1©2018 Integrated Device Technology, Inc. September 7, 2018
Description
The IDT XL devices (XO and VCXO options) are ultra-precision
crystal oscillators with 750 to 890fs typical phase jitter over 12kHz
to 20MHz bandwidth. Available in a wide frequency range from
0.750MHz to 1350MHz, the XL series crystal oscillators utilize a
family of proprietary ASICs, with a key focus on noise reduction
technologies.
The 3rd order Delta Sigma Modulator reduces noise to the levels
that are comparable to traditional Bulk Quartz and SAW
oscillators. With short lead-time, low cost, low noise, wide
frequency range, excellent ambient performance, the XL devices
are an excellent choice over the conventional technologies. The
XL (XO option) devices have stabilities as tight as ±20ppm and
the XL (VCXO option) devices have ±50ppm APR. Either option
provides extremely quick delivery for both standard and custom
frequencies.
Features
▪Output types: LVDS, LVPECL, LVCMOS
▪Phase jitter (12kHz to 20MHz): 750fs to 890fs typical
▪Supply voltage: 2.5V or 3.3V
▪Package options:
•3.2 × 2.5 × 1.0 mm (not available for VCXO)
•5.0 × 3.2 × 1.2 mm
•7.0 × 5.0 × 1.3 mm
▪Operating temperature: -20°C to +70°C
•Frequency stability options: ±20, ±25, ±50, or ±100 ppm
(XO only)
•±50ppm APR (VCXO only)
▪Operating temperature: -40°C to +85°C
•Frequency stability options: ±25, ±50, or ±100 ppm
(XO only)
•±50ppm APR (VCXO only)
▪Operating temperature: -40°C to +105°C (XO only)
•Frequency stability options: ±50 or ±100 ppm
▪kV of 85ppm/volt typical from 0.5VDC to VDD (VCXO only)
•Better than ±10% linearity for Vc range
Pin Assignments (XO option)
NOTE: To minimize power supply line noise, a 0.01μF bypass capacitor should be placed between VDD (Pin 6) and GND (Pin 3) on 6-pin
devices, or VDD (Pin 4) and GND (Pin 2) on 4-pin devices.
Table 1. XO 6-pin Package Table 2. XO 4-pin Package
[a] Pulled high internally.
[b] Low = output disabled.
See Ordering Information (XO) for more details.
Number Name Description
1E/D
NC
Enable/Disable [a][b]
No connect
2NC
E/D
No connect
Enable/Disable [a][b]
3 GND Connect to ground
4OUT Output
5 OUT2 Complementary output
6V
DD Supply voltage
123
456
E/D / NC
NC / E/D
OUT
OUT2
VDD
GND
Number Name Description
1 E/D Enable/Disable [a][b]
2 GND Connect to ground
3OUT Output
4V
DD Supply voltage
XL
Datasheet
XL Family of Low Phase Noise
Quartz-based PLL Oscillators