–2–
AD9851–SPECIFICATIONS (VS1=5V5%,RSET=3.9k,6REFCLKMultiplierDisabled,ExternalReference
Clock = 180 MHz, except as noted.)
Test
AD9851BRS
Parameter
Temp
Level
Min
Typ
Max
Unit
CLOCK INPUT CHARACTERISTICS
Frequency Range (6 REFCLK Multiplier Disabled)
5.0 V Supply
Full
IV
1
180
MHz
3.3 V Supply
Full
IV
1
125
MHz
2.7 V Supply
0°C to 85°C
IV
1
100
MHz
Frequency Range (6 REFCLK Multiplier Enabled)
5.0 V Supply
Full
IV
5
30
MHz
3.3 V Supply
Full
IV
5
20.83
MHz
2.7 V Supply
0°C to 85°C
IV
5
16.66
MHz
Duty Cycle
Full
IV
45
60
%
Duty Cycle (6 REFCLK Multiplier Enabled)
Full
IV
35
65
%
Input Resistance
25°C
V
1
M
Minimum Switching Thresholds2
Logic 1, 5.0 V Supply
25°C
IV
3.5
V
Logic 1, 3.3 V Supply
25°C
IV
2.3
V
Logic 0, 5.0 V Supply
25°C
IV
1.5
V
Logic 0, 3.3 V Supply
25°C
IV
1
V
DAC OUTPUT CHARACTERISTICS
Full-Scale Output Current
25°C
IV
5
10
20
mA
Gain Error
25°C
I
–10
+10
% FS
Output Offset
25°C
I
10
A
Differential Nonlinearity
25°C
I
0.75
LSB
Integral Nonlinearity
25°C
I
1
LSB
Residual Phase Noise, 5.2 MHz, 1 kHz Offset
PLL On
25°C
V
–125
dBc/Hz
PLL Off
25°C
V
–132
dBc/Hz
Output Impedance
25°C
V
120
k
Voltage Compliance Range
25°C
I
–0.5
+1.5
V
Wideband Spurious-Free Dynamic Range
1.1 MHz Analog Out (DC to 72 MHz)
25°C
IV
60
64
dBc
20.1 MHz Analog Out (DC to 72 MHz)
25°C
IV
51
53
dBc
40.1 MHz Analog Out (DC to 72 MHz)
25°C
IV
51
55
dBc
50.1 MHz Analog Out (DC to 72 MHz)
25°C
IV
46
53
dBc
70.1 MHz Analog Out (DC to 72 MHz)
25°C
IV
42
43
dBc
Narrowband Spurious-Free Dynamic Range
1.1 MHz (±50 kHz)
25°C
V
85
dBc
1.1 MHz (±200 kHz)
25°C
V
80
dBc
40.1 MHz (±50 kHz)
25°C
V
85
dBc
40.1 MHz (±200 kHz)
25°C
V
80
dBc
70.1 MHz (±50 kHz)
25°C
V
85
dBc
70.1 MHz (±200 kHz)
25°C
V
73
dBc
COMPARATOR INPUT CHARACTERISTICS
Input Capacitance
25°C
V
3
pF
Input Resistance
25°C
IV
500
k
Input Bias Current
25°C
I
12
A
Input Voltage Range
25°C
IV
0
5
V
COMPARATOR OUTPUT CHARACTERISTICS
Logic 1 Voltage 5 V Supply
25°C
VI
4.8
V
Logic 1 Voltage 3.3 V Supply
25°C
VI
3.1
V
Logic 1 Voltage 2.7 V Supply
25°C
VI
2.3
V
Logic 0 Voltage
25°C
VI
+0.4
V
Continuous Output Current
25°C
IV
20
mA
Hysteresis
25°C
IV
10
mV
Propagation Delay
25°C
IV
7
ns
Toggle Frequency (1 V p-p Input Sine Wave)
25°C
IV
200
MHz
Rise/Fall Time, 15 pF Output Load
25°C
IV
7
ns
Output Jitter (p-p)3
25°C
IV
80
ps (p-p)
CLOCK OUTPUT CHARACTERISTICS
Output Jitter (Clock Generator Configuration,
40 MHz 1 V p-p Input Sine Wave)
25°C
V
250
ps (p-p)
Clock Output Duty Cycle
Full
IV
50 ± 10
%
REV. D