Datasheet MC34017D, MC34017P Datasheet (Motorola)

1

AC1

RO1

RO2

AC2

RI

RG

RC

RS

2

3

4

8

7

6

5

Device

Operating

Temperature Range

Package



SEMICONDUCTOR

TECHNICAL DATA

TELEPHONE TONE RINGER

ORDERING INFORMATION

MC34017D
MC34017P

TA = –20° to +60°C

SOIC

Plastic DIP

P SUFFIX

PLASTIC PACKAGE

CASE 626

8

1

PIN CONNECTIONS

Order this document by MC34017/D

1

8

D SUFFIX

PLASTIC PACKAGE

CASE 751

(Top View)

BIPOLAR LINEAR/I2L

1

MOTOROLA ANALOG IC DEVICE DATA

  

Bipolar 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 Power Capability

• 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

Typical Application

This device contains 97 active transistors and 79 gates.

Piezo Sound

Element

15 k

5.0 µF
25 V

2.2

µ

F

3.0 V

160 k

C

AC2 RG RC RS

AC1 RO1 RO2 RI

8765

1234

Ring

Tip

MC34017–1: C = 1000 pF
MC34017–2: C = 500 pF
MC34017–3: C = 2000 pF

MC34017–X

6.8 k

1.0

µ

F

 Motorola, Inc. 1996

MC34017

2

MOTOROLA ANALOG IC DEVICE DATA

MAXIMUM RATINGS

(Voltages Referenced to RG, Pin 7)

Rating Symbol Value Unit

Operating AC Input Current (Pins 1, 8) – 20 mA, RMS
Transient Input Current (Pins 1, 8) (T<2.0 ms) V

in

±300 mA, peak

Voltage Applied at RC (Pin 6) V

RC

5.0 V

Voltage Applied at RS (Pin 5) V

RS

5.0 V

Voltage Applied to Outputs (Pins 2, 3) V

O

–2.0 to V

RI

V

Power Dissipation (@ 25°C) P

D

1.0 W

Operating Ambient Temperature T

A

–20 to +60 °C

Storage Temperature T

stg

–65 to +150 °C

NOTE: ESD data available upon request.

ELECTRICAL CHARACTERISTICS (T

A

= 25°C)

Characteristic

Test Symbol Min Typ Max Unit

Ringing Start Voltage Vdc

V

Start

= VI at Ring Start

VI > 0 1a V

Start

(+) 34 37.5 41

VI < 0 1b V

Start

(–) –34 –37.5 –41

Ringing Stop Voltage 1c V

Stop

Vdc

V

Stop

= VI at Ring Stop
MC34017–1 14 16 22
MC34017–2 12 14 20
MC34017–3 14 16 22

Output Frequencies (VI = 50 V) 1d Hz

MC34017–1 High Tone f

H

937 1010 1083

MC34017–1 Low Tone f

L

752 808 868

MC34017–1 Warble Tone f

W

11.5 12.5 14

MC34017–2 High Tone f

H

1874 2020 2166

MC34017–1 Low Tone f

L

1504 1616 1736

MC34017–1 Warble Tone f

W

11.5 12.5 14

MC34017–3 High Tone f

H

937 1010 1083

MC34017–1 Low Tone f

L

752 808 868

MC34017–1 Warble Tone f

W

23 25 28

Output Voltage (VI = 50 V) 6 V

O

34 37 43 Vpp

Output Short–Circuit Current 2 I

RO1

, I

RO2

35 60 80 mApp

Input Diode Voltage (II = 5.0 mA) 3 V

D

5.4 6.2 6.8 Vdc

Input Voltage – SCR “Of f” (II = 30 mA) 4a V

off

30 38 43 Vdc

Input Voltage – SCR “On” (II = 100 mA) 4b V

on

3.2 4.1 6.0 Vdc

RS Clamp Voltage (VI = 50 V) 5 V

clamp

1.3 1.5 1.8 Vdc

PIN FUNCTION DESCRIPTION

Pin Symbol Description

1, 8 AC1, AC2 The input terminals to the full–wave diode bridge. The ac ringing signal from the telephone line energizes the

ringer through this bridge.

5 RS 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.

4 RI The positive supply terminal for the oscillator, frequency divider and output buffer circuits.

2, 3 RO1, RO2 The tone ringer output terminals through which the sound element is driven.

7 RG The negative terminal of the diode bridge and the negative supply terminal of the tone generating circuitry.
6 RC The oscillator terminal for the external resistor and capacitor which control the tone ringer frequencies (R2, C2).

