Dual Equalizer Amplifier
Description
HS3308
LINEAR INTEGRATED CIRCUIT
DUAL EQUALIZER AMPLIFIER WITH ALC
DESCRIPTION
The HS3308 is a monolithic integrated circuit, consisting of dual equalizer amplifier with ALC, and it is suitable for stereo radio cassette tape recorders.
SIP-9
HS 3308FL
FEATURES
*Dual equalizer amplifier with built-in ALC circuit *Low noise VNI=1.
0µV(Typical) *High open loop voltage gain: Gv=80dB(Typical) *Good ALC response balance between channels *Not necessary the input coupling capacitor *Not necessary the diode or transistor for ALC *Built in power supply muting circuit *Minimum number of external parts required
SOP-14
BLOCK DIAGRAM SIP-9
channel 1
mute
channel 2
ALC
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1 NF1
2 IN1
3 OUT1
4 GND
5 ALC
6 Vcc
7 OUT2
8 IN2
9 NF2
HS3308
SOP-14
LINEAR INTEGRATED CIRCUIT
N.
C 14 IN1 13 N.
C 12 NF1 NF2 11 mute
channel 1 channel 2
IN2 N.
C 9 8
10
ALC 1 2 3 4 ALC 5 Vcc 6 7
OUT1 GND N.
C
N.
C OUT2
ABSOLUTE MAXIMUM RATING(Ta=25°C)
PARAMETER
Supply Voltage Operating Temperature Storage Temperature Power Dissipation SIP-9 SOP-14 PD 550 450 mW
SYMBOL
VCC TOPR TSTG
VALUE
16 -20 ~ 75 -20 ~ 125
UNIT
V °C °C
ELECTRICAL CHARACTERISTICS(Ta=25°C, VCC=7V, f=1KHZ, unless otherwise specified)
PARAMETER
Quiescent Circuit Current Open Loop Voltage Gain
SYMBOL
ICCQ GVO GVC VO THD VNI RI ΔVALC CBALC
TEST CONDITIONS
VI=0 VO=0.
3V VO=0.
3V THD=1% VO=0.
3V RG=2.
2KΩ BW(-3dB)=20HZ—20KHZ
MIN
1.
5 70 45 0.
6
TYP
3.
5 80 48 1.
2 0.
1 1.
0
MAX
4.
5 50 0.
3 2.
0 45 2.
5
UNIT
mA dB dB V % µV kΩ dB dB
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Output Voltage Total Harmonic Distortion Input Noise Voltage Input Resistance ALC Range ALC Balance
15 RO=3.
9KΩ, THD=10% VI=1mV 40
25 45 0
HS3308
TEST CIRCUIT
LINEAR INTEGRATED CIRCUIT
HS3308
1 2
0.
027 µ F SW 2 SW 4 4.
3kΩ 120kΩ SW 1 15kΩ 39Ω 100 µ F SW 3 10 µ F
3
4
2.
2 µ F
5
SW 6 1MΩ
6
330 µ F
7
8
0.
027 µ F
9
3.
9kΩ
SW 7
SW 10 SW 9 120kΩ 4.
3kΩ 15kΩ 10 µF 39Ω 100 µ F SW 11
3.
9kΩ SW 5
10kΩ
~
220Ω
A
2.
2kΩ
SW 8
2.
2kΩ
C
D
...
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