PT7V4027 반도체 회로 부품 판매점
VCXO 3.3V operating voltage
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Preliminary Data Sheet
PT7V4027 VCXO
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Product Features
General Description
• 3.3V operating voltage
• Uses an inexpensive external crystal
• Provide clock output enable
• On-chip VCXO with pull range of 240ppm
• VCXO tuning voltage from 0 to 3.3V
• 10mA output driver at CMOS levels
• Available in SOIC package
Ordering Information
Ordering
code
PT7V4027W
Package
type
8-Pin SOIC
Operating
Range
Industrial
The PT7V4027 is a low-cost, high-performance 3.3V
VCXO, designed to replace expensive VCXO modules.
The on-chip voltage causes clocks to vary by ±120ppm. It
uses an inexpensive external pullable crystal at
27MHz to produce the same output frequency.
Applications
z Set-Top Box
z xDSL
Logic Block Diagram
Pin Configuration
OE
X1
NC
VIN
GND
18
2 PT7V4027 7
36
45
SOIC 8 package
X2
OE
Vcc
CLKOUT
Pin Description
Pin
Number
Pin Name
1, 8 X1, X2
2 NC
3 VIN
4 GND
5 CLKOUT
6 VCC
7 OE
PT0147(05/04)
Type
I
I
PWR
O
PWR
I
Description
Crystal Connection, Connect to a pullable 27MHz crystal
No Connect, Can be float or connected to VCC or GND
Voltage Input to VCXO
Ground
Clock Output
Power Supply +3.3V
Output Enable. High or floating enables output. Internal pull-up.
1
Ver: 0
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Preliminary Data Sheet
PT7V4027 VCXO
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Maximum Ratings
(Above which the useful life may be impaired. For user
guidelines, not tested.)
Storage Temperature………………..-55oC to 125oC
Ambient Temperature…………….….-40oC to 85oC
Supply Voltage VCC …………….…. … -0.5V to 7V
Input Voltage……………………-0.5V to VCC+0.5V
Output Current ……………………………….10mA
Soldering Lead Temperature(10s)…………….260oC
Note:
Stresses greater than those listed under MAXIMUM RATINGS
may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or
any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to
absolute maximum rating conditions for extended periods may
affect reliability.
DC Electrical Characteristics
(Unless otherwise specified, VCC = 3.3V, fO = 27MHz, VIN = 1.65V, Load = 15pF, TA = 25oC)
Sym.
Parameter
Test Condition
Pin Min. Typ. Max.
VDD Supply Voltage
IDD Supply Current
IDDS Supply Current
VIH Input Logic High
VIL Input Logic Low
IOH High-level output voltage
IOL Low-level output voltage
IOZ Output Leakage Current
RS * Negative Resistance
f Input Frequency
OE = 3.3V,
CL = 15pF
OE = 0V
VOH = VDD-0.5V
VOL = 0.5V
OE = 0V
VIN = 0V
VDD 3.153 3.3 3.465
VDD
5
VDD 0.33 1
OE 2.0
OE 0.8
CLKOUT
-11 -4
CLKOUT 4
12
CLKOUT
10
X1, X2
-150
X1, X2
20
27
30
CL Output Capacitance
* Note: only reference for design.
CLKOUT
15 30
Unit
V
mA
V
V
mA
µA
Ω
MHz
pF
AC Electrical Characteristics
(Unless otherwise specified, fO = 27MHz, Load = 15pF, TA = 25oC)
Sym.
Parameter
Test Condition
Pin
tr / tf Rise / Fall time
Duty Output clock duty cycle
∆f Output frequency pull range
tj Cycle to cycle jitter
0.1VCC to 0.9VCC
At VCC/2
VIN from 0V to VCC
CLKOUT
CLKOUT
Linearity
Oscillator start time
VIN from 0.1 to 0.9VCC
Trigger at 0.9VCC
Min.
45
Typ.
1.5
50
±120
50
Max.
6
55
Unit
ns
%
ppm
ps
±10 %
1.5 10 ms
PT0147(05/04)
2
Ver: 0
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PT7V4027 data
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
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IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
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