MC34017

3

MOTOROLA ANALOG IC DEVICE DATA

APPLICATION CIRCUIT PERFORMANCE (Refer to Typical Application)

Characteristic Typical Value Units

Output Tone Frequencies Hz

MC34017–1 808/1010
MC34017–2 1616/2020
MC34017–3 404/505

Warble Frequencies 12.5
Output Voltage (VI ≥ 60 Vrms, 20 Hz) 37 Vpp
Output Duty Cycle 50 %
Ringing Start Input Voltage (20 Hz) 36 Vrms
Ringing Stop Input Voltage (20 Hz) 21 Vrms
Maximum AC Input Voltage (≤ 68 Hz) 150 Vrms
Impedance When Ringing kΩ

VI = 40 Vrms, 15 Hz >16
VI = 130 Vrms, 23 Hz 12

Impedance When Not Ringing

VI = 10 Vrms, 24 Hz 28 kΩ
VI = 2.5 Vrms, 24 Hz >1.0 MΩ
VI = 10 Vrms, 5.0 Hz 55 kΩ

VI = 3.0 Vrms, 200 – 3200 Hz >200 kΩ
Maximum Transient Input V oltage (T ≤ 2.0 ms) 1500 V
Ringer Equivalence: Class A 0.5 –

Ringer Equivalence: Class B 0.9 –

8

C1

R1

B

B

Bias

Ref

1

6

RO1
RO2

RS

2
3

5

AC2

AC1

RC

4RI

R2C2

C3R3

22 V

Input
Current
Mirror

Push Pull
Output Buffer

C4

Threshold

Comparator

Oscillator

Tone Frequency

Divider

Warble Frequency
Divider

SCR Transient

Clamp

Diode Bridge

Ring

Piezo
Sound
Element

Tip

Block Diagram

7RG

MC34017

4

MOTOROLA ANALOG IC DEVICE DATA

CIRCUIT DESCRIPTION

The MC34017 Tone Ringer derives its power supply by
rectifying the ac ringing signal. It uses this power to activate
a tone generator and drive a piezo–ceramic transducer. The
tone generation circuitry includes a relaxation oscillator and
frequency dividers which produce high and low frequency
tones as well as the tone warble frequency. The relaxation
oscillator frequency fo is set by resistor R2 and capacitor C2
connected to Pin RC. The oscillator will operate with fo from

1.0 kHz to 10 kHz with the proper choice of external
components (see Figure 1).

The frequency of the tone ringer output signal at RO1 and
RO2 alternates between fo/4 to fo/5. The warble rate at which
the frequency changes is fo/320 for the MC34017–1, fo/640
for the MC34017–2 and fo/160 for the MC34017–3. With a

4.0 kHz oscillator frequency, the MC34017–1 produces
800 Hz and 1000 Hz tones with a 12.5 Hz warble rate. The
MC34017–2 generates 1600 Hz and 2000 Hz tones with a
similar 12.5 Hz warble frequency from an 8.0 kHz oscillator
frequency. The MC34017–3 will produce 400 Hz and 500 Hz
tones with a 12.5 Hz warble rate from a 2.0 kHz oscillator
frequency. The tone ringer output circuit can source or sink
20 mA with an output voltage swing of 37 V peak–to–peak.
Volume control is readily implemented by adding a variable
resistance in series with the piezo transducer.

Input signal detection circuitry activates the tone ringer
output when the ac line voltage exceeds programmed
threshold level. Resistor R3 determines the ringing signal
amplitude at which an output signal at RO1 and RO2 will be
generated. The ac ringing signal is rectified by the internal
diode bridge. The rectified input signal produces a voltage
across R3 which is referenced to RG. The voltage across
resistor R3 is filtered by capacitor C3 at the input to the
threshold circuit.

Figure 1. Oscillator Period (1/fo) versus

Oscillator R2 C2 Product

0

800

1/f

o

, OSCILLATOR PERIOD ( s)

µ

R2 C2, OSCILLAT OR R2 C2 PRODUCT (µs)

600

400

200

0

100 200 300 400 500

(1/fo = 1.45 R2 C2 + 10 µs)

150 k ≤ R2 ≤ 300 k
400 pF

≤

C2 ≤ 3000 pF

When the voltage on capacitor C3 exceeds 1.2 V, the
threshold comparator enables the tone ringer output. Line
transients produced by pulse dialing telephones do not charge
capacitor C3 sufficiently to activate the tone ringer output.

