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Электронный компонент: UBA1702A/C1

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DATA SHEET
Product specification
Supersedes data of 1996 Jan 09
File under Integrated Circuits, IC03
1997 Sep 29
INTEGRATED CIRCUITS
UBA1702; UBA1702A
Line interrupter driver and ringer
1997 Sep 29
2
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
FEATURES
Speech part
Driver for the line interrupter that can be either a PMOST
when UBA1702 is used or a PNP when UBA1702A is
used
Adjustable over-current protection
Adjustable over-voltage protection for transmission
circuit
Adjustable mute (dialling mode voltage; DMO or NSA)
Adjustable current loop detection (hook switch status)
Microcontroller supply
Provision for electronic hook switch.
Ringer part
Over-voltage protection
Ringer frequency output for frequency discrimination
Adjustable ringer threshold for piezo-driver enable
Three bits ringer volume control
Bridge-tied-load (BTL) output stage for piezo transducer
Fast start-up microcontroller supply.
Miscellaneous
Separated ground pins for transmission circuit interface
and control signals (e.g. for TEA1064A)
Possibility to supply the microcontroller with an external
voltage source.
APPLICATIONS
Telephone sets with software controlled ringer function
Telephone sets with electronic hook switch.
GENERAL DESCRIPTION
The UBA1702; UBA1702A performs the high voltage
interface and ringer functions of the corded analog
telephone set in close cooperation with a microcontroller
and transmission circuit.
The UBA1702; UBA1702A incorporates several
protections, a driver for the line interrupter and a ringer.
Because of the practical division of functions between the
microcontroller, the transmission circuit and the UBA1702;
UBA1702A, it is possible to have a higher integration level
thereby reducing significantly the number of discrete
components in a telephone set.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
UBA1702
DIP28
plastic dual in-line package; 28 leads (600 mil)
SOT117-1
UBA1702A
DIP28
plastic dual in-line package; 28 leads (600 mil)
SOT117-1
UBA1702T
SO28
plastic small outline package; 28 leads; body width 7.5 mm
SOT136-1
UBA1702AT
SO28
plastic small outline package; 28 leads; body width 7.5 mm
SOT136-1
1997 Sep 29
3
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
QUICK REFERENCE DATA
Speech part: l
line
= 20 mA; DPI = LOW; T
amb
= 25
C; V
EE
= 0 V; unless otherwise specified.
Ringer part: V
line(rms)
= 45 V; f = 25 Hz; using an RC combination of 2.2 k
and 820 nF and a diode bridge between the
line and the RPI input.
Notes
1. Independent of V
RR
if greater than 10 V.
2. Without piezo transducer, dependent on V
RR
.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Speech part
S
WITCH DRIVER AND REFERENCES
(
PINS
SDI, SDO, EHI
AND
DPI); UBA1702A
ONLY
R
SDO
resistance between pins SDO and V
EE
-
2.2
-
k
S
WITCH DRIVER AND REFERENCES
(
PINS
SDI, SDO, EHI
AND
DPI); UBA1702
AND
UBA1702A
R
SDI-SDO
resistance between pins SDI and SDO V
SDI
-
V
SDO
< 12 V
-
1.1
-
M
R
SDI
resistance between pins SDI and V
EE
V
SDI
= 240 V; DPI = HIGH
5
-
-
M
M
UTE SWITCH AND ADJUSTABLE PROTECTION ZENER VOLTAGE
(
PINS
MSI, MSA
AND
ZPA)
V
SPO(M)
adjustable mute voltage referenced to
V
EE
MSI = HIGH;
MSA open-circuit
-
2.7
3
V
V
SPO(Z)
adjustable zener voltage referenced to
V
EE
MSI = LOW;
ZPA open-circuit
11
12
13
V
C
URRENT MANAGEMENT
(
PINS
SPI, SPO, CDA, CLA
AND
CDO)
l
SPI(lim)
current limitation (pin SPI)
CLA shorted to V
EE
-
120
-
mA
I
SPI(det)
current detection (pin SPI)
CDA open-circuit
2
3
4
mA
M
ICROCONTROLLER SUPPLY
(V
DD
AND
V
BB
)
V
DD
supply output voltage referenced to
V
SS
V
BB
> 3.7 V; I
DD
=
-
1 mA
3.0
3.3
3.6
V
Ringer part
P
ROTECTION
(
PIN
RPI)
I
RPI(max)
maximum input current
70
-
-
mA
R
INGER THRESHOLD AND FREQUENCY DETECTION
(
PINS
V
RR
, RTA
AND
RFO)
V
RR(th)
ringer supply threshold voltage
referenced to V
SS
RTA open-circuit
-
11
-
V
V
OLUME CONTROL
(
PINS
RV0, RV1
AND
RV2)
G
s
step resolution
(RV2, RV1, RV0) from
(0, 0, 0) to (1, 1, 0); note 1
-
6
-
dB
G
ls
last step resolution
(RV2, RV1, RV0) from
(1, 1, 0) to (1, 1, 1); note 2
-
9.5
12
dB
R
INGER MELODY INPUT AND PIEZO DRIVER
(
PINS
RMI, ROA
AND
ROB)
V
o(max p
-
p)
maximum output voltage between pins
ROA and ROB (peak-to-peak value)
RV2 = 1; RV1 = 1; RV0 = 1
-
28.7
32
V
1997 Sep 29
4
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
BLOCK DIAGRAM
Fig.1 Block diagram.
