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參數(shù)資料
| 型號(hào)： | GS9005BCPJ |
| 廠商： | Gennum Corporation |
| 英文描述： | GENLINX-TM GS9005B Serial Digital Receiver |
| 中文描述： | GENLINX -商標(biāo)GS9005B串行數(shù)字接收機(jī) |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 137K |
| 代理商： | GS9005BCPJ |
9 of 12
32466 - 0
NOTRECOMMENDED
(page 11). The fixed value frequency setting resistors should
be placed close to the corresponding pins on the GS9005B.
FORNEWDESGNS
The layout of the loop filter and RVCO components requires
careful attention. This has been detailed in an application
note entitled "Optimizing Circuit and Layout Design of the
GS9005A/15A", Document No. 521 - 32 - 00.
TEST SETUP
Figure 14 shows a typical circuit for the GS9005B using a +5
volt supply. The four 0.1μF decoupling capacitors must be
placed as close as possible to the corresponding V
CC
pins.
The loop voltage can be conveniently measured across the
10nF capacitor in the loop filter. Tuning procedures are
When the Direct Digital Inputs are not used, one of these
inputs should be connected to V
CC
to avoid picking up noise
and unwanted signals.
The Carrier Detect is an open-collector active high output
requiring a pull-up resistor of approximately 10 k
.
The SS0, SS1, CD pins should see a low AC impedance. This
is particularly important when driving the SS0, SS1 pins with
external logic. The use of 1 nF decoupling capacitors at these
pins ensures this.
Figure 15 shows the GS9005B connections when using a -5
volt supply.
Fig.14 GS9005B Typical Test Circuit Using +5V Supply
All resistors in ohms, all capacitors in microfarads, all inductors in henries unless otherwise stated.
+
DATA
INPUTS
0.1μ
100
100
100
100
390
390
DATA
DATA
CLOCK
CLOCK
390
0.1μ
10μ
0.1μ
25
24
23
22
21
20
19
5
6
7
8
9
10
11
4 3 2 1 28 27 26
V
12 13 14 15 16 17 18
910
22n
75
113
75
47p
5.6p
10n
+5V
÷1
÷2
0.1μ
47p
0.1μ
10k
CARRIER
DETECT
OUTPUT
See Figure 18
+5V
+5V
+5V
+5V
INPUT
GS9005B
DD
I
DD
I
VCC2
SD
I
SD
I
/2
VEE3
SDO
SDO
SCO
SCO
SS1
SS0
CD
V
A
A
S
V
V
L
V
SSI
STAR
ROUTED
LOOP
VOLTAGE
TEST
POINT
ANALOG
+5V
DIGITAL
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