Datasheet

AD8108/AD8109
Rev. B | Page 3 of 32
AD8108/AD8109—SPECIFICATIONS
V
S
= ±5 V, T
A
= +25°C, R
L
= 1 kΩ, unless otherwise noted.
Table 1.
Parameter Conditions Min Typ Max Unit Reference
DYNAMIC PERFORMANCE
−3 dB Bandwidth 200 mV p-p, R
L
= 150 Ω 240/150 325/250 MHz
Figure 1,
Figure 13
2 V p-p, R
L
= 150 Ω 140/160 MHz
Figure 1,
Figure 13
Propagation Delay 2 V p-p, R
L
= 150 Ω 5 ns
Slew Rate 2 V Step, R
L
= 150 Ω 400/480 V/µs
Settling Time 0.1%, 2 V Step, R
L
= 150 Ω 40 ns
Figure 15,
Figure 18
Gain Flatness 0.05 dB, 200 mV p-p, R
L
= 150 Ω 60/50 MHz
Figure 1,
Figure 13
0.05 dB, 2 V p-p, R
L
= 150 Ω 60/50 MHz
Figure 1,
Figure 13
0.1 dB, 200 mV p-p, R
L
= 150 Ω 70/65 MHz
Figure 1,
Figure 13
0.1 dB, 2 V p-p, R
L
= 150 Ω 80/50 MHz
Figure 1,
Figure 13
NOISE/DISTORTION PERFORMANCE
Differential Gain Error NTSC or PAL, R
L
= 1 kΩ 0.01 %
NTSC or PAL, R
L
= 150 Ω 0.02 %
Differential Phase Error NTSC or PAL, R
L
= 1 kΩ 0.01 Degrees
NTSC or PAL, R
L
= 150 Ω 0.02 Degrees
Crosstalk, All Hostile f = 5 MHz 83/85 dB
Figure 8,
Figure 14
f = 10 MHz 76/83 dB
Figure 8,
Figure 14
Off Isolation, Input-Output
f = 10 MHz, R
L
=150 Ω,
one channel
93/98 dB
Figure 23,
Figure 29
Input Voltage Noise 0.01 MHz to 50 MHz 15
nV/√Hz Figure 20,
Figure 26
DC PERFORMANCE
Gain Error R
L
= 1 kΩ 0.04/0.1 0.07/0.5 %
R
L
= 150 Ω 0.15/0.25 %
Gain Matching No load, channel-channel 0.02/1.0 %
R
L
= 1 kΩ, channel-channel 0.09/1.0 %
Gain Temperature Coefficient 0.5/8 ppm/°C
OUTPUT CHARACTERISTICS
Output Impedance DC, enabled 0.2 Ω
Figure 24,
Figure 30
Disabled 10/0.001 MΩ
Figure 21,
Figure 27
Output Disable Capacitance Disabled 2 pF
Output Leakage Current Disabled, AD8108 only 1/NA µA
Output Voltage Range No load ±2.5 ±3 V
Output Current 20 40 mA
Short-Circuit Current 65 mA