MT91600AN1 데이터 시트보기 (PDF) - Zarlink Semiconductor Inc
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MT91600AN1 Datasheet PDF : 18 Pages
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Change Summary
Page
10
MT91600
Item
Figure 5
Change
Updated Application Diagram
Data Sheet
VDD 1
TD 2
TF 3
TIP 4
RING 5
VREF 6
IC 7
RF 8
RV 9
RD 10
C3A 11
C3B 12
C2B 13
C2A 14
28 VEE
27 GND
26 RLYD
25 RLYC
24 SHK
23 C1
22 X2
21 VR
20 X3
19 VX
18 X1
17 Z3
16 Z2
15 Z1
Figure 2 - Pin Connections
Pin Description
Pin #
Name
1
VDD
2
TD
3
TF
4
TIP
5
RING
6
VREF
7
IC
8
RF
9
RV
10
RD
11
C3A
12
C3B
13
C2B
14
C2A
15
Z1
Description
Positive supply rail, +5 V.
Tip Drive (Output). Controls the Tip transistor.
Tip Feed. Connects to the Tip transistor and to the TIP lead via the Tip feed resistor.
Tip. Connects to the TIP lead of the telephone line.
Ring. Connects to the RING lead of the telephone line.
Reference Voltage (Input). This pin is used to set the subscribers loop constant
current. Changing the input voltage sets the current to any desired value within the
working limits. VREF is related to VLC.
Internal Connection (Input). This pin must be connected to GND for normal operation.
Ring Feed. Connects to the RING lead via the Ring feed resistor.
Ring Voltage and Audio Feed. Connects directly to the Ring drive transistor and also to
Ring Feed via a relay.
Ring Drive (Output). Controls the Ring transistor.
A filter capacitor for over-current protection is connected between this pin and GND.
A filter capacitor for over-current protection is connected between this pin and GND.
A capacitor for loop current stability is connected between this pin and C2A.
A capacitor for loop current stability is connected between this pin and C2B.
Line Impedance Node 1. A resistor of scaled value "k" is connected between Z1 and
Z2. This connection can not be left open circuit.
2
Zarlink Semiconductor Inc.
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