INTEGRATED CIRCUITS
DATA SHEET
TDA1522
Stereo cassette head preamplifier and equalizer
Product specification |
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1996 Feb 26 |
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File under Integrated Circuits, IC01 |
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Philips Semiconductors |
Product specification |
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Stereo cassette head
TDA1522
preamplifier and equalizer
FEATURES
∙Two independent amplifiers with open-loop gain of 90 dB (typical)
∙Internal DC feedback via 140 kΩ resistor from output to feedback point
∙AC characteristics that can be determined externally by an RC network
∙Electronic on/off switching with transient suppression for switch on
∙Head input at DC ground that eliminates the input coupling capacitor
GENERAL DESCRIPTION
The TDA1522 is a playback amplifier for car radio/cassette players.
∙Minimum external component requirement
∙Stability down to a gain of 30 dB
∙Low input noise
∙Low distortion
∙DC input current <2 μA
∙Wide supply voltage range.
QUICK REFERENCE DATA
SYMBOL |
PARAMETER |
CONDITIONS |
MIN. |
TYP. |
MAX. |
UNIT |
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VP |
supply voltage (pin 8) |
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7.5 |
− |
23 |
V |
IP |
supply current (pin 8) |
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− |
5 |
− |
mA |
Tamb |
operating ambient temperature |
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−30 |
− |
+85 |
°C |
THD |
total harmonic distortion |
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− |
0.05 |
− |
% |
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αcs |
channel separation |
RS = 10 kΩ; LS = 0 |
45 |
− |
− |
dB |
ORDERING INFORMATION
TYPE |
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PACKAGE |
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NUMBER |
NAME |
DESCRIPTION |
VERSION |
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TDA1522 |
SIL9MP |
plastic single in-line medium power package; 9 leads |
SOT142-1 |
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1996 Feb 26 |
2 |
Philips Semiconductors |
Product specification |
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Stereo cassette head
TDA1522
preamplifier and equalizer
BLOCK DIAGRAM
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R102 |
R101 |
C101 |
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C102 |
8.2 Ω |
5.6 kΩ |
22 nF |
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220 |
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μF |
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TDA1522 |
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feedback 1 140 kΩ |
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3 |
R fb1 |
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C c1 |
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1 |
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output 1 |
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4 |
AMP 1 |
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10 μF |
Vo1 |
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RS1= 300 Ω |
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5 |
R L1 |
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Vi1 |
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4.7 kΩ |
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LS1 = 80 mH |
SUPPLY |
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2 |
& |
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MUTE |
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Vi2 |
RS2= 300 Ω |
MUTE |
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8 |
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LS2 = 80 mH |
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C |
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6 |
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c2output 2 |
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9 |
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7 |
AMP 2 |
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10 μF |
Vo2 |
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R fb2 |
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R L2 |
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4.7 kΩ |
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feedback 2 140 kΩ |
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R202 |
R201 |
C201 |
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C202 |
8.2 Ω |
5.6 kΩ |
22 nF |
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220 |
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VP |
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MLD337 |
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μF |
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Fig.1 Block diagram with external components; also used as test circuit.
1996 Feb 26 |
3 |
Philips Semiconductors |
Product specification |
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Stereo cassette head
TDA1522
preamplifier and equalizer
PINNING |
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SYMBOL |
PIN |
DESCRIPTION |
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Vo1 |
1 |
output voltage 1 |
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handbook, halfpage |
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Vo1 |
1 |
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MUTE |
2 |
mute input |
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FB1 |
3 |
feedback 1 |
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MUTE |
2 |
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Vi1 |
4 |
input voltage 1 |
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FB1 |
3 |
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GND |
5 |
ground |
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V i1 |
4 |
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Vi2 |
6 |
input voltage 2 |
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GND |
5 |
TDA1522 |
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FB2 |
7 |
feedback 2 |
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V i2 |
6 |
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VP |
8 |
power supply |
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FB2 |
7 |
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Vo2 |
9 |
output voltage 2 |
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VP |
8 |
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V o2 |
9 |
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MGC396 |
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Fig.2 |
Pin configuration. |
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1996 Feb 26 |
4 |
Philips Semiconductors |
Product specification |
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Stereo cassette head
TDA1522
preamplifier and equalizer
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134); note 1.
SYMBOL |
PARAMETER |
MIN. |
MAX. |
UNIT |
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VP |
supply voltage (pin 8) |
7.5 |
23 |
V |
Ifb |
feedback current (pins 3 and 7) |
- |
10 |
mA |
Ptot |
total power dissipation |
- |
800 |
mW |
Tamb |
operating ambient temperature |
-30 |
+85 |
°C |
Tstg |
storage temperature |
-55 |
+150 |
°C |
Note
1. All pins except 3 and 7 (feedback) can be connected to VP (pin 8) or ground (pin 5).
CHARACTERISTICS
VP = 8.5 V; Tamb = 25 °C; see test circuit Fig.1; unless otherwise specified.
SYMBOL |
PARAMETER |
CONDITIONS |
MIN. |
TYP. |
MAX. |
UNIT |
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Supply (pin 8) |
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VP |
supply voltage |
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7.5 |
- |
23 |
V |
IP |
supply current |
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- |
5 |
- |
mA |
Inputs (pins 4 or 6) |
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Vni(rms) |
unweighted noise input voltage |
f = 20 Hz to 20 kHz; |
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1.6 |
- |
mV |
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(RMS value) |
measured in Fig.3 |
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Vni |
noise input voltage |
RS = 0; f = 1 kHz; measured |
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5 |
- |
nV |
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in Fig.3; see also Fig.5 |
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----------- |
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Hz |
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Ini |
noise input current |
f = 1 kHz; measured in Fig.3; |
- |
1.2 |
- |
pA |
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see also Fig.6 |
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----------- |
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Hz |
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I4, I6 |
DC input current at pins 4 and 6 |
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- |
- |
-2 |
mA |
½Zi½ |
input impedance |
f = 1 kHz; note 1 |
200 |
- |
- |
kW |
Outputs (pins 1 or 9); see Fig.7 |
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Vo |
output voltage |
Vi = 0.3 mV; f = 315 Hz |
- |
0.72 |
- |
V |
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THD = 1%; f = 1 kHz |
1.0 |
- |
- |
V |
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IO |
output source current |
V2-5 ³ 7.5 V; mute off |
-5 |
-10 |
- |
mA |
VO |
DC output voltage |
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- |
3.7 |
- |
V |
Vno(rms) |
weighted noise output voltage; |
RS = 300 W; LS = 80 mH |
- |
700 |
- |
mV |
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DIN A (RMS value) |
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Vno |
weighted noise output voltage |
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CCITT (peak value) |
RS = 300 W; LS = 80 mH |
- |
1200 |
- |
mV |
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CCIR (peak value) |
RS = 300 W; LS = 80 mH |
- |
1600 |
- |
mV |
Vno |
unweighted noise output voltage; |
RS = 300 W; LS = 80 mH |
- |
1800 |
- |
mV |
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DIN 45405 (peak value) |
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½Zo½ |
output impedance |
f = 1 kHz; note 1 |
- |
- |
1 |
kW |
1996 Feb 26 |
5 |
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