ML7404 Family LSIs
Hardware Design Manual
FEXL7404DG-03
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
(ML7404)................................................................................................................... 5
2.3.
F
REQUENCY TOLERANCE OF
I
NPUT
C
LOCK
........................................................................................ 5
3.
PLL LOOP FILTER .................................................................................................................................. 7
4.
VCO ........................................................................................................................................................... 8
4.1.
A
DJUSTING COMPONENT VALUES FOR
VCO
TANK
.............................................................................. 9
4.2.
N
OTE ON THE
VCO
TANK CIRCUIT
.................................................................................................... 10
5.
RF MATCHING COMPONENT VALUES ............................................................................................. 11
5.1.
ANTENNA
T
X AND
R
X DIRECT TIE MATCHING CIRCUIT
.................................................................... 11
6.
NOTES ON SELECTING EXTERNAL PARTS (RECOMMENDATIONS) ........................................ 12
7.
NOTES ON BOARD ARTWORKS (RECOMMENDATIONS) ............................................................. 12
7.1.
GND ................................................................................................................................................. 12
8.
STANDARD ............................................................................................................................................ 13
8.1.
ARIB
STD-T108 .............................................................................................................................. 13
9. CIRCUIT FOR RF CHARACTERISTIC MEASUREMENT (920MHZ) ................................................. 14
10.
BILL OF MATERIALS ....................................................................................................................... 15
10.1.
494.998MH
Z
................................................................................................................................. 15
10.2.
920MH
Z
........................................................................................................................................ 17
10.3.
A
PPLICATION
C
IRCUIT
...........................................
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REVISION HISTORY .................................................................................................................................... 20
