tda1072a, rozne, datasheets -y
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TELEFUNKEN Semiconductors
TDA 1072 A
AM Receiver Circuit
Technology:
Bipolar
Features
Balanced full–wave detector
Multiplicative balanced mixer
Audio preamplifier
Separate oscillator with amplitude
control
Internal AGC voltage
Amplifier for field–strength indication
IF amplifier with gain control
Electronic stand–by on/off switch
Figure 1 Block diagram and application circuit
Preliminary Information
1
Controlled RF preamplifier
TDA 1072 A
TELEFUNKEN Semiconductors
Absolute maximum ratings
Reference point pin 16, unless otherwise specified
Parameters
Symbol
Value
Unit
Supply voltage
Pin 13
V
S
20
V
Voltage on Pin 2
V
2
0 to 20
V
RF inputs
Voltages
Reference point 15
Pin 14
Pin 14
Pin 14
Pin 15
Pin 15
V
i
14/15
V
i
–V
i
V
i
–V
i
12
V
s
0.6
V
i
0.6
V
V
V
V
V
RF inputs
Currents
Pin 14, 15
I
i
200
mA
Ambient temperature range
T
amb
– 30 to + 80
°
C
Storage temperature range
T
stg
– 55 to + 150
°
C
Electrical Characteristics
V
S
= 8.5 V, reference point pin 16, f
IRF
= 1MHz, R
G
= 50
, f
mod
= 0.4 kHz, m = 30%, f
IF
= 460 kHz, T
amb
= + 25
°
C,
unless otherwise specified
Parameters
Test Conditions / Pin
Symbol
Min
Type
Max
Unit
Supply voltage range
Pin 13
V
S
7.5
18
V
Supply current, without
load, I
L
= 0 (Pin 11)
Pin 13
I
S
23
30
mA
RF preamplifier and mixer
DC input voltages
Pin 14, 15
V
i
V
S
/2
V
Input impedances
R
i
C
i
R
i
C
i
5.5
25
8.0
22
pF
k
V
iRF
< 300
m
V, Pin 14,15
pF
V
iRF
> 10 mV, Pin 14, 15
Output impedance
Pin 1
R
o
C
o
500
k
pF
6.0
Maximum conversion con-
ductance
I
o
1
IF
/V
iRF
S
M
6.5
mA/V
Maximum IF output volt-
age
Pin 1
V
oIF
5.0
V
pp
Output current
Pin 1
I
o
1.2
mA
Preamplifier control range
S
M
30
dB
Max. RF input voltage
Pin 14, 15
V
i
2.5
V
pp
Oscillator
Frequency range
Pin 12
f
OSC
0.6
60
MHz
Oscillator circuit imped-
ance range
Pin 12
Z
LOSC
0.5
200
k
2
Preliminary Information
k
TELEFUNKEN Semiconductors
TDA 1072 A
Parameters
Test Conditions / Pin
Symbol
Min
Type
Max
Unit
Controlled oscillator ampli-
tude
Pin 12
V
OSC
130
150
mV
DC output voltage
I
L
= 0 V
Pin 11
V
O
6 V
BE(4V)
V
Output load current range
Pin 11
–I
L
20
mA
Output resistance
I
L
= 5
0.5 mA, Pin 11
R
O
25
Oscillator frequency output
Pin 10
Output voltage
R
L10
= 4.7 k
V
0
320
mV
pp
Output resistance
R
0
170
Allowable output current
I
0
3
mA
p
IF amplifier an AF stage
DC input voltages
Pin 3, 4
V
i
2
V
Input impedance
Pin 3
R
i
C
i
2.4
3
7
3.9
pF
Max. IF input voltage
m = 80%, d = 3% Pin 3
V
i
90
mV
Control range
V
0AF
= –6 dB
V
i
61
dB
Audio output voltage
Pin 6
V
i
= 1 mV (Pin 3),
without load
V
0
310
mV
Audio output resistance
Pin 6
R
0
3.5
k
Field-strength indication
DC indicator voltages
R
L9
= 2.7 k
,
V
i
= 0
Pin 9
V
O
V
O
0
2.5
140
3.1
mV
V
V
i
= 500 mV
Pin 9
2.8
Output current capability
Pin 9
–I
O
2.0
mA
Output resistance
–I
0
= 0.5 mA
Pin 9
R
0
220
Reverse voltage at the out-
put
AM switch-Off,
1
A
V
0
6
V
Stand-by switch
Switching voltage
Pin 2
V
i
2.75
V
Required control voltage
AM ON
Pin 2
V
i
V
i
1)
2
V
V
AM OFF
Pin 2
3.5
Input current
AM on, switching current
AM off, reverse current
(V
2
= V
3
),
Pin 2
–I
i
200
10
A
I
i
A
1)
or open input
Preliminary Information
3
k
I
0
TDA 1072 A
TELEFUNKEN Semiconductors
Operating conditions
V
S
= 8.5 V, f
iRF
= 1MHz, f
mod
= 0.4 kHz, m = 30%, T
amb
= 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
V
iRF
V
iRF
V
iRF
1.5
15
150
V
V
V
RF input for agc operation
V
iRF
30
V
Control range for
(Reference value
V
i
= 500 mV)
V
0
= 6 dB
V
iRF
91
86
dB
dB
V
0
= 1 dB
V
iRF
Maximum RF input voltage d = 3%, m = 80%
d = 3%, m = 30%
d = 10%, m = 30%
V
iRF
V
iRF
V
iRF
0.5
0.7
0.9
V
V
V
Audio output voltage
V
1
= 1 mV
V
2
= 4
V
0AF
V
0AF
310 (
2 dB)
mV
mV
V, m = 0.8
130 (
3.5 dB)
RF input voltage
V
0AF
= 60 mV
V
iRF
5.5
V
Total distortion of audio
output voltage
m = 80%,
V
i
= 1 mV
V
i
= 500 mV
d
d
0.5
3.0
%
%
Signal plus noise to noise
ratio of audio output volt-
age
V
i
= 1 mV
(S + N
)
N
50
dB
IF bandwidth (–3 dB)
B
iF
4.6
kHz
IF selectively
f =
9 kHz
S
iF
S
iF
30
60
dB
dB
f =
36 kHz
4
Preliminary Information
TELEFUNKEN Semiconductors
TDA 1072 A
Figure 2 Test circuit
Preliminary Information
5
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