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PDF CF5072BA Data sheet ( Hoja de datos )
| Número de pieza | CF5072BA | |
| Descripción | 155MHz VCXO Module IC | |
| Fabricantes | Nippon Precision Circuits | |
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CF5072BA
155MHz VCXO Module IC
OVERVIEW
The CF5072BA is 155MHz VCXO IC. It incorporates a 155.52MHz fundamental frequency oscillator circuit
and a differential LVPECL output circuit on a single chip. The oscillator circuit features characteristics opti-
mized for VCXO operation, and includes a varicap connection pin. The CF5072BA can be configured with few
external components, making them ideal as miniature VCXO modules.
FEATURES
I 3.0 to 3.6V operating supply voltage range
I 70MHz to 200MHz oscillator frequency range
I Differential LVPECL output
I 50 ± 5% output duty
(measured at the output crossing point)
I Output enable function
High impedance output when OE = LOW
(oscillator continues running)
I −40 to 85°C operating temperature range
I Chip form (CF5072BA)
BLOCK DIAGRAM
VDD2
RP X'tal XIN
LS XC
CVC
XR
RVC
VC
100pF
Differential
Converter
Pre-buffer
ECL
C2
RS C1
VSS1
Oscillator block equivalent circuit
VDD1
OUTN
OUT
OE
VSS2
ESD sensitive device:
The XR pin is not equipped with a protection circuit. Accordingly, its electrostatic withstand voltage is significantly lower
than that of the other pins.
ESD breakdown prevention handling precautions are strongly recommended.
ORDERING INFORMATION
Device
CF5072BA−1
Package
Chip form
SEIKO NPC CORPORATION —1
1 page  
CF5072BA
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply voltage range
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Input voltage range
Storage temperature range
Symbol
VDD
VIN
TSTG
Conditions
Rating
VSS − 0.5 to VSS + 7.0
VSS − 0.5 to VDD + 0.5
−65 to 150
Unit
V
V
°C
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply voltage
Operating temperature
Output load
Output frequency
Symbol
Conditions
VDD
TOPR
RL
fOUT
Terminated to VDD − 2V
Rating
Min Typ Max
3.0 – 3.6
−40 –
85
– 50 –
70 – 200
Unit
V
°C
Ω
MHz
ELECTRICAL CHARACTERISTICS
DC Characteristics
Recommended operating conditions apply unless otherwise noted
Parameter
Current consumption
OUT/OUTN HIGH-level output voltage
OUT/OUTN LOW-level output voltage
OE HIGH-level input voltage
OE LOW-level input voltage
OE LOW-level input current
Input impedance
VC resistance
Pull-down resistance
Symbol
Conditions
IDD
Measurement circuit 1, output terminated
to VDD − 2V, OE = OPEN
Ta = 0 to 85°C
VOH
Measurement circuit 2, Ta = −40°C
VDD = 3.3V, OE = OPEN Ta = 0 to 85°C
VOL
Ta = −40°C
VIH Measurement circuit 3
VIL Measurement circuit 3
IIL Measurement circuit 4, VIL = 0V
ZIN
Measurement circuit 5, measured between
supply and VC
RVC
Measurement circuit 6, measured between
VC and XR
RS
Measurement circuit 7, measured between
VSS and XC
Min
–
2.275
2.215
1.490
1.470
0.7VCC
–
–
10
100
10
Rating
Typ
50
2.350
2.295
1.600
1.605
–
–
–
–
150
20
Max
88
2.420
2.420
1.680
1.745
–
0.3VCC
−20
–
200
40
Unit
mA
V
V
V
V
V
V
µA
MΩ
kΩ
kΩ
SEIKO NPC CORPORATION —5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet CF5072BA.PDF ] | |
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