MC34017A Freescale Semiconductor, MC34017A Datasheet - Page 3

• Manufacturer Part Number: MC34017A
• Description: Telephone Tone Ringer Bipolar Linear/I2L
• Manufacturer: Freescale Semiconductor

Analog Integrated Circuit Device Data
Freescale Semiconductor
Table 1. 34017A Terminal Definitions
Terminal
Number
1, 8
2, 3
5
4
7
6
RO1, RO2
AC1, AC2
Terminal
Name
RS
RG
RC
RI
Terminal
Function
Formal
Name
Figure 3. 34017A Terminal Connections
TERMINAL CONNECTIONS
AC1
R01
R02
RI
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 supply terminal for the oscillator, frequency divider, and output buffer
circuits.
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).
1
1
2
3
4
8
7
6
5
AC2
RG
RC
RS
Definition
TERMINAL CONNECTIONS
34017A
3