ABV0251SC-T [ABRACON]
Low Phase Noise VCXO (20MHz to 52MHz);
| 型号： | ABV0251SC-T |
| 厂家： | 
ABRACON |
| 描述： | Low Phase Noise VCXO (20MHz to 52MHz) 石英晶振 压控振荡器 |
| 文件： | 总5页 (文件大小：58K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ABV0251
Low Phase Noise VCXO (20MHz to 52MHz)
FEATURES
PIN CONFIGURATION
•
Integrated voltage-controlled crystal oscillator
circuitry (VCXO) (pull range 380ppm minimum).
VCXO tuning range: 0V - VDDV.
Uses inexpensive fundamental-mode parallel
resonant crystals (from 20 to 52MHz).
2.5V or 3.3V supply voltage.
Selectable High Drive (30mA) or Standard Drive
(10mA) CMOS output.
XOUT
N/C
XIN
1
2
3
4
8
7
6
5
•
•
OE^
VDD
CLK
VCON
GND
•
•
•
Available in 8-Pin SOIC or TSSOP.
Note: ^ denotes internal pull up
DESCRIPTION
OUTPUT RANGE
The ABV0251 is a monolithic low jitter, high per-
formance CMOS VCXO IC. It allows control of the
output frequency with an input voltage (VCON), us-
ing a low cost crystal.
FREQUENCY
RANGE
OUTPUT
BUFFER
MULTIPLIER
No PLL
20 - 52MHz
CMOS
This makes the ABV0251 ideal for a wide range of
applications from 20MHz to 52MHz (including
27MHz, 35.328MHz, etc.).
BLOCK DIAGRAM
XIN
XTAL
OSC
CLK
XOUT
VARICAP
OE
VCON
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 1
ABV0251
Low Phase Noise VCXO (20MHz to 52MHz)
PIN DESCRIPTIONS
Name
Number
Type
Description
XOUT
N/C
1
2
3
4
5
6
I
-
Crystal output. See Crystal Specification on page 4.
Not connected.
Voltage Control input.
Ground.
VCON
GND
CLK
I
P
O
P
Output clock.
Power supply.
VDD
Output enable input. Disables (tri-state) output when low. Internal pull-up
enables output by default if pin is not connected to low.
Crystal input. See Crystal Specification on page 4.
OE
7
8
I
I
XIN
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS
SYMBOL
MIN.
MAX.
UNITS
Supply Voltage
VDD
VI
4.6
VDD+0.5
VDD+0.5
150
V
Input Voltage, dc
-0.5
-0.5
-65
V
Output Voltage, dc
VO
TS
TA
TJ
V
Storage Temperature
°C
°C
°C
°C
kV
Ambient Operating Temperature*
Junction Temperature
-40
85
125
Lead Temperature (soldering, 10s)
ESD Protection, Human Body Model
260
2
Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permanent damage to the
device and affect product reliability. These conditions represent a stress rating only, and functional operations of the device at these or any other con-
ditions above the operational limits noted in this specification is not implied.
* Note: Operating Temperature is guaranteed by design for all parts (COMMERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade only.
2. DC Electrical Specifications
PARAMETERS
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS
Supply Current, Dynamic, with
Loaded Outputs
FXIN = 20 - 52MHz
Output load of 10pF
IDD
10
mA
Operating Voltage
VDD
IOH
IOL
2.25
30
3.63
V
VOH= VDD-0.4V, VDD=3.3V
VOL = 0.4V, VDD = 3.3V
VOH= VDD-0.4V, VDD=3.3V
VOL = 0.4V, VDD = 3.3V
mA
mA
mA
mA
mA
V
Output drive current
(High Drive)
30
IOH
IOL
10
Output drive current
(Standard Drive)
10
Short Circuit Current
VCXO Control Voltage
±50
VCON
0
VDD
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 2
ABV0251
Low Phase Noise VCXO (20MHz to 52MHz)
3. AC Electrical Specifications
PARAMETERS
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS
Input Crystal Frequency
20
52
MHz
Output Clock Rise/Fall Time
(Standard Drive)
Output Clock Rise/Fall Time
(High Drive)
0.3V ~ 3.0V with 15 pF load
2.4
ns
%
0.3V ~ 3.0V with 15 pF load
Measured @ 50% VDD
1.2
50
Output Clock Duty Cycle
45
55
4. Voltage Control Crystal Oscillator (3.3V)
PARAMETERS
SYMBOL
CONDITIONS
From power valid
MIN.
