LE57D122BTC Zarlink, LE57D122BTC Datasheet - Page 13

• Manufacturer Part Number: LE57D122BTC
• Description: SLIC 2-CH 67dB 120mA 5V 44-Pin LQFP EP Tray
• Manufacturer: Zarlink

Specifications of LE57D122BTC

• Package: 44LQFP EP
• Number Of Channels Per Chip: 2
• Polarity Reversal: Yes
• Longitudinal Balanced: 67 dB
• Loop Current: 120 mA
• Minimum Operating Supply Voltage: 4.75 V
• Typical Operating Supply Voltage: 5 V
• Typical Supply Current: 9.3 mA

User-Programmable Components Summary
* “i” denotes channel number
Thermal Management Equations (All Active states for one channel) (Please refer to the
SLIC Devices
P
R
C
I
SLICmaxi
REF
OHD
I
CAS
STANDBY
Z
=
Z
RXi
=
Ti
=
470 V
------------------
I
-----------------------------------
RI
LIMIT
I
Application Note for details about dual battery operation.)
=
=
P
GSD
=
AS
R
RTMGmax
------------ -
G
⋅
500
-------- - Z
=
TMG
0.003 BAT
3
Z
42L
•
L
1
------------------------------- -
=
600 Ω
(
V
2π f
BAT
•
935 V
-----------------
≥
2WIN
•
-------------------------------------------------------
Z
R
--------------------------------------------------------------------------------------------------------------------------------- -
BAT
T
D
=
c
⋅
–
+
+
–
4 V
(
---------------------------------------------------------------------------------------------------------------------------
R
max
500
-------- -
MAX
2R
BAT
3
500 Z
L
+
F
⋅
)
(
•
6 – I


Z
max
1
L
–
T
+
+
–
I
------------------------ - R
LIMITMIN
2R
LIMITmax
Equation
I
LIMITMIN
5
–
F
2
)
I
LIMITmin
R
⋅
TMGmin
(
–
TMGmax
2 R
3 mA
•
Zarlink Semiconductor Inc.
(
R
F
Lmin
+
 I

R


LMIN
------------------------ -
+
LIMITmax
2R
13
2
F
+
+
40Ω
40
+
)
)
)
----------------------- -
R
2
TMGmax
1


Thermal Management for the Le5711 and Le7512 Dual
Z
RSN pins. The fuse resistors are R
Z
impedance. When computing Z
internal current amplifier pole and any
external stray capacitance between VTX
and RSN must be taken into account.
Z
defined above, and G
receive gain.
I
constant-current region.
C
the desired filter cut-off frequency.
Off Hook Detect (I
Detect (I
10 to 12 mA.
Standby loop current (resistive region).
R
limits power within the SLIC device in Active,
Off-Hook states.
Maximum power dissipated in the TMG
resistor, R
states.
Maximum power dissipated per channel in
the SLIC device while in Active, Off-Hook
states.
LIMIT
Ti
2WIN
RXi
CAS
TMG
* is connected between the VTX and
* is connected from VRX to RSN. Z
is the regulator filter capacitor and f
is the desired loop current limit in the
is connected from TMG to VBAT and
is the desired 2-wire AC input
GSD
TMG
) thresholds are typically set at
, during Active, Off-Hook
Description
OHD
42L
) and Ground Start
is the desired
Ti
, the
F
, and
Ti
c
is
is