U4091B Datasheet, PDF (6/11 Pages) TEMIC Semiconductors – Programmable Telephone Audio Processor

U4091B
TELEFUNKEN Semiconductors
Parameters
Test Conditions / Pin Symbol Min. Typ. Max.
w ^{Receiving amplifier, IL = 14 mA, RGR = 62 k, unless otherwise specified, VGEN = 300 mV}
Adjustment range of
I_L 14 mA,
G_R
–7
+ 15
receiving gain
single ended
differential
MUTR = GND
Receiving amplification
Amplification of DTMF
signal from DTMF IN to
RECO 1, 2
Frequency response
Gain change with current
Gain deviation
Ear protection differential
MUTE suppression
a) RECATT
RGR = 62 kW
w ^differential
I_L 14 mA
V_MUTX = V_MP
I_L > 14 mA,
f = 300 to 3400 Hz
I_L = 14 to 100 mA
w ^{Tamb = –10 to +60°C}
I_L 14 mA
w ^{VGEN = 11 Vrms}
I_L 14 mA
MUTR = open
G_R
– 1.75 – 1 – 0.25
G_RM
7
10
13
DG_RF
DG_R
DG_R
EP
" 0.5
" 0.5
" 0.5
2.2
DG_R
60
b) RA2
c) DTMF operation
v Output voltage d 2%
differential
V_MUTR = V_MP
V_MUTX = V_MP
I_L = 14 mA
Z_ear = 68 nF + 100 W
0.775
v^{Maximum output current}
d 2%
Z_ear = 100 W
4
Receiving noise
psophometrically weigthed
w ^{Zear = 68 nF + 100 W}
I_L 14 mA
ni
Output resistance
each output against
Ro
GND
– 80 – 77
10
Line loss compensation
Gain at low operating current
RAGA = 20 kW,
I_L = 100 mA
I_L = 10 mA
I_MP = 1 mA
I_M = 300 mA
V_GEN = 560 mV
RDC = 68 kW
DG_RI
– 7.0 – 6.0 – 5.0
G_R
–2
–1
0
AC impedance
Distortion at low operating
current
V_IMPSEL = GND
V_IMPSEL = V_MP
I_L = 10 mA
I_MP = 1 mA
V_GEN = 560 mV
RDC = 68 kW
Z_imp
570 600 640
Z_imp
840 900 960
dR
5
Unit Figure
dB
dB
dB
dB
dB
dB
Vrms
dB
Vrms
mA
(peak)
dBmp
W
dB
dB
W
W
%
6 (11)
Preliminary Information
Rev. A1: 12.07.1995