AD9524
Data Sheet
POWER DISSIPATION
Table 3.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
POWER DISSIPATION
Typical Configuration
559
593
mW
Clock distribution outputs running as follows: four LVPECL outputs
at 122.88 MHz, two LVDS outputs (3.5 mA) at 122.88 MHz,
one differential input reference at 30.72 MHz; fVCXO = 122.88 MHz,
fVCO = 3932.16 MHz; PLL2 BW = 530 kHz; doubler is off
PD, Power-Down
101
389
132.2
450.4
mW
mW
PD pin pulled low, with typical configuration conditions
INCREMENTAL POWER DISSIPATION
Low Power Typical Configuration
Absolute total power with clock distribution; one LVPECL output
running at 122.88 MHz; one differential input reference at
30.72 MHz; fVCXO = 122.88 MHz, fVCO = 3932.16 MHz; doubler is off
Switched to One Input,
Reference Single-Ended Mode
Switched to Two Inputs,
Reference Differential Mode
−28.5
26
−8
mW
mW
mW
Running at 30.72 MHz
Running at 30.72 MHz
Running at 30.72 MHz
44.6
−5.1
Switched to Two Inputs,
−27.5
Reference Single-Ended Mode
Output Distribution, Driver On
LVDS
Incremental power increase (OUT1) from low power typical (3.3 V)
Single 3.5 mA LVDS output at 245.76 MHz
Single 7 mA LVDS output at 61.44 MHz
15.3
47.8
50.1
40.2
43.7
6.6
18.4
55.4
54.9
46.3
50.3
7.9
mW
mW
mW
mW
mW
mW
mW
mW
LVPECL Compatible
HSTL
Single LVPECL output at 122.88 MHz
Single 8 mA HSTL output at 122.88 MHz
Single 16 mA HSTL output at 122.88 MHz
Single 3.3 V CMOS output at 15.36 MHz
Dual complementary 3.3 V CMOS output at 15.36 MHz
Dual in-phase 3.3 V CMOS output at 15.36 MHz
CMOS
9.9
9.9
11.9
11.9
REFA, REFA, REFB, REFB, OSC_IN, OSC_IN, AND ZD_IN, ZD_IN INPUT CHARACTERISTICS
Table 4.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DIFFERENTIAL MODE
Input Frequency Range
Input Slew Rate (OSC_IN)
Common-Mode Internally
Generated Input Voltage
Input Common-Mode Range
Differential Input Voltage,
Sensitivity Frequency < 250 MHz
400
MHz
V/µs
V
400
0.6
Minimum limit imposed for jitter performance
For dc-coupled LVDS (maximum swing)
0.7
0.8
1.025
100
1.475
V
mV p-p Capacitive coupling required; can accommodate single-ended
input by ac grounding of unused input; the instantaneous voltage
on either pin must not exceed the 1.8 V dc supply rails
Differential Input Voltage,
Sensitivity Frequency > 250 MHz
200
mV p-p Capacitive coupling required; can accommodate single-ended
input by ac grounding of unused input; the instantaneous voltage
on either pin must not exceed the 1.8 V dc supply rails
Differential Input Resistance
Differential Input Capacitance
Duty Cycle
4.8
1
kΩ
pF
Duty cycle bounds are set by pulse width high and pulse width low
Pulse Width Low
Pulse Width High
1
1
ns
ns
CMOS MODE SINGLE-ENDED INPUT
Input Frequency Range
Input High Voltage
250
MHz
V
1.6
Input Low Voltage
0.52
V
Input Threshold Voltage
1.0
V
When ac coupling to the input receiver, the user must dc bias the
input to 1 V; the single-ended CMOS input is 3.3 V compatible
Rev. D | Page 6 of 56