SCBS881E January   2010  – October 2018 TMS3705

PRODUCTION DATA.  

  1. 1Device Overview
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
    4. 1.4 Functional Block Diagram
  2. 2Revision History
  3. 3Device Characteristics
    1. 3.1 Related Products
  4. 4Terminal Configuration and Functions
    1. 4.1 Pin Diagram
    2. 4.2 Signal Descriptions
      1. Table 4-1 Signal Descriptions
  5. 5Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Electrical Characteristics
    5. 5.5 Thermal Resistance Characteristics for D (SOIC) Package
    6. 5.6 Switching Characteristics
    7. 5.7 Timing Diagrams
  6. 6Detailed Description
    1. 6.1  Power Supply
    2. 6.2  Oscillator
    3. 6.3  Predrivers
    4. 6.4  Full Bridge
    5. 6.5  RF Amplifier
    6. 6.6  Band-Pass Filter and Limiter
    7. 6.7  Diagnosis
    8. 6.8  Power-on Reset
    9. 6.9  Frequency Divider
    10. 6.10 Digital Demodulator
    11. 6.11 Transponder Resonance-Frequency Measurement
    12. 6.12 SCI Encoder
    13. 6.13 Control Logic
    14. 6.14 Test Pins
  7. 7Applications, Implementation, and Layout
    1. 7.1 Application Diagram
  8. 8Device and Documentation Support
    1. 8.1 Getting Started and Next Steps
    2. 8.2 Device Nomenclature
    3. 8.3 Tools and Software
    4. 8.4 Documentation Support
    5. 8.5 Community Resources
    6. 8.6 Trademarks
    7. 8.7 Electrostatic Discharge Caution
    8. 8.8 Export Control Notice
    9. 8.9 Glossary
  9. 9Mechanical, Packaging, and Orderable Information

Package Options

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

Power Supply

The device is supplied with 5 V by an external voltage regulator through two supply pins, one for providing the driver current for the antenna and the analog part in front of the digital demodulator and one for supplying the other blocks.

The power supply supplies a power-on reset that brings the control logic into Idle state as soon as the supply voltage drops under a certain value.

In Sleep state, the sum of both supply currents is reduced to 0.2 mA. The base station device falls into Sleep state 100 ms after TXCT has changed to high. When TXCT changes to low or is low, the base station IC immediately goes into and remains in normal operation.