
Data Sheet
AD9517-3
Rev. E | Page 15 of 80
POWER DISSIPATION
Table 17.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
POWER DISSIPATION, CHIP
Power-On Default
1.0
1.2
W
does not include power dissipated in external resistors
Full Operation; CMOS Outputs at 225 MHz
1.4
2.0
W
PLL on; internal VCO = 2250 MHz; VCO divider = 2;
all channel dividers on; six LVPECL outputs at 562.5 MHz;
eight CMOS outputs (10 pF load) at 225 MHz; all fine
delay on, maximum current; does not include power
dissipated in external resistors
Full Operation; LVDS Outputs at 225 MHz
1.4
2.1
W
PLL on; internal VCO = 2250 MHz, VCO divider = 2;
all channel dividers on; six LVPECL outputs at 562.5 MHz;
four LVDS outputs at 225 MHz; all fine delay on,
maximum current; does not include power dissipated
in external resistors
PD Power-Down
75
185
mW
PD pin pulled low; does not include power dissipated
in terminations
PD Power-Down, Maximum Sleep
31
mW
PD pin pulled low; PLL power-down, Register 0x010[1:0] = 01b;
SYNC power-down, Register 0x230[2] = 1b; REF for distribution
power-down, Register 0x230[1] = 1b
VCP Supply
4
4.8
mW
PLL operating; typical closed-loop configuration
POWER DELTAS, INDIVIDUAL FUNCTIONS
Power delta when a function is enabled/disabled
VCO Divider
30
mW
VCO divider bypassed
REFIN (Differential)
20
mW
All references off to differential reference enabled
REF1, REF2 (Single-Ended)
4
mW
All references off to REF1 or REF2 enabled; differential
reference not enabled
VCO
70
mW
CLK input selected to VCO selected
PLL
75
mW
PLL off to PLL on, normal operation; no reference enabled
Channel Divider
30
mW
Divider bypassed to divide-by-2 to divide-by-32
LVPECL Channel (Divider Plus Output Driver)
160
mW
No LVPECL output on to one LVPECL output on,
independent of frequency
LVPECL Driver
90
mW
Second LVPECL output turned on, same channel
LVDS Channel (Divider Plus Output Driver)
120
mW
dependence on output frequency
LVDS Driver
50
mW
Second LVDS output turned on, same channel
CMOS Channel (Divider Plus Output Driver)
100
mW
Static; no CMOS output on to one CMOS output on; see
CMOS Driver (Second in Pair)
0
mW
Static; second CMOS output, same pair, turned on
CMOS Driver (First in Second Pair)
30
mW
Static; first output, second pair, turned on
Fine Delay Block
50
mW
Delay block off to delay block enabled; maximum
current setting