SLWS245B May   2014  – February 2017 TRF3722

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
      1. 6.6.1 Modulator Output Spectrum
    7. 6.7  Typical Characteristics - Output Power
    8. 6.8  Typical Characteristics - Gain
    9. 6.9  Typical Characteristics - OIP3
    10. 6.10 Typical Characteristics - OIP2
    11. 6.11 Typical Characteristics - OP1dB
    12. 6.12 Typical Characteristics - Noise
    13. 6.13 Typical Characteristics - Unadjusted CF
    14. 6.14 Typical Characteristics - Unadjusted SBS
    15. 6.15 Typical Characteristics - LO Harmonic
    16. 6.16 Typical Characteristics - BB Harmonic
    17. 6.17 Typical Characteristics - RF Output Return Loss
    18. 6.18 Typical Characteristics - PLL/VCO
    19. 6.19 Typical Characteristics - Current Consumption
    20. 6.20 Typical Characteristics - Power Dissipation
  7. 7 Parameter Measurement Information
    1. 7.1 Serial Interface Timing Diagram
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 RF Output
      2. 8.3.2 Baseband Inputs
      3. 8.3.3 LO Output
      4. 8.3.4 PLL Architecture
      5. 8.3.5 External VCO
      6. 8.3.6 Loop Filter
      7. 8.3.7 Lock Detect
    4. 8.4 Device Functional Modes
      1. 8.4.1 Selecting PLL Divider Values
      2. 8.4.2 Setup Example for Integer Mode
      3. 8.4.3 Integer and Fractional Mode Selection
      4. 8.4.4 Selecting the VCO and VCO Frequency Control
    5. 8.5 Register Maps
      1. 8.5.1 Serial interface Register Definition
        1. 8.5.1.1 BIAS SETTINGS
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedures: DAC to Modulator Interface Network
      3. 9.2.3 Application Curves: DAC34H84 with TRF3722 Modulator Performance
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • IQ Modulator with Integrated PLL and VCO
  • Integer-N/Fractional-N PLL
  • Modulator Supports 400 MHz to 4200 MHz
  • PLL and VCO Supports 280 MHz to 4100 MHz
  • OIP3 at 900 MHz = 31 dBm
  • OIP3 at 1800 MHz = 30 dBm
  • VCO 1800-MHz Open Loop Phase Noise = –141 dBc/Hz at 1 MHz Offset
  • Independent LO Output Supports divide-by 1/2/4/8
  • Modulator Low Power and High Gain Modes
  • Multiple Power Down Modes

2 Applications

  • Wireless Infrastructure
    • CDMA: IS95, UMTS, CDMA2000, TD-SCDMA
    • LTE, TD-LTE, LTE Advanced
    • TDMA: GSM, EDGE, MC-GSM
  • Point-to-Point Microwave, Point-to-Multipoint Microwave
  • Software Defined Radios
  • RF Repeaters, Distributed Antenna Systems

3 Description

The TRF3722 is a high performance direct conversion quadrature modulator with exceptional linearity and low noise performance. The typical
0.25-V baseband common mode voltage supports seamless interface with current source DACs. The device integrates the PLL and VCO to provide the local oscillator (LO) to the modulator. The PLL and VCO provides excellent phase noise performance to satisfy the most stringent transmit communication requirements. The device also provides additional LO output for driving a second modulator or down converting mixer. The modulator features a high gain mode for a typical 3-dB gain increase and a low power mode when power optimization is desired.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TRF3722 VQFN (48) 7.00 mm x 7.00 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Block Diagram

TRF3722 fbd_slws245.gif