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

Application Diagram

Figure 7-1 shows a typical application diagram.

TMS3705 ai_app_dgm_cbs881.gifFigure 7-1 Application Diagram

Table 7-1 lists the bill of materials for the application in Figure 7-1.

Table 7-1 Bill of Materials (BOM)

COMPONENT VALUE COMMENTS
R1 47 kΩ
R2 150 kΩ
L1 422 µH at 134 kHz Sumida part number: Vogt 581 05 042 40
C1 3 nF NPO , COG (high Q types). Voltage rating must be 100 V or higher depending on Q factor.
C2 220 pF NPO
C3 220 pF NPO
C4 22 µF Low ESR
Q1 4-MHz resonator muRata part number: CSTCR4M00G55B-R0. See resonator data sheet (load capacitance is important).