LAPIS Semiconductor ML7345, Hardware Design Manual

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ML7345 Family LSIs Hardware Design Manual
iv
Table of Contents
INTRODUCTION .............................................................................................................................................II
NOTATION ..................................................................................................................................................... III
TABLE OF CONTENTS ................................................................................................................................ IV
1. PLACING DECOUPLING CAPACITORS .............................................................................................. 1
2. CLOCK INPUT ......................................................................................................................................... 3
2.1. C
RYSTAL
O
SCILLATOR CIRCUIT
........................................................................................................... 3
2.1.1. Circuit component values for crystal oscillator circuit ................................................................ 3
2.1.2. Notes on the crystal oscillator circuit configuration .................................................................... 4
2.2. TCXO
CIRCUIT
(ML7345/ML7345D) ................................................................................................. 5
3. PLL LOOP FILTER .................................................................................................................................. 6
4. VCO ........................................................................................................................................................... 7
4.1. A
DJUSTING COMPONENT VALUES FOR
VCO
TANK
.............................................................................. 8
4.2. N
OTE ON THE
VCO
TANK CIRCUIT
...................................................................................................... 9
5. RF MATCHING COMPONENT VALUES ............................................................................................ 10
5.1. ANTENNA T
X AND
R
X DIRECT TIE MATCHING CIRCUIT
................................................................... 10
6. NOTES ON SELECTING EXTERNAL PARTS (RECOMMENDATIONS) ......................................... 11
6.1. A
NNTENNA
......................................................................................................................................... 11
6.2. I
NDUCTORS
........................................................................................................................................ 11
6.3. C
APACITORS
....................................................................................................................................... 11
6.4. R
ESISTORS
......................................................................................................................................... 11
7. NOTES ON BOARD ARTWORKS (RECOMMENDATIONS) .............................................................. 11
7.1. GND .................................................................................................................................................. 11
8. APPLICATION CIRCUIT(ML7345/ML7345C) .................................................................................... 12
8.1.
426
～
433MH
Z
(ML7345/ML7345C) .................................................................................................. 12
8.2. 868MH
Z
(ML7345/ML7345C) .......................................................................................................... 13
8.3. 922MH
Z
(ML7345/ML7345C) .......................................................................................................... 14
8.4. 470
～
510MH
Z
(ML7345C) ............................................................................................................... 15
9. BILL OF MATERIALS(ML7345/ML7345C) ......................................................................................... 16
9.1 426
～
433MH
Z
/868MH
Z
/922MH
Z BAND
(ML7345) 470MH
Z
～
490MH
Z BAND
(ML7345C) ........ 16
10. APPLICATION CIRCUIT(ML7345D) ............................................................................................... 18
10.1. 426
～
433MH
Z
(ML7345D) .......................................................................................................... 18
10.2. 868MH
Z
(ML7345D) ..................................................................................................................... 19
10.3. 922MH
Z
(ML7345D) ..................................................................................................................... 20
11. BILL OF MATERIALS(ML7345D) .................................................................................................... 21
11.1 426
～
433MH
Z
/868MH
Z
/922MH
Z BAND
(ML7345D) ...................................................................... 21
REVISION HISTORY .................................................................................................................................... 23