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參數(shù)資料
| 型號(hào)： | AD809BRZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC SYNTH FREQ 155.52MHZ 16SOIC |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類型： | 時(shí)鐘/頻率合成器 |
| PLL： | 無(wú) |
| 輸入： | CMOS，ECL，PECL，TTL |
| 輸出： | ECL，PECL |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 2:1 |
| 差分 - 輸入:輸出： | 是/是 |
| 頻率 - 最大： | 155.52MHz |
| 除法器/乘法器： | 無(wú)/無(wú) |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOIC |
| 包裝： | 帶卷 (TR) |
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
155.52 MHz Frequency Synthesizer
AD809
FEATURES
Frequency Synthesis to 155.52 MHz
19.44 MHz or 9.72 MHz Input
Reference Signal Select Mux
Single Supply Operation: +5 V or –5.2 V
Output Jitter: 2.0 Degrees RMS
Low Power: 90 mW
10 KH ECL/PECL Compatible Output
10 KH ECL/PECL/TTL/CMOS Compatible Input
Package: 16-Pin Narrow 150 Mil SOIC
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
Analog Devices, Inc., 1997
155.52 Mbps ports. The AD809 can be applied to create the trans-
mit bit clock for one or more ports.
An input signal multiplexer supports loop-timed applications
where a 155.52 MHz transmit bit clock is recovered from the
155.52 Mbps received data.
The low jitter VCO, low power and wide operating temperature
range make the device suitable for generating a 155.52 MHz bit
clock for SONET/SDH/Fiber in the Loop systems.
The device has a low cost, on-chip VCO that locks to either
8
× or 16× the frequency at the 19.44 MHz or 9.72 MHz input.
No external components are needed for frequency synthesis; how-
ever, the user can adjust loop dynamics through selection of a
damping factor capacitor whose value determines loop damping.
The AD809 design guarantees that the clock output frequency
will drift low (by roughly 20%) in the absence of a signal at the
input.
The AD809 consumes 90 mW and operates from a single power
supply at either +5 V or –5.2 V.
PRODUCT DESCRIPTION
The AD809 provides a 155.52 MHz ECL/PECL output clock from
either a 19.44 MHz or a 9.72 MHz TTL/CMOS/ECL/PECL refer-
ence frequency. The AD809 functionality supports a distributed
timing architecture, allowing a backplane or PCB 19.44 MHz or
9.72 MHz timing reference signal to be distributed to multiple
FUNCTIONAL BLOCK DIAGRAM
AUTO
SELECT
PFD
LOOP
FILTER
VCO
AUTO SELECT
DIVIDE BY 8/16
BW
ADJUST
MUX
CLKOUTN
(155MHz
PECL
OUTPUT)
CLKIN
TTL/CMOSIN
(155MHz)
MUX
CF1 CF2
AD809
15
1
2
10
12
13
7
8
5
4
CLKOUT
(19.44MHz
OR
9.72MHz)CLKINN
PECLIN
PECLINN
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