SNOSAI9I September 2005  – November 2015 LMP7701 , LMP7702 , LMP7704

PRODUCTION DATA. 

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

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 NUMBERPACKAGEBODY SIZE (NOM)
LMP7701SOT-23 (5)1.60 mm × 2.90 mm
SOIC (8)3.91 mm × 4.90 mm
LMP7702VSSOP (8)3.00 mm × 3.00 mm
SOIC (8)3.91 mm × 4.90 mm
LMP7704TSSOP (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