SNOSD35A October   2016  – November 2016 TLV8811 , TLV8812

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 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Negative-Rail Sensing Input
      2. 7.4.2 Rail to Rail Output Stage
      3. 7.4.3 Design Optimization for Nanopower Operation
      4. 7.4.4 Driving Capacitive Load
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application: Three Terminal CO Gas Sensor Amplifier
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
    3. 8.3 Do's and Don'ts
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Related Links
    4. 11.4 Receiving Notification of Documentation Updates
    5. 11.5 Community Resources
    6. 11.6 Trademarks
    7. 11.7 Electrostatic Discharge Caution
    8. 11.8 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • For Cost-Optimized Systems
  • Nanopower Supply Current: 425 nA/channel
  • Offset Voltage: 500 µV (max)
  • TcVos: 1 µV/°C
  • Gain-Bandwidth: 6 kHz
  • Unity-Gain Stable
  • Low Input Bias Current : 100 fA
  • Wide Supply Range: 1.7 V to 5.5 V
  • Rail-to-Rail Output
  • No Output Reversals
  • EMI Protection
  • Temperature Range: –40°C to 125°C
  • Industry Standard Packages:
    • Single in 5-pin SOT-23
    • Dual in 8-pin VSSOP

2 Applications

  • Gas Detectors (CO and O2)
  • PIR Motion Detectors
  • Current Sensing
  • Thermostats
  • IoT (Internet of Things) Remote Sensors
  • Active RFID Readers and Tags
  • Portable Medical Equipment
  • Portable Glucose Monitors

3 Description

The TLV8811 (single) and TLV8812 (dual) family of precision ultra-low-power operational amplifiers are ideal for cost-optimized, “Always ON” sensing applications in battery powered wireless and low power wired equipment. With 6 kHz of bandwidth from 425 nA of quiescent current and a trimmed offset voltage to under 500µV, the TLV881x amplifiers provide high precision while minimizing power consumption in equipment such as CO gas detectors and portable electronic devices where operational battery-life is critical. They also have a CMOS input stage enabling fempto-amp bias currents, thereby reducing IBIAS and IOS errors that would otherwise impact high source impedance sensing applications. Additionally, built-in EMI protection reduces sensitivity to unwanted RF signals from mobile phones, WiFi, radio transmitters, and tag readers.

The TLV8811 (single) and TLV8812 (dual) channel versions are available in industry standard 5-pin SOT-23 and 8-pin VSSOP packages respectively.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE
TLV8811 SOT-23 (5) 2.90 mm x 1.60 mm
TLV8812 VSSOP (8) 3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.

LPV81x and TLV881x Nanopower Amplifiers

PART NUMBER CHANNELS SUPPLY
CURRENT
(Typ per Channel)		 OFFSET
VOLTAGE
(Max at 25°C)
LPV811 1 450 nA 370 µV
LPV812 2 425 nA 300 µV
TLV8811 1 450 nA 550 µV
TLV8812 2 425 nA 500 µV

Nanopower Oxygen Sensor

TLV8811 TLV8812 Prec_Oxy_Sens.gif

Nanopower CO Sensor

TLV8811 TLV8812 O2_Sens_Ckt.gif