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參數資料
| 型號： | UBA2051A |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | One-chip telephone ICs with speech, dialler and ringer functions |
| 中文描述： | 一個有語言，撥號及振鈴電話集成電路芯片的功能 |
| 文件頁數： | 34/52頁 |
| 文件大小： | 292K |
| 代理商： | UBA2051A |
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2000 May 19
34
Philips Semiconductors
Product specification
One-chip telephone ICs with speech,
dialler and ringer functions
UBA2050(A); UBA2051(A;C)
I
DD
available supply current for
peripherals in on-line mode
I
line
≥
11 mA;
DTMF generator on;
no AC signal on the line
I
line
≥
11 mA;
DTMF generator off;
no AC signal on the line
I
line
= 0 mA;
V
CC
discharging;
V
DD
= 1.2 V
1.9
mA
2.6
mA
I
DD(MR)
memory retention current
(internal consumption
on V
DD
)
memory retention voltage
Power-on reset trip level
300
nA
V
DD(MR)
V
DD(POR)
Transmit stages
1.0
1.3
1.65
3.6
2.0
V
V
note 1
M
ICROPHONE AMPLIFIER
(
PINS
MIC+
AND
MIC
AND
LN)
Z
i
input impedance
differential between
pins MIC+ and MIC
single-ended between
pin MIC+ or MIC
and GND
V
MIC
= 4 mV (RMS)
68
k
34
k
G
v(TX)
voltage gain from pins
MIC+ or MIC
to LN
voltage gain reduction of
microphone amplifier
voltage gain variation with
frequency
voltage gain variation with
temperature
common mode rejection ratio
maximum sending signal
voltage level (RMS value)
43.2
44.2
45.2
dB
G
v(TX)
internal MUTE active
80
dB
G
v(TX)(f)
f = 300 to 3400 Hz;
referenced to f = 1 kHz
T
amb
=
25 to +75
°
C;
referenced to T
amb
= 25
°
C
±
0.2
dB
G
v(TX)(T)
±
0.3
dB
CMRR
V
LN(max)(rms)
1.8
80
2.15
0.35
78
dB
V
V
dBmp
I
line
= 15 mA; THD = 2%
I
line
= 4 mA; THD = 10%
V
n(LN)
noise output voltage at pin LN psophometrically weighted
(P53 curve); pins MIC+
and MIC
shorted through
200
DTMF
AMPLIFIER
(
PIN
DTMF)
Z
i
input impedance
G
v(DTMF)
voltage gain from pin
DTMF to pin LN
G
v(DTMF)
voltage gain reduction of
DTMF amplifier
G
v(DTMF)(f)
voltage gain variation with
frequency
21
26
k
dB
in tone dialling mode;
V
DTMF
= 20 mV (RMS)
internal MUTE inactive
80
dB
f = 300 to 3400 Hz;
referenced to f = 1 kHz
±
0.2
dB
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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|---|---|
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