SSM2165-1 データシートの表示（PDF） - Analog Devices

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SSM2165-1

Microphone Preamplifier with Variable Compression and Noise Gating

Analog Devices 

SSM2165–Typical Performance Characteristics

260

240 TA ؍25؇C

220

VS ؍5V

RL ؍100k⍀

200

180

160

140

120

100

80

60

40

20

0

1:1

2:1

SSM2165–1

SSM2165–2

5:1

10:1

COMPRESSION RATIO

15:1

TPC 1. Compression Ratio vs. RCOMP

5␮V

1s

100

90

10 TA ؍25؇C

0% COMPRESSION RATIO ؍15:1

NOISE BW ؍20kHz

TPC 4. Wideband Output Noise

5

TA ؍25؇C

COMP RATIO ؍1:1

RL ؍100k⍀/10k⍀

VS ؍5V

1

SSM2165–1

SSM2165–2

0.1

0.050

0.01

0.1

1

INPUT – V rms

TPC 2. THD + N (%) vs. Input (V rms)

70

60

COMP RATIO ؍15:1

RCOMP ؍0

50

VIN ؍40␮V rms

40

30

20

G = 18dB

10

G = 8dB

0

–10

–20

1k

10k

100k

1M

FREQUENCY – Hz

TPC 5. GBW Curves vs. VCA Gain

5 TA ؍25؇C

VS ؍5V

COMP RATIO ؍1:1

VIN – ؍20dBu (–1)

VIN – ؍30dBu (–2)

RL ؍100k⍀

1

SSM2165–1

0.1

SSM2165–2

0.050

20

100

1k

FREQUENCY – Hz

10k

30k

TPC 3. THD + N (%) vs. Frequency (Hz)

–30

–40

–50

V+ ؍5؎1V p-p

–60

–70

20

100

1k

FREQUENCY – Hz

10k 30k

TPC 6. PSRR vs. Frequency, Referred to Input

–4–

REV. B

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