SNAS739D June   2018  – May 2020 LMX2615-SP

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      Simplified Schematic
  4. Revision History
  5. Pin Configuration and Functions
    1.     Pin Functions
      1.      CQFP Package (QFN) Pin Functions
  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 Timing Requirements
    7. 6.7 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Reference Oscillator Input
      2. 7.3.2  Reference Path
        1. 7.3.2.1 OSCin Doubler (OSC_2X)
        2. 7.3.2.2 Pre-R Divider (PLL_R_PRE)
        3. 7.3.2.3 Post-R Divider (PLL_R)
      3. 7.3.3  State Machine Clock
      4. 7.3.4  PLL Phase Detector and Charge Pump
      5. 7.3.5  N Divider and Fractional Circuitry
      6. 7.3.6  MUXout Pin
        1. 7.3.6.1 Serial Data Output for Readback
        2. 7.3.6.2 Lock Detect Indicator Set as Type “VCOCal”
        3. 7.3.6.3 Lock Detect Indicator Set as Type “Vtune and VCOCal”
      7. 7.3.7  VCO (Voltage-Controlled Oscillator)
        1. 7.3.7.1 VCO Calibration
        2. 7.3.7.2 Watchdog Feature
        3. 7.3.7.3 RECAL Feature
        4. 7.3.7.4 Determining the VCO Gain
      8. 7.3.8  Channel Divider
      9. 7.3.9  Output Buffer
      10. 7.3.10 Powerdown Modes
      11. 7.3.11 Treatment of Unused Pins
      12. 7.3.12 Phase Synchronization
        1. 7.3.12.1 General Concept
        2. 7.3.12.2 Categories of Applications for SYNC
        3. 7.3.12.3 Procedure for Using SYNC
        4. 7.3.12.4 SYNC Input Pin
      13. 7.3.13 Phase Adjust
      14. 7.3.14 Fine Adjustments for Phase Adjust and Phase SYNC
      15. 7.3.15 SYSREF
        1. 7.3.15.1 Programmable Fields
        2. 7.3.15.2 Input and Output Pin Formats
          1. 7.3.15.2.1 SYSREF Output Format
        3. 7.3.15.3 Examples
        4. 7.3.15.4 SYSREF Procedure
      16. 7.3.16 Pin Modes
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 Recommended Initial Power-Up Sequence
      2. 7.5.2 Recommended Sequence for Changing Frequencies
    6. 7.6 Register Maps
      1. 7.6.1 Register Map
        1. 7.6.1.1  R0 Register (Offset = 0x0) [reset = X]
          1. Table 22. R0 Register Field Descriptions
        2. 7.6.1.2  R1 Register (Offset = 0x1) [reset = 0x4]
          1. Table 23. R1 Register Field Descriptions
        3. 7.6.1.3  R8 Register (Offset = 0x8) [reset = X]
          1. Table 24. R8 Register Field Descriptions
        4. 7.6.1.4  R9 Register (Offset = 0x9) [reset = X]
          1. Table 25. R9 Register Field Descriptions
        5. 7.6.1.5  R11 Register (Offset = 0xB) [reset = 0x10]
          1. Table 26. R11 Register Field Descriptions
        6. 7.6.1.6  R12 Register (Offset = 0xC) [reset = 0x1]
          1. Table 27. R12 Register Field Descriptions
        7. 7.6.1.7  R14 Register (Offset = 0xE) [reset = 0x70]
          1. Table 28. R14 Register Field Descriptions
        8. 7.6.1.8  R16 Register (Offset = 0x10) [reset = 0x80]
          1. Table 29. R16 Register Field Descriptions
        9. 7.6.1.9  R19 Register (Offset = 0x13) [reset = 0xB7]
          1. Table 30. R19 Register Field Descriptions
        10. 7.6.1.10 R20 Register (Offset = 0x14) [reset = X]
          1. Table 31. R20 Register Field Descriptions
        11. 7.6.1.11 R31 Register (Offset = 0x1F) [reset = X]
          1. Table 32. R31 Register Field Descriptions
        12. 7.6.1.12 R34 Register (Offset = 0x22) [reset = 0x0]
          1. Table 33. R34 Register Field Descriptions
        13. 7.6.1.13 R36 Register (Offset = 0x24) [reset = 0x46]
          1. Table 34. R36 Register Field Descriptions
        14. 7.6.1.14 R37 Register (Offset = 0x25) [reset = 0x400]
          1. Table 35. R37 Register Field Descriptions
