TELEFUNKEN Semiconductors TDA 1072 A
1
Preliminary Information
AM Receiver Circuit
Technology: Bipolar
Features
Controlled RF preamplifier
Multiplicative balanced mixer
Separate oscillator with amplitude
control
IF amplifier with gain control
Balanced full–wave detector
Audio preamplifier
Internal AGC voltage
Amplifier for field–strength indication
Electronic stand–by on/off switch
Figure 1 Block diagram and application circuit
TELEFUNKEN Semiconductors
TDA 1072 A
2Preliminary Information
Absolute maximum ratings
Reference point pin 16, unless otherwise specified
Parameters Symbol Value Unit
Supply voltage Pin 13 VS20 V
Voltage on Pin 2 V20 to 20 V
RF inputs
Voltages
Reference point 15 Pin 14
Pin 14
Pin 14
Pin 15
Pin 15
Vi 14/15
Vi
–Vi
Vi
–Vi
12
Vs
0.6
Vi
0.6
V
V
V
V
V
RF inputs
Currents Pin 14, 15 Ii200 mA
Ambient temperature range Tamb – 30 to + 80 °C
Storage temperature range Tstg – 55 to + 150 °C
Electrical Characteristics
VS = 8.5 V, reference point pin 16, fIRF = 1MHz, RG = 50 , fmod = 0.4 kHz, m = 30%, fIF = 460 kHz, Tamb = + 25 °C,
unless otherwise specified
Parameters Test Conditions / Pin Symbol Min Type Max Unit
Supply voltage range Pin 13 VS7.5 18 V
Supply current, without
load, IL = 0 (Pin 11) Pin 13 IS23 30 mA
RF preamplifier and mixer
DC input voltages Pin 14, 15 ViVS/2 V
Input impedances ViRF < 300 µV, Pin 14,15
ViRF > 10 mV, Pin 14, 15
Ri
Ci
Ri
Ci
5.5
25
8.0
22
k
pF
k
pF
Output impedance Pin 1 Ro
Co
500 6.0 k
pF
Maximum conversion con-
ductance Io 1 IF/ViRF SM6.5 mA/V
Maximum IF output volt-
age Pin 1 VoIF 5.0 Vpp
Output current Pin 1 Io1.2 mA
Preamplifier control range SM30 dB
Max. RF input voltage Pin 14, 15 Vi2.5 Vpp
Oscillator
Frequency range Pin 12 fOSC 0.6 60 MHz
Oscillator circuit imped-
ance range Pin 12 ZLOSC 0.5 200 k
TELEFUNKEN Semiconductors TDA 1072 A
3
Preliminary Information
Parameters Test Conditions / Pin Symbol Min Type Max Unit
Controlled oscillator ampli-
tude Pin 12 VOSC 130 150 mV
DC output voltage IL = 0 V Pin 11 VO6 VBE(4V) V
Output load current range Pin 11 –IL20 mA
Output resistance IL = 5 " 0.5 mA, Pin 11 RO25 W
Oscillator frequency output Pin 10
Output voltage RL10 = 4.7 kWV0320 mVpp
Output resistance R0170 W
Allowable output current I03 mAp
IF amplifier an AF stage
DC input voltages Pin 3, 4 Vi2 V
Input impedance Pin 3 Ri
Ci
2.4 3
73.9 kW
pF
Max. IF input voltage m = 80%, d = 3% Pin 3 Vi90 mV
Control range V0AF = –6 dB DVi61 dB
Audio output voltage Pin 6
Vi = 1 mV (Pin 3),
without load V0310 mV
Audio output resistance Pin 6 R03.5 kW
Field-strength indication
DC indicator voltages RL9 = 2.7 kW,
Vi = 0 Pin 9
Vi = 500 mV Pin 9 VO
VO
0
2.5 2.8 140
3.1 mV
V
Output current capability Pin 9 –IO2.0 mA
Output resistance –I0 = 0.5 mA Pin 9 R0220 W
Reverse voltage at the out-
put AM switch-Off,
" I0 x 1 mA V06 V
Stand-by switch
Switching voltage Pin 2 Vi2.75 V
Required control voltage AM ON Pin 2
AM OFF Pin 2 Vi
Vi 1) 3.5 2 V
V
Input current AM on, switching current
AM off, reverse current
(V2 = V3), Pin 2 –Ii
"Ii
200
10 mA
mA
1) or open input
TELEFUNKEN Semiconductors
TDA 1072 A
4Preliminary Information
Operating conditions
VS = 8.5 V, fiRF = 1MHz, fmod = 0.4 kHz, m = 30%, Tamb = 25°C, reference point Pin 16, see figure 2, unless otherwise
specified
Parameters Test Conditions / Pin Symbol Min Type Max Unit
RF input voltages (S + N)/N = 6 dB
= 26 dB
= 46 dB
ViRF
ViRF
ViRF
1.5
15
150
mV
mV
mV
RF input for agc operation ViRF 30 mV
Control range for (Reference value
Vi = 500 mV)
DV0 = 6 dB
DV0 = 1 dB DViRF
DViRF
91
86 dB
dB
Maximum RF input voltage d = 3%, m = 80%
d = 3%, m = 30%
d = 10%, m = 30%
ViRF
ViRF
ViRF
0.5
0.7
0.9
V
V
V
Audio output voltage V1 = 1 mV
V2 = 4 mV, m = 0.8 V0AF
V0AF
310 (2 dB)
130 ( 3.5 dB) mV
mV
RF input voltage V0AF = 60 mV ViRF 5.5 mV
Total distortion of audio
output voltage m = 80%, Vi = 1 mV
Vi = 500 mV d
d0.5
3.0 %
%
Signal plus noise to noise
ratio of audio output volt-
age
Vi = 1 mV (S + N)
N
50 dB
IF bandwidth (–3 dB) BiF 4.6 kHz
IF selectively Df = 9 kHz
Df = 36 kHz SiF
SiF
30
60 dB
dB
TELEFUNKEN Semiconductors TDA 1072 A
5
Preliminary Information
Figure 2 Test circuit
TELEFUNKEN Semiconductors
TDA 1072 A
6Preliminary Information
TELEFUNKEN Semiconductors TDA 1072 A
7
Preliminary Information
Dimensions in mm
TELEFUNKEN Semiconductors
TDA 1072 A
8Preliminary Information
OZONE DEPLETING SUBSTANCES POLICY STATEMENT
It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to
1. Meet all present and future national and international statutory requirements and
2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on the
environment.
Of particular concern is the control or elimination of releases into the atmosphere of those substances which are known
as ozone depleting substances (ODSs).
The Montreal Protocol (1987) and its London Amendments (1990) will soon severely restrict the use of ODSs and forbid
their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these
substances.
TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of continuous
improvements to eliminate the use of any ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively
2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection
Agency (EPA) in the USA and
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.
TEMIC can certify that our semiconductors are not manufactured with and do not contain ozone depleting substances.
We reserve the right to make changes to impr ove technical design without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each customer
application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized application,
the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of, directly or
indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use.
TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 (0)7131 67 2831, Fax Number: 49 (0)7131 67 2423
