XF Family of Low Phase Noise
Quartz-based PLL Oscillators
Datasheet
XF
Description
The XF devices are ultra-low phase noise quartz-based PLL
oscillators supporting a large range of frequencies and output
interface types. These devices are designed to operate at three
different power supplies with several pinout configurations, as well
as two operational temperature ranges.
The XF devices can be programmed to generate an output
frequency from 15MHz to 2100MHz with a resolution as low as
1Hz accuracy. The configuration capability of this family of devices
allows for fast delivery times for both sample and large production
orders.
Parts are for one time programming (OTP) at the factory for a
fixed frequency application, or can be field programmable using
I2C, based on system needs (see notes under Pin Descriptions).
Features
▪
Output types: LVDS, LVPECL, CML
•
Frequency range: 15MHz to 2100MHz
▪
Output type: HCSL
•
Frequency range: 15MHz to 725MHz
▪
▪
▪
▪
Supply voltage options: 1.8V, 2.5V, or 3.3V
Phase jitter (12kHz to 20MHz): 120fs typical
Package: 2.5 × 2.0 mm, 0.4mm pitch DFN
Operating temperatures and frequency stability:
•
-40°C to +85°C, ±25ppm
•
-40°C to +105°C, ±50ppm
Typical Applications
▪
FOM Gear Box
▪
Data centers
▪
10G / 40G / 100G / 400G Ethernet
Pin Assignments
NC
NC
Voltage Control
SDA
OE
SCL
1
2
3
4
5
6
12
11
10
9
8
7
Ground Core
V
DD
Core
Ground Output
Output 0b
Output 0
V
DD
Output
Table 1. Pin Descriptions
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
1
2
Pin Name
NC
NC
Voltage Control
2
SDA
1
OE
SCL
1
V
DD
Output
Output 0
Output 0b
Ground Output
V
DD
Core
Ground Core
EPAD (dotted area shown in Pin Assignments diagram)
No connect.
No connect.
Description
Voltage control for VCXO option.
Serial data.
Output enable.
Serial clock.
Supply voltage.
Output 0.
Complementary output 0.
Connect to ground.
Supply voltage.
Connect to ground.
Connect to ground (required for heat dissipation).
Pins 4 and 6 are no connect for I2C applications.
Pin 3 is no connect for analog VCXO applications.
See
Ordering Information
for more details.
©2019 Integrated Device Technology, Inc.
1
July 22, 2019
XF Datasheet
Contents
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Typical Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
ESD Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Mechanical Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Solder Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
AC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Output Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Termination for 3.3V LVPECL Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Termination for 2.5V LVPECL Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
LVDS Driver Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Recommended Termination for HCSL Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
CML Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Package Outline Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Marking Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
©2019 Integrated Device Technology, Inc.
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July 22, 2019
XF Datasheet
Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the device. These ratings, which are standard values for IDT
commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those
indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended
periods can affect product reliability. Electrical parameters are guaranteed only over the recommended operating temperature range.
Thermal characteristics, in actual applications, should be assessed case by case to guarantee junction temperature does not exceed
125°C.
Table 2. Absolute Maximum Ratings
Item
V
DD
E/D
Storage Temperature
Maximum Junction Temperature
Theta J
A
(Still air, 2s2p board)
1
Theta J
B
(Still air, 2s2p board)
1
1
Rating
-0.5V to +3.8V
-0.5V to +3.8V
-55°C to 125°C
125°C
97.0 C/W
62.2 C/W
Thermal characteristics are based on simulation in standard condition.
ESD Compliance
Table 3. ESD Compliance
Human Body Model (HBM)
2000V
Mechanical Testing
Table 4. Mechanical Testing *
Parameter
Mechanical Shock
Mechanical Vibration
High Temp Operating Life (HTOL)
Hermetic Seal
* MSL level does not apply.
Test Method
Half-sine wave with 0.3ms 3000G. X, Y, Z each direction 1 time.
Frequency: 10 to 55MHz amplitude: 1.5mm.
Frequency: 55–2000Hz peak value: 20G.
Duration time: 4H for each X,Y,Z axis; total 12hours.
1000 hours at 125°C (under power).
Gross leak (air leak test). Fine leak (Helium leak test) He-pressure: 6kgf/cm² 2 hours.
Solder Reflow Profile
t
P
260°C
225°C
180°C
160°C
Ramp up 3°C/s Max
50 ±10 seconds
above 225°C
reflow area
120 ±20 seconds in
pre-heating area
Ramp down not to
exceed 6°C/s
10 seconds Max within 5°C of
260°C peak
25°C
400 seconds Max from +25°C to 260°C peak
©2019 Integrated Device Technology, Inc.
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July 22, 2019
XF Datasheet
DC Electrical Characteristics
Note for all DC Electrical Characteristics tables: A pull-up resistor from V
DD
to OE enables output when pin 5 is left open.
Table 5. 3.3V IDD DC Electrical Characteristics
V
DD
= 3.3V ±5%, T
A
= -40°C to +85°C, -40°C to +105°C, typical at 156.25MHz.
