8101925 Datasheet, PDF (2/11 Pages) Integrated Device Technology – VCXO-to-LVCMOS/ LVTTL Output

8101925 Datasheet
Table 1. Pin Descriptions
Number
1, 5, 6
2, 9, 14
3
4
7
8, 16
10,
11
12
13
15
Name
nc
GND
Q
V_DDO
V_DDA
V_DD
XTAL_OUT,
XTAL_IN
LF0
LF1
CLK
Type
Unused
Power
Output
Power
Power
Power
Description
No connect.
Power supply ground.
Single-ended clock output. LVCMOS/ LVTTL interface levels.
Output power supply pin.
Analog supply pin.
Core power supply pins.
Input
VCXO crystal oscillator interface. XTAL_IN is the input. XTAL_OUT is the output.
Analog
Input/
Output
Analog
Input/
Output
Input
Output to external loop filter. Charge pump output.
Input from external loop filter. VCXO control voltage input.
Pulldown
Single-ended clock input with auto frequency detect. LVCMOS/LVTTL interface
levels.
NOTE: Pulldown refers to an internal input resistor. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Symbol
Parameter
C_IN
Input Capacitance
R_PULLDOWN Input Pulldown Resistor
R_OUT
Output Impedance
Test Conditions
V_DDO = 3.3V±5%
V_DDO = 2.5V±5%
Minimum
Typical
4
51
17
20
Maximum
Units
pF
k


©2016 Integrated Device Technology, Inc.
2
Revision B, November 7, 2016