AD9516-4_15 Datasheet, PDF (13/80 Pages) Analog Devices – 14-Output Clock Generator with Integrated 1.6 GHz VCO

Data Sheet
AD9516-4
PD, RESET, AND SYNC PINS
Table 15.
Parameter
INPUT CHARACTERISTICS
Logic 1 Voltage
Logic 0 Voltage
Logic 1 Current
Logic 0 Current
Capacitance
RESET TIMING
Pulse Width Low
SYNC TIMING
Pulse Width Low
Min Typ Max Unit
2.0
V
0.8 V
110
µA
1
µA
2
pF
Test Conditions/Comments
These pins each have a 30 kΩ internal pull-up
resistor
50
ns
1.5
High speed High speed clock is CLK input signal
clock cycles
LD, STATUS, AND REFMON PINS
Table 16.
Parameter
OUTPUT CHARACTERISTICS
Output Voltage High (VOH)
Output Voltage Low (VOL)
MAXIMUM TOGGLE RATE
Min Typ Max Unit
2.7
V
0.4 V
100
MHz
ANALOG LOCK DETECT
Capacitance
3
pF
REF1, REF2, AND VCO FREQUENCY STATUS MONITOR
Normal Range
1.02
MHz
Extended Range (REF1 and REF2 Only)
8
kHz
LD PIN COMPARATOR
Trip Point
Hysteresis
1.6
V
260
mV
Test Conditions/Comments
When selected as a digital output (CMOS); there are
other modes in which these pins are not CMOS
digital outputs; see Table 54, Register 0x017,
Register 0x01A, and Register 0x01B
Applies when mux is set to any divider or counter
output or PFD up/down pulse; also applies in
analog lock detect mode; usually debug mode
only; beware that spurs may couple to output
when any of these pins are toggling
On-chip capacitance; used to calculate RC time
constant for analog lock detect readback; use a
pull-up resistor
Frequency above which the monitor always
indicates the presence of the reference
Frequency above which the monitor always
indicates the presence of the reference
Rev. C | Page 13 of 80