Symbol
Parameter
Output Type
LVDS
Conditions
15MHz to 400MHz.
400MHz to 2.1GHz.
15MHz to 212.5MHz.
I
DD
Current Consumption
LVPECL
HCSL
CML
212MHz to 400MHz.
400MHz to 2.1GHz.
15MHz to 725MHz.
15MHz to 2.1GHz.
Minimum
—
—
—
—
—
—
—
Typical
59
—
84
—
—
74
45
Maximum
67
85
94
110
110
83
61
mA
Units
Table 6. 2.5V IDD DC Electrical Characteristics
V
DD
= 2.5V ±5%, T
A
= -40°C to +85°C, -40°C to +105°C, typical at 156.25MHz.
Symbol
Parameter
Output Type
LVDS
Conditions
15MHz to 400MHz.
400MHz to 2.1GHz.
15MHz to 156.25MHz.
I
DD
Current Consumption
LVPECL
156.25MHz to 400MHz.
400MHz to 2.1GHz.
HCSL
CML
15MHz to 400MHz.
400MHz to 725MHz.
15MHz to 2.1GHz.
Minimum
—
—
—
—
—
—
—
—
Typical
59
—
84
—
—
—
74
54
Maximum
66
85
94
110
110
95
82
61
mA
Units
Table 7. 1.8V IDD DC Electrical Characteristics
V
DD
= 1.8V ±5%, T
A
= -40°C to +85°C, -40°C to +105°C, typical at 156.25MHz.
Symbol
Parameter
Output Type
LVDS
LVPECL
HCSL
CML
Conditions
15MHz to 400MHz.
400MHz to 2.1GHz.
15MHz to 250MHz.
250MHz to 2.1GHz.
15MHz to 400MHz.
400MHz to 725MHz.
15MHz to 2.1GHz.
Minimum
—
—
—
—
—
—
—
Typical
59
—
84
—
—
74
54
Maximum
66
85
93
110
95
81
61
mA
Units
I
DD
Current Consumption
©2019 Integrated Device Technology, Inc.
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July 22, 2019
XF Datasheet
Table 8. LVCMOS DC Electrical Characteristics
V
DD
= 3.3V, 2.5V, 1.8V ±5%, T
A
= -40°C to +85°C, -40°C to +105°C, typical at 156.25MHz.
Symbol
V
IH
V
IL
Parameter
Input High Voltage (OE pin only)
Input Low Voltage (OE pin only)
Conditions
V
DD
= 3.3V, 2.5V, 1.8V ±5%
V
DD
= 3.3V, 2.5V, 1.8V ±5%
Minimum
0.7 × V
DD
GND - 0.3
Typical
—
—
Maximum
V
DD
+ 0.3
0.3 × V
DD
Units
V
V
Table 9. LVDS DC Electrical Characteristics
V
DD
= 3.3V, 2.5V, 1.8V ±5%, T
A
= -40°C to +85°C, -40°C to +105°C, typical at 156.25MHz.
Symbol
V
OD
V
OS
Parameter
Differential Output Voltage
Output Offset Voltage
Conditions
V
DD
= 3.3V, 2.5V, 1.8V ±5%
V
DD
= 3.3V ±5%
V
DD
= 2.5V ±5%
V
DD
= 1.8V ±5%
Table 10. LVPECL DC Electrical Characteristics
Minimum
0.30
1.11
1.08
0.75
Typical
0.44
1.26
1.25
0.88
Maximum
0.60
1.41
1.41
1.01
Units
V
V
DD
= 3.3V, 2.5V, 1.8V ±5%, T
A
= -40°C to +85°C, -40°C to +105°C, typical at 156.25MHz.
Symbol
Parameter
Conditions
V
DD
= 3.3V ±5%.
V
OH
Output High Voltage
V
DD
= 2.5V ±5%.
V
DD
= 1.8V ±5%.
V
DD
= 3.3V ±5%.
V
OL
Output Low Voltage
V
DD
= 2.5V ±5%.
V
DD
= 1.8V ±5%.
Table 11. HCSL DC Electrical Characteristics
Minimum
2.28
1.52
0.83
1.68
0.92
0.19
Typical
2.49
1.69
0.96
1.84
1.04
0.30
Maximum
2.72
1.87
1.11
2.01
1.17
0.42
Units
V
V
DD
= 3.3V, 2.5V, 1.8V ±5%, T
A
= -40°C to +85°C, -40°C to +105°C, typical at 156.25MHz.
Symbol
Parameter
Conditions
V
DD
= 3.3V ±5%.
V
OH
V
OL
Output High Voltage
Output Low Voltage
V
DD
= 2.5V ±5%.
V
DD
= 1.8V ±5%.
—
Minimum
0.78
0.74
0.67
-0.06
Typical
0.92
0.88
0.81
0.07
Maximum
1.07
1.03
0.95
0.20
V
Units
©2019 Integrated Device Technology, Inc.
5
July 22, 2019
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