U3750BM Datasheet, PDF (6/20 Pages) TEMIC Semiconductors – One Chip Telephone Circuit

U3750BM
TELEFUNKEN Semiconductors
Parameters
Available current
Reception
Receiving gain
G_R = V_R/V_L
AGC
Psophometric receiving
noise
Receiving distortion
Receiver output impedance
Receiver output offset
Sidestone (V_R/V_M)
Z line matching impedance
Ringer
Turn on voltage
Turn off voltage
Current consumption
without load
Output voltage swing
Output tone frequencies
Test Conditions / Pins
Close switch S4
I_L = 28 mA
I_L = 60 mA
figure 3
Pin 14
V_L = 0.3 V_RMS
I_L = 28 mA (G_R max)
I_L = 60 mA (G_R min)
I_L = 28 to 60 mA
figure 4
V_L = 0V, I_L = 28 mA
figure 4
Pin 29–30
I_L = 15 mA, V_R = 2.8 V_pp
I_L = 28 mA, V_R = 5.5 V_pp
I_L = 60 mA, V_R = 5.0 V_pp
figure 4
V_R = 50 mV_RMS,
I_L = 28 mA
figure 4
Pin 29–30
I_L = 28 mA
figure 4
Pin 29–30
I_L = 28 mA
figure 3
V_L = 0.3 V_RMS
I_L = 28 and 60 mA
figure 4
Measured at pin VIR
figure 5
figure 5
VIR = 18 V
Load = 10 kW
figure 5
Pin 38 grounded
Symbol
G_R
DG_R
V_ON
V_OFF
V_OUT
Min.
7.0
35
10
2.5
–6
45
–650
580
9.5
VIR–2
Pin 38 open
Sweep frequencies
Leakage current
Pin 39 grounded
Pin 39 open
VIR = 30 V
II_L at VI_L = 0 V
Pins 38 and 39
figure 5
Typ.
8
40
11
4
–7
65
36
660
16
10.5
1.2
1458
1166
547
438
4.0
9.1
Max. Unit
mA
12
5.5
dB
–8
–65 dBmp
3
3
%
3
85
W
+650
mV
40
dB
750
W
18.0
V
V
1.5
mA
Vp
Hz
Hz
5
mA
6 (20)
Rev. A1: 16.07.1996