8101925 Datasheet, PDF (1/11 Pages) Integrated Device Technology – VCXO-to-LVCMOS/ LVTTL Output

VCXO-to-LVCMOS/ LVTTL Output
8101925
Datasheet
General Description
The 8101925 is a high performance, low jitter/low phase noise
VCXO from IDT. The 8101925 works in conjunction with a 25MHz
pullable crystal to generate an LVCMOS/LVTTL output clock of
25MHz from an input clock of 5MHz or 19.44MHz. The output range
is ±100ppm around the nominal crystal frequency. The device is
packaged in a small 16 TSSOP package and is ideal for use on
space constrained boards.
Features
• One single-ended LVCMOS or LVTTL output
• One single-ended clock accepts the following input types:
LVCMOS, LVTTL
• Output frequency: 25MHz
• Accepts 5MHz or 19.44MHz with auto input frequency detect
• Absolute pull range (APR): ±100ppm
• RMS phase jitter. (12kHz – 5MHz): 0.4ps (typical)
• Full 3.3V supply, or 3.3V core/2.5V output supply
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) package
• For functional replacement part use 810252
Block Diagram
Loop
Filter
(÷125 or ÷486)
CLK ^Pulldown
Pre-Divider
5MHz or 19.44MHz
Frequency auto detect
25MHz
Phase
Detector
Charge
Pump
VCXO
VCXO Feedback Divider
÷625
VCXO Jitter Attenuation PLL
Q
25MHz
Pin Assignment
nc 1
GND 2
Q3
V_DDO 4
nc 5
nc 6
V_DDA 7
VDD 8
16 VDD
15 CLK
14 GND
13 LF1
12 LF0
11 XTAL_IN
10 XTAL_OUT
9 GND
8101925
16-Lead TSSOP
4.4mm x 5.0mm x 0.925mm
package body
G Package
Top View
©2016 Integrated Device Technology, Inc.
1
Revision B, November 7, 2016