M624-625.0000 [IDT]
Oscillator;
| 型号： | M624-625.0000 |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Oscillator |
| 文件： | 总6页 (文件大小：628K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
P r e l i m i n a r y I n f o r m a t i o n
Integrated
Circuit
Systems, Inc.
M624
VOLTAGE CONTROLLED SAW OSCILLATOR
GENERAL DESCRIPTION
PIN ASSIGNMENT (0.6 x 0.8 inch SMT)
The M624 is a VCSO (Voltage Controlled SAW
Oscillator) frequency source
specifically designed for high-speed
SONET/SDH applications for rates
up to OC-768. Its integrated SAW
(surface acoustic wave) delay line
provides excellent phase noise
9
1
8
7
GND
GND
GND
10
11
6
5
M624
VIN
(Top View)
performance and spectral purity, while requiring a low
supply voltage (+3.3V). An extremely linear tuning
range makes the M624 especially suited for phase-
locked loop applications, which are extensively used
in timing circuits and clock and data recovery in
fiber-linked data systems. The SMT VCSO’s small
size and minimal power requirements make it ideal
for the miniturization applications that are emerging,
without sacrificing performance.
4
12
VCC
RF_OUT
2
3
Figure 1: Pin Assignment
FEATURES
◆ VCSO center frequency from 500 to 625MHz
◆ Low phase noise -109dBc/Hz @ 1kHz offset typical
◆ Superior SAW jitter performance and aging;
jitter 0.015ps rms typical (12kHz-20MHz)
◆ Excellent frequency stability and tuning linearity
◆ Low power consumption (300 mW)
◆ Single 3.3V power supply
◆ Small 0.6 x 0.8 inch SMT (surface mount) package
BLOCK DIAGRAM
M624
SAW Delay Line
Ceramic Filter
RF_OUT
Phase
VCSO
Shifter
VIN
Figure 2: Block Diagram
M624 Datasheet Rev 5.0
Revised 16Apr2004
M624 Voltage Controlled SAW Oscillator
Integrated Circuit Systems, Inc. ● Communications Modules ● www.icst.com ● tel (508) 852-5400
M624
Integrated
Circuit
Systems, Inc.
VOLTAGE
C
ONTROLLED SAW OSCILLATOR
P r e l i m i n a r y I n f o r m a t i o n
PIN DESCRIPTIONS
Number
1, 2, 3, 5, 6,
7, 8, 9, 10
Name
I/O
Configuration
Description
GND
Ground
Power supply ground connections.
Clock output.
4
RF_OUT
Output
No internal terminator
11
12
VIN
Input
Tuning control voltage.
VCC
Power
Power supply connection, connect to +3.3V.
Table 1: Pin Descriptions
1
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter
Rating
0 to +70
Unit
TC
TS
VCC
VI
Operating Temperature Range (case)
Storage Temperature Range (ambient)
Power Supply Voltage
oC
oC
V
-40 to +125
+4.0
Control Voltage
0 to +4.0
V
Table 2: Absolute Maximum Ratings
Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the
device. These ratings are stress specifications only. Functional operation of product at these conditions
or any conditions beyond those listed in Recommended Conditions of Operation, DC Characteristics, or
AC Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods
may affect product reliability
.
RECOMMENDED CONDITIONS OF OPERATION
Symbol Parameter
Min
Typ
Max
Unit
3.135
3.3
3.465
VCC
Positive Supply Voltage
V
oC
0
TC
Operating Temperature Range (case)
25
+70
Table 3: Recommended Conditions of Operation
M624 Datasheet Rev 5.0
2 of 6
Revised 16Apr2004
Integrated Circuit Systems, Inc. ● Communications Modules ● www.icst.com ● tel (508) 852-5400
M624
Integrated
Circuit
Systems, Inc.
