Telephone Tone Ringer Bipolar Linear/I2L - Freescale Semiconductor
Description
Freescale Semiconductor Technical Data
MC34017A Rev 3.
0, 3/2006
Telephone Tone Ringer Bipolar Linear/I2L
Features • 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 • 34017A-1: 1.
0 kHz • 34017A-2: 2.
0 kHz • 34017A-3: 500 Hz • Input Impedance Signature Meets Bell and EIA Standards • Rejects Rotary Dial Transient
34017A
TELEPHONE TONE RINGER BIPOLAR LINEAR/I2
D SUFFIX 98A42564B 8-LEAD SOIC
P SUFFIX 98A42420B 8-LEAD DIP
ORDERING INFORMATION
Device MC34017AD/DR2 MC34017AP
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Temperature Range (TA) -20°C to 60°C
Package 8 SOIC 8 Plastic DIP
160 K C 15 K 8 7 AC2 RG Ring 34017A Tip 1.
0 mF 6.
8 K AC1 R01 R02 RI 1 2 3 4 6 RC 5 RS + 2.
2 mF 3.
0 V
5.
0 mF 25 V
34017A-1: C=1000 pF 34017A-2: C=500 pF 34017A-3: C=2000 pF
Piezo Sound Element
This device contains 97 active transistors and 79 gates
Figure 1.
34017A Simplified Application Diagram There are no disclaimers required on the Final publication of a data sheet.
© Freescale Semiconductor, Inc.
, 2006.
All rights reserved.
INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
Figure 2.
34017A Simplified Internal Block Diagram
34017A
2
Analog Integrated Circuit Device Data Freescale Semiconductor
TERMINAL CONNECTIONS
TERMINAL CONNECTIONS
AC1 R01 R02 RI
1 1
8 7 6 5
AC2 RG RC RS
2 3 4
Figure 3.
34017A Terminal Connections Table 1.
34017A Terminal Definitions
Terminal Number 1, 8 5 Terminal Name AC1, AC2 RS Terminal Function Formal Name Definition The input terminals to 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 Terminal internally clamps at 1.
5 V.
The positive suppl...
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