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SSM2166
REV. A
–5–
ROTATION POINT – V rms
R
ROT PT
RESISTOR – k⍀
1.0
0.1
0.01
045510 354015 20 25 30 50 55
T
A
= +25°C
V+ = 5V
R
L
= 100k⍀
COMPRESSION RATIO = 1:1
NOISE GATE SETTING
550V 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 1M10k 100k
50
40
0
30
20
10
–10
ROTATION POINT = 1.13V rms
NOISE GATE SETTING = 336V rms
R
COMP
= 40k⍀
V
IN
= 400V rms
G = 60dB
G = 40dB
G = 20dB
Figure 10b. GBW Curves vs. VCA Gain
FREQUENCY – Hz
–10
–80
20 30k100 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
= 2.2F
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
= 2.2F
SYSTEM GAIN = 0dB
R
L
= 10k⍀
COMP RATIO = 1:1
Figure 12. Large Signal Transient Response