Related Manuals for Texas Instruments WL1835MODCOM8A
Summary of Contents for Texas Instruments WL1835MODCOM8A
- Page 1 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI Sitara™ Platform User's Guide Literature Number: SWRU359A September 2013 – Revised October 2013...
- Page 2 Antenna Characteristics ......................Radio Pattern ........................Circuit Design ....................... Schematic ....................Bill of Materials (BOM) ......................Layout Guidelines ......................Board Layout Table of Contents SWRU359A – September 2013 – Revised October 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
- Page 3 SWRU359A – September 2013 – Revised October 2013 Read This First About This Manual This user's guide describes how to use the TI WL1835MODCOM8A board to evaluate the performance of the TI WL1835MODGA module. Related Documentation From Texas Instruments •...
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Page 4: Introduction
Direct connection to battery using external switching mode power supply supporting 4.8-V to 2.9-V operation • VIO in the 1.8-V domain WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A – September 2013 – Revised October 2013 Sitara™ Platform Submit Documentation Feedback... -
Page 5: Ti Module Key Benefits
Android™ Reference Platform Accelerates Customer Development and Time to ® Market SWRU359A – September 2013 – Revised October 2013 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI Sitara™ Platform Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 6: Board Pin Assignment
Board Pin Assignment Figure 2. Board Top View Figure 3. Board Bottom View WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A – September 2013 – Revised October 2013 Sitara™ Platform Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 7: Pin Descriptions
No connection N.C. No connection N.C. No connection N.C. No connection Ground SWRU359A – September 2013 – Revised October 2013 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI Sitara™ Platform Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... - Page 8 BT_WAKE_UP Bluetooth wakeup from host N.C. No connection Ground GPIO11 General-purpose I/O WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A – September 2013 – Revised October 2013 Sitara™ Platform Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
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Page 9: Electrical Characteristics
VSWR Figure 4 shows the antenna VSWR. Figure 4. Antenna VSWR SWRU359A – September 2013 – Revised October 2013 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI Sitara™ Platform Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 10: Antenna Characteristics
Radio Pattern Figure 6 shows the radio pattern of the WL1835MODCOM8A device. Figure 6. WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A – September 2013 – Revised October 2013 Sitara™ Platform Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 11: Antenna Characteristics
ANT1 polarization of the WL1835MODCOM8A device. Figure 7. Figure 8. SWRU359A – September 2013 – Revised October 2013 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI Sitara™ Platform Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... - Page 12 ANT2 Figure 10 shows the ANT2 polarization of the WL1835MODCOM8A device. Figure 10. WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A – September 2013 – Revised October 2013 Sitara™ Platform Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
- Page 13 Antenna Characteristics www.ti.com Figure 11. Figure 12. SWRU359A – September 2013 – Revised October 2013 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI Sitara™ Platform Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
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Page 14: Circuit Design
0402 0402 0402 0402 U.FL-R-SMT(10) U.FL-R-SMT(10) U.FL U.FL Figure 13. Schematic WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A – September 2013 – Revised October 2013 Sitara™ Platform Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 15: Bill Of Materials (Bom
R29, R30, R31, R32 RES 0402 / 10K / ±5% WR04X103 JTL SWRU359A – September 2013 – Revised October 2013 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI Sitara™ Platform Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 16: Layout Guidelines
Figure 19 show instances of good layout practices. Figure 14. Layer 1 Figure 15. Layer 2 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A – September 2013 – Revised October 2013 Sitara™ Platform Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... - Page 17 Signal traces can be run on a third layer under the solid ground layer, which is below the module mounting layer. SWRU359A – September 2013 – Revised October 2013 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI Sitara™ Platform Submit Documentation Feedback...
- Page 18 PCB. A 50- Ω impedance match on the trace to the antenna Figure 20 should be used. Also, 50- Ω traces are recommended for the PCB layout. WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A – September 2013 – Revised October 2013 Sitara™ Platform Submit Documentation Feedback Copyright ©...
- Page 19 The proximity of the antenna to the enclosure and the enclosure material must also be considered. SWRU359A – September 2013 – Revised October 2013 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI Sitara™ Platform Submit Documentation Feedback...
- Page 20 Figure 22. Top Layer – Antenna and RF Trace Routing Layout Guidelines Figure 23. Bottom Layer – Antenna and RF Trace Routing Layout Guidelines WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI SWRU359A – September 2013 – Revised October 2013 Sitara™...
- Page 21 SDIO Clock, PCM clock… These digital clock signals are a source of noise. Keep the traces of these signals as short as possible. Whenever possible, maintain a clearance around them. SWRU359A – September 2013 – Revised October 2013 WL1835MODCOM8A WLAN MIMO and BT Module Evaluation Board for TI Sitara™ Platform Submit Documentation Feedback...
- Page 22 SWRS359A October 2013 WL1835MODCOM8 to WL1835MODCOM8A. NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Revision History SWRU359A – September 2013 – Revised October 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...