U4091B Datasheet, PDF (7/11 Pages) TEMIC Semiconductors – Programmable Telephone Audio Processor

TELEFUNKEN Semiconductors
U4091B
Parameters
Test Conditions / Pin Symbol Min. Typ. Max.
Speaker Amplifier
Minimum line current for No ac signal
I_Lmin
16
operation
Input resistance
14
22
Gain from SAI to SAO
W ^{VSAI = 3 mV,}
RGSA = 20 k
G_SA
30
31
–3
32
Output power
W ^{Load resistance}
R_L = 50 , d < 5%
V_SAI = 20 mV
P_SA
I_L = 20 mA
P_SA
t.b.d.
Output noise (Input SAI
open)
psophometrically weighted
Gain deviation
Mute suppression
Gain change with current
Gain change with frequency
Attack time of anti-clipping
T_amb = – 10 to + 60°C
V_L = 0 dBm,
V_SAI = 4 mV
Pin 23 open
f = 300 to 3400 Hz
20 dB over drive
n_SA
DG_SA
VSAO
DG_SA
DG_SA
tr
200
"1
– 60
"1
" 0.5
5
Release time of anti-clipping
tf
80
DTMF-Amplifier
Test conditions: IMP = 2 mA, IM = 0.3 mA, V_MUTX = VMP
Adjustment range of DTMF I_L = 15 mA
G_D
40
48
gain
Mute active
DTMF amplification
I_L = 15 mA,
VDTMF = 8 mV
Mute active:
MUTX = VMP
Gain deviaton
Input resistance
Distortion of DTMF signal
I_L = 15 mA
T_amb = – 10 to + 60 °C
RGT = 27 kW,
w ^{RGT = 15 kW}
I_L 15 mA
V_L = 0 dBm
Gain deviation with current I_L = 15 to 100 mA
AFS Acoustic feedback suppression
G_D
G_D
R_i
d_D
DGD
40.7 41.7 42.7
" 0.5
60
180 300
26
70
130
2
" 0.5
Adjustment range of attenua-
tion
0
50
Unit Figure
mA
kW
dB
mW
mV_psoph
dB
dBm
dB
dB
ms
ms
dB
dB
dB
kW
%
dB
dB
Rev. A1: 12.07.1995
Preliminary Information
7 (11)