3. 8.3.3 Diodes Between the Inputs
    4. 8.4 Device Functional Modes
      1. 8.4.1 Precision Current Source
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Low Input Voltage Noise
      2. 9.1.2 Total Noise Contribution
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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1 Features

  • Unless Otherwise Noted,
    Typical Values at VS = 5 V
  • Input Offset Voltage (LMP7701): ±200-µV (Maximum)
  • Input Offset Voltage (LMP7702/LMP7704): ±220-µV (Maximum)
  • Input Bias Current: ±200 fA
  • Input Bias Current: ±200 fA
  • Input Voltage Noise: 9 nV/√Hz
  • CMRR: 130 dB
  • Open-Loop Gain: 130 dB
  • Temperature Range: −40°C to 125°C
  • Unity-Gain Bandwidth: 2.5 MHz
  • Supply Current (LMP7701): 715 µA
  • Supply Current (LMP7702): 1.5 mA
  • Supply Current (LMP7704): 2.9 mA
  • Supply Voltage Range: 2.7 V to 12 V
  • Rail-to-Rail Input and Output

2 Applications

  • High Impedance Sensor Interface
  • Battery-Powered Instrumentation
  • High Gain Amplifiers
  • DAC Buffer
  • Instrumentation Amplifier
  • Active Filters

3 Description

The LMP770x are single, dual, and quad low-offset voltage, rail-to-rail input and output precision amplifiers, each with a CMOS input stage and a wide supply voltage range. The LMP770x are part of the LMP™ precision amplifier family and are ideal for sensor interface and other instrumentation applications.

The specified low-offset voltage of less than ±200 µV, along with the specified low input bias current of less than ±1 pA, make the LMP7701 ideal for precision applications. The LMP770x are built using VIP50 technology, which allows the combination of a CMOS input stage and a 12-V common-mode and supply voltage range. This makes the LMP770x ideal for applications where conventional CMOS parts cannot operate under the desired voltage conditions.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LMP7701 SOT-23 (5) 1.60 mm × 2.90 mm
SOIC (8) 3.91 mm × 4.90 mm
LMP7702 VSSOP (8) 3.00 mm × 3.00 mm
SOIC (8) 3.91 mm × 4.90 mm
LMP7704 TSSOP (14) 4.40 mm × 5.00 mm
SOIC (14) 3.91 mm × 8.65 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Schematic

LMP7701 LMP7702 LMP7704 20127305.gif