AM7943-2PC AMD (ADVANCED MICRO DEVICES), AM7943-2PC Datasheet - Page 12

• Manufacturer Part Number: AM7943-2PC
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of AM7943-2PC

• Lead Free Status / RoHS Status: Supplier Unconfirmed

12
Thermal Management Equations (Normal Active and Tip Open states)
Thermal Management Equations (Polarity Reverse State)
Note: SLIC die temperature should not exceed 140
Z
Z
R
C
R
I
R
P
P
P
T
Theta JA
Theta JA
Theta JA
C
OHT
RTMG
SLIC
SLIC
T
RX
SLIC
DC1
DC
D
TMG
CAS
=
=
=
=
+
=
200 Z
375
-------- - C
=
=
=
=
=
I
R
---------- -
G
=
1.5 ms
T
500 V 0.66
------------------------------- -
R
Z
V
V
DC2
---------------------------- -
3.4 10
P
V
---------------------------- -
42L
DC1
L
,
--------------------------------------------------------------- -
SLIC
BAT
BAT
BAT
V
I
2WIN
BAT
LOOP
=
D
+
JA
JA
JA
1
-------------------------------------------------
Z
–
------------- -
I
R
=
T
LOOP
500
I
I
R
------------------------------- -
5
R
6 V
–
–
DC2
L
L
+
0.5 ms
---------------- -
JA
PDIP
CDIP
PLCC
DC1
DC1
6 V
–
–
2R
f
200 Z
R
c
R
200 Z
+
P
R
D
TMG
F
RTMG
+
L
T
–
R
Ambient
R
=
I
=
=
L
L
DC2
DC2
I
60 C watt
L
55 C watt
+
43 C watt
T
2
–
+
2R
R
R
0.12 W
L
L
F
Table 2. User-Programmable Components
I
L
2
2
+
0.12 W
Am7943 Data Sheet
o
F I N A L
C.
Z
are R
computing Z
stray capacitance between VTX and RSN must be taken into
account.
Z
is the desired receive gain.
R
R
current in the constant-current region.
R
the threshold current between on hook and off hook.
OHT loop current (constant-current region)
C
frequency.
R
dissipation within the SLIC in Normal Active and Tip Open states
only.
Power dissipated in the thermal management resistor, R
during Active and Tip Open states
Power dissipated in the SLIC while in Active and Tip Open states
Power dissipated in the SLIC while in the Polarity Reverse state
Total die temperature
Thermal impedance of the 22-pin plastic dip package
Thermal impedance of the 22-pin ceramic dip package
Thermal impedance of the 32-pin plastic leaded chip carrier
package
T
RX
TMG
DC1
DC1
D
CAS
is connected between the VTX and RSN pins. The fuse resistors
and C
is connected from V
, R
F
is the regulator filter capacitor and f
and R
is connected from TMG to V
and Z
DC2
D
form the network connected from RD to –5 V and I
, and C
DC2
T
2WIN
, the internal current amplifier pole and any external
are approximately equal. I
is the desired 2-wire AC input impedance. When
DC
form the network connected to the RDC pin.
RX
to RSN. Z
BAT
T
and is used to limit power
is defined above and G
c
is the desired filter cut-off
LOOP
is the desired loop
TMG
,
T
42L
is