        15. 7.6.1.15 R38 Register (Offset = 0x26) [reset = 0xFD51]
          1. Table 36. R38 Register Field Descriptions
        16. 7.6.1.16 R39 Register (Offset = 0x27) [reset = 0xDA80]
          1. Table 37. R39 Register Field Descriptions
        17. 7.6.1.17 R40 Register (Offset = 0x28) [reset = 0x0]
          1. Table 38. R40 Register Field Descriptions
        18. 7.6.1.18 R41 Register (Offset = 0x29) [reset = 0x0]
          1. Table 39. R41 Register Field Descriptions
        19. 7.6.1.19 R42 Register (Offset = 0x2A) [reset = 0x0]
          1. Table 40. R42 Register Field Descriptions
        20. 7.6.1.20 R43 Register (Offset = 0x2B) [reset = 0x0]
          1. Table 41. R43 Register Field Descriptions
        21. 7.6.1.21 R44 Register (Offset = 0x2C) [reset = 0x1FA3]
          1. Table 42. R44 Register Field Descriptions
        22. 7.6.1.22 R45 Register (Offset = 0x2D) [reset = X]
          1. Table 43. R45 Register Field Descriptions
        23. 7.6.1.23 R46 Register (Offset = 0x2E) [reset = 0x1]
          1. Table 44. R46 Register Field Descriptions
        24. 7.6.1.24 R58 Register (Offset = 0x3A) [reset = X]
          1. Table 45. R58 Register Field Descriptions
        25. 7.6.1.25 R59 Register (Offset = 0x3B) [reset = 0x1]
          1. Table 46. R59 Register Field Descriptions
        26. 7.6.1.26 R60 Register (Offset = 0x3C) [reset = 0x9C4]
          1. Table 47. R60 Register Field Descriptions
        27. 7.6.1.27 R69 Register (Offset = 0x45) [reset = 0x0]
          1. Table 48. R69 Register Field Descriptions
        28. 7.6.1.28 R70 Register (Offset = 0x46) [reset = 0xC350]
          1. Table 49. R70 Register Field Descriptions
        29. 7.6.1.29 R71 Register (Offset = 0x47) [reset = 0x80]
          1. Table 50. R71 Register Field Descriptions
        30. 7.6.1.30 R72 Register (Offset = 0x48) [reset = 0x1]
          1. Table 51. R72 Register Field Descriptions
        31. 7.6.1.31 R73 Register (Offset = 0x49) [reset = 0x3F]
          1. Table 52. R73 Register Field Descriptions
        32. 7.6.1.32 R74 Register (Offset = 0x4A) [reset = 0x0]
          1. Table 53. R74 Register Field Descriptions
        33. 7.6.1.33 R75 Register (Offset = 0x4B) [reset = 0x0]
          1. Table 54. R75 Register Field Descriptions
        34. 7.6.1.34 R110 Register (Offset = 0x6E) [reset = 0x0]
          1. Table 55. R110 Register Field Descriptions
        35. 7.6.1.35 R111 Register (Offset = 0x6F) [reset = 0x0]
          1. Table 56. R111 Register Field Descriptions
        36. 7.6.1.36 R112 Register (Offset = 0x70) [reset = 0x0]
          1. Table 57. R112 Register Field Descriptions
        37. 7.6.1.37 R113 Register (Offset = 0x71) [reset = 0x0]
          1. Table 58. R113 Register Field Descriptions
        38. 7.6.1.38 R114 Register (Offset = 0x72) [reset = 0x26F]
          1. Table 59. R114 Register Field Descriptions
  8. Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 OSCin Configuration
      2. 8.1.2 OSCin Slew Rate
      3. 8.1.3 RF Output Buffer Power Control
      4. 8.1.4 RF Output Buffer Pullup
        1. 8.1.4.1 Resistor Pullup
        2. 8.1.4.2 Inductor Pullup
        3. 8.1.4.3 Combination Pullup
      5. 8.1.5 RF Output Treatment for the Complimentary Side
        1. 8.1.5.1 Single-Ended Termination of Unused Output
        2. 8.1.5.2 Differential Termination
    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. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Footprint Example on PCB Layout
    4. 10.4 Radiation Environments
      1. 10.4.1 Total Ionizing Dose
      2. 10.4.2 Single Event Effect
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Engineering Samples
    2. 12.2 Package Mechanical Information

