83PR226I-01 Datasheet, PDF (2/22 Pages) Integrated Device Technology – Programmable FemtoClock LVPECL Oscillator Replacement

Block Diagram
N0 ^Pullup
N1 ^Pullup
XTAL_IN
OSC
Phase Detector
XTAL_OUT
FemtoClock VCO
500MHz – 640MHz
Output Divider
N[1:0] Value
00 ÷6
01 ÷3
10 ÷4
11 ÷5 (default)
83PR226I-01 Datasheet
Q
nQ
M1 ^Pullup
M0 ^Pullup
M1 M0
00
01
10
11
M Value
÷32
÷24
÷20
÷25 (default)
Table 1. Pin Descriptions
Number
1, 2
3
4, 5
6, 7
8
9, 10
Name
M1, M0
V_EE
XTAL_IN
XTAL_OUT
Q, nQ
V_CC
N1, N0
Type
Input
Pullup
Power
Input
Output
Power
Input
Pullup
Description
Feedback divider control inputs. Sets the feedback divider value to one of four
values: ÷32, ÷25, ÷24, or ÷20 (see Table 3A). LVCMOS/LVTTL interface levels.
Negative supply pin.
Crystal oscillator interface XTAL_IN is the input, XTAL_OUT is the output. This
oscillator interface can also be driven by a single-ended or differential reference
clock.
Differential output pair. LVPECL interface levels.
Power supply pin.
Output divider control inputs. Sets the output divider value to one of four values:
÷3, ÷4, ÷5, or ÷6 (see Table 3B). LVCMOS/LVTTL interface levels.
NOTE: Pullup refers to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Symbol
C_IN
R_PULLUP
Parameter
Input Capacitance
Input Pullup Resistor
Test Conditions
Minimum
Typical
3.5
51
Maximum
Units
pF
k
©2017 Integrated Device Technology, Inc.
2
April 13, 2017