Analog Devices SSM2166 - Manual (Page 5)

SSM2166
REV. A –5–
ROTATION POINT – V rms
R ROT PT RESISTOR – k ⍀
1.0
0.1
0.01
0 45 5 10 35 40 15 20 25 30 50 55
T A = +25°C
V+ = 5V
R
L
= 100k ⍀
COMPRESSION RATIO = 1:1
NOISE GATE SETTING 550 ␮ V rms
GAIN ADJUST (PIN 2) = 1.25k ⍀
60 65 70 75 80 85 90
Figure 9. Rotation Point vs. R
ROT PT
(Pin 11 to V+)
10
0%
100
90
1s 5 ␮ V
T A = +25 C
COMPRESSION RATIO = 15:1
NOISE BW = 20kHz
Figure 10a. Wideband Output Noise
FREQUENCY – Hz
GAIN – dB
70
60
–20
1k 1M 10k 100k
50
40
0
30
20
10
–10
ROTATION POINT = 1.13V rms
NOISE GATE SETTING = 336
␮ V rms
R
COMP
= 40k ⍀
V IN = 400 ␮ V rms
G = 60dB
G = 40dB
G = 20dB
Figure 10b. GBW Curves vs. VCA Gain
FREQUENCY – Hz
–10
–80
20 30k 100 1k
–20
–30
–40
–50
–60
–70
R COMP = 0
R GAIN = 1.24k ⍀
R
GATE
= 500k ⍀
R ROT = 1.74k ⍀
10k
V+ = 5±1V p-p
V+ = 5±0.5V p-p
PSRR – dB
Figure 10c. PSRR vs. Frequency
10
0%
100
90
20mV
10 ␮ s
T A = +25 C
C AVG = 2.2 ␮ F
SYSTEM GAIN = 0dB
R
L
= 10k ⍀
COMP RATIO = 1:1
Figure 11. Small Signal Transient Response
10
0%
100
90
10 ␮ s
200mV
T
A
= +25 C
C AVG = 2.2 ␮ F
SYSTEM GAIN = 0dB
R
L = 10k ⍀
COMP RATIO = 1:1
Figure 12. Large Signal Transient Response