SNAU182A March   2021  – May 2022

 

  1.   Trademarks
  2. 1LMX2571EPEVM Evaluation Module
    1. 1.1 Evaluation Module Contents
    2. 1.2 Evaluation Setup Requirement
    3. 1.3 Resources
  3. 2Setup
    1. 2.1 Connection Diagram
    2. 2.2 Power Supply
    3. 2.3 Reference Clock
    4. 2.4 RF Output
    5. 2.5 Programming
    6. 2.6 Evaluation Software
    7. 2.7 EVM Strap Options
      1. 2.7.1 J11 Header
      2. 2.7.2 J12 Header
  4. 3Typical Measurement
    1. 3.1 Default Configuration
      1. 3.1.1 Loop Filter
      2. 3.1.2 Typical Output
    2. 3.2 Additional Tests
      1. 3.2.1 FSK Modulation
      2. 3.2.2 Register Readback
  5. 4Schematic
  6. 5Board Construction
    1. 5.1 PCB Layer Stack-Up
    2. 5.2 PCB Layout
  7. 6Bill of Materials
  8. 7Troubleshooting Guide
  9.   A Using Different Reference Clock
  10.   B Reference PRO
    1.     B.1 Output Frequency Selection
    2.     B.2 Output Format Selection
    3.     B.3 Typical Output Characteristics
    4.     B.4 Firmware Update
  11.   C Revision History

6 Bill of Materials

Table 6-1 LMX2571EPEVM Bill of Materials
DESIGNATOR QTY DESCRIPTION PART NUMBER MANUFACTURER
C1 1 CAP, CERM, 2.2 µF, 10 V, +/- 10%, X5R, 0603 C0603C225K8PACTU Kemet
C1LF 1 CAP, CERM, 390 pF, 50 V, +/- 5%, C0G/NP0, 0603 C0603C391J5GACTU Kemet
C2, C3, C4, C5, C6, C8, C11, C23, C25 9 CAP, CERM, 0.1 µF, 16 V, +/- 10%, X7R, 0603 885012206046 Wurth Elektronik
C2LF 1 CAP, CERM, 4700 pF, 50 V, +/- 10%, X7R, 0603 885012206087 Wurth Elektronik
C7, C9, C10, C24, C26 5 CAP, CERM, 1 µF, 16 V, +/- 10%, X7R, 0603 885012206052 Wurth Elektronik
C14, C17 2 CAP, CERM, 1000 pF, 50 V,+/- 10%, X7R, 0603 885012206083 Wurth Elektronik
D1 1 LED, Green, SMD LTST-C190GKT Lite-On
J1, J2, J4 3 Connector, End launch SMA, 50 ohm, SMT 142-0701-851 Cinch Connectivity
J7 1 Header (shrouded), 100mil, 5x2, Gold, SMT 52601-S10-8LF FCI
J8 1 Header, 100mil, 4x2, Gold, SMT 0015910080 Molex
J9 1 Header, 100mil, 2x1, Gold, TH TSW-102-07-G-S Samtec
J11, J12 2 Header, 100mil, 3x1, Gold, TH TSW-103-07-G-S Samtec
R1, R2, R3, R5, R6, R7, R8, R20, R21 9 RES, 0, 5%, 0.1 W, AEC-Q200 Grade 0, 0603 CRCW06030000Z0EA Vishay-Dale
R2LF 1 RES, 680, 5%, 0.1 W, AEC-Q200 Grade 0, 0603 CRCW0603680RJNEA Vishay-Dale
R4, R10, R11, R13, R14 5 RES, 330, 5%, 0.1 W, AEC-Q200 Grade 0, 0603 CRCW0603330RJNEA Vishay-Dale
R9, R12 2 RES, 18, 5%, 0.1 W, AEC-Q200 Grade 0, 0603 CRCW060318R0JNEA Vishay-Dale
R26 1 RES, 49.9, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 CRCW060349R9FKEA Vishay-Dale
R28, R29, R30, R31, R32, R33, R34, R35, R36, R37, R38 11 RES, 33, 5%, 0.1 W, AEC-Q200 Grade 0, 0603 CRCW060333R0JNEA Vishay-Dale
U1 1 LMX2571-EP Low Power Synthesizer with FSK Modulation LMX2571-EP Texas Instruments