TDA7284 Datasheet, PDF (5/14 Pages) STMicroelectronics – RECORD/PLAYBACK CIRCUIT WITH ALC

TDA7284
ELECTRICAL CHARACTERISTICS (V_S = 6V, T_amb = 25°C unless otherwise specified refer to test cir-
cuit)
Symbol
V_S
I_d
En
Parameter
Supply Voltage
Quiescent Current
Input Noise
R_I
Input Resistance
G_O
Open Loop Gain
V_O
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. Typ. Max. Unit
3
12
V
4.5
8
mA
Rg = 2.2KΩ
BW = 22Hz to 22kHz
1.2
µV
30
50
70
KΩ
65
78
dB
THD < 1%
ALC OFF 1.2
1.8
V_rms
ALC ON 0.7
0.9
1.1
V_rms
V_O = 1V_rms
ALC = ON V_I = 100mV
0.1
0.5
%
0.3
1
%
∆V_O = 3dB
47
dB
ALC ON
0
2
dB
f = 120Hz, C_SVR = 33µF
V_R = 100mV, R_g = 10KΩ
ALC = Off
50
dB
ALC OFF
70
dB
I_O = <1µA
0.8
1.3
V
1.7 2.25
V
R_L = 10KΩ
0.1
0.2
V
Figure 3: Drain Current vs. Supply Voltage
Figure 4: Recording Closed Loop Gain vs.
Frequency
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