SSM2167 データシートの表示（PDF） - Analog Devices

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SSM2167

Low Voltage Microphone Preamplifier with Variable Compression and Noise Gating

Analog Devices 

Data Sheet

TYPICAL PERFORMANCE CHARACTERISTICS

100

TA = 25°C

V+ = 3V

RLOAD = 100kΩ

COMPRESSION RATIO 2:1

ROTATION POINT = 63mV rms

10

1

0

500 1000 1500 2000 2500 3000 3500

RGATE (Ω)

Figure 3. Noise Gate vs. RGATE

1

TA = 25°C

V+ = 3V

VIN = 24.5mV rms

COMPRESSION RATIO 1:1

ROTATION POINT = 63mV rms

NOISE GATE SETTING = 2mV rms

0.1

0.01

20

100

1k

FREQUENCY (Hz)

Figure 4. THD + N vs. Frequency

10k 30k

35

30

25

20

15

10

5

0

–5 VIN = 2mV rms

–10

RCOMP = 175kΩ

ROTATION POINT = 63mV rms

NOISE GATE SETTING = 2mV rms

–15

1k

10k

100k

1M

10M

FREQUENCY (Hz)

Figure 5. GBW Curves vs. VCA Gain

SSM2167

1

0.1

TA = 25°C

V+ = 3V

VIN FREQUENCY = 1kHz

RLOAD = 100kΩ

COMPRESSION RATIO 1:1

ROTATION POINT = 63mV rms

NOISE GATE SETTING = 2mV rms

0.01

0.01

0.1

1

INPUT VOLTAGE (V rms)

Figure 6. THD + N vs. Input Voltage

0

COMPRESSION RATIO 10:1

–10

–20

COMPRESSION RATIO 5:1

–30

COMPRESSION RATIO 2:1

–40

COMPRESSION RATIO 1:1

–50

–60

–70

–80

–80

TA = 25°C

V+ = 3V

RLOAD = 100kΩ

ROTATION POINT = 63mV rms

NOISE GATE SETTING = 2mV rms

–70

–60

–50

–40

–30

–20

–10

INPUT (dBV)

Figure 7. Output vs. Input Characteristics

–10

V+ = 3V + 0.1

RGATE = 5kΩ

–20 RCOMP = 0Ω

–30

–40

–50

–60

–70

–80

10

100

1k

10k

FREQUENCY (Hz)

Figure 8. PSRR vs. Frequency

100k

Rev. G | Page 5 of 12

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