ESW5221 27MHz FM/FSK Transmitter Product Specification DOC. VERSION 1.0 ELAN MICROELECTRONICS CORP. June 2008 Trademark Acknowledgments: IBM is a registered trademark and PS/2 is a trademark of IBM. Windows is a trademark of Microsoft Corporation. ELAN and ELAN logo are trademarks of ELAN Microelectronics Corporation. Copyright © 2008 by ELAN Microelectronics Corporation All Rights Reserved Printed in Taiwan The contents of this specification are subject to change without further notice. ELAN Microelectronics assumes no responsibility concerning the accuracy, adequacy, or completeness of this specification. ELAN Microelectronics makes no commitment to update, or to keep current the information and material contained in this specification. Such information and material may change to conform to each confirmed order. In no event shall ELAN Microelectronics be made responsible for any claims attributed to errors, omissions, or other inaccuracies in the information or material contained in this specification. ELAN Microelectronics shall not be liable for direct, indirect, special incidental, or consequential damages arising from the use of such information or material. The software (if any) described in this specification is furnished under a license or nondisclosure agreement, and may be used or copied only in accordance with the terms of such agreement. ELAN Microelectronics products are not intended for use in life support appliances, devices, or systems. Use of ELAN Microelectronics product in such applications is not supported and is prohibited. NO PART OF THIS SPECIFICATION MAY BE REPRODUCED OR TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE EXPRESSED WRITTEN PERMISSION OF ELAN MICROELECTRONICS. ELAN MICROELECTRONICS CORPORATION Headquarters: Hong Kong: USA: No. 12, Innovation Road 1 Hsinchu Science Park Hsinchu, TAIWAN 308 Tel: +886 3 563-9977 Fax: +886 3 563-9966 http://www.emc.com.tw Elan (HK) Microelectronics Corporation, Ltd. Flat A, 19F., World Tech Centre 95 How Ming Street, Kwun Tong Kowloon, HONG KONG Tel: +852 2723-3376 Fax: +852 2723-7780 Elan Information Technology Group (U.S.A.) Shenzhen: Shanghai: Elan Microelectronics Shenzhen, Ltd. Elan Microelectronics Shanghai, Ltd. 3F, SSMEC Bldg., Gaoxin S. Ave. I Shenzhen Hi-tech Industrial Park (South Area), Shenzhen CHINA 518057 Tel: +86 755 2601-0565 Fax: +86 755 2601-0500 [email protected] #23, Zone 115, Lane 572, Bibo Rd. Zhangjiang Hi-Tech Park Shanghai, CHINA 201203 Tel: +86 21 5080-3866 Fax: +86 21 5080-4600 [email protected] P.O. Box 601 Cupertino, CA 95015 U.S.A. Tel: +1 408 366-8225 Fax: +1 408 366-8225 Contents Contents 2 Feature Description ............................................................................................ 1 3 Application .......................................................................................................... 1 4 Block Diagram..................................................................................................... 1 5 Pin Configuration................................................................................................ 2 5.1 5.2 Pin Assignment .......................................................................................................................2 Pin Descriptions ......................................................................................................................2 6 Function Description .......................................................................................... 3 6.1 6.2 6.3 6.3.1 6.4 6.5 VCO ........................................................................................................................................3 PLL..........................................................................................................................................3 D0 – D3/CHCLK......................................................................................................................3 VCO Frequency and Divider Ratio .............................................................. 3 TX Output Driver .....................................................................................................................4 Channel Clock Timing.............................................................................................................4 6.5.1 Timing Diagram ...........................................................................................................4 6.5.2 Channel Clock Timing .................................................................................................4 7 Absolute Operation Maximum Ratings ............................................................. 