SSM2166
REV. A
–4–
0
–80
–80
0
–70
–60
–50
–40
–30
–20
–10
–10
–40
–50
–60
–70
–20
–30
T
A
= +25
°
C
V+ = 5V
V
IN
= 300mV rms @ 1kHz
R
L
= 100k
V
NOISE GATE SETTING 550µV rms
ROTATION POINT 300mV rms
GAIN ADJUST (PIN 2) = 1.25k
V
COMP RATIO = 1:1
COMP RATIO = 2:1
COMP RATIO = 5:1
COMP RATIO = 10:1
COMP RATIO = 15:1
INPUT – dBu
OUTPUT – dBu
INPUT – dBu
Figure 3. Output vs. Input Characteristics
R
GATE
– k
V
NOISE GATE – mV rms
10
1
0.1
0
450
50 100
350 400
150 200 250 300
500 550 600 650
100
T
A
= +25
°
C
V+ = 5V
R
L
= 100k
V
COMPRESSION RATIO = 2:1
ROTATION POINT 1V rms
GAIN ADJUST (PIN 2) = 1.25k
V
Figure 4. Noise Gate vs. R
GATE
(Pin 9 to V+)
COMPRESSION
RATIO
ROTATION POINT
1:1
2:1
5:1
10:1
15:1
100mV rms
0
300mV rms
0
1V rms
0
12.5
12.5
12.5
96
96
96
215
215
215
395
395
395
R
COMP
– k
V
, TYPICAL
Figure 5. Compression Ratio vs. R
COMP
(Pin 10 to GND)
GAIN – dB
GAIN ADJUST RESISTOR – k
V
20
6
0
0
26
2
4
6
8
10 12 14
16 18
20 22 24
18
8
4
2
14
10
16
12
28
30
T
A
= +25
°
C
V+ = 5V
R
L
= 100k
V
V
IN
= 100mV rms @ 1kHz
NOISE GATE SETTING 550
m
V rms
ROTATION POINT (PIN 11) 1V rms
COMPRESSION RATIO = 1:1
Figure 6. VCA Gain vs. R
GAIN
(Pin 2 to GND)
INPUT VOLTAGE – V rms
THD + N – %
5
1
0.1
0.01
1
0.1
0.05
R
L
= 10k
V
R
L
= 100k
V
T
A
= +25
°
C
V+ = 5V
COMPRESSION RATIO = 1:1
NOISE GATE SETTING 550
m
V rms
ROTATION POINT 1V rms
GAIN ADJUST (PIN 2) = 1.25k
V
V
IN
FREQUENCY = 1kHz
Figure 7. THD+N (%) vs. Input (V rms)
FREQUENCY – Hz
THD + N – %
5
1
0.1
20
30k
100
0.05
1k
10k
T
A
= +25
°
C
V+ = 5V
V
IN
= 77.5mV rms @ 1kHz
COMPRESSION RATIO = 1:1
NOISE GATE SETTING 550
m
V rms
ROTATION POINT 1V rms
GAIN ADJUST (PIN 2) = 1.2k
V
MEASUREMENT FILTER BW : 22Hz TO 30kHz
Figure 8. THD+N (%) vs. Frequency (Hz)
