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PDF CXA2002 Data sheet ( Hoja de datos )
| Número de pieza | CXA2002 | |
| Descripción | 2-channel Recording/Playback Amplifier | |
| Fabricantes | Sony Corporation | |
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CXA2002R
2-channel Recording/Playback Amplifier
Description
The CXA2002R is a bipolar IC developed as
recording/playback amplifiers for Hi8 VCRs.
48 pin LQFP (Plastic)
Features
• Recording/playback system
• Wideband recording/playback amplifier for Hi8
VCR
• Supports electronic volume (EVR) control (3V)
• Recording system
• Recording amplifier feedback dumping circuit and
its EVR control function facilitates printed circuit
board design.
• Five-input (Y, chroma, AFM, ATF and PCM) mix
amplifier and EVR control function of Y and low-
band recording level
• Ramp circuit for the recording amplifier output
bias current
• Playback system
• Playback amplifier feedback dumping circuit
facilitates printed circuit board design.
• Middle-band compensation circuit (middle tune)
and independent adjustments of the center
frequency, Q and boost by EVR
• RFAGC and dropout detection circuits
Application
8 mm VCR
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings
• Supply voltage
VCC
7
• Operating temperature
Topr
–10 to +75
• Storage temperature
Tstg –65 to +150
• Allowable power dissipation PD
1100
(when mounted on the printed circuit board)
V
°C
°C
mW
Recommended Operating Condition
• Supply voltage
• Vcc EVR voltage
4.75
+0.5
–0.25
3.15 ±0.15
V
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–
E95201-ST
1 page  
Pin
No.
Symbol
Pin
voltage
9 RFAGCTC
—
10 RFAGCIN
—
11 DOCDET
2.5
CXA2002R
Equivalent circuit
143
9
25µ 25µ 50µ
50µ
13p 143
10
50k
50µ 3.25V
4.15V
Description
4700p
9 Vcc
470k
Pin to apply time constant of
RFAGC.
EVR adjustment of RFAGC
gain is possible.
( )Adjustment range:
2.5V to 4.75V
Gain:
Small to Large
RFAGC input pin for the
playback Y signal.
Playback VIDEO signal output
to Pin 14 (MTOUT) is input
again to Pin 10 (RFAGCIN)
via external ATF TRAP, AFM
TRAP and C TRAP.
DC component is cut by
built-in C.
47k
143
11
79k
50µ
Pin to determine the dropout
detection level.
12 DOP
H: 3.15
L: 0
3.15V
150
12
2.4k
1.3m
Output pin for the dropout
detection signal.
High upon dropout.
–5–
5 Page 
Pin
No.
Symbol
Pin
voltage
38 RECPCM
2.4
39 VREG
4.15
Equivalent circuit
25µ
6k
220µ
38
180µ
10k
39
5p
CXA2002R
Description
Output pin for the recording
PCM path.
The recording PCM signal and
the recording ATF signal are
mixed and output.
4.15V regulator output pin.
40 VPVTRIN
2.45
20µ
40µ
143
40
50k
2.45V
VPSW input pin for the
recording VIDEO path.
The Pin 41 signal is input
after cutting its DC
component with external C.
41 RECVIDEO 2.4
40µ
41
6k
220µ
300µ
Output pin for the recording
VIDEO path.
The recording (Y + C + AFM +
ATF) mix signal is output.
– 11 –
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet CXA2002.PDF ] | |
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