handbook, full pagewidth
MBE184
VDD
VSS
DIGITAL
-TO-
ANALOG
CONVERTER
VDD
VSS
VDD
VSS
VDD
VOLUME
CONTROL
15
14
13
RV0
RV1
RV2
16
RINGER
THRESHOLD
11
R ref
VSS
RINGER MELODY INPUT AND PIEZO DRIVER
1/2 VDD
VDD
VDD
VRR
VSS
VRR
VSS
22
ROA
ROB
20
R ref
RINGER
PROTECTION
RPI
23
VDD
VSS
12
RINGER FREQUENCY
DETECTION
VSS
SUPPLY
RINGER
VDD
REFERENCES
Vref
18
19
VDD
VBB
Sref
Rref
SPO
VSS
UBA1702; UBA1702A
UBA1702T; UBA1702AT
7
17
VEE
VSS
VDD
VSS
8
MSI
R ref
MSA
S ref
ZPA
MUTE SWITCH
ZENER PROTECTION
SPEECH
10
9
Sref
SENSE
Sref
VDD
VSS
LINE CURRENT MANAGEMENT
6
5
26
24
25
CLA
CDO
CDA
SPI
SPO
VRR
RTA
21
RMI
SWITCH
DRIVER
VSS
14 V
2
1
SDI
SDO
DPI
EHI
4
28
RFO
VRR
1997 Sep 29
5
Philips Semiconductors
Product specification
Line interrupter driver and ringer
UBA1702; UBA1702A
PINNING
SYMBOL
PIN
DESCRIPTION
SDI
1
switch driver input
SDO
2
switch driver output
n.c.
3
not connected
DPI
4
dialling pulse input
SPI
5
speech part input
SPO
6
speech part output
V
EE
7
ground for transmission circuit
MSI
8
mute switch input
ZPA
9
Zener protection adjustment input
MSA
10
mute switch adjustment input
RTA
11
ringer threshold adjustment input
RFO
12
ringer frequency output
RV0
13
ringer volume input; bit 0
RV1
14
ringer volume input; bit 1
RV2
15
ringer volume input; bit 2
RMI
16
ringer melody input
V
SS
17
ground for microcontroller and
ringer
V
DD
18
microcontroller supply voltage
V
BB
19
supply voltage from transmission
circuit
ROB
20
ringer output B
V
RR
21
ringer supply voltage
ROA
22
ringer output A
RPI
23
ringer part input
CDO
24
current detection output
CLA
25
current limitation adjustment input
CDA
26
current detection adjustment input
n.c.
27
not connected
EHI
28
electronic hook switch input
Fig.2 Pin configuration.
handbook, halfpage
1
2
3
4
5
6
7
8
9
10
11
12
13
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
SDI
RV1
RV0
RFO
RTA
MSA
ZPA
V
SPO
DPI
n.c.
SDO
SPI
MSI
EE
RV2
RMI
ROB
V
ROA
RPI
CDO
CLA
CDA
n.c.
EHI
RR
VBB
VDD
VSS
UBA1702
UBA1702T
UBA1702A
UBA1702AT
MBE183