5 8 DC/AC Electrical Characteristic......................................................................... 5 9 Application Circuit .............................................................................................. 6 10 Components List................................................................................................. 7 11 Packaging Reference.......................................................................................... 8 12 Transmitter Demo Board Introduction .............................................................. 9 12.1 Top View.................................................................................................................................9 12.2 Bottom View .........................................................................................................................10 Product Specification (V1.0) 06.06.2008 • iii Contents Specification Revision History Version 1.0 iv • Revision Description Initial Release Edition Date 2000/06/06 Product Specification (V1.0) 06.06.2008 ESW5221 27MHz FM/FSK Transmitter 1 Introduction The ESW5221 single-chip solution is an integrated circuit intended for use as a low cost FSK transmitter to establish a frequency-agile RF link. The device is designed to provide a 10-channel transmitter and intended for linear (FM) or digital (FSK) modulated applications in the wireless Mouse and Keyboard. The single chip transmitter operates down to 2.2V minimum and is expressly designed for low power consumption. It offers synthesizer with a typical channel spacing of approximately 30KHz to allow narrow-band applications. 2 3 4 Feature Description Single-Chip RF Transmitter Include oscillation circuit with external X-TAL. On-Chip Phase-Locked Loop (PLL) Power Down mode 2.2 to 5.0V supply range Application Wireless Mouse Wireless Keyboard Wireless Communication Products Block Diagram Figure 4-1 ESW5221 Block Diagram Product Specification (V1.0) 06.06.2008 (This specification is subject to change without further notice) • 1 ESW5221 27MHz FM/FSK Transmitter 5 Pin Configuration 5.1 Pin Assignment CHCLK D3 VDD2 D2 VCO1 D1 VCO2 D0 GND2 ENB CPO GND GND1 TXO VDD1 XTAL Figure 5-1 ESW5221 SOP-16L (150mil) Package 5.2 Pin Descriptions Pin No. Pin Name Description 2,9 VDD1 VDD2 VDD is supply to this pin. A 0.1μF de-coupling capacitor should be connected as close as possible from this pin to ground. 5,7,11 GND1 GND This pin should be a low inductance, direct connection to ground. GND2 2 • 6 CPO Phase detector output, connected to external low pass filter. 1 CHCLK 12 ENB Active Low, enable input. 8 XTAL Crystal (4MHz) Connection Input. 10 TXO RF power output 3 VCO1 For external LC tank 4 VCO2 For external LC tank 13 D0 The channel selected pin. The CHCLK pin connects to ground. 14 D1 The channel selected pin. The CHCLK pin connects to ground. 15 D2 The channel selected pin. The CHCLK pin connects to ground. 16 D3 The channel selected pin. The CHCLK pin connects to ground. Clock input for channel selection when all parallel BCD (D0~D3) input are left open or connected to ground. Product Specification (V1.0) 06.06.2008 (This specification is subject to change without further notice) ESW5221 27MHz FM/FSK Transmitter 6 Function Description The ESW5221 single-chip solution is a CMOS technology integrated circuit intended for low cost FSK transmitter application and to establish a frequency-agile RF link. The device is capable of providing 10-channel transmitter. 6.1 VCO The circuit employed an LC-tank structure to achieve low-phase noise characteristic where “L” is an off-chip high-Q inductor, and “C” is provided by a varactor with different tuning ranges and converting baseband data. 6.2 PLL The PLL includes 64/65 prescaler, charge pump, PFD, N-A swallow counters, and R-counter for the multi-channel applications. The channels, selected via mechanical switches of parallel BCD input or as provided by Pin 1, can be easily set by an input pin CHCLK which directly selects the ROM table addresses. 6.3 D0 – D3/CHCLK These input pins provide the BCD code for selecting one of the ten channels to be locked in both transmit and receive loop. When the address data other than 1 – 10, are input, the decoding logic defaults to Channel 10. The frequency assignments with reference to CHCLK, connect to ground and D0 – D3 inputs, as shown in the following table, have internal pull up devices. 