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CXD2721Q-1

Single-Chip Digital Signal Processor for Karaoke

Sony Semiconductor 

CXD2721Q-1

Analog Characteristics (AVD0 to 6 = VDD0 to 6 = 5.0V, AVS0 to 6 = VSS0 to 8 = 0.0V,

DSP: each function = OFF, gain = 1, Ta = 25°C)

1. ADC + DAC Connection Total Characteristics

Total characteristics using the measurement circuit in Fig. 1, including the prefilter with built-in operational

amplifier and the built-in post filter. Unless otherwise specified, the measurement conditions are as given

below.

• IN ....0dB (= 2.0Vrms), 1kHz

• fs .....44.1kHz

Item

Measurement conditions

S/N ratio

EIAJ (with "A" weighting filter)

THD + N∗1

EIAJ (0dB)

EIAJ (–1dB)

EIAJ (–10dB)

Dynamic range

EIAJ

Channel separation

Level difference between channels

ADC input level∗2

Output level∗3

Analog current consumption

∗1 See Graph 1.

∗2 Input level to the ADC which outputs FS. (= prefilter output level)

∗3 Prefilter gain = –3.52dB

Min. Typ. Max. Unit

82 92

dB

0.1

0.02

%

0.013 0.03

91

dB

95

dB

0.1

dB

1.33

Vrms

1.0

Vrms

27

mA

– 10 –

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