CXA1911 データシートの表示（PDF） - Sony Semiconductor

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CXA1911

Dolby B Type Noise Reduction System with Playback Equalizer

Sony Semiconductor 

CXA1911Q

Electrical Characteristics

Measurement conditions

Item

Symbol (input pin, input level frequency etc.) Min. Typ. Max. Unit

TAPE IN total harmonic distortion 1

TAPE IN total harmonic distortion 2

TAPE IN total harmonic distortion 3

Decode S/N ratio

Signal handling

Cross talk TAPE IN 1 ch → 2 ch

LINE OUT offset voltage

B/C Switching noise

Playback equalizer amplifier block

120 µs FWD frequency response

70 µs FWD frequency response

Signal handling

Total harmonic distortion

S/N ratio

Output offset voltage

Cross talk between channels

Cross talk between RVS and FWD

THD1

THD2

THD3

SN1

SN2

VSH1

CT3

VOS1

VBOTU

TAPE IN –20dBm 1kHz R1=2.7k

TAPE IN –20dBm 1kHz NR B R1=2.7k

TAPE IN –20dBm 1kHz NR C R1=2.7k

No signal NR B CCIR/ARM filter

No signal NR C CCIR/ARM filter

TAPE IN 1kHz RL=2.7KΩ THD=1%

TAPE IN –24dBm 1kHz

No signal

Level at PB IN to LINE OUT, LINE OUT

PBREF PB F IN 315Hz –70dBm VPBO=0dB

F120F PB F IN 2.7 kHz -58.5 dBm for 315 Hz

F70F PB F IN 4.5 kHz -53.8 dBm for 315 Hz

F120R PB R IN 315 Hz -70 dBm for 315 Hz

VSH2 PB F IN 1kHz THD=1% RL=2.7kΩ

THD6 PB F IN 1kHz –52dBm RL=2.7kΩ

SN3 No signal "A" weighting filter ON

VOS2 No signal Rg=2.2 kΩ

CT4

TAPE IN 1kHz –42dBm

CT5

— 0.01 0.2

— 0.04 0.2 %

— 0.07 0.3

77.0 84.0 —

dB

80.0 82.0 —

13.5 14.4 — dB

— –91 –55

3.9 4.0 4.1 V

— 70 100 mV

–27.0 –25.5 –23.0 dBm

–1.5 –0.8 1.5 dB

–1.5 –0.0 1.5

dB

–1.0 –0.3 1.0

–10.0 –3.0 — dBm

— 0.11 0.5 %

57.0 61.1 — dB

1.55 1.95 2.35 V

— –80.5 –70

dB

— –77.7 –65

Interval detection between tracks (MUSIC SENSOR) block

Signal detection level 1

Signal detection level 2

VMS1

VMS2

TAPE IN 5 kHz AMS ON (G1 mode)

External constant 10 kΩ, 0.015 µF

TAPE IN 5 kHz AMS ON (G2 mode)

External constant 1 kΩ, 1.5 µF

–43.0 –39.0 –35.0

dBm

–62.5 –58.5 –54.5

MS output leak current

TAPE IN 5 kHz -10 dBm, 5 V applied to

IOH

— 0.0 1.0 µA

AMSOUT

MS output saturation voltage

TAPE IN 5 kHz -30 dBm, 1 mA applied to

VOL

— 0.3 1.0 V

AMSOUT

Logic voltage

2-value input

VIL

0.0 — 0.8

NRSW, TAPESW, DRSW, NRMODE,

V

MSSW, MSMODE

VIH

2.5 — VCC

Boost charge circuit block

PBFB boost charge current

Boost charge ON VCT level

Boost charge OFF VCT level

No signal, 3.4 V applied to VCT and 1.8 V

ICRG

1.0 3.0 — mA

to PBFB

No signal, VCT level when boost charge

VCRG1

— — 3.4

ON

V

No signal, VCT level when boost charge

VCRG2

3.6 — —

OFF

—8—

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