參數(shù)資料
型號: UCB1100
廠商: NXP Semiconductors N.V.
英文描述: Advanced modem/audio analog front-end
中文描述: 先進的調(diào)制解調(diào)器/音頻模擬前端
文件頁數(shù): 10/36頁
文件大?。?/td> 290K
代理商: UCB1100
Philips Semiconductors
Preliminary specification
UCB1100
Advanced modem/audio analog front-end
1998 May 08
10
6.1.1
Audio Input Specifications
SYMBOL
PARAMETER
CONDITIONS
LIMITS
UNIT
MIN
TYP
MAX
F
SA
audio sample frequency
26
kHz
V
INAM
full scale input voltage
0 dB gain setting
0.28
V
pp
V
MICP
DC bias voltage micp input
audio input path enabled
1.4
V
R
INPAI
input impedance
audio input path enabled
25
k
R
HINE
impedance micgnd to vssa1
audio input path enabled
100
G
SA
gain step size
1.3
1.5
1.7
dB
N
AGS
number of gain steps
32
G
mA
maximum gain
46.5
dB
G
EAR
gain error (accuracy of gain setting)
0 dB gain setting,
full scale input voltage
–1
0
1
dB
ROES
AI
resolution audio input
12
bit
DNA
AI
differential non linearity audio input ADC
0.9
LSB
THUD
AI
total harmonic distortion
0db input gain selected
0.28Vpp, 1kHz to micp
0.03
%
THD
MGAI
total harmonic distortion
46.5dB gain setting,
1mVpp, 1kHz to micp
0.1
%
SNR
AI
signal to noise ratio
audio input
0dB input gain selected
0.28Vpp, 1kHz to micp
65
dB
SNR
MGAI
signal to noise ratio
46.5dB gain selected
1mVpp, 1kHz to micp
50
dB
RIP
IA
pass band ripple
F
PLAI
<Fsig < F
PHAI
0.5
dB
SBR
IA
stop band rejection
audio input
F
SHAI
<Fsig.<20kHz
70
dB
E
IA
out of band rejection
audio input
F > 20kHz
t.b.f.
mVrms
NOTE:
Coding scheme for ADC output data is 2’s complement.
F
SHA
F
PHA
FREQUENCY (Hz)
F
PLA
RIP
IA
0dB
SBR
IA
SN00132
Figure 7.
Audio Input Path Frequency Response
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F
= 0.42 * F
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F
= 0.6 * F
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