CXA1797 SONY [Sony Corporation], CXA1797 Datasheet - Page 18

• Manufacturer Part Number: CXA1797
• Description: Dolby B-C Type Noise Reduction System with Recording Equalizer Amplifier
• Manufacturer: SONY [Sony Corporation]

DOLBY
DOLBY
DOLBY
DOLBY
DOLBY
DOLBY
DOLBY
DOLBY
Logic
Logic
Logic
Logic
Logic
Logic
Logic
Logic
Logic
Logic
Block
Dolby C total harmonic distortion
REC mode
Dolby C S/N ratio
PB mode
Recording
REC mode
Playback
REC mode
Channel crosstalk
PB mode
Channel crosstalk
REC mode
Output DC offset voltage 1
(REC OUT pin)
REC mode
Output DC offset voltage 2
(REC OUT pin)
High level input voltage
Low level input voltage
Clock frequency
Clock pulse width
Data setup time
Data hold time
Latch pulse width
Latch setup time
Latch hold time
Reset pulse width
recording crosstalk
playback crosstalk
Item
REC, Dolby C mode
Input a 1 kHz, +10 dB signal to the REC IN pin and measure
the distortion. (Measure the distortion as THD + N.)
REC, Dolby C mode, Rg = 5.1 kΩ
With no signal, measure the noise using the CCIR/ARM
filter. (The measured value is indicated as the relative
value compared to the DOLBY OUT level.)
PB, NR off mode
Input a 1 kHz, +10 dB signal to the REC IN pin and
measure the REC
REC, NR off mode
Input a 1 kHz, +10 dB signal to the NR PB IN pin and
measure the PB
PB, NR off mode
Input a 1 kHz, +10 dB signal to the REC IN pin and
measure the channel crosstalk. (Use a 1 kHz BPF.)
PB, NR off mode
Input a 1 kHz, +10 dB signal to the NR PB IN pin and
measure the channel crosstalk. (Ues a 1 kHz BPF.)
REC mode, NR off
With no signal, measure the deviation in the output DC
offset voltage at the REC OUT pin when switching from
NR off mode to B type mode.
REC mode, NR off
With no signal, measure the deviation in the output DC
offset voltage at the REC OUT pin when switching from
NR off mode to C type mode.
ViH
ViL
fck
tw
tsu(DATA CLK)
tH(CLK DATA)
tw(DATA)
ts(LATCH DATA)
tH(CLK LATCH)
tw(XRST)
—18—
REC crosstalk. (Use a 1 kHz BPF.)
PB crosstalk. (Use a 1 kHz BPF.)
B type
C type
Conditions
–100
–100
60.0 61.0
3.5
Min. Typ. Max.
—
—
—
—
—
—
—
1
1
1
1
1
1
1
Specifications
0.08
–79
–90
–84
–85
—
—
—
—
—
—
—
—
—
—
—
—
–70
–70
–65
–65
100
100
500
0.3
1.5
CXA1797Q
—
—
—
—
—
—
—
—
—
kHz
mV
mV
Unit
dB
dB
dB
dB
dB
µs
µs
µs
µs
µs
µs
µs
%
V
V