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PDF CXA1998 Data sheet ( Hoja de datos )
| Número de pieza | CXA1998 | |
| Descripción | Recording/Playback Equalizer Amplifier | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
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CXA1998AQ
Recording/Playback Equalizer Amplifier
For the availability of this product, please contact the sales office.
Description
The CXA1998AQ is an IC developed for analog
signal processing in tape recorders. Processing for
both the recording and playback systems is
achieved on one chip.
48 pin QFP (Plastic)
Features
• 11-bit serial data interface
• Recording/playback mute function
• Recording equalizer Gp and Fp can be adjusted
externally.
• AGC (Automatic Gain Control)
• Comparator for AMS (Automatic Music Sensor)
• Recording/playback equalizer amplifier with 1.7
times speed switching
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage
VCC, VDD 12
V
• Operating temperature Topr –20 to +75 °C
• Storage temperature Tstg –65 to +150 °C
• Allowable power dissipation
PD 645 mW
Structure
Bipolar silicon monolithic IC
Applications
All analog signal processing in the cassette decks
of tape recorders and compact music centers
Applicable Head
Applicable to MITSUMI ELECTRIC Co., Ltd.
Playback head: BP-7442-CP-6973
Recording/playback head: BC-9242-CB-9267
Operating Conditions
Supply voltage
VCC
VDD
6.5 to 10.0 V
4.5 to 5.5 V
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E96802A78
1 page  
CXA1998AQ
Pin
No.
Symbol
DC
voltage
I/O I/O
resistance
9 AMS GAIN 3.5V — —
Equivalent circuit
VCC
10µ
VCC
9
147
100k
GND
GND
Description
Connects a resistor
for determining AMS
signal detection level
and a capacitor for
determining HPF cut-
off frequency.
10 AMS GND 0.0V — —
10
Vcc Vcc
GND
Vcc
AMS block ground.
11 AMS TC 8.0V — —
12 AMS OUT 8.0V O —
11
147
1k
GND
Connects time
constant for AMS
detection.
GND
Vcc Vcc
Vcc
12
10k
GND GND
AMS output.
No signal detection:
High
Signal detection: Low
–5–
5 Page 
CXA1998AQ
Item Measurement conditions
Reference input level
NORM – NS, 315Hz, input level at which
reference output can be obtained
Reference output level NORM – NS, 315Hz
Channel balance
NORM – NS, 315Hz, output level
difference 1ch-2ch for –26.7dBm input
NORM – NS
f = 3kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
NORM – NS
f = 8kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
NORM – NS
f = 12kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
CrO2 – NS
f = 3kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
CrO2 – NS
f = 8kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
CrO2 – NS
f = 12kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
METAL – NS
f = 3kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
METAL – NS
f = 8kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
METAL – NS
f = 12kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
NORM – HS
f = 5kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
NORM – HS
f = 15kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
NORM – HS
f = 20kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
CrO2 – HS
f = 5kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
CrO2 – HS
f = 15kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
CrO2 – HS
f = 20kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
METAL – HS
f = 5kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
METAL – HS
f = 15kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
METAL – HS
f = 20kHz at NORM – NS,
frequency response 315Hz, reference output –20dB
Min.
–28.2
—
–1.5
–1.8
3.4
8.7
3.7
9.9
14.8
4.7
8.7
12.9
–1.6
7.6
11.9
5.2
14.1
16.7
6.8
13.7
16.9
Typ.
–26.7
–10.0
0.0
–0.6
5.2
11.7
4.9
11.4
17.6
5.9
10.2
15.2
0.2
9.7
14.9
6.4
16.2
19.7
8.0
15.5
19.4
Max. Unit
–25.2
—
dBm
1.5
0.6
7.0
14.7
6.1
12.9
20.4
7.1
11.7
17.5 dB
2.2
11.8
17.4
7.6
18.3
22.7
9.2
17.3
21.9
– 11 –
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet CXA1998.PDF ] | |
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