U4090B Datasheet, PDF (17/34 Pages) TEMIC Semiconductors – Monolithic Integrated Feature Phone Circuit

U4090B
Parameters
Test Conditions / Pin Symbol Min Typ Max
AC impedance
V_IMPSEL = GND
V_IMPSEL = V_MP
Z_imp
570 600 640
Z_imp
840 900 960
I_L = 10 mA
Distortion at low operating IMP = 1 mA
current
RVD^GEC^N==6586k0W^mV
dR
5
Speaker Amplifier
Minimum line current for
operation
No ac signal
I_Lmin
15
Input resistance
Pin 24
14
22
Gain from SAI to SAO
V_SAI = 3 mV,
I_L = 15 mA,
RGSA = 560
kW
RGSA = 20 kW
G_SA
35.5
36.5
–3
37.5
Output power
Load resistance
R_L = 50 W, d < 5%
V_SAI = 20 mV
I_L = 15 mA
I_L = 20 mA
P_SA
P_SA
3
Output noise (Input SAI
open)
I_L > 15 mA
n_SA
psophometrically weighted
Gain deviation
I_L = 15 mA
T_amb = – 10 to + 60°C
DG_SA
Mute suppression
I_L = 15 mA,
V_L = 0 dBm,
V_SAI = 4 mV
Pin 23 open
VSAO
Gain change with current I_L = 15 to 100 mA
DG_SA
Resistor for turning off
speaker amplifier
I_L = 15 to 100 mA
RG_SA
0.8
Gain change with frequency
I_L = 15 mA
f = 300 to 3400 Hz
DG_SA
Attack time of anti-clipping 20 dB over drive
tr
7
20
200
"1
– 60
"1
1.3
2
" 0.5
5
Release time of anti-clip-
ping
tf
80
DTMF-Amplifier
Test conditions: IMP = 2 mA, IM = 0.3 mA, V_MUTX = VMP
Adjustment range of DTMF I_L = 15 mA
gain
Mute active
G_D
40
50
DTMF amplification
I_L = 15 mA,
VDTMF = 8 mV
Mute active:
MUTX = VMP
G_D
40.7 41.7 42.7
Gain deviaton
I_L = 15 mA
T_amb = – 10 to + 60
G_D
°C
" 0.5
Unit
W
W
%
mA
kW
dB
mW
mV_psoph
dB
dBm
dB
MW
dB
ms
ms
dB
dB
dB
Figure
27
27
31
31
31
31
31
31
31
31
31
31
31
31
29
29
29
TELEFUNKEN Semiconductors
Rev. C1, 28-Oct-96
Preliminary Information
17 (34)