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ML7345  Family  LSIs  Hardware  Design  Manual 

Notes 
1)

 

The information contained herein is subject to change without notice.   

 
2)

 

Although LAPIS Semiconductor is continuously  working to improve product reliability  and quality, semiconductors can 
break  down  and  malfunction  due  to  various  factors.  Therefore,  in  order  to  prevent  personal  injury  or  fire  arising  from 
failure,    please take safety measures such as complying with the derating characteristics, implementing redundant and fire 
prevention designs, and utilizing backups and fail-safe procedures. LAPIS Semiconductor shall have no responsibility for 
any damages arising out of the use of our Products beyond the rating specified by LAPIS Semiconductor. 

 

3)

 

Examples  of  application  circuits,  circuit  constants  and  any  other  information  contained  herein  are  provided  only  to 
illustrate  the  standard  usage  and  operations  of  the  Products.The  peripheral  conditions  must  be  taken  into  account  when 
designing circuits for mass production. 

 
4)

 

The technical information specified herein is intended only to show the typical functions of the Products and examples of 
application circuits for the Products.    No license, expressly or implied, is granted hereby under any intellectual property 
rights  or  other  rights  of  LAPIS  Semiconductor  or  any  third  party  with  respect  to  the  information  contained  in  this 
document;  therefore  LAPIS  Semiconductor  shall  have  no  responsibility  whatsoever  for  any  dispute,  concerning  such 
rights owned by third parties, arising out of the use of such technical information. 

 
5)

 

The Products are intended for use in general electronic equipment (i.e. AV/OA devices, communication, consumer systems, 
gaming/entertainment sets) as well as the applications indicated in this document. 

 

6)

 

The Products specified in this document are not designed to be radiation tolerant. 

 

7)

 

For  use  of  our  Products  in  applications  requiring  a  high  degree  of  reliability  (as  exemplified  below),  please  contact  and 
consult  with  a  LAPIS  Semiconductor  representative:  transportation  equipment  (i.e.  cars,  ships,  trains),  primary 
communication  equipment,  traffic  lights,  fire/crime  prevention,  safety  equipment,  medical  systems,  servers,  solar  cells, 
and power transmission systems. 

 
8)

 

Do not use our Products in applications requiring extremely high reliability, such as aerospace equipment, nuclear power 
control systems, and submarine repeaters.   

 

9)

 

LAPIS  Semiconductor  shall  have  no  responsibility  for  any  damages  or  injury  arising  from  non-compliance  with  the 
recommended usage conditions and specifications contained herein. 

 

10)

 

LAPIS Semiconductor has  used reasonable care to    ensure the accuracy of the information contained in this document. 
However, LAPIS Semiconductor does not warrant that such information is error-free and LAPIS Semiconductor shall have 
no responsibility for any damages arising from any inaccuracy or misprint of such information. 

 

11)

 

Please  use  the  Products  in  accordance  with  any  applicable  environmental  laws  and  regulations,  such  as  the  RoHS 
Directive. For  more details, including RoHS compatibility, please contact a ROHM sales office.  LAPIS Semiconductor 
shall have no responsibility for any damages or losses resulting non-compliance with any applicable laws or regulations. 

 

12)

 

When  providing  our  Products  and  technologies  contained  in  this  document  to  other  countries,  you  must  abide  by  the 
procedures  and  provisions  stipulated  in  all  applicable  export  laws  and  regulations,  including  without  limitation  the  US 
Export Administration Regulations and the Foreign Exchange and Foreign Trade Act. 

 

13)

 

This document, in part or in whole, may not be reprinted or reproduced without prior consent of LAPIS Semiconductor. 

 

Copyright    2018 LAPIS Semiconductor Co., Ltd. 

 
 
 

 

 

2-4-8 Shinyokohama, Kouhoku-ku, 

Yokohama 222-8575, Japan 

http://www.lapis-semi.com/en/ 

Summary of Contents for ML7345

Page 1: ...chnology and LAPIS Technology succeeded LAPIS Semiconductor s LSI business Therefore all references to LAPIS Semiconductor Co Ltd LAPIS Semiconductor and or LAPIS in this document shall be replaced wi...

