Output Enable. On-chip pullup resistor. Connect OE to logic-high, V
參數(shù)資料
型號(hào): DS4425BN+
廠商: Maxim Integrated Products
文件頁數(shù): 5/8頁
文件大?。?/td> 0K
描述: IC OSC CLOCK 425MHZ 10-LCCC
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 11
系列: DS4-XO
類型: 時(shí)鐘振蕩器
頻率: 425MHz
電源電壓: 3 V ~ 3.6 V
電流 - 電源: 53mA
工作溫度: -40°C ~ 85°C
封裝/外殼: 10-LCCC 裸露焊盤
包裝: 管件
供應(yīng)商設(shè)備封裝: 10-LCCC
安裝類型: 表面貼裝
DS4106/DS4212/DS4425
Pin Description
PIN
NAME
FUNCTION
1
OE
Output Enable. On-chip pullup resistor. Connect OE to logic-high, VCC, or leave open to enable the
output clock. Connect OE to logic-low or GND to disable the output clock. The LVPECL output
clock is set to high impedance when disabled. The LVDS output clock is latched to a differential
high when disabled.
2, 7–10
N.C.
No Connection
3
GND
Ground
4
OUTP
Positive Clock Output, LVPECL or LVDS
5
OUTN
Negative Clock Output, LVPECL or LVDS
6
VCC
+3.3V Supply
EP
Exposed Paddle. Do not connect this pad or place exposed metal under the pad.
OSCILLATOR
AMPLIFIER
PFD
COUNTER N
LOOP FILTER
VCO
COUNTER M
OUTPUT
BUFFER
VCC
OUTP
OUTN
OE
GND
DS4106/
DS4212/
DS4425
Detailed Description
The DS4106/DS4212/DS4425 combine a crystal and an
IC to form a precision clock. Figure 1 shows a function-
al diagram of the devices. The IC consists of a crystal
oscillator, a low-noise PLL, selectable clock-divider cir-
cuitry, and an output buffer. The PLL consists of a digi-
tal phase/frequency detector (PFD) and low-jitter
generation VCO. The VCO signal is scaled by a clock-
divider circuit and applied to the output buffer.
Output Drivers
All devices are available with either LVPECL
(DS4106A/DS4212A/DS4425A) or LVDS (DS4106B/
DS4212B/DS4425B) output buffers. When not needed,
the output buffers can be disabled. When disabled, the
LVPECL output buffer goes to a high-impedance state.
However, the LVDS outputs go to a differential logic
one (OUTP latched high and OUTN latched low) when
the outputs are disabled.
Additional Information
For more available frequencies, refer to the DS4125
data sheet at www.maxim-ic.com/DS4125.
Figure 1. Functional Diagram
106.25MHz/212.5MHz/425MHz
Clock Oscillators
_______________________________________________________________________________________
5
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