SNOSB80C February   2011  – October 2015 LMP8350

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 10-V Electrical Characteristics
    6. 6.6 6.6-V Electrical Characteristics
    7. 6.7 5-V Electrical Characteristics
    8. 6.8 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Full Bandwidth Limitations
      2. 7.3.2 ESD Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Enable Pin and Power Mode Selection
      2. 7.4.2 VOCM Pin and Output Common-Mode Setting
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Fully-Differential Operation
      2. 8.1.2 Single Supply Operation
      3. 8.1.3 Driving Analog to Digital Converters
      4. 8.1.4 Capacitive Drive
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
  9. 9 Power Supply Recommendations
    1. 9.1 Power Supply and VOCM Bypassing
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Power Dissipation
    4. 10.4 Evaluation Board
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Differential Input and Output
  • Tri-Level Power Settings with Shutdown
  • Ultra Low HD2/HD3 and THD+N Distortion
  • Adjustable Output Common-Mode Level
  • Fully-Balanced Differential Architecture
  • Single- or Dual-Supply Operation
  • Operating Voltage Range 4.5 V to 12 V
  • Supply Current 3 mA to 13 mA
  • Total THD+N at 1 KHz 0.000097%
  • HD2 / HD3 Distortion at 1 KHz < –124 dBc
  • Bandwidth 118 mHz
  • Settling to 0.1% 20 ns
  • Low Offset Drift 0.4 µV/°C
  • Offset Voltage 80 µV
  • Voltage Noise 4.6 nV/Hz
  • Operating Temperature Range −40°C to +85°C

2 Applications

  • High-Resolution Differential ADC Drivers
  • Portable Instrumentation
  • Precision Line Drivers

3 Description

The LMP8350 device is an ultra low distortion fully-differential amplifier designed for driving high-performance precision analog-to-digital converters (ADC). As part of the PowerWise™ family, a unique mode enable pin allows the user to choose from three different operating modes, trading power consumption for dynamic performance.

The high power mode is optimized for highest AC performance. The low noise, wide bandwidth, and fast slew rate make the LMP8350 ideal for driving 24-bit ADCs with input sampling rates of 10 MHz or less. The medium power mode is optimized for precision DC performance, and can be used to drive 24-bit ADCs with input sampling rates of 6 MHz or less. The low power mode is a trade-off between AC performance and quiescent current for power-sensitive applications. The disable mode fully shuts down the amplifier for further standby power savings.

The fully differential architecture of this device allows for easy implementation of a single-ended to fully-differential output conversion. Driving a 3-Vpp, 1-kHz output sine wave with the amplifier powered by ±3.3-V rails in high power mode yields 0.000098% THD+N.

The LMP8350 is part of the LMP™ precision amplifier family, and is offered in the 8-pin SOIC package, with an operating temperature range of −40°C to +85°C.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LMP8350 SOIC (8) 3.91 mm × 4.90 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application

LMP8350 30140501.gif