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PDF UBA2050 Data sheet ( Hoja de datos )
| Número de pieza | UBA2050 | |
| Descripción | (UBA2051) One-chip telephone ICs with speech / dialler and ringer functions | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
DATA SHEET
UBA2050(A); UBA2051(A;C)
One-chip telephone ICs with
speech, dialler and ringer functions
Product specification
Supersedes data of 1998 Mar 24
File under Integrated Circuits, IC03
2000 May 19
1 page  
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KT
DP/FL DMO
LED
VDD DTMF
IR
LN
DIALLER
PART
FLASH
PULSE
DTMF
INDICATION
R1
R2
R3
R4
KEYBOARD
KEYTONE
C1 DETECTOR
MUTE
C2
C3 dB
C4
TONE
MDY
DTMF/
GENERATOR
RINGER
VDD
REGULATOR
VCC
SLPE
XTAL
CE/CSI
CE/FDI
TIMING/
CONTROL
RINGER
PART
DETECTOR/
GENERATOR
UBA205xx
UBA2050 and UBA2050A: C4 output not available.
UBA2051 and UBA2051A: KT output not available.
UBA2050 and UBA2051: DMO output available, LED output not available.
UBA2050A and UBA2051A: LED output available, DMO output not available.
UBA2051C: KT output available, DMO and LED outputs not available.
MDY/TONE
MIC+ MIC−
SPEECH/TRANSMISSION
PART
EARPIECE
AMPLIFIER
GAR
QR
RECEIVE
AMPLIFIER
AGC
TRANSMIT
AMPLIFIER
SUPPLY
RX
AGC
REG
VCC
GND
FCA138
SLPE
Fig.1 Block diagram.
5 Page 
Philips Semiconductors
One-chip telephone ICs with speech,
dialler and ringer functions
Product specification
UBA2050(A); UBA2051(A;C)
handbook, full pagewidth Rline
Rexch
Iline
ILN
LN
ISUP
RCC
ICC
VCC
VDD
IDD
CVCC
100 µF
Vexch
SENSE
UBA205xx
SWITCH
VDD regulator
GND
peripherals
CVDD
220 µF
FCA131
Fig.10 VDD regulator configuration.
SET IMPEDANCE
In the audio frequency range, the dynamic impedance is
mainly determined by resistor RCC. The equivalent
impedance of the circuit is illustrated in Fig.11.
handbook, halfpagLeN
LEQ
SLPE
GND
Vref
RSLPE
20 Ω
RP
REG
RCC
619 Ω
VCC
CREG
4.7 µF
CVCC
100 µF
FCA132
2000 May 19
LEQ = CREG × RSLPE × Rp.
Internal resistance RP = 17.5 kΩ.
Fig.11 Equivalent impedance between
LN and GND.
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet UBA2050.PDF ] | |
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| UBA2050 | (UBA2051) One-chip telephone ICs with speech / dialler and ringer functions | NXP Semiconductors |
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