TDA1072A.PDF

(266 KB) Pobierz
11046386 UNPDF
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
11046386.018.png 11046386.019.png
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
11046386.020.png 11046386.021.png 11046386.001.png 11046386.002.png
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
11046386.003.png 11046386.004.png 11046386.005.png 11046386.006.png
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
11046386.007.png 11046386.008.png 11046386.009.png 11046386.010.png 11046386.011.png 11046386.012.png 11046386.013.png 11046386.014.png 11046386.015.png
TELEFUNKEN Semiconductors
TDA 1072 A
Figure 2 Test circuit
Preliminary Information
5
11046386.016.png 11046386.017.png

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin