L3234 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
L3234 Datasheet PDF : 26 Pages
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L3234 - L3235
ELECTRICAL CHARACTERISTICS (Test condition: refer to the test circuit of the fig. 17; VCC = 5V,
VSS = -5V, Vbat = -48V, Tamb = 25°C, unless otherwise specified)
Note: Testing of all parameters is performed at 25°C. Characterization, as well as the design rules used
allow correlation of tested performance with actual performance at other temperatures. All pa-
rameters listed here are met in the range 0°C to +70°C. For applications requiring operations in
the standard temperature range (0°C to 70°C) use L3234. If operations are required in the ex-
tended temperature range (-40°C to 85°C), use the L3234T.
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit Fig.
STAND-BY
Vls
Output Voltage at TIP/RING
pins
ILCC
Short Circuit Current
DC OPERATION
ILINE = 0
Stand-by, SBY = 1
35.7
2
3
39
V
4
mA
VlP
Output Voltage at TIP/RING
pins
Ilim
Current Progr.
Ilim
Current Progr.
IO
On-hook Threshold
If
Off-hook Threshold
Ilgk
GK Detector Threshold
Gklim
Ground Key Current
Limitation
Gkov
Ground Key Threshold
Overloap
Imax
Max. Output Current at
TIP/RING
IVCC
Supply Current from VCC
IVSS
Supply Current from VSS
IVbat
Supply Current from Vbat
AC OPERATION
ILINE = 0
ILINE = 50mA
Ilim Prog. = 70mA
8.4KΩ < RLIM < 33KΩ
RING to BGND
Gklim-Ilgk
Ilim = 70mA
Iline = 0
Iline = 0
Iline = 0
35.7
35.2
63
70
20
10
10
13
39
V
39
V
77
mA
70
mA
5
17
22
mA
1
mA
90
140 mA
6.2
8
mA
1.6
2.1
mA
2.8
3.6
mA
Ztx
Zrx
Rl
Thl
Gs
Gsf
Gsl
Gr
Grf
Grl
Np4W
Np2W
Svrr
Svrr
Ltc
Tlc
Sending Output Impedance
Receiving Input Impedance
2W Return Loss
Trans Hybrid Loos
Sending Gain
Flatness
Linearity
Receiving Gain
Flatness
Linearity
Psoph. Noise at Tx
Psoph. Noise at Line
Relative to Vbat versus Line
Terminal versus Tx Terminal
Relative to Vcc and Vss
versus Line Terminal versus
Tx Terminal
L/T Conversion measured at
line Terminals
T/L Conversion Measured at
Line Terminals
(*) Selected parts L3235C
pin 9 (Tx)
pin 12 (Rx)
f = 300 to 3400Hz
f = 300 to 3400Hz
f = 1020Hz Il = 20mA
f = 300 to 3400Hz
-20dB to 10dBm
f = 1020Hz Il = 20mA
f = 300 to 3400Hz
-20dBm to +4dBm
f = 1020Hz
VS = 100mVpp
f = 1020Hz
VS = 100mVpp
f = 300 to 3400
Iline = 20mA
f = 300 to 3400
Iline = 20mA
10
Ω
1
MΩ
20
36
dB
A1
20
36
dB
A2
5.82 6.02 6.22 dB
A3
-0.2
0.2
dB
-0.2
0.2
dB
0.2
0
0.2
dB
A4
-0.2
0.2
dB
-0.2
0.2
dB
-69
-62 dBmp
-75
-68 dBmp
-30
dB
A5
-24
dB
-20
dB
-14
dB
49
53(*)
46(*)
dB
A6
dB
dB
A7
19/26
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