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參數(shù)資料
型號(hào): UBA2050
廠商: NXP Semiconductors N.V.
英文描述: One-chip telephone ICs with speech, dialler and ringer functions(帶語(yǔ)音,撥號(hào)及振鈴功能的單片電話芯片)
中文描述: 一個(gè)有語(yǔ)言,撥號(hào)及鈴聲功能(帶語(yǔ)音,撥號(hào)及振鈴功能的單片電話芯片集成電路芯片的電話)
文件頁(yè)數(shù): 17/52頁(yè)
文件大?。?/td> 278K
代理商: UBA2050
2000 May 19
17
Philips Semiconductors
Product specification
One-chip telephone ICs with speech,
dialler and ringer functions
UBA2050(A); UBA2051(A;C)
handbook, full pagewidth
MGT047
Im
Zir
IR
RA
Rast1
SLPE
RSLPE
GND
Zline
RCC
LN
Zbal
Fig.17 Equivalent circuit of an anti-sidetone network in a Wheatstone bridge configuration.
Dialler and ringer parts
S
UPPLY VOLTAGE
(
PIN
V
DD
)
The power supply must be maintained for repertory
memory retention (standby supply voltage) and may drop
down to 1.0 V, being the minimum value of the memory
retention voltage V
MR
. Applying a large capacitor across
the supply terminals can retain the memory when power
connections are broken.
The minimum operating voltage is 2.0 V (the Power-on
reset voltage V
POR
has its maximum value). Below this
value, the internal Power-on reset disables the IC.
A memory integrity check is performed at each start-up.
In the event of a failing check, the memory is cleared.
O
SCILLATOR
(
PIN
XTAL)
The UBA205xx uses an on-chip oscillator as the master
timing source. It needs to be completed by an external
3.579545 MHz quartz crystal or ceramic resonator
connected between pins XTAL and GND. When using an
external ceramic resonator, additional components may
be required depending upon the ceramic resonator
specifications (refer to the product type specification).
By connecting a capacitor with a value of a few pico-farad
in parallel with the resonator, the oscillator frequency can
be decreased. By connecting a capacitor with a value of a
few ten pico-farad in series with the resonator, the
oscillator frequency can be increased. The oscillator starts
when V
DD
reaches the operating voltage level V
POR
and
pin CE/FDI or pin CE/CSI goes HIGH.
Recommended resonator types: Murata
CSA 3.58MG300FGA or CSAC 3.58MGC300FGA.
相關(guān)PDF資料
PDF描述
UBA2050A One-chip telephone ICs with speech, dialler and ringer functions(帶語(yǔ)音,撥號(hào)及振鈴功能的單片電話芯片)
UBA2051 One-chip telephone ICs with speech, dialler and ringer functions
UBA2051A One-chip telephone ICs with speech, dialler and ringer functions
UBA2051AT One-chip telephone ICs with speech, dialler and ringer functions
UBA2051C One-chip telephone ICs with speech, dialler and ringer functions
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UBA2050A 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:One-chip telephone ICs with speech, dialler and ringer functions
UBA2050AT 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:One-chip telephone ICs with speech, dialler and ringer functions
UBA2050T 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:One-chip telephone ICs with speech, dialler and ringer functions
UBA2051 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:One-chip telephone ICs with speech, dialler and ringer functions
UBA2051A 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:One-chip telephone ICs with speech, dialler and ringer functions
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