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參數(shù)資料
| 型號： | FS8170 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 2.5 GHz Low Power Phase-locked Loop IC |
| 中文描述： | 2.5 GHz的低功耗鎖相環(huán)集成電路 |
| 文件頁數(shù)： | 2/17頁 |
| 文件大小： | 269K |
| 代理商： | FS8170 |
FS8170
Page 2
May 2003
Pin Descriptions
Functional Block Diagram
Number
Name
I/O
Description
1
XIN
I
Reference crystal oscillator or external clock input with internally biased amplifier
2
XOUT
O
Reference crystal oscillator output
3
VP
—
Power supply voltage for the charge pump
4
VCC
—
Power supply voltage
5
DO
O
Single-ended charge pump output
6
VSS
—
Ground
7
XFIN
I
Complementary input for prescaler (normally ac-bypassed via a capacitor)
8
FIN
I
VCO frequency input with internally biased input amplifier
9
CLK
I
Shift register clock input
10
DATA
I
Serial data input
11
LE
I
Load enable signal input
12
EN
I
Power-down control
13
ZC
I
Forced high-impedance control for the charge pump
14
FOLD
O
Multiplexed CMOS level output (see Functional Description section for programming infor-
mation)
15
φ
P
O
Phase comparator N-channel open drain output for an external charge pump
16
φ
R
O
Phase comparator CMOS inverter output for an external charge pump
PFD
LD MUX
FIN
XFIN
DATA
CLK
LE
CONTROL
LOGIC
SHIFT REGISTER
R-LATCH
FOLD
DO
LOCK
DETECTOR
EN
N-LATCH
N-COUNTER
R-COUNTER
CHARGE
PUMP
OSC
N-PRESCALER
XOUT
XIN
φ
R
φ
P
ZC
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