XF Family of Low Phase Noise
Quartz-based PLL Oscillators
XF
Datasheet
Description
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
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.
▪ Operating temperatures and frequency stability:
• -40°C to +85°C, ±25ppm
• -40°C to +105°C, ±50ppm
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).
Typical Applications
▪ FOM Gear Box
▪ Data centers
Pin Assignments
1
2
3
4
5
6
12
11
10
9
NC
Ground Core
DD Core
▪ 10G / 40G / 100G / 400G Ethernet
V
NC
Voltage Control
SDA
Ground Output
Output 0b
8
Output 0
OE
7
SCL
VDD Output
Table 1. Pin Descriptions
Pin Number
Pin Name
Description
1
2
NC
NC
No connect.
No connect.
3
Voltage Control 2
Voltage control for VCXO option.
Serial data.
4
SDA 1
5
OE
Output enable.
6
SCL 1
Serial clock.
7
V
DD Output
Supply voltage.
Output 0.
8
Output 0
9
Output 0b
Complementary output 0.
Connect to ground.
Supply voltage.
Connect to ground.
10
11
12
13
Ground Output
V
DD Core
Ground Core
EPAD (dotted area shown in Pin Assignments diagram)
Connect to ground (required for heat dissipation).
1 Pins 4 and 6 are no connect for I2C applications.
2 Pin 3 is no connect for analog VCXO applications.
See Ordering Information for more details.
©2019 Integrated Device Technology, Inc.
1
July 22, 2019