Datasheet

AD8260
Rev. A | Page 11 of 32
OUTPUT VOLTAGE (V)
TIME (ns)
C
LOAD
= 5pF
C
LOAD
= 10pF
C
LOAD
= 47pF
8 07060–20 10–30 0 30–10 20 5040
R
LOAD
= 50Ω
NONINVERTING
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
07192-021
Figure 21. Large-Signal Pulse Response of the High Current Driver for Various
Values of Load Capacitance, C
LOAD
, and 50 Ω Load—See Figure 56
27
24
21
18
15
12
9
6
3
0
–3
–6
–9
GAIN SELECT CODE
GAIN (dB)
07192-022
10111010100110000111011001010001 010000110010
AVERAGE OF 3 SAMPLES
f = 1MHz, 10MHz, AND 40MHz
Figure 22. Gain vs. Gain Select Code for Three Samples for the
VGA/Preamplifier at Three Frequencies—See Figure 57
4.00
3.75
3.50
3.25
3.00
2.75
2.50
2.25
2.00
GAIN STEP (dB)
07192-023
AVERAGE OF 3 SAMPLES
f = 1MHz, 10MHz, AND 40MHz
GAIN SELECT CODE
1011101010011000011101100101010000110010
Figure 23. Gain Step vs. Gain Select Code for Three Samples for the
VGA/Preamplifier at Three Frequencies—See Figure 57
1.00
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011
GAIN SELECT CODE
ABSOLUTE GAIN ERROR (dB)
07192-024
AVERAGE OF 3 SAMPLES
f = 1MHz, 10MHz, AND 40MHz
Figure 24. Absolute Gain Error vs. Gain Select Code for Three Samples for the
VGA/Preamplifier at Three Frequencies Normalized to 1 MHz and Code 0110
See Figure 57
1.00
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011
GAIN SELECT CODE
GAIN ERROR (dB)
07192-025
AVERAGE OF 3 SAMPLES AT
EACH TEMPERATURE
T = +105°C
T = +25°C
T = –40°C
Figure 25. Gain Error vs. Gain Select Code at Three Temperatures for the
VGA/Preamplifier—See Figure 57
0
–40
–30
–20
50
20
30
40
–50
OFFSET VOLTAGE (mV)
GAIN SELECT CODE
1010100110000111011001010001 010000110010
AVERAGE OF 3 SAMPLES AT
EACH TEMPERATURE
1011
10
–10
T = +105°C
T = +25°C
T = –40°C
07192-026
Figure 26. Output Offset Voltage vs. Gain Select Code at Three Temperatures
for the VGA/Preamplifier—See Figure 58