SM6451 datasheet(9/12 Pages) NPC

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SM6451BV

NIPPON PRECISION CIRCUITS—9

ANALOG PERFORMANCE CHARACTERISTICS

DVDD = AVDD = 3.0 V, 100 k

Ω output load resistance, Ta = 25 °C

Figure 3. THD + N vs. input amplitude

Figure 4. THD + N vs. input frequency

Figure 5. Attenuation error

Figure 6. Attenuation characteristic (– 64dB to MUTE)

Figure 7. Residual noise vs. ATT

Figure 8. Frequency response

0.001

0.01

0.1

VIN(Vrms)

1.2

VDD=2.7V

f=1kHz

ATT=0dB

20kHz LPF

VDD=3.0V

VDD=3.3V

0.1

0.001

0.01

10k

20k

100

Frequency(Hz)

ATT=0dB

20kHz LPF

VIN=0.8Vrms

VIN=0.5Vrms

VIN=0.2Vrms

-5

-4

-3

-2

-1

-80

-70

-60

-50

-40

-30

-20

-10

ATT(dB)

VIN=0.8Vrms

f=1kHz

-92

-88

-84

-80

-76

-72

-68

-64

-80

-76

-72

-68

-64

Mute

Ideal Gain

ATT(dB)

VDD=2.5V

VDD=2.7V

VDD=3V

-80

-70

-60

-50

-40

-30

-20

-10

ATT(dB)

VIN=0Vrms

A-Weight Filter

-100

+10

-90

-80

-70

-60

-50

-40

-30

-20

-10

100

Frequency(Hz)

ATT=-80dB

ATT=MUTE

10k

100k 200k

ATT=-60dB

ATT=-40dB

ATT=-20dB

ATT=0dB

VIN=0.8Vrms

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