U4037B Datasheet, PDF (4/6 Pages) TEMIC Semiconductors – LOW VOLTAGE SPEECH CIRCUIT WITH TONE RINGER INTERFACE

U4037B
Electrical Characteristics speech circuit
Reference point Pin GND, f = 1000 Hz, 0 dBm = 775 mV_rms, R_DC = 60 kΩ, T_amb = 25°C, unless otherwise specified
Parameters
Line voltage
Transmit and sidetone
Input resistance
Gain
Line loss compensation
Distortion at line
Maximum output voltage
Anti-clipping attack time
Release time
Noise at line weighted
psophometrically
Sidetone reduction
DTMF-amplifier
y Volume range d 5%
Receiving amplifier
Gain
Amplification of DTMF signal
from DTMF IN to RECO1/2
Frequency response
Gain change with current
Gain deviation
Ear protection differential
Line loss compensation
Receiving noise at earphone
psophometrially weighted
Gain change when muted
Output voltage push pull
Supply voltage
Output voltage
Mute suppression
Test Conditions / Pin
I_L = 8 mA
I_L = 20 mA
I_L = 30 mA
I_L = 73 mA
Symbol Min
V_L
1.8
3.0
3.6
7.7
R_i
R_i
30
W ^{IL = 30 mA}
R_AGC = 0 , I_L = 73 mA
G_s
47
DG_s
–5
I_L > 15 mA, V_L = 775 mVrms d_s
I_L > 19
V_mic =
mA, d < 5 %,
10 mV, RDC =
100
kW
V_1max
1.8
V_mic = 20 mV, C = 470 nF
Each 3 dB overdrive
I_L > 30 mA, G_S = 48 dB
n_o
yI_L 20 mA
G_STA
10
V₀
1
w IL 20 mA
w I_F 15 mA, mute active
G_R
G_RM –15
I_L> 15 mA, C_L = 4.7 nF,
DG_RF
f =300 to 3400 Hz
I_L = 15 to 100 mA
D_GR
T_amb = –10 to +60°C,
D_GR
w ^{IL = 15 mA}
I_L 15 mA, V_gen = 11 V_rms
I_L = 73 mA
DG_R –5
I_L = 73 mA
n_i
y I_L 20 mA
y I_L 20 mA
G_RM
V₀
0.8
y IL 20 mA
speech mode
w I_L 20 mA
V_DDS
G_SM
60
Typ Max Unit
2.1
2.6
V
3.3
3.6
V
4.5
V
9.7
V
50
75
kΩ
48
49
dB
–6
–7
dB
2
%
3
4.2 dBm
0.5
ms
9
ms
– 72 dBmp
15
20
dB
V_RMS
4
dB
–12 –9
dB
"0.5 ^dB
"0.5
"0.5
dB
dB
2.2
V_rms
–6
–7
dB
– 80 – 71 dBm
40
dB
0.9
1
V_rms
3
V
V
dB
4 (6)
TELEFUNKEN Semiconductors
Preliminary Information
Rev. A1, 08-Oct-96