VOLTAGE
C
ONTROLLED SAW OSCILLATOR
P r e l i m i n a r y I n f o r m a t i o n
ELECTRICAL SPECIFICATIONS
DC Characteristics
Unless stated otherwise, VCC = 3.3 Volts + 5%, TC = 25 oC, VCSO Freq. = 622.08MHz
Symbol Parameter
Power Supply VCC Positive Supply Voltage
Pin
Min
3.135
Typ
3.3
Max
3.465
Unit
V
VCC
65
90
ICC
VIN
Power Supply Current
Control Voltage
mA
V
1.5
Tuning
400
∆f
Tuning Range
Tuning Voltage
kHz
V
0
3.0
VT
Table 4: DC Characteristics
AC Characteristics
Unless stated otherwise, VCC = 3.3 Volts + 5%, TC = 25 oC, VCSO Freq. = 622.08MHz
Symbol Parameter
Min
500
Typ
622.08
Max
625
Unit
MHz
Notes
Frequency
Outputs
FOUT
Output Center Frequency Range
KVCO
Average VCO Gain
@622.08MHz
135
3
kHz/V
Output Power
dBm
-30
-60
Harmonic Spurious
Non-harmonic Spurious
dBc
dBc
1kHz Offset
10kHz Offset
-109
-132
-154
-161
-161
0.015
Φn
SSB (single sideband)
Phase Noise, offset
from carrier
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ps rms
100kHz Offset
1MHz Offset
10MHz Offset
12kHz to 20MHz
J(t)
Jitter (rms)
Table 5: AC Characteristics
M624 Datasheet Rev 5.0
3 of 6
Revised 16Apr2004
Integrated Circuit Systems, Inc. ● Communications Modules ● www.icst.com ● tel (508) 852-5400
M624
Integrated
Circuit
Systems, Inc.
VOLTAGE
C
ONTROLLED SAW OSCILLATOR
P r e l i m i n a r y I n f o r m a t i o n
TYPICAL DATA
Phase Noise
Harmonics
-90
-100
-110
-120
-130
-140
-150
-160
-170
1.00E+03
1.00E+04
1.00E+05
Frequency in Hz
1.00E+06
1.00E+07
Figure 3: Phase Noise
Figure 5: Harmonics
Typical Linearity
Typical Frequency Pushing
20
15
10
622.35
622.30
622.25
622.20
622.15
622.10
5
0
622.05
622.00
621.95
-5
-10
-15
-20
621.90
621.85
0
0.25 0.5 0.75
1
1.25 1.5 1.75
2
2.25 2.5 2.75
3
3.20
3.40
Vcc (V)
Typical linearity of a M624 operating at 622.08 MHz
over the input range of 0 to 3.0 volts
Figure 4: Typical Linearity
Figure 6: Typical Frequency Pushing
M624 Datasheet Rev 5.0
4 of 6
Revised 16Apr2004
Integrated Circuit Systems, Inc. ● Communications Modules ● www.icst.com ● tel (508) 852-5400
M624
Integrated
Circuit
Systems, Inc.
VOLTAGE
C
ONTROLLED SAW OSCILLATOR
P r e l i m i n a r y I n f o r m a t i o n
DEVICE PACKAGE - 0.6 x 0.8 inch SMT (Surface Mount) Package
Mechanical Dimensions:
Recommended PCB Footprint:
0.714
0.357
12 x
0.07
GND
GND
8
GND
7
12 x 0.082
9
GND 10
6
5
4
GND
0.20
TYP
0.262
0.523
0.50
0.60
VIN 11
GND
0.30
VCC 12
0.10
RF Out
2
3
1
GND
GND
GND
0.20
0.20
0.40
TYP
0.60
Figure 8: Recommended PCB Footprint
0.80
Recommended Mounting Instructions
Connection # Mounting Instructions
0.20
3
5
Adhere to good RF grounding practices. GND
via(s) to be located directly on PCB Footprint.
Dimensions are in inches.
4
Should be a 50 ohm connection for optimum
performance at specified frequency.
Figure 7: Device Package - Mechanical Dimensions
11
12
No special considerations other than to be a solid
connection.
M624 Datasheet Rev 5.0
5 of 6
Revised 16Apr2004
Integrated Circuit Systems, Inc. ● Communications Modules ● www.icst.com ● tel (508) 852-5400
M624
Integrated
Circuit
Systems, Inc.
VOLTAGE
C
ONTROLLED SAW OSCILLATOR
P r e l i m i n a r y I n f o r m a t i o n
ORDERING INFORMATION
Part Numbering Scheme
Example VCSO Output Frequencies (MHz)*
Part Number:
M624- xxx.xxxx
500.0000
Series
622.0800
Table 6: Example VCSO Output Frequencies (MHz)*
VCSO Frequency (MHz)
See Table 6, right. Consult ICS for other frequencies.
Figure 9: Part Numbering Scheme
* Consult ICS for the availablity of other frequencies
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (ICS)
assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would
result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial
applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary
environmental requirements are not recommended without additional processing by ICS. ICS reserves the right to change any
circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life support devices or
critical medical instruments.
M624 Datasheet Rev 5.0
6 of 6
Revised 16Apr2004
Integrated Circuit Systems, Inc. ● Communications Modules ● www.icst.com ● tel (508) 852-5400
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