Package Options

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

Electrical Characteristics

3.2 V ≤ VCC ≤ 3.45 V, –55°C ≤ TC ≤ +125°C. Typical values are at VCC = 3.3 V, 25°C (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
POWER SUPPLY
VCC Supply voltage 3.2 3.3 3.45 V
ICC Supply current OUTA_PD = 0, OUTB_PD = 1
OUTA_MUX = OUTB_MUX = 1
OUTA_PWR = 31, CPG = 7
fOSC = fPD = 100 MHz, fVCO = fOUT = 14.5 GHz
360 mA
Power on reset current RESET = 1 289
Power down current POWERDOWN = 1 6
OUTPUT CHARACTERISTICS
pOUT Single-ended output power(2)(4) 50-Ω resistor pullup
OUTx_PWR = 31
fOUT = 8 GHz 6 dBm
fOUT = 15 GHz 4
INPUT SIGNAL PATH
fOSCin Reference input frequency OSC_2X = 0 5 1000 MHz
OSC_2X = 1 5 200
vOSCin Reference input voltage Single-ended AC coupled sine wave input with complementary side AC coupled to ground with 50 Ω resistor fOSCin ≥ 20 MHz 0.4 2 VPP
10 MHz ≤ fOSCin < 20 MHz 0.8 2
5 MHz ≤ fOSCin < 10 MHz 1.6 2
PHASE DETECTOR AND CHARGE PUMP
fPD Phase detector frequency(1) MASH_ORDER = 0 0.125 250 MHz
MASH_ORDER > 0 5 200
ICPout Charge-pump leakage current CPG = 0 15 nA
Effective charge pump current. This is the sum of the up and down currents CPG = 4 3 mA
CPG = 1 6
CPG = 5 9
CPG = 3 12
CPG = 7 15
PNPLL_1/f Normalized PLL 1/f noise fPD = 100 MHz, fVCO = 12 GHz(3) –129 dBc/Hz
PNPLL_FOM Normalized PLL noise floor –236 dBc/Hz
VCO CHARACTERISTICS
fVCO VCO frequency 7600 15200 MHz
PNVCO VCO phase noise VCO1
fVCO = 8.1 GHz
100 kHz −105 dBc/Hz
1 MHz −127
10 MHz −148
100 MHz −155
VCO2
fVCO = 9.3 GHz
100 kHz −103
1 MHz −125
10 MHz −146
100 MHz −153
VCO3
fVCO = 10.4 GHz
100 kHz −103
1 MHz −125
10 MHz −147
100 MHz −158
VCO4
fVCO = 11.4 GHz
100 kHz −101
1 MHz −124
10 MHz −146
100 MHz −158
VCO5
fVCO = 12.5 GHz
100 kHz −102
1 MHz −126
10 MHz −147
100 MHz −156
VCO6
fVCO = 13.6 GHz
100 kHz −101
1 MHz −124
10 MHz −146
100 MHz −160
VCO7
fVCO = 14.7 GHz
100 kHz −101
1 MHz −124
10 MHz −146
100 MHz −157
tVCOCAL VCO calibration time, switch across the entire frequency band, fOSC = 100 MHz, fPD = 100 MHz, fVCO = 7.9 GHz, VCO_SEL = 7 Partial assist 650 µs
KVCO VCO Gain 8.1 GHz 94 MHz/V
9.3 GHz 106
10.4 GHz 122
11.4 GHz 148
12.5 GHz 185
13.6 GHz 202
14.7 GHz 233
|ΔTCL| Allowable temperature drift when VCO is not re-calibrated 125 °C
H2 VCO second harmonic fVCO = 8 GHz, divider disabled –30 dBc
H3 VCO third harmonic fVCO = 8 GHz, divider disabled −25
DIGITAL INTERFACE (Applies to SCK, SDI, CSB, CAL, RECAL_EN, MUXout, SYNC, SysRefReq)
VIH High-level input voltage 1.6 V
VIL Low-level input voltage 0.4 V
IIH High-level input current –100 100 µA
IIL Low-level input current –100 100 µA
VOH High-level output voltage MUXout pin Load current = –5 mA VCC – 0.6 V
VOL Low-level output voltage Load current = 5 mA 0.6 V
For lower VCO frequencies, the N divider minimum value canlimit the phase-detector frequency.
Single ended output power obtained after de-embeddingmicrostrip trace losses and matching with a manual tuner. Unused port terminated to 50-Ωload.
The PLL noise contribution is measured using a clean referenceand a wide loop bandwidth and is composed into flicker and flat components. PLL_flat = PLL_FOM + 20× log(Fvco/Fpd) + 10 × log(Fpd / 1Hz). PLL_flicker (offset) = PLL_1/f + 20 × log(Fvco / 1GHz) – 10× log(offset / 10kHz). Once these two components are found, the total PLL noise can be calculatedas PLL_Noise = 10 × log(10 PLL_Flat / 10 + 10 PLL_flicker /10 )
Output power, spurs, and harmonics can vary based on boardlayout and components.