Page 2: ...ML7345 Family LSIs Hardware Design Manual Issue Date Sep 5th 2019 FEXL7345DG 02...

Page 3: ...designed to be radiation tolerant 7 For use of our Products in applications requiring a high degree of reliability as exemplified below please contact and consult with a LAPIS Semiconductor representa...

Page 4: ...devices Hereafter ML7345 And also contains the measurement conditions and example of measurement results of RF characteristics Target product ML7345 ML7345C ML7345D The following related manual is av...

Page 5: ...case 103 1000 Milli m 10 3 Micro 10 6 Nano n 10 9 Second s lowercase Second Terminology H level Signal level on the high voltage side indicates the voltage level of VIH and VOH as defined in electrica...

Page 6: ...1 ANTENNA TX AND RX DIRECT TIE MATCHING CIRCUIT 10 6 NOTES ON SELECTING EXTERNAL PARTS RECOMMENDATIONS 11 6 1 ANNTENNA 11 6 2 INDUCTORS 11 6 3 CAPACITORS 11 6 4 RESISTORS 11 7 NOTES ON BOARD ARTWORKS...

Page 7: ...ML7345 Family LSIs Hardware Design Manual v...

Page 8: ...voltage for the PA_OUT pin 20 should be provided the DC bias through the inductor L3 REG_PA 21 VDD_PA 22 VDD_REG 1 Including backside GND GND REG_OUT 3 PA_OUT 20 VBG 2 VDD REG_CORE 4 VB_EXT 31 VDD_VCO...

Page 9: ...pin as possible 3 The smaller capacitor should be closer to an LSI pin than other capacitors 4 VDDIO 9 VDD_PA 22 VDD_REG 1 pins connected to the VDD share the trace 5 A 1 F decoupling capacitor shoul...

Page 10: ...ystal oscillator circuit It is recommended to ask your oscillator manufacturer to evaluate the matching component values on the assembled board The following tables show the matching component values...

Page 11: ...d the XOUT 6 pins to suppress parasitic LCR and stabilize the oscillator 3 Do not place the crystal oscillator circuit across other signal lines 4 Do not trace signal lines where large current flow ar...

Page 12: ...equency accuracy below 10ppm The ML7345 has integrated bias circuit and the DC bias is applied to the TCXO 6 pin A 0 1uF capacitor should be placed on the TCXO line as following In ML7345 5 pin is N C...

Page 13: ...t select high dielectric type and semiconductor type so there is low accuracy and non linear temperature characteristics In order to prevent noise the loop filter components C3 R3 and C2 should be pla...

Page 14: ...And the C will be the sum of the capacitor C1 the line capacitor of the PCB and the internal capacitor including calibration capacitor of the ML7345 Table 4 1 shows the typical value of internal capac...

Page 15: ...ctureing process normal temperature contorol In order for the VCO_CAL value to be within the 64 dec 20code by shipment test use the deviation of L C is less than 2 The frequency range that PLL can loc...

Page 16: ...ed so that their positional relationship becomes the 90 degrees to avoid their coupling 2 2 L1 and L3 should be placed close to their connect pins of ML7345 They should not be placed close to each oth...

Page 17: ...MHz 19 7 j62 5 19 7 j62 5 4 6 j91 2 13 7 j72 5 Note These component values appropriate for use on the LAPIS Semiconductor s RF board It is not guaranteed to obtain same result on your specific board 5...

Page 18: ...al Impedance 50 6 2 Inductors Use inductors with high Q It is recommended to use LQW15AN series manufactured by Murata Manufacturing Co Ltd or equivalent 6 3 Capacitors Use capacitors with a CH temper...

Page 19: ...REG_CORE VDD_REG 25 31 32 3 27 2 4 1 R3 6 8k C3 1000pF C37 1uF X1 IC1 ML7345 LP 26 PA_OUT 20 LNA_P 24 IND2 GND_VCO IND1 30 29 28 Back side is GND PAD VDDIO 9 A_MON 23 C33 1000pF C27 1000pF C41 100pF L...

