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PDF UPC7073GT Data sheet ( Hoja de datos )
| Número de pieza | UPC7073GT | |
| Descripción | UPC7073 ANALOG SUBSCRIBER LINE LSI BS-SLIC | |
| Fabricantes | NEC | |
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DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µPC7073
µPC7073 ANALOG SUBSCRIBER LINE LSI (BS-SLIC)
The µPC7073 is a BS-SLIC that can be used in analog subscriber circuits such as private branch exchangers
(PBXs) and switching equipment for central offices. It features two of the functions required for analog subscriber
circuits: subscriber line feed control and subscriber line supervision.
Use of the µPC7073 in combination with a digital CODEC (µPD9903) can reduce the number of components
required in analog subscriber circuits.
FEATURES
• Single-chip, monolithic LSI (bipolar)
• Constant-resistance feed or semi constant-current feed Note
• 200-Ω feed, 400-Ω feed, or Tip-to-Ring pin feedout status (HIGH and WET)
• On-chip metering signal superposing circuit
• On-hook sending and receiving
• Loop detection Note
• Ground detection and ground-fault/power contact protection Note
• Three on-chip relay drivers (flyback prevention diode must be externally provided)
• Two power supply voltages (–48 V and +5 V)
• Low power consumption: 110 mW (TYP., when on hook)
Note Requires µPD9903.
ORDERING INFORMATION
Part Number
µPC7073GT
Package
48-pin plastic shrink SOP (375 mil)
The information in this document is subject to change without notice.
Document No. S10896EJ2V0DS00 (2nd edition)
(Previous No. ID-3576)
Date Published June 1996 P
Printed in Japan
©
1996
1 page  
µPC7073
1. PIN FUNCTIONS
Number
Pin Name
I/O
Function
1-3 DCOUT1-DCOUT3 O DC feedback control output
[to the µPD9903’s pin 48-46]
4, 5
DCIN1, DCIN2
I DC feedback control input
[to the µPD9903’s pin 45, 44]
6 BBOUT
O VBB voltage information output
[to the µPD9903’s pin 43]
7 ASCN
O Tip-Ring difference current detection signal output [to the µPD9903’s pin 42]
8 AGDT
9 BIAS
O Tip-Ring sum current detection signal output
[to the µPD9903’s pin 41]
I
Bias level input. Connect to µPD9903’s AIN pin
[to the µPD9903’s pin 40]
10 RX
I Receiving input for 4W side
[to the µPD9903’s pin 39]
11 ACOM
I Signal reference voltage (2.4 V TYP) input for 4W side [to the µPD9903’s pin 37, 38]
12-14, 16,
26, 28, 30,
39, 41, 43
NC
– No-connection pins. Leave these pins unconnected.
15 GND1
– Ground pin 1, for circuit grounding
17 PD
I Power-down control
H: Power-up
TTL level
L: Power-down
[to the µPD9903’s pin 32]
18 ALM
I Ground-fault/power line contact protection mode select input
H: Protect mode
L: Normal feed
TTL level
[to the µPD9903’s pin 31]
19 BCUT
I Feed-out select input
H: Feed-out
L: Normal feed
TTL level
[to the µPD9903’s pin 30]
20 RC1
I Relay control for ringer transmission, high active [to the µPD9903’s pin 29]
21 RC2
I Relay control for line test, high active
[to the µPD9903’s pin 28]
22 RC3
I Relay control for network test, high active
[to the µPD9903’s pin 27]
23 VBB
– Negative power supply (–48 V)
24 TEF
O Feed resistor pin connection for Tip side during ground-fault/power line contact
detection
25 RY1
O Relay control for ringer transmission, open collector
27 RY2
O Relay control for line testing, open collector
29 RY3
O Relay control for network testing, open collector
31 GND2
– Ground pin 2, relay driver
32 REF
O Ring feed resistor pin connection for ground-fault/power line contact detection
33 OPIN+
I TTX (Teletax) signal cancel circuit input pin (+)
34 OPIN–
I TTX signal cancel circuit input pin (–)
35 TX
O Transmission output for 4W side. Connect with BIAS pin via CAC capacitor.
36 CDC
– Connect to DC feedback capacitor
Connect CDC capacitor to this pin
37 TB
O Tip-side auxiliary power transistor base connection pin
38 TE
O Tip-side feed amplifier output pin. Connect with TS pin via RFT resistor.
40 TS
I/O Tip pin for 2W side
42 RS
I/O Ring pin for 2W side
5
5 Page 
µPC7073
Parameter
Loop detection operating
resistance (during normal
transmission)
Loop detection non-operating
resistance (during normal
transmission)
Loop detection operating
resistance (during on-hook
transmission)
Loop detection non-operating
resistance (during on-hook
transmission)
Loop release non-operating
resistance
Loop release operating
resistance
Ground detection 1 (C/O)
operating resistance
Ground detection 1 (C/O)
non-operating resistance
Ground-fault/power line
contact detection
operating resistance
Ground-fault/power line
contact detection non-
operating resistance
Ground-fault/power line
contact release non-
operating resistance
Ground-fault/power line
contact release operating
resistance
Symbol
RON1
Conditions
Includes termination
resistance
200 Ω feed
400 Ω feed
MIN.
200 Ω feed
400 Ω feed
3900
3500
RON2
Includes termination
resistance
200 Ω feed
400 Ω feed
200 Ω feed
400 Ω feed
2840
2440
RON3
RON4
Includes termination
resistance
200 Ω feed
400 Ω feed
200 Ω feed
400 Ω feed
Includes termination resistance
4540
4140
20
RON6
RON7
Includes termination
resistance
Off-hook stage
Includes termination
resistance
ILMAX = 45/76 mA
ILMAX = 35 mA
ILMAX = 45/76 mA
ILMAX = 35 mA
Includes termination resistance
870
1130
10
Note The above values are resistance-converted values.
TYP.
MAX.
2500
2100
1900
1500
2960
2560
5.2
340
480
1.4
Units
Ω
Ω
Ω
kΩ
Ω
Ω
kΩ
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet UPC7073GT.PDF ] | |
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