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MC34017 Telephone Tone Ringer
Bipolar
• • • • • • • TELEPHONE TONE RINGER
BIPOLAR LINEAR/I2L
SEMICONDUCTOR TECHNICAL DATA

Linear/I2L

Complete Telephone Bell Replacement Circuit with Minimum External Components On–Chip Diode Bridge and Transient Protection Direct Drive for Piezoelectric Transducers Push Pull Output Stage for Greater Output PowerCapability Base Frequency Options – MC34017–1: 1.0 kHz – MC34017–2: 2.0 kHz – MC34017–3: 500 Hz Input Impedance Signature Meets Bell and EIA Standards Rejects Rotary Dial Transients

8 1

D SUFFIX PLASTIC PACKAGE CASE 751

8 1

Typical Application
160 k C 15 k 2.2 µF 3.0 V 5 RS AC1 1 RO1 2 MC34017–X 1.0 µF Tip 6.8 k AC1 1 RO1 2 RO2 3 RI 4 RI 4 RO2 3

P SUFFIX PLASTIC PACKAGE CASE 626 5.0 µF25 V

PIN CONNECTIONS

8 AC2 Ring

7 RG

6 RC

8 AC2 7 RG

6 RC 5 RS (Top View)

ORDERING INFORMATION
MC34017–1: C = 1000 pF MC34017–2: C = 500 pF MC34017–3: C = 2000 pF Piezo Sound Element Device MC34017D MC34017P Operating Temperature Range TA = –20° to +60°C Package SOIC Plastic DIP

This device contains 97 active transistors and 79 gates.

© Motorola, Inc. 1996

MOTOROLAANALOG IC DEVICE DATA

1

MC34017
MAXIMUM RATINGS (Voltages Referenced to RG, Pin 7)
Rating Operating AC Input Current (Pins 1, 8) Transient Input Current (Pins 1, 8) (T 0 VI < 0 Ringing Stop Voltage VStop = VI at Ring Stop MC34017–1 MC34017–2 MC34017–3 Output Frequencies (VI = 50 V) MC34017–1 High Tone MC34017–1 Low Tone MC34017–1 Warble Tone MC34017–2 High Tone MC34017–1 Low Tone MC34017–1Warble Tone MC34017–3 High Tone MC34017–1 Low Tone MC34017–1 Warble Tone Output Voltage (VI = 50 V) Output Short–Circuit Current Input Diode Voltage (II = 5.0 mA) Input Voltage – SCR “Off” (II = 30 mA) Input Voltage – SCR “On” (II = 100 mA) RS Clamp Voltage (VI = 50 V) Test Symbol Min Typ Max Unit Vdc 1a 1b 1c VStart (+) VStart (–) VStop 14 12 14 1d fH fL fW fH fL fW fH fL fW 6 2 3 4a 4b 5 VOIRO1, IRO2 VD Voff Von Vclamp 937 752 11.5 1874 1504 11.5 937 752 23 34 35 5.4 30 3.2 1.3 1010 808 12.5 2020 1616 12.5 1010 808 25 37 60 6.2 38 4.1 1.5 1083 868 14 2166 1736 14 1083 868 28 43 80 6.8 43 6.0 1.8 Vpp mApp Vdc Vdc Vdc Vdc 16 14 16 22 20 22 Hz 34 –34 37.5 –37.5 41 –41 Vdc

PIN FUNCTION DESCRIPTION
Pin 1, 8 5 4 2, 3 7 6 Symbol AC1, AC2 RS RI RO1, RO2 RG RC Description The input terminalsto the full–wave diode bridge. The ac ringing signal from the telephone line energizes the ringer through this bridge. The input of the threshold comparator to which diode bridge current is mirrored and sensed through an external resistor (R3). Nominal threshold is 1.2 V. This pin internally clamps at 1.5 V. The positive supply terminal for the oscillator, frequency divider and output buffercircuits. The tone ringer output terminals through which the sound element is driven. The negative terminal of the diode bridge and the negative supply terminal of the tone generating circuitry. The oscillator terminal for the external resistor and capacitor which control the tone ringer frequencies (R2, C2).

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MOTOROLA ANALOG IC DEVICE DATA

MC34017
APPLICATION CIRCUIT PERFORMANCE (Refer toTypical Application)
Characteristic Output Tone Frequencies MC34017–1 MC34017–2 MC34017–3 Warble Frequencies Output Voltage (VI ≥ 60 Vrms, 20 Hz) Output Duty Cycle Ringing Start Input Voltage (20 Hz) Ringing Stop Input Voltage (20 Hz) Maximum AC Input Voltage (≤ 68 Hz) Impedance When Ringing VI = 40 Vrms, 15 Hz VI = 130 Vrms, 23 Hz Impedance When Not Ringing VI = 10 Vrms, 24 Hz VI = 2.5 Vrms, 24Hz VI = 10 Vrms, 5.0 Hz VI = 3.0 Vrms, 200 – 3200 Hz Maximum Transient Input Voltage (T ≤ 2.0 ms) Ringer Equivalence: Class A Ringer Equivalence: Class B Typical Value 808/1010 1616/2020 404/505 12.5 37 50 36 21 150 >16 12 28 >1.0 55 >200 1500 0.5 0.9 kΩ MΩ kΩ kΩ V – – Vpp % Vrms Vrms Vrms kΩ Units Hz

Block Diagram
C4 RI 4 R1 Tip C1 AC1 1 Input Current Mirror Diode Bridge

Ring

AC2 8...
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