SNAU246A June   2020  – January 2021 LMX2820

 

  1. 1Trademarks
  2. 2LMX2820EVM Evaluation Module
    1. 2.1 Evaluation Module Contents
    2. 2.2 Evaluation Setup Requirement
    3. 2.3 Resources
  3. 3Setup
    1. 3.1 Connection Diagram
    2. 3.2 Power Supply
    3. 3.3 Reference Clock
    4. 3.4 RF Output
    5. 3.5 Programming
    6. 3.6 Evaluation Software
  4. 4Typical Measurement
    1. 4.1 Default Configuration
      1. 4.1.1 Loop Filter
      2. 4.1.2 Typical Output
    2. 4.2 Additional Tests
      1. 4.2.1 SYSREF Example
      2. 4.2.2 Offset Mixing With PFDIN Pin
      3. 4.2.3 External VCO Mode
      4. 4.2.4 Register Readback
  5. 5Schematic
  6. 6PCB Layout and Layer Stack-Up
    1. 6.1 PCB Layer Stack-Up
    2. 6.2 PCB Layout
  7. 7Bill of Materials
  8. 8Troubleshooting Guide
    1.     A Using Different Reference Clock
      1.      B USB2ANY Firmware Upgrade
        1.       C Revision History

7 Bill of Materials

Table 7-1 Bill of Materials
DESIGNATORQTYDESCRIPTIONPART NUMBERMANUFACTURER
C1LF1CAP, CERM, 470 pF, 10 V,+/- 5%, C0G/NP0, 0603885012006012Wurth Elektronik
C2, C4, C8, C12, C14, C18, C20, C23, C32, C33, C3411CAP, CERM, 0.1 µF, 16 V, +/- 10%, X5R, 0201GRM033R61C104KE84DMuRata
C2LF1CAP, CERM, 0.068 µF, 25 V,+/- 10%, X7R, 0603885012206070Wurth Elektronik
C3, C5, C9, C274CAP, CERM, 10 µF, 10 V,+/- 10%, X5R, 0603GRM188R61A106KAALDMuRata
C3LF1CAP, CERM, 2200 pF, 16 V, +/- 10%, X7R, 0603885012206036Wurth Elektronik
C10, C15, C16, C24, C355CAP, CERM, 0.1 µF, 10 V,+/- 10%, X5R, 0201530Z104KT10TAmerican Technical Ceramics
C11, C13, C17, C19, C21, C22, C25, C26, C28, C30, C3111CAP, CERM, 1 µF, 25 V, +/- 10%, X5R, 0402GRM155R61E105KA12DMuRata
C291CAP, CERM, 0.47 µF, 25 V, +/- 10%, X7R, AEC-Q200 Grade 1, 0603CGA3E3X7R1E474K080ABTDK
D11LED, Green, SMDLTST-C190GKTLite-On
J11Header, 100mil, 3x1, Gold, THTSW-103-07-G-SSamtec
J21Header (shrouded), 100mil, 5x2, Gold, SMT52601-S10-8LFFCI
J81Header, 100mil, 2x1, Gold, THTSW-102-07-G-SSamtec
J10, J11, J12, J13, J15, J16, J197JACK, SMA, 50 Ohm, Gold, Edge Mount142-0771-831Cinch Connectivity
J14, J182CONN SMA JACK STR EDGE MNTCON-SMA-EDGE-SRF Solutions Ltd.
R11RES, 1.0 k, 5%, 0.1 W, AEC-Q200 Grade 0, 0603CRCW06031K00JNEAVishay-Dale
R2, R4, R5, R6, R7, R8, R97RES, 33, 5%, 0.1 W, AEC-Q200 Grade 0, 0603CRCW060333R0JNEAVishay-Dale
R2LF1RES, 68.1, 1%, 0.1 W, AEC-Q200 Grade 0, 0603CRCW060368R1FKEAVishay-Dale
R3LF1RES, 18.2, 1%, 0.1 W, AEC-Q200 Grade 0, 0603CRCW060318R2FKEAVishay-Dale
R151RES, 330, 5%, 0.1 W, AEC-Q200 Grade 0, 0603CRCW0603330RJNEAVishay-Dale
R18, R21, R22, R23, R24, R25, R26, R27, R28, R3710RES, 0, 5%, 0.1 W, AEC-Q200 Grade 0, 0603CRCW06030000Z0EAVishay-Dale
R30, R322RES, 0, 5%, 0.05 W, 0201CRCW02010000Z0EDVishay-Dale
R31, R35, R403RES, 49.9, 1%, 0.1 W, AEC-Q200 Grade 0, 0603CRCW060349R9FKEAVishay-Dale
SH-J11Shunt, 100mil, Gold plated, BlackSNT-100-BK-GSamtec
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP99Test Point, Miniature, White, TH5002Keystone
TP111Test Point, Miniature, Black, TH5001Keystone
TP121Test Point, Miniature, Red, TH5000Keystone
U11RF SynthesizerLMX2820Texas Instruments