Capacitors C1 and C4 and resistor R1 determine the 10 V,
24 Hz signature test impedance. C4 also provides filtering for
the output stage power supply to prevent droop in the square
wave output signal. Six diodes in series with the rectifying
bridge provide the necessary non–linearity for the 2.5 V,
24 Hz signature tests.

An internal shunt voltage regulator between the RI and RG
terminals provides dc voltage to power the output stage,
oscillator and frequency dividers. The dc voltage at RI is
limited to approximately 22 V in regulation. To protect the IC
from telephone line transients, an SCR is triggered when the
regulator current exceeds 50 mA. The SCR diverts current
from the shunt regulator and reduces the power dissipation
within the IC.

EXTERNAL COMPONENTS

R1 Line Input Resistor

R1 affects the tone ringer input impedance. It
also influences ringing threshold voltage and
limits current from line transients.
(Range: 2.0 to 10 kΩ).

C1 Line Input Capacitor

C1 ac couples the tone ringer to the telephone
line and controls ringer input impedance at low
frequencies.
(Range: 0.4 to 2.0 µF).

R2 Oscillator Resistor

(Range: 150 to 300 kΩ).

C2 Oscillator Capacitor

(Range: 400 to 3000 pF).

R3 Input Current Sense Resistor

R3 controls the ringing threshold voltage.
Increasing R3 decreases the ring–start voltage.
(Range: 5.0 to 18 kΩ).

C3 Ringing Threshold Filter Capacitor

C3 filters the ac voltage across R3 at the input
of the ringing threshold comparator. It also
provides dialer transient rejection.
(Range: 0.5 to 5.0 µF).

C4 Ringer Supply Capacitor

C4 filters supply voltage for the tone generating
circuits. It also provides an ac current path for
the 10 Vrms ringer signature impedance.
(Range: 1.0 to 10 µF).

MC34017

5

MOTOROLA ANALOG IC DEVICE DATA

S1
(Normally Open)

Figure 2. Test One

1
2

3

8
7

6

5

AC1
RO1

RO2

RI

4

AC2

RG

RC

RS

1
2

3
4

16
15

14
13

5
6

7
8

12
11

10

9

160 k*

C

15 k*

0.2

µ

F

1.0 µF

0.01

µ

F*

6.8 k*

V

I

V

O

390

Ω

0.047 µF

V

DD

V

DD

IC2

DUT

5.6 k

10 k

V

DD

0.01

µ

F

Q1

0.1

µ

F

R

12
13

9
8

11

10

200 k

f

H

f

L

f

W

IC1 – MC14011B
IC2 – MC14538B

Q1 – 2N3904

MC34017–1: R = 110 k

Ω

*

MC34017–2: R = 55 k

Ω

*

MC34017–3: R = 110 k

Ω

*

MC34017–1: C = 1000 pF*
MC34017–2: C = 500 pF*
MC34017–3: C = 1000 pF*

a. Increase VI from +33 V while monitoring VO.

V

Start

(+) equals VI when VO commences switching.

b. Decrease VI from –33 V while monitoring VO.

V

Start

(–) equals VI when VO commences switching.

c. Decrease VI from +40 V while monitoring VO.

V

Stop

equals VI when VO ceases switching.

d. Set VI to +50 V. Close S1. Measure frequencies

fH, fL and fW.

*Indicates 1% tolerance (5% otherwise)

VDD = 12 V

10 k

1/4
IC1

1/4
IC1

MC34017

6

MOTOROLA ANALOG IC DEVICE DATA

Figure 3. Test Two

1
2
3

8

7

6

5

AC1
RO1
RO2

RI

4

AC2

RG

RC

RS

160 k*

C

15 k*

0.2

µ

F

6.8 k*

DUT

*Indicates 1% tolerance (5% otherwise)

MC34017–1: C = 1000 pF*
MC34017–2: C = 500 pF*
MC34017–3: C = 1000 pF*

With VRC = 4.0 V, close S1. Switch S2 to Pin 2 and measure current
at Pin 2 (IO1). Repeatedly switch VRC between 4.0 V and 0 V until
Pin 2 current changes polarity. Measure the opposite polarity current (IO2).

S1

2.0 k

10 V

5.0 V

I

RO1

I

RO2

S2

50 V

V

RC

Calculate: I

RO2

= |IO1| + |IO2|.

