cxa1878q Sony Electronics, cxa1878q Datasheet - Page 31

• Manufacturer Part Number: cxa1878q
• Description: Dolby B-c Type Noise Reduction System With Recording/playback Equalizer Amplifier
• Manufacturer: Sony Electronics

Example of Representative Characteristics
–10.0
–10.0
30.0
20.0
10.0
40.0
30.0
20.0
10.0
0.0
0.0
–2
–4
–6
8
6
4
2
0
Recording equalizer amplifier frequency response
V
0dB = NORM - NORM, 315Hz, –23dBv (Output reference)
–2.0
CC
V
0dB = NORM - NORM, 315Hz, –23dBv (Output reference)
GP = 5.0V
, V
Output level vs. REC CAL pin voltage
CC
EE
, V
REC CAL and GP CAL frequency response
2.5V
0.0V
(Tape) (Speed)
REC CAL and GP CAL = Open
(Tape) (Speed)
NORM - NORM
METAL - NORM
–1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0
EE
= ±7.0V
CrO
315Hz
8kHz
= ±7.0V
2
100
- NORM
REC CAL = 5.0V
REC CAL = 2.5V
REC CAL = 0.0V
100
REC CAL pin voltage [V]
(NORMAL SPEED)
Frequency [Hz]
Frequency [Hz]
1k
V
MODE: NORM - NORM
0dB = REC CAL and
CC
1k
, V
–20dB (at 315Hz,–3dBv)
GP CAL pin = Open
EE
(Tape) (Speed)
GP CAL pin = Open
= ±7.0V
10k
10k
– 31 –
100k
100k
–10.0
30.0
20.0
10.0
0.0
–2
–4
–6
8
6
4
2
0
Recording equalizer amplifier frequency response
–2.0
V
0dB = NORM - NORM, 315Hz, –23dBv (Output reference)
CC
Output level vs. GP CAL pin voltage
, V
EE
–1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0
(Tape) (Speed)
NORM - HIGH
METAL - HIGH
= ±7.0V
CrO
315Hz
3kHz
8kHz
12kHz
100
2
- HIGH
GP CAL pin voltage [V]
V
MODE: NORM - NORM REC CAL pin = Open
0dB = REC CAL pin and GP CAL pin = Open
CC
(HIGH SPEED)
, V
Frequency [Hz]
–20dB (at 315Hz,–3dBv)
EE
(Tape) (Speed)
= ±7.0V
1k
10k
CXA1878Q
100k