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PDF TDA7284D Data sheet ( Hoja de datos )
| Número de pieza | TDA7284D | |
| Descripción | RECORD/PLAYBACK CIRCUIT WITH ALC | |
| Fabricantes | ST Microelectronics | |
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TDA7284
RECORD/PLAYBACK CIRCUIT WITH ALC
WIDE OPERATING SUPPLY VOLTAGE (3V
to 12V)
VERY LOW INPUT NOISE (VI = 1.2µV)
INTERNAL COMPENSATION FOR HIGH
GAIN APPLICATION (DOUBLE SPEED RE-
CORDING)
BUILT-IN ALC CIRCUITRY
GOOD SVR
DC CONTROLLED SWITCHES FOR MUTE
OR EQUALIZATION SWITCHING FUNC-
TIONS
DESCRIPTION
The TDA7284 is a monolithic integrated circuit in
a DIP/SO-14designed for 6V, 9V and 12V AC/DC
portable cassette equipment application.
BLOCK DIAGRAM
DIP14
SO14
ORDERING NUMBER:
TDA7284
TDA7284D
May 1997
1/14
1 page  
TDA7284
ELECTRICAL CHARACTERISTICS (VS = 6V, Tamb = 25°C unless otherwise specified refer to test cir-
cuit)
Symbol
VS
Id
En
Parameter
Supply Voltage
Quiescent Current
Input Noise
RI Input Resistance
GO Open Loop Gain
VO Output Voltage
THD
Total Harmonic Distortion
CB
SVR
ALC Range
Channel Balance
Supply Voltage Rejection
CS
Pin 3
Pin 3
Pin 3
Cross-talk
Turn Off Threshold
Turn On Threshold
Turn On Saturation
Test Condition
Min.
3
Rg = 2.2KΩ
BW = 22Hz to 22kHz
THD < 1%
ALC OFF
ALC ON
VO = 1Vrms
ALC = ON VI = 100mV
∆VO = 3dB
ALC ON
f = 120Hz, CSVR = 33µF
VR = 100mV, Rg = 10KΩ
ALC = Off
ALC OFF
IO = <1µA
30
65
1.2
0.7
0.8
RL = 10KΩ
Typ.
4.5
1.2
50
78
1.8
0.9
0.1
0.3
47
0
50
70
1.3
1.7
0.1
Max.
12
8
70
1.1
0.5
1
2
2.25
0.2
Unit
V
mA
µV
KΩ
dB
Vrms
Vrms
%
%
dB
dB
dB
dB
V
V
V
Figure 3: Drain Current vs. Supply Voltage
Figure 4: Recording Closed Loop Gain vs.
Frequency
5/14
5 Page 
Figure 22: Application Circuit with Output Muting
TDA7284
SVR
A refernce circuit is enclosed to provide a stable
voltage and to supply a stable current to all cur-
rent mirrors.
SVR capacitor is also connected to this block for
good ripple rejection.
11/14
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet TDA7284D.PDF ] | |
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