CPC5604A Clare, CPC5604A Datasheet - Page 19

• Manufacturer Part Number: CPC5604A
• Description: IC DAA OPT SGL 56K PCMCIA 32-SOP
• Manufacturer: Clare
• Series: LITELINK®r

Specifications of CPC5604A

• Function: Data Access Arrangement (DAA)
• Number Of Circuits: 1
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 15mA
• Power (watts): 1W
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-SOIC (7.5mm Width)
• Includes: Caller ID Signal Detector, Ring Detector
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.25V
• Operating Temp Range: -20C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Interface: -
• Lead Free Status / Rohs Status: Compliant

Figure 4 On-Hook DC Resistance Tip/Ring Setup
On-Hook Resistance
Figure 4 shows the test setup for on-hook DC resist-
ance. The battery is set to 100VDC and an ammeter is
placed in series with the battery connection. When the
DAA is in the on-hook state, the leakage current is
obtained and then the battery voltage is divided by this
current yielding the on-hook resistance. The LiteLink
is guaranteed to have a leakage current < 10uA at 100V
which is equivalent to an on-hook resistance > 10MΩ
thus meeting regulatory approvals.
Current Limiting
The LiteLink
selectable via resistor R
value is set by the equation:
10
For US/Canada/Japan the recommended value for
R
133mA. The current limiting feature is especially useful
in the case where the host system is inadvertently con-
nected to a digital PBX telephone port which usually has
a very high current limit value. The current limiting capa-
bility will prevent damage to the LiteLink
nario.
XXX
ZDC
RZDC
(R16) is 8Ω which yields a current limit value of
1V
12
TM
includes a current limiting feature that is
LITELINK
ZDC
(R16). The current limit
TM
DAA Circuit
TM
in this sce-
www.clare.com
TIP
RING
TM
CTR-21 Compliance
CTR-21 is the standard for connection of data commu-
nications equipment to the European telephone net-
work. The maximum current limit requirement in
CTR-21 (Section 4.7.1) is 60mA and can be selected by
the following equation:
ILM =
Clare recommends current limit be set to 53mA using an
R
excess power is dissipated in the external MOSFET
package. Since the maximum off-hook line voltage and
current in CTR-21 is 40V and 53mA respectively, the
maximum power dissipated by the MOSFET is approxi-
mately 2.1W.
AC Characteristics
In a similar manner to the DC characteristics, AC termi-
nation impedance is set via R
tions, a 604W resistor for R
reflect 600W to the CO.
ZDC
value of 22Ω. Since V
RZDC
1V
+ 8mA
A
DD
ZNT
ZNT
is regulated to +3.5V,
(R18). For all applica-
(R18) is required to
+
-
100VDC
CPC5604
19