Page 20: ...2 3 27 2 4 1 R3 12k C3 1000pF C37 1uF X1 IC1 ML7345 LP 26 PA_OUT 20 LNA_P 24 IND2 GND_VCO IND1 30 29 28 Back side is GND PAD VDDIO 9 XIN XOUT 5 6 A_MON 23 C33 1000pF C27 1000pF C41 100pF L2 11nH L3 5...

Page 21: ...VDD_VCO REG_OUT VDD_CP VBG REG_CORE VDD_REG 25 31 32 3 27 2 4 1 R3 12k C37 1uF X1 IC1 ML7345 LP 26 PA_OUT 20 LNA_P 24 IND2 GND_VCO IND1 30 29 28 Back side is GND PAD VDDIO 9 XIN XOUT 5 6 A_MON 23 C33...

Page 22: ...DD_VCO REG_OUT VDD_CP VBG REG_CORE VDD_REG 25 31 32 3 27 2 4 1 R3 6 8k C37 1uF X1 IC1 ML7345C LP 26 PA_OUT 20 LNA_P 24 IND2 GND_VCO IND1 30 29 28 Back side is GND PAD VDDIO 9 XIN XOUT 5 6 A_MON 23 C33...

Page 23: ...M N M 6 8pF KOA Corporation Murata Manufacturing Co Ltd RK73Z1ETTP GJM15Series 4 L9 20nH 0 0 23nH KOA Corporation Murata Manufacturing Co Ltd RK73Z1ETTP LQW15AN Series 4 C1 3 9pF 3 9pF 3 3pF N M Murat...

Page 24: ...IC1 ML7345 ML7345C LAPIS Semiconductor Co Ltd RF LSI Crystal input ML7345 Component Value Vender Remarks X1 24MHz River Eletec Corporation FA 128 Nihon Denpa Kogyo Co Ltd NX2016SA IC2 N M C4 1pF Murat...

Page 25: ...20 LNA_P 24 IND2 GND_VCO IND1 30 29 28 Back side is GND PAD VDDIO 9 XIN XOUT 5 6 A_MON 23 C33 1000pF C27 1000pF C41 0 L2 30nH L3 18nH C45 100pF C48 2 4pF L5 7 3nH C47 4 7pF L1 4 7nH C17 0 1uF C22 1000...

Page 26: ...31 32 3 27 2 4 1 R3 12k C3 1000pF C37 1uF X1 IC1 ML7345D LP 26 PA_OUT 20 LNA_P 24 IND2 GND_VCO IND1 30 29 28 Back side is GND PAD VDDIO 9 XIN XOUT 5 6 A_MON 23 C33 1000pF C27 1000pF C41 0 L2 8 2nH L3...

Page 27: ...XT VDD_VCO REG_OUT VDD_CP VBG REG_CORE VDD_REG 25 31 32 3 27 2 4 1 R3 12k C37 1uF X1 IC1 ML7345D LP 26 PA_OUT 20 LNA_P 24 IND2 GND_VCO IND1 30 29 28 Back side is GND PAD VDDIO 9 XIN XOUT 5 6 A_MON 23...

Page 28: ...Ltd GJM1552C1H5R6C 4 L9 20nH 0 0 Murata Manufacturing Co Ltd LQW15AN Series 4 C1 3 9pF 3 9pF 3 3pF Murata Manufacturing Co Ltd GJM15 Series 2 C2 10pF 68pF 68pF Murata Manufacturing Co Ltd GJM15 Series...

Page 29: ...Ltd RF LSI Crystal input ML7345D Component Value Vender Remarks X1 24MHz River Eletec Corporation FA 128 Nihon Denpa Kogyo Co Ltd NX2016SA IC2 N M C4 1pF Murata Manufacturing Co Ltd GRM155 or equivale...

Page 30: ...t Before revision After revision FEXL7345DG 01 2018 5 8 1st revision FEXL7345DG 02 2019 9 5 5 5 2 2 TCXO circuit ML7345 ML7345D 8 8 4 1 Adjusting component values for VCO tank 10 10 5 RF matching comp...

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