Datasheet > NW50M50LA-1.544M-NSA3438B

NW50M50LA-1.544M-NSA3438B

更新时间： 2024-11-28 02:52:15

品牌	Logo	应用领域
日本电波 - NDK		/
页数	文件大小	规格书
1页	88K
描述
Frequency Timing and Translation Modules

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数据手册

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NW50M50LA-1.544M-NSA3438B 数据手册

NEW

Frequency Timing and Translation Modules

Frequency Controlled Crystal Oscillator (FCXO)

Model Name NW50M50LA/B

Stratum3 Module

Main Application

SONET, SDH, FTTH, Communications equipment

Features

l Two reference input frequencies in 9 steps from 8 kHz to 77.76 MHz.

Compliant with Telecordia GR1244CORE, GR253.

l Hit-less reference switching.

l Frequency ramp control during reference switching.

l Simple hardware control for operational modes (Freerun, Locked to Ref 1 or 2 and

* Module markings may be changed without notice.

Holdover)

Two output signals: one fixed at 8 kHz, one selectable (see specifications) up to 77.76 MHz.

Specifications

Model

NW50M50LA

NW50M50LB

Item

+5.0 V DC 5ꢀ

Supply Voltage (V_CC

)

TCXO version 125 mA typ

OCXO version 525 mA typ turn on and 250 mA Steady state

Current Consumption

Operating Temp. Range

Input Levels

Input Reference Frequency (HMz)

Output Levels

Output Frequencies (MHz)

Free-run accuracy

PLL bandwidth

0 to +70°C

2-CMOS

8 kHz, 1.544 MHz, 2.048 MHz, 12.96 MHz, 19.44 MHz, 25.92 MHz, 38.88 MHz, 51.84 MHz or 77.76 MHz

Two CMOS outputs

OPT Sync Outputs: 12.96 MHz, 19.44 MHz, 25.92 MHz, 38.88 MHz, 51.84 MHz or 77.76 MHz

−6

4.6ꢁ10 max.

0.1 Hz

List of Ordering Codes

Control Functions

Output frequency (MHz)

Ordering Code

CNTL B

CNTL A

Mode of operation

FREE-RUN

Lock to REF 1

Lock to REF 2

Holdover

NW50M50LA-[

]-NSA3438A

]-NSA3438B

OTP Sync Output: One selectable up to 77.76 MHz

]: OTP Sync Output to order.

NW50M50LB-[

[

For example, in 19.44 MHz case, NW50M50LA-19.44M-NSA3438A

Dimensions

50.8 0.3

14.8max

PAD No. Connection

1.6 0.1

5.08 0.3

Holdover

REF1

REF2

#10

#11

#12

#13

#14

#15

#16

#17

#18

FREE-RUN

GND

ALARM OUT

CNTL A

CNTL B

PLL UNLOCK

GND

SYNC OUT

GND

OPT Sync OUT

GND

EX REF 2

GND

EX REF 1

+5V

50.8 0.3

40.64 0.3

0.51 0.3

5.29 0.3

Detail A

40.64 0.3

18 − ø1.78 0.2

18 − ø1.0 0.13

co35_080205_NW50M50LA&B_e1

中文翻译

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