Calculate: I

RO1

= |IO1| + |IO2|.

Switch S2 to Pin 3 and repeat.

Figure 4. Test Three

1
2

3

8
7

6

5

AC1
RO1

RO2

R1

4

AC2

RG

RC

RS

160 k*

C

15 k*

0.2

µ

F

V

D

390

Ω

0.047 µF

DUT

*Indicates 1% tolerance (5% otherwise)

Measure voltage at Pin 1.

MC34017–1: C = 1000 pF*
MC34017–2: C = 500 pF*
MC34017–3: C = 1000 pF*

5.0
mA

MC34017

7

MOTOROLA ANALOG IC DEVICE DATA

Figure 5. Test Four

1
2

3

8
7

6

5

AC1
RO1

RO2

RI

4

AC2

RG

RC

RS

160 k*

C

15 k*

0.2

µ

F

V

DUT

*Indicates 1% tolerance (5% otherwise)

(Each test < 30 ms)

MC34017–1: C = 1000 pF*
MC34017–2: C = 500 pF*
MC34017–3: C = 1000 pF*

a. Set I1 to 30 mA. Measure voltage at Pin 1 (V

off

).

I1

b. Set I1 to 100 mA. Measure voltage at Pin 1 (Von).

Figure 6. Test Five

1
2

3

8
7

6

5

AC1
RO1

RO2

RI

4

AC2

RG

RC

RS

160 k*

C

15 k*

DUT

*Indicates 1% tolerance (5% otherwise)

MC34017–1: C = 1000 pF*
MC34017–2: C = 500 pF*
MC34017–3: C = 1000 pF*

50 V

V

clamp

6.8 k*

Measure voltage at Pin 5 (V

clamp

).

Figure 7. Test Six

1
2

3

8
7

6

5

AC1
RO1

RO2

RI

4

AC2

RG

RC

RS

160 k*

C

15 k*

0.2

µ

F

6.8 k*

DUT

*Indicates 1% tolerance (5% otherwise)

MC34017–1: C = 1000 pF*
MC34017–2: C = 500 pF*
MC34017–3: C = 1000 pF*

S1

2.0 k

50 V

V

RC

20 k

V

O

With VRC = 4.0 V, close S1. Measure dc voltage between Pins 2 and 3
(VO1). Repeatedly switch VRC between 4.0 V and 0 V until Pins 2 and 3
change state. Measure the new voltage between Pins 2 and 3 (VO2).
Calculate: VO = |VO1| + |VO2|.

MC34017

8

MOTOROLA ANALOG IC DEVICE DATA

D SUFFIX

PLASTIC PACKAGE

CASE 751–05

ISSUE N

P SUFFIX

PLASTIC PACKAGE

CASE 626–05

ISSUE K

OUTLINE DIMENSIONS

NOTES:

1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.

4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.

5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.

SEATING
PLANE

14

58

C

K

4X P

A0.25 (0.010)MTB

SS

0.25 (0.010)MB

M

8X D

R

M

J

X 45

_

_

F

–A–

–B–

–T–

DIM MIN MAX MIN MAX

INCHESMILLIMETERS

A 4.80 5.00 0.189 0.196
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.054 0.068
D 0.35 0.49 0.014 0.019
F 0.40 1.25 0.016 0.049
G 1.27 BSC 0.050 BSC
J 0.18 0.25 0.007 0.009
K 0.10 0.25 0.004 0.009
M 0 7 0 7
P 5.80 6.20 0.229 0.244
R 0.25 0.50 0.010 0.019

____

G

NOTES:

1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.

2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).

3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.

14

58

F

NOTE 2

–A–

–B–

–T–

SEATING
PLANE

H

J

G

D

K

N

C

L

M

M

A

M

0.13 (0.005) B

M

T

DIM MIN MAX MIN MAX

INCHESMILLIMETERS

A 9.40 10.16 0.370 0.400
B 6.10 6.60 0.240 0.260
C 3.94 4.45 0.155 0.175
D 0.38 0.51 0.015 0.020

F 1.02 1.78 0.040 0.070
G 2.54 BSC 0.100 BSC
H 0.76 1.27 0.030 0.050
J 0.20 0.30 0.008 0.012
K 2.92 3.43 0.115 0.135
L 7.62 BSC 0.300 BSC
M ––– 10 ––– 10
N 0.76 1.01 0.030 0.040

__

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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
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MC34017/D

*MC34017/D*

◊