TELEFUNKEN Semiconductors TDA 1072 A 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 1
TDA 1072 A TELEFUNKEN Semiconductors Absolute maximum ratings Reference point pin 16, unless otherwise specified Parameters Symbol alue Unit Supply voltage Pin 13 S 20 oltage on Pin 2 2 0 to 20 RF inputs oltages Reference point 15 Pin 14 Pin 14 Pin 14 Pin 15 Pin 15 i 14/15 i i i i 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 12 s 0.6 i 0.6 Electrical Characteristics S = 8.5, 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 500 Parameters Test Conditions / Pin Symbol Min Type Max Unit Supply voltage range Pin 13 S 7.5 18 Supply current, without Pin 13 I S 23 30 ma load, I L = 0 (Pin 11) RF preamplifier and mixer DC input voltages Pin 14, 15 i S /2 Input impedances R i 5.5 k irf < 300 µ, Pin 14,15 C i 25 pf irf > 10 m, Pin 14, 15 R i C i 8.0 22 k pf Output impedance Pin 1 R o k C o 6.0 pf Maximum conversion conductance I o 1 IF/ irf S M 6.5 ma/ Maximum IF output voltage Pin 1 oif 5.0 pp Output current Pin 1 I o 1.2 ma Preamplifier control range S M 30 db Max. RF input voltage Pin 14, 15 i 2.5 pp Oscillator Frequency range Pin 12 f OSC 0.6 60 MHz Oscillator circuit impedance range Pin 12 Z LOSC 0.5 200 k 2
TELEFUNKEN Semiconductors TDA 1072 A Parameters Test Conditions / Pin Symbol Min Type Max Unit Controlled oscillator amplitude Pin 12 OSC 130 150 m DC output voltage I L = 0 Pin 11 O 6 BE(4) 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 0 320 m 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 i 2 Input impedance Pin 3 R i 2.4 3 C i 7 3.9 k pf Max. IF input voltage m = 80%, d = 3% Pin 3 i 90 m Control range 0AF = 6 db i 61 db Audio output voltage Pin 6 i = 1 m (Pin 3), 0 310 m without load Audio output resistance Pin 6 R 0 3.5 k Field-strength indication DC indicator voltages R L9 = 2.7 k, i = 0 Pin 9 i = 500 m Pin 9 O 0 O 2.5 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 output Stand-by switch AM switch-off, I 0 1 A 0 6 Switching voltage Pin 2 i 2.75 Required control voltage AM ON Pin 2 AM OFF Pin 2 Input current 1) or open input i i 1) 3.5 140 3.1 AM on, switching current AM off, reverse current ( 2 = 3 ), Pin 2 I i 200 I i 10 m 2 A A 3
TDA 1072 A TELEFUNKEN Semiconductors Operating conditions S = 8.5, 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 irf irf irf 1.5 15 150 RF input for agc operation irf 30 Control range for (Reference value i = 500 m) 0 = 6 db 0 = 1 db Maximum RF input voltage d = 3%, m = 80% d = 3%, m = 30% d = 10%, m = 30% Audio output voltage 1 = 1 m 2 = 4, m = 0.8 irf 91 irf 86 irf irf irf 0.5 0.7 0.9 310 (2 db) 130 ( 3.5 db) 0AF 0AF RF input voltage 0AF = 60 m irf 5.5 Total distortion of audio output voltage Signal plus noise to noise ratio of audio output voltage m = 80%, i = 1 m i = 500 m d d i = 1 m (S + N) N 0.5 3.0 db db m m % % 50 db IF bandwidth ( 3 db) B if 4.6 khz IF selectively f = 9 khz S if 30 db f = 36 khz S if 60 db 4
TELEFUNKEN Semiconductors TDA 1072 A Figure 2 Test circuit 5
TDA 1072 A TELEFUNKEN Semiconductors 6
TELEFUNKEN Semiconductors TDA 1072 A Dimensions in mm 7
TDA 1072 A TELEFUNKEN Semiconductors 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. arious 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 improve 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 8