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| U3761MB-T Datasheet, PDF (20/27 Pages) ATMEL Corporation – Universal Telephone IC - All Functions Integrated | |||
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Absolute Maximum Ratings
Stresses beyond those listed under âAbsolute Maximum Ratingsâ may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Parameters
Symbol
Value
Unit
Line current
IL
140
mA
DC line voltage
VL
14
V
DC voltage at pins 1 to 11 and 33 to 44
VDC
5.5
V
Junction temperature
Tj
125
°C
Ambient temperature
Tamb
-25 to +75
°C
Storage temperature
Tstg
-55 to +150
°C
Total power dissipation, Tamb = 60°C, SSO44
Ptot
0.9
W
Junction ambient, SSO44
RthJA
70
K/W
Note: ESD withstand voltage 1 kV according to ESD standard S5.1 (HBM)
Electrical Characteristics: Speech Circuit
Reference point pin GND, f = 1000 Hz, 0 dBm = 775 mVrms, RDC = 39 W/1 W, Tamb = 25°C, unless otherwise specified, refer
to "Basic Test Circuit". CLIM = GND
Parameters
Test Conditions
Symbol
Min.
Typ.
Max.
Unit
Line voltage
Transmit and Sidetone
IL = 8 mA
IL = 20 mA
IL = 73 mA
IL = 100 mA
1.4
V
VL
3.6
3.85
4.1
V
5.9
6.55
7.2
V
6.9
8.2
V
Input resistance
Gain
Gain change with current
Gain deviation
Line-loss compensation
Distortion at line VL = 0.775 Vrms
Maximum output voltage
at line d £ 5%
Attack time transmit anticlipping
Noise at line weighted
psophometrically
Ri
IL = 20 mA, S5 = open
IL = 20 to 60 mA, RAGC = infinite
Tamb = -10 to +60°C, IL = 20 mA
RAGC = 12 kW, IL = 73 mA
IL = 20 mA, S5 = open
IL = 20 mA, Vmic = 10 mV,
CLIM = 2.2 µF, S1 = open
CLIM = 2.2 µF
IL > 20 mA, GS = 48 dB
Ri
Gs
DGS
DGS
DGs
dt
VLmax
tatt
no
45
80
120
kW
46.8
47.8
48.8
dB
-0.5
0.5
dB
-0.5
0.5
dB
-7
-6
-4.8
dB
2
%
1.2
dBm
3.5
ms
-72
dBmp
Sidetone reduction
DTMF Amplifier
IL ³ 20 mA
GSTA
10
15
20
dB
Volume range d < 5%
DTMF output level low frequency
group
Pre-emphasis between high- and
low-level frequency group
Total harmonic distortion relative to
sum level of low and high frequency
group signal
Single tone, IL ³ 20 mA
IL = 20 mA, S5 = closed
Tamb = -5°C to +60°C
PPRE = PHLG - PLLG, S5 = closed,
Tamb = -5°C to +60°C
IL ³ 20 mA, measured at pin MFO
VL
VL
PPRE
THD
1.3
dBm
-7.6
-4.6
dBm
1.9
2.5
3.1
dB
-33
-25
dBr
20 U3761MB-T
4744AâCORDâ09/03
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