U4074B TEMIC | Alldatasheet

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Technical content

Features

/C0068Suitable for specifications FTZ 1TR2 and ETR 2 /C0068Rectifier bridge /C0068Z-diode /C0068Amplitude detection /C0068Supply voltage for microcomputer 3.5 @ /C0118 1.5 mA /C0068DC operation possible /C0068Bridge push-pull output stage /C0068CMOS-compatible microcomputer interface /C00682-bit log. volume adjustment /C0068High-voltage bipolar technology, 30 V Benefits /C0068/C0109C controlled melody and volume /C0068Low number of external components Control VRef Decoder and DA converter TH 10 (12) 2f3(4) 4(5)VDD 130 k

47 F22 F

2(3) VB (1)1 (16)14 +VB +V B 12(14) 11(13) PIEZO Transducer A1 A0 V olume DCV 8(10) 9(11) 0.8 F 2.2 k a b Ringing signal 93 7793 e On/Off /C0087 /C0109 /C0109 /C0087 /C0109 a/C0512 b/C0512 Figure 1. Block diagram and application circuit (pin connections for SO16 in brackets)

Rev. A1, 06-May-96 Preliminary Information 2 (6) Pin Configuration 94 7904 e NC TH DD GND V MelNC V B DCV DCV a/C0512 b/C0512 14 V TH Mel V GND B DC VDC VDD 94 7903 e a/C0512 b/C0512 Pin Symbol Function 1, 14 (1,16) a/C0512, b/C0512 AC ringing signal input 2 (3) V B Output to charging capacitor 3 (4) TH Comparator threshold adjust- ment input 4 (5) 2f Output for frequency detection 5, 6 (6, 7) A1, A0 Digital volume adjustment in- put 7 (9) Mel Input for melody signal 8, 9 (10, 11) V DC DC supply diode connections 10 (12) V DD Microcomputer supply voltage 11, 12 (13, 14) O 1, O2 Outputs to the transducer 13 (15) GND Ground (2, 8) NC Not connected Pin Description Power supply a/C0512 and b/C0512, Pin 1, 14 An ac ringing voltage is supplied to the inputs a/C0512 and b/C0512 via a 0.8 /C0109F decoupling capacitor connected in series with a 2.2 kΩ . resistor 3. The circuit possesses the following overload resis- tance at terminals a and b.The circuit can withstand a voltage of 110 V with a frequency of 50 Hz at terminals a and b for a maximum of 15 s. 4. Testing the circuit with the configuration shown in figure 2 does not destroy the circuit under the following conditions. Charging voltage of surge capacitance: V cs = 2 kV Pulse shape: 10/700 /C0109s Pulse sequence: 30 s Number of surges: 10 Polarity change after 5 surges See figure 2. Smoothing Capacitors, Pin 2, 10 After rectification of the ac ringing voltage via the integrated rectifier bridge, the pulsating DC voltage is smoothed by the external capacitor (22 /C0109F to 47 /C0109F) at Pin 2 (3). The charging voltage is restricted to a maximum of 30 V by an integrated Z-diode. A 47 /C0109F external capacitor of will smooth the regulated supply, V DD , at pin 10 (12).

Rev. A1, 06-May-96 Preliminary Information 4 (6) Absolute Maximum Ratings Reference point, Pin 13 (15), unless otherwise specified, Tamb = 25°C Parameters Symbol Value Unit Supply current Pin 1, 14 (1, 16) Is 50 mA Output current Pin 11, 12 (13,14) I0 50 mA Junction Temperature Tj 125 °C Ambient temperature Tamb –25 to +60 °C Storage temperature Tstg –40 to +125 °C Power dissipation Tamb = 60°C DIP14 SO16 Ptot Ptot 860 400 mW mW Thermal Resistances Parameters Symbol Value Unit Junction ambient DIP14 SO16 R thJA 75 160 K/W K/W

Electrical Characteristics

Tamb = –10 to 60°C, reference point is Pin 13 (15), unless otherwise specified Parameters Test Conditions / Pins Symbol Min. Typ. Max. Unit Current consumption Pin 1, 14 (1, 16) O 1 = O2 = open A1 = A0 = 0, VB = 15 V IDD = –300 /C0109A, Pin 2 (3) open I 1.1 1.4 mA Input voltage Pin 1, 14 (1, 16) on threshold off threshold V 9.5 4.5 10.5 5.5 11.5 6.5 V V Audio frequency impedance f = 300 to 3400 Hz, V a,b = 1.5 Vrms R 200 k/C0087 Output on resistance I(O1, O2) = /C003420 mA R on 400 /C0087 Internal voltage limitationIZ = 1 mA (Pin 2) V Z 25 27 30 V Supply voltage for microcomputer Leakage current V a/C0512, Vb/C0512, VB /C0118 3.5 V I2f IA0 IA1 I 10 /C0109A VA1 , VA0 , VMelody /C0118 6 V

5.5 V /C0118 VDD /C0118 6 V

0 V /C0118 VDD /C0118 5.5 V IDD 100 /C0109A Diode load current 80 mA

Rev. A1, 06-May-96 5 (6) Order Information Extended Type Number Package Remarks U4070B-FP SO16 U4074B DIP14 Dimensions in mm

Rev. A1, 06-May-96 Preliminary Information 6 (6) 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. 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. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances (ODSs). The Montreal Protocol (1987) and its London Amendments (1990) intend to 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 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 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 ozone depleting substances and do not contain such substances. We reserve the right to make changes to improve technical design and may do so 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