AN599 Si4010 ARIB STD T- 93 TEST R ESULTS ( 3 1 5 M H Z ) 1. Introduction This document provides Si4010 ARIB STD T-93 test results when operating in the 315 MHz frequency band. The results demonstrate full compliance under the ARIB STD T-93. All tests are performed using a 4010-DKPB434-BS with a matching network modified for 315 MHz. The results can be duplicated by using the same configuration. Two kinds of test signals were used for testing: OOK mode with 4.8 kbps data rate and FSK mode with 100 kbps data rate and 50 kHz frequency deviation. All settings were used directly from the Excel Register Calculator for Si4010, version si4010_calc_regs_100830.xls. The latest version of the calculator is available on the Silicon Labs website. For measurement results with different RF parameters, contact customer support. 2. Relevant Measurements Limits ARIB STD T-93 standard only pertains to radiated power, frequency tolerance, occupied bandwidth and unwanted emission measurements. Limits for these tests are shown below in the Test Results section “4.2. Test Items and Results” . 3. 4010-DKPB434-BS Schematic and Layout Figures 1–5 show the modifications necessary for 315 MHz operation. Figure 1. 4010-DKPB434-BS Schematic Rev. 0.1 5/11 Copyright © 2011 by Silicon Laboratories AN599 AN599 Figure 2. 4010-DKPB434-BS Layout—Top Layer Silk Figure 3. 4010-DKPB434-BS Layout—Bottom Layer Silk 2 Rev. 0.1 AN599 Figure 4. 4010-DKPB434-BS Layout—Top Layer Routing Figure 5. 4010-DKPB434-BS Layout—Bottom Layer Routing Rev. 0.1 3 AN599 4. ARIB STD T-93 Compliance Results Silicon Labs has tested the Si4010 chip and 4010-DKPB434-BS with a 315 MHz, –6 dBm matching network test card for ARIB STD T-93 compliance. These ARIB compliance tests were performed in a conducted method by Silicon Labs. Note: Although the specification for ARIB T-93 covers radiated emissions, we show that we achieve compliance in a conducted test and so can easily meet the specification for radiated limits. This is of course dependant on antenna design and some other factors which are beyond the scope of this document and should be reviewed carefully during board design. 4.1. Test Conditions Temperature: 15–35° C Humidity: 30–60 % Atmospheric pressure: 950–1050 mbar Test voltage: DC 3 V 4.2. Test Items and Results Below are test results showing that the Si4010 passed all tests. 1. Radiated Power Limits: Radiated Power should be less than 250 µW e.i.r.p (312 to 315.25 MHz). Note: Radiated Power should be less than 250 µW e.i.r.p when the center frequency of occupied bandwidth and frequency tolerance (sum of these) ranges from 312 to 315.25 MHz. a. OOK MODE (4.8 Kbps) i. The result is –6.79 dBm, less than 250 µW; PASSED Figure 6. OOK Transmit Power 4 Rev. 0.1 AN599 b. FSK MODE (100 Kbps, 50 kHz frequency deviation) i. The result is –6.54 dBm, less than 250 µW; PASSED Figure 7. FSK Transmit Power 2. Tolerance of Radiated Power Limits: Variation from rated power is only defined for upper side as +20% (maximum). Lower side is not defined. a. Maximum radiated power variation is within the limits of +20% as seen in the results above. 3. Tolerance of Frequency Limits: The transmitted frequency should be entirely between 312 and 315.25 MHz. a. OOK mode i. Test frequency is 315.0006 MHz. It is inside the "specific band". PASSED Rev. 0.1 5 AN599 Figure 8. OOK Transmit Frequency b. FSK mode i. Tested frequency is 314.95560 MHz which is inside "specific band". PASSED Figure 9. FSK Transmitting Frequency 6 Rev. 0.1 AN599 4. Occupied Bandwidth Limits: 1 MHz (when PN9 is applied at the actual transmission speed) Note: When PN9 is not possible to use as a modulation source, it is acceptable to use actual system data as a source. a. OOK mode i. Tested OBW is 277 kHz, less than 1 MHz; PASSED Figure 10. OBW in OOK Mode b. FSK mode i. Tested OBW is 230 kHz, less than 1 MHz; PASSED Figure 11. OBW in FSK Mode Rev. 0.1 7 AN599 5. Unwanted emission (spurious emissions and out of band emissions) Limits: Less than 1 GHz: 250 nW e.i.r.p (RBW: 100 kHz) Above1 GHz: 1 µW e.i.r.p (RBW: 1 MHz) a. OOK mode i. The maximum emission below 1 GHz is –45.86 dBm, less than 250 nW; PASSED ii. The maximum emission above 1 GHz is –44.55 dBm, less than 1 µW; PASSED Figure 12. Emissions below 1 GHz in OOK Mode Figure 13. Emissions above 1 GHz in OOK Mode 8 Rev. 0.1 AN599 b. FSK mode i. The maximum emission below 1 GHz is –47.96 dBm, less than 250 nW; PASSED ii. The maximum emission above 1 GHz is –44.26 dBm, less than 25 µW; PASSED Figure 14. Emissions below 1 GHz in FSK Mode Figure 15. Emissions above 1 GHz in FSK Mode Rev. 0.1 9 AN599 CONTACT INFORMATION Silicon Laboratories Inc. 400 West Cesar Chavez Austin, TX 78701 Tel: 1+(512) 416-8500 Fax: 1+(512) 416-9669 Toll Free: 1+(877) 444-3032 Please visit the Silicon Labs Technical Support web page: https://www.silabs.com/support/pages/contacttechnicalsupport.aspx and register to submit a technical support request. The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice. Silicon Laboratories assumes no responsibility for errors and omissions, and disclaims responsibility for any consequences resulting from the use of information included herein. Additionally, Silicon Laboratories assumes no responsibility for the functioning of undescribed features or parameters. Silicon Laboratories reserves the right to make changes without further notice. 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