AD605-EB Analog Devices Inc, AD605-EB Datasheet - Page 17

• Manufacturer Part Number: AD605-EB
• Description: BOARD EVAL/DEMO ADJ GAIN AD605
• Manufacturer: Analog Devices Inc
• Type: Amplifiers: OP Ampsr

Specifications of AD605-EB

• Rohs Status: RoHS non-compliant
• Contents: Evaluation Board
• For Use With/related Products: AD605

Figure 40 shows the gain vs. VGN for the circuit in Figure 39
at 1 MHz and the lowest gain range (−14 dB to +34.4 dB). Note
that the gain scaling is 40 dB/V, double the 20 dB/V of an
individual DSX; this is the result of the parallel connection of
the gain control inputs, VGN1 and VGN2. The gain can also be
sequentially increased by first increasing the gain of Channel 1
and then Channel 2. In this case, VGN1 and VGN2 are driven
from separate voltage sources, for instance two separate DACs.
Figure 41 shows the gain error of Figure 39.
–10
–20
–30
–40
80
70
60
50
40
30
20
10
0
0.1
Figure 40. Gain vs. VGN for the Circuit in Figure 39
f = 1MHz
0.5
0.9
1.3
VGN (V)
1.7
THEORETICAL
2.1
ACTUAL
2.5
2.9
Rev. F | Page 17 of 24
–1
–2
–3
–4
Figure 41. Gain Error vs. VGN for the Circuit in Figure 39
4
3
2
1
0
0.2
0.7
1.2
VGN (V)
1.7
2.2
f = 1MHz
AD605
2.7