SGS Thomson Microelectronics TDA7273D, TDA7273 Datasheet
TDA7273
SINGLE CHIP STEREO CASSETTE PLAYBACK SYSTEM
WIDEOPERATINGSUPPLY VOLTAGE
(1.8V to 7V)
INPUTCOUPLINGWITHOUTCAPACITORS
BUILT-INDC STEREOVOLUMECONTROL
BUILT-INRIPPLE FILTERS
LOW QUIESCENTCURRENT
NO EXTERNAL BOUCHEROTCELL
MAX OUTPUT CURRENT70mA PEAK
DESCRIPTION
The TDA7273 is a monolithic integrated circuit
designed for portablecassette players market.
It comprises preamplifiers, DC volume control,
and headphonedrivers.
BLOCK DIAGRAM
DIP16 SO16
ORDERING NUMBERS:
TDA7273 TDA7273D
May 1997
1/9
TDA7273
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Test Conditions Unit
V
I
o
T
op
T
stg,Tj
THERMAL DATA
Symbol Description DIP-16 SO-16 Unit
R
thj-amb
Supply Voltage 9 V
S
Output Current (max) 70 mA
Operating Temperature Range -20 to 70 °C
Storage & Junction Temperature Range -40 to +150
Thermal Resistance Junction-ambient Max 100 200
°
C/W
°
C
DC CHARACTERISTICS: T
V
=0;VOLcontrol= V
IN
Terminal No
Terminal Voltage (V)
ref
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
0 1.5 1.5 1.5 1.5 2.7 1.5 0 3 1.5 1.5 1.5 1.5 1.5 1.5 1.5
TEST CIRCUIT
=25°C; VS= 3V; RL= 10KΩ (Preamplifier),RL=32Ω(Headphone);
amb
2/9
TDA7273
PIN CONNECTION
(Topview)
ELECTRICAL CHARACTERISTICS
unless otherwise specified)
=25°C, VS= 3V, f = 1KHz, RL=32ΩVol. control = 2/3V
(T
amb
ref
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
I
d
Supply Voltage 1.8 7 V
Quiescent Current 14 20 mA
Vref Reference Voltage 1.3 1.49 1.7 V
PREAMPLIFIERSECTION
G
VO
G
V
V
o
I
b
THD Total Harmonic Distortion V
C
t
E
N
SVR Ripple Rejection R
Open Loop Gain 70 dB
Close Loop Gain 30 33 35 dB
Output Voltage THD = 1% 600 850 mV
Bias Current 3 µA
= 330mVrms 0.05 0.25 %
o
Cross Talk Rg = 2.2KΩ;Vo= 330mVrms 74 dB
Output Noise Rg= 2.2KΩ;BW = 22Hzto22KHz 100
= 2.2KΩ VR= 100mVrms
g
f = 100Hz; C
SVR
= 100µF
40 50 dB
HEADPHONEDRIVER
V
o(DC)
P
o
P
o
G
V
THD Total Harmonic Distortion P
C
t
SVR Ripple Rejection V
DC Output Voltage 1.50 V
Output Power THD= 10%; 15 30 mW
Transient Output Power THD = 10% RL = 16Ω 50 mW
Close Loop Gain Po= 5mW 28 31 34 dB
= 5mW 0.2 1 %
o
Cross Talk Rg = 10KΩ;Po= 5mW 40 50 dB
= 100mVrms, f = 100Hz
r
Vol. control = 1/3V
C
= 100µF; Rg=600
SVR
ref
Ω
47 dB
Volume Control Range 66 75 dB
V
µ
3/9
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