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U4091B PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 U4091B
기능 Programmable Telephone Audio Processor
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U4091B 데이터시트, 핀배열, 회로
TELEFUNKEN Semiconductors
U4091B
Programmable Telephone Audio Processor
Description
The programmable telephone audio processor U4091B is
a linear integrated circuit for use in feature phones, an-
swering machines and fax machines. It contains the
speech circuit, tone ringer interface with dc/dc converter,
sidetone equivalent and ear protection rectifiers. The cir-
cuit is line powered and contains all components
necessary for amplification of signals and adaptation to
the line.
An integrated voice switch with loudspeaker amplifier al-
lows handsfree or loudhearing operation. With an
anti-feedback function, acoustical feedback during loud-
hearing can be reduced significantly. The generated
supply voltage is suitable for a wide range of peripheral
circuits.
Features
D Speech circuit with anti-clipping
D Tone ringer interface with dc / dc converter
D Speaker amplifier with anti-distortion
D Power supply management, regulated, unregulated
and a special supply for electret microphone
D Voice switch
Benefits
D Savings of one piezo electric transducer
D Complete system integration of analog signal proces-
sing on one chip
D Very few external components
Applications
Feature phone, answering machine, fax machine, speaker
phone
Speech
circuit
Voice
switch
ÁÁBUÁÁS
Audio
amplifier
Tone
ringer
Loudhearing
and
Tone ringing
MC with
EEPROM/
DTMF
Rev. A1: 12.07.1995
Preliminary Information
1 (11)




U4091B pdf, 반도체, 판매, 대치품
U4091B
Absolute Maximum Ratings
Parameters
Line current
DC line voltage
Maximum input current
Junction temperature
Ambient temperature
Storage temperature
Total power dissipation, Tamb = 60°C
Thermal Resistance
Parameters
Junction ambient SSO44
TELEFUNKEN Semiconductors
Symbol
IL
VL
IRING
Tj
Tamb
Tstg
Ptot
Value
140
12
15
125
– 25 to + 75
– 55 to + 150
0.9
Unit
mA
V
mA
°C
°C
°C
W
Symbol
RthJA
Value
70
Unit
K/W
4 (11)
Preliminary Information
Rev. A1: 12.07.1995

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U4091B 전자부품, 판매, 대치품
TELEFUNKEN Semiconductors
U4091B
Parameters
Test Conditions / Pin Symbol Min. Typ. Max.
Speaker Amplifier
Minimum line current for
operation
No ac signal
ILmin
16
Input resistance
14 22
Gain from SAI to SAO
WVSAI = 3 mV,
RGSA = 20 k
GSA 30 31
– 3 32
Output power
WLoad resistance
RL = 50 , d < 5%
VSAI = 20 mV
IL = 20 mA
PSA
PSA
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
Tamb = – 10 to + 60°C
VL = 0 dBm,
VSAI = 4 mV
Pin 23 open
f = 300 to 3400 Hz
20 dB over drive
nSA
DGSA
VSAO
DGSA
DGSA
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, VMUTX = VMP
Adjustment range of DTMF IL = 15 mA
gain Mute active
GD 40
48
DTMF amplification
IL = 15 mA,
VDTMF = 8 mV
Mute active:
MUTX = VMP
Gain deviaton
Input resistance
Distortion of DTMF signal
IL = 15 mA
Tamb = – 10 to + 60 °C
RGT = 27 kW,
wRGT = 15 kW
IL 15 mA
VL = 0 dBm
Gain deviation with current IL = 15 to 100 mA
AFS Acoustic feedback suppression
GD
GD
Ri
dD
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
mVpsoph
dB
dBm
dB
dB
ms
ms
dB
dB
dB
kW
%
dB
dB
Rev. A1: 12.07.1995
Preliminary Information
7 (11)

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