TYP.
MAX.
UNITS
VCXO Stabilization Time *
TVCXOSTB
10
ms
FXIN = 20 - 52MHz;
XTAL C0/C1 < 250
0V ≤ VCON ≤ 3.3V
VCXO Tuning Range
500
ppm
CLK output pullability
VCXO Tuning Characteristic
Pull range linearity
ppm
ppm/V
%
VCON=1.65V ±1.65V
±200
150
80
10
VCON input impedance
VCON modulation BW
kΩ
kHz
25
0V ≤ VCON ≤ 3.3V, -3dB
Note: Parameters denoted with an asterisk (*) represent nominal characterization data and are not production tested to any specific limits.
5. Jitter Specifications
PARAMETERS
Period jitter RMS
CONDITIONS
MIN.
TYP.
MAX.
UNITS
35.328 MHz
35.328MHz
2.3
18
ps
ps
Period jitter peak-to-peak
Integrated 12 kHz to 20 MHz at
35.328MHz
Integrated jitter RMS
1
ps
6. Phase Noise Specifications
PARAMETERS
FREQUENCY
@10Hz
@100Hz
@1kHz @10kHz @100kHz UNITS
-120 -140 -147 dBc/Hz
Phase Noise relative
to carrier
51.85MHz
-65
-90
Note: Phase Noise at VCON = 0V
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 3
ABV0251
Low Phase Noise VCXO (20MHz to 52MHz)
7. Crystal Specifications
PARAMETERS
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS
Crystal Resonator Frequency
Crystal Loading Rating
Crystal Pullability
Parallel Fundamental Mode
At Vcon = 1.65V
AT cut
20
52
MHz
pF
-
FXIN
9.5
CL
(xtal)
250
30
C0/C1 (xtal)
RE
Recommended ESR
AT cut
Ω
Note: Crystal Loading rating: 9.5pF is the loading the crystal sees from the VCXO chip at VCON = 1.65V. It is assumed that the crystal will be at nomi-
nal frequency at this load. If the crystal requires more load to be at nominal frequency, the additional load must be added externally.
This however may reduce the pull range
PACKAGE INFORMATION
8 PIN ( dimensions in mm )
Narrow SOIC
Min.
TSSOP
Symbol
Max.
1.73
0.25
0.51
0.25
4.95
4.00
6.20
1.27
Min.
-
Max.
1.20
0.15
0.30
0.20
3.10
4.50
6.60
0.75
E
H
A
A1
B
1.47
0.10
0.33
0.19
4.80
3.80
5.80
0.38
0.05
0.19
0.09
2.90
4.30
6.20
0.45
C
D
D
E
H
L
A
A1
C
e
0.65 BSC
1.27 BSC
L
B
e
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 4
ABV0251
Low Phase Noise VCXO (20MHz to 52MHz)
ORDERING INFORMATION
For part ordering, please contact our Sales Department:
30332 Esperanza., Rancho Santa Margarita, Ca 92688
Ph: 949-546-8000 Fax: 949-546-8001
PART NUMBER
The order number for this device is a combination of the following:
Device number, Package type and Operating temperature range
ABV0251 (H) X C
PART NUMBER
TEMPERATURE
C=COMMERCIAL
Optional High Drive
I=INDUSTRAL
PACKAGE TYPE
O=TSSOP, S=SOIC
Order Number
Marking
Package Option
ABV0251OC-T
ABV0251OC
ABV0251HOC-T
ABV0251HOC
ABV0251OC
ABV0251OC
ABV0251HOC
ABV0251HOC
TSSOP - Tape and Reel
TSSOP – Tube
TSSOP - Tape and Reel
TSSOP – Tube
ABV0251SC-T
ABV0251SC
ABV0251HSC-T
ABV0251HSC
ABV0251SC
ABV0251SC
ABV0251HSC
ABV0251HSC
SOIC - Tape and Reel
SOIC - Tube
SOIC - Tape and Reel
SOIC - Tube
Abracon Corporation, reserves the right to make changes in its products or specifications, or both at any time without notice. The information fur-
nished by Abracon is believed to be accurate and reliable. However, Abracon makes no guarantee or warranty concerning the accuracy of said infor-
mation and shall not be responsible for any loss or damage of whatever nature resulting from the use of, or reliance upon this product.
LIFE SUPPORT POLICY: Abracon’s products are not authorized for use as critical components in life support devices or systems without the express
written approval of the President of Abracon Corporation.
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 5
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