6.3.1 VCO Frequency and Divider Ratio Oscillator Frequency 4.0MHz, Ref. Divider 800 Channel VCO Frequency TXO Frequency TX Divider (5.0KHz Ref) Input D3 D2 D1 D0 1 26.985MHz 26.985MHz 5397 0 0 0 1 2 27.015 MHz 27.015 MHz 5403 0 0 1 0 3 27.045 MHz 27.045 MHz 5409 0 0 1 1 4 27.075MHz 27.075MHz 5415 0 1 0 0 5 27.105 MHz 27.105 MHz 5421 0 1 0 1 6 27.135 MHz 27.135 MHz 5427 0 1 1 0 7 27.165 MHz 27.165 MHz 5433 0 1 1 1 8 27.195 MHz 27.195 MHz 5439 1 0 0 0 9 27.225MHz 27.225MHz 5445 1 0 0 1 10 27.255MHz 27.255MHz 5451 1 0 1 0 - 27.255MHz 27.255MHz 5451 1 0 1 1 - 27.255MHz 27.255MHz 5451 1 1 0 0 - 27.255MHz 27.255MHz 5451 1 1 0 1 - 27.255MHz 27.255MHz 5451 1 1 1 0 NOTE: Product Specification (V1.0) 06.06.2008 (This specification is subject to change without further notice) 1: open; 0: ground • 3 ESW5221 27MHz FM/FSK Transmitter When all parallel BCD inputs are left open or connected to ground, the channel is set by clock rising edge at Pin 1 (CHCLK) of MCU. The initial or default channel at power on (internal power on reset) is set at Channel 10. 6.4 TX Output Driver The TX output driver includes a pre-driver and an open-drain output stage. The off-chip loading network can be a parallel RLC tuned resonant circuit which delivers a maximum of 0dBm output to the load at 3V supply. 6.5 Channel Clock Timing 6.5.1 Timing Diagram Channel DATA by FDIVIDER Clock Figure 6-1 ESW5221 Timing Diagram 6.5.2 Channel Clock Timing The channel clock tolerance of the CHCLK signal should be within ± 150µS. 4 • Channel CHCLK Channel CHCLK 1 600µS 6 3.6mS 2 1.2mS 7 4.2mS 3 1.8mS 8 4.8mS 4 2.4mS 9 5.4mS 5 3.0mS 10 6.0mS Product Specification (V1.0) 06.06.2008 (This specification is subject to change without further notice) ESW5221 27MHz FM/FSK Transmitter 7 Absolute Operation Maximum Ratings Rating 8 Symbol Value Unit DC Supply Voltage VDD – 0 .3 to 5.5 V Input Voltage Vin – 0 .5 to VDD+0.5 V Operating Temperature Range Ta 0 to 70 °C DC/AC Electrical Characteristic (VDD=3.0V VSS=0V) Parameter Min. Typical Max. Unit 2.2 3.0 5.0 V 10 mA µA Overall Operating Voltage Current Consumption: VCO + TX Buffer + PLL Power Down Mode 8 Frequency Deviation 3 KHz 0 dBm Transmitter Section RF power output @50Ω -3 RF Output Spurious Suppression -30 dBc PLL Section PLL Operating Frequency 27 MHz OSC Operating Frequency 4 MHz -90 -100 dBc/Hz 0.8 MHz/V VCO phase noise: 100KHz offset 1MHz offset VCO Sensitivity Output rise time 200 ns Output fall time 200 ns CHCLK Input rise time 10 µs Input fall time 10 µs BCD Input Pull up resistance Product Specification (V1.0) 06.06.2008 (This specification is subject to change without further notice) 300 KΩ • 5 ESW5221 27MHz FM/FSK Transmitter 9 Application Circuit * ENB: “Low” for Operating Mode / “High” for Idle Mode Figure 9-1 ESW5221 Application Circuit 6 • Product Specification (V1.0) 06.06.2008 (This specification is subject to change without further notice) ESW5221 27MHz FM/FSK Transmitter 10 Components List Item Part Type Designators 1 Variable Capacitor 20P VC 2 C.F Resistor 1KΩ R6, R9. 3 C.F Resistor 39KΩ R3. 4 C.F Resistor 22KΩ R5. 5 C.F Resistor 100KΩ R4. 6 Ceramic Capacitor 33P NPO C5. 7 Ceramic Capacitor 120P NPO C4.C9.C10 8 Ceramic Capacitor 150P NPO C8. 9 Ceramic Capacitor 102 X7R C3. 10 Ceramic Capacitor 4n7 X7R C2 11 Ceramic Capacitor 0.15UF(154) C1. 12 Ceramic Capacitor 0.1UF(104) C12. 13 Electrolytic Capacitor 100u 6.3V C13. 14 Variable diodes 1SV270 D1. Toshiba 15 Inductor 390nH L2. King core or WALSIN 16 Inductor 820nH L1. King core or WALSIN 17 Crystal 4M30P1 49US Y1. 18 Dip Switch 4P SW1. 19 ESW5221 U1 Product Specification (V1.0) 06.06.2008 (This specification is subject to change without further notice) Manufacture Remark ELAN • 7 ESW5221 27MHz FM/FSK Transmitter 11 Packaging Reference Dimension: mm Figure 11-1 ESW5221 SOP Packaging Dimensions 8 • Product Specification (V1.0) 06.06.2008 (This specification is subject to change without further notice) ESW5221 27MHz FM/FSK Transmitter 12 Transmitter Demo Board Introduction 12.1 Top View Antenna CPO (TPV) Crystal Variable Capacitor (VC) Channel Select (D0~D3): Up: Ground (0) Down: Open (1) 6-Pin Connector Figure 12-1 ESW5221 TX Board (Top View) NOTE 1. CPO: When Channel-10 is selected, adjust VC until the TPV is at 2 Voltage. 2. ENB: Should be Active Low in order to enable input. Product Specification (V1.0) 06.06.2008 (This specification is subject to change without further notice) • 9 ESW5221 27MHz FM/FSK Transmitter 12.2 Bottom View ESW5221 Chip 25mm 25mm Figure 12-2 ESW5221 TX Board (Bottom View) 10 • Product Specification (V1.0) 06.06.2008 (This specification is subject to change without further notice)