LE57D122BTC Zarlink, LE57D122BTC Datasheet - Page 21

• 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

APPLICATION CIRCUIT PARTS LIST (POTS WITH METERING)
The following list defines the parts and part values required to meet target specification limits for channel i of the line card (i = 1,2).
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
R
R
R
R
R
C
C
R
Protector
C
C
C
D
R
C
C
C
C
C
R
R
R
R
R
R
R
R
C
C
C
C
C
C
U1
RTH1
SR1
SR2
RTH2
R1
TH
RT1
FA1
S1
BAT
VCC
VBH
TMG1
M1
T1
X1
P1
DET1
M1
TA1
RX1
P1
X1
REF
D
HP1
AD1
HP1
VTX1
VRX1
DC1
CAS
In case of single, one for each channel. In case of dual, one for one Le5712 Dual SLIC.
Consult protector vendor for recommended value. One for one protector device.
A Schottky diode with a voltage drop of 0.4V is desirable if Tip to battery fault is concerned.
Value was chosen to use resistor with 5% tolerance and 1 W rating. See "Thermal Management for the Le5711 and Le5712 Dual SLIC Device" for further details.
Sets a gain of about 5.5 dB into a load of 200
Sets the current limit at 33 mA.
Sets an off-hook detection threshold of 11 mA.
RHP will enhance dial pulse crosstalk performance. RHP being 15 k will make G24 from being 1/3 to 1/3.0841. RHB should be present in WinSLAC™
simulations.
, C
, C
, C
, C
, R
, R
, R
, C
, R
, R
, R
, C
, R
, R
, R
, R
, C
, C
, C
, C
, C
, C
S2
, R
T2
X2
P2
P2
X2
R2
M2
M2
FB1,
TA2
RT2
SR3
SR4
RX2
HP2
BD1
HP2
DC2
DET2
,
VTX2
VRX2
TMG2
Item
, R
, C
R
FA2A
TB1
AD2
, R
, C
R
TB2
FB2
BD2
Quantity
1 or 2
1 or 2
1
2
2
1
2
1
2
4
1
1
1
2
2
2
2
2
2
2
4
2
2
2
1
1
2
4
2
2
2
2
1
1
Components specific to Metering application circuit
SMT
SMT
SMT
SMT
Resistor Hybrid
Capacitor (X7R)
Capacitor (X7R)
Resistor Hybrid or PTC
Battery referenced thyristor
Capacitor (X7R)
Capacitor (X7R)
Capacitor (X7R)
MURS 120 (D0-41) DIODE
SMT
Capacitor (X7R)
Capacitor (X7R)
Capacitor (X7R)
Capacitor (X7R)
Capacitor (X7R)
SMT
SMT
SMT
SMT
SMT
SMT
SMT
SMT
Capacitor (X7R)
Capacitor (X7R)
Capacitor (X7R)
Capacitor (X7R)
Capacitor (X7R)
Capacitor (X7R)
Le5712x
Ω
at tip-ring (20LOG(200/16.5/1000*500/(1+500/3.0841*(200+100)/22.1/1000)).
Fault Protection and Power Supplies
Ringing and Ring Trip Sensing
Type
Zarlink Semiconductor Inc.
Other Components
21
0.047 µF
0.022 µF
0.022 µF
1.82 MΩ
1000 pF
1500 pF
16.5 kΩ
49.9 kΩ
71.5 kΩ
22.1 kΩ
4.99 kΩ
14.3 kΩ
82.5 kΩ
15.0 kΩ
0.01 µF
0.33 µF
0.33 µF
909 kΩ
390 pF
1.8 kΩ
0.1 µF
0.1 µF
0.1 µF
0.1 µF
0.1 µF
0.1 µF
0.1 µF
Value
400 Ω
1 MΩ
2 MΩ
50 Ω
20%
20%
20%
20%
20%
20%
10%
10%
10%
20%
20%
20%
20%
20%
20%
20%
Tol.
1%
1%
1%
1%
5%
1%
5%
1%
1%
1%
1%
1%
1%
1%
1%
1/16 W
1/16 W
1/16 W
1/16 W
1/16 W
1/16 W
1/16 W
1/16 W
1/16 W
1/16 W
1/16 W
1/16 W
Rating
100 V
100 V
100 V
100 V
100 V
50 V
50 V
10 V
10 V
10 V
10 V
10 V
10 V
10 V
2 W
1 W
10V
5 V
Note
1
2
3
4
5
6
7
8