參數(shù)資料
型號(hào): UCB1200BE
廠商: NXP SEMICONDUCTORS
元件分類: 調(diào)制器/解調(diào)器
英文描述: Advanced modem/audio analog front-end
中文描述: MODEM-SUPPORT CIRCUIT, PQFP48
封裝: 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, SOT-313-2, LQFP-48
文件頁(yè)數(shù): 41/54頁(yè)
文件大?。?/td> 1052K
代理商: UCB1200BE
1998 Jul 22
41
Philips Semiconductors
Product specification
Advanced modem/audio analog front-end
UCB1200
AC CHARACTERISTICS
V
SSD
= V
SSA1
= V
SSA2
= V
SSA3
= 0 V; V
DDD
= V
DDA1
= V
DDA2
= 3.3 V
+/10%
; T
amb
=25
°
C; V
I(ref)
= 1.2 V;
f
i(sibclk)
= 9.216 MHz; unless otherwise specified
.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Audio Input;
notes 1 and 2
f
sa
V
I(RMS)
V
I(BIAS)
Z
i
Z
(18-20)
audio sample frequency
input voltage (RMS value) 0 dB gain setting
DC bias voltage
input impedance
impedance MICGND -
VSSA1
gain step size
number of gain settings
gain
gain error
resolution
ADC differential linearity
error
total harmonic distortion
90
1.35
20
100
1.4
25
26
125
1.5
-
200
kHz
mV
V
k
MICP input
G
step
N
step
G
v
E
G
RES
LE
(d)(ADC)
1
15
1
1.5
32
22.5
12
2
28
1
1
dB
dB
dB
bit
LSB
(AUD_GAIN=011111)
each gain step
THD
input gain = 0 dB
(AUD_GAIN = 00000);
input signal = 1 mVrms
input gain = 22.5 dB
(AUD_GAIN[n] = 01111);
AC coupling enabled
(AUD_OFF_CAN = 1);
input gain = 0 dB
(AUD_GAIN = 00000)
input signal = 1mV (RMS);
input gain = 22.5 dB
(AUD_GAIN[n] = 01111);
-40
dB
-26
dB
S/N
signal-to-noise ratio
50
dB
25
dB
PBRR
SBR
D
offset
Audio Output;
notes 4 and 5
pass-band ripple rejection f
pla
< f
sig
< f
pha(3)
stop-band rejection
digital offset
50
1.2
50
dB
dB
LSB
f
sha
< f
sig
< 20 kHz
(3)
no signal applied to MICP
V
O(RMS)
output voltage (RMS
value)
attenuation = 0 dB,
differentially measured
between SKPRN and
SPRKP
1.0
1.25
1.5
V
E
offset
offset error (peak-to-peak
value)
DC bias voltage
attenuation step size
(analog section)
number of attenuation
steps
100
mV
V
O(BIAS)
α
step
SPKRP/SKPRN
1.2
2.5
1.4
3.0
1.6
3.5
V
dB
N
step
24
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