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參數資料
型號: UCB1100
廠商: NXP Semiconductors N.V.
英文描述: Advanced modem/audio analog front-end
中文描述: 先進的調制解調器/音頻模擬前端
文件頁數: 14/36頁
文件大小: 290K
代理商: UCB1100
Philips Semiconductors
Preliminary specification
UCB1100
Advanced modem/audio analog front-end
1998 May 08
14
6.2.1
Telecom Input Specifications
SYMBOL
PARAMETER
CONDITIONS
LIMITS
UNIT
MIN
TYP
MAX
F
ST
V
INTM
V
TIN
A
SIT
N
STI
A
MTI
sample frequency
10
kHz
full scale input voltage
0 dB attenuation setting
0.519
V
p
V
DC bias voltage Tinp / Tinn pins
telecom input path enabled
1.4
attenuation step size
6
dB
number of attenuation steps
2
maximum attenuation
6
dB
A
ERTI
attenuation error
(accuracy of attenuation setting)
0 dB attenuation setting,
full scale input voltage
–0.5
0
0.5
dB
R
TI
input impedance
25
k
SINAD
TI
total harmonic distortion
+ noise to signal ratio
full scale input signal
70
dB
SINAD
TIS
total harmonic distortion
+ noise to signal ratio
–43dBm input voltage
32
dB
DNL
TI
RES
TI
RIP
TI
RIP
VTI
differential non linearity ADC
2
LSB
resolution
14
bit
pass band ripple, no voice filter
F
PLTI
< Fsig < F
PHTI
F
VHTI
< Fsig < F
PHTI
0.6
dB
pass band ripple, voice filter activated
0.6
dB
SBR
VTI
stop band rejection,
voice filter activated
Fsig < F
VLTI
30
dB
SBR
HTI
stop band rejection
F
SHTI
<Fsig.<F
ST
600
line,
1:1 line transformer with
156
winding resistance
55
dB
S
SUP
sidetone suppression effectiveness
20
dB
NOTE:
Coding scheme for ADC output data is 2’s complement.
F
SHT
F
PHT
FREQUENCY (Hz)
F
PLT
RIP
TI
0dB
SBR
HTI
SN00136
Figure 11.
Telecom Input Frequency Response,
No Voice Filter
F
SHT
F
PHT
FREQUENCY (Hz)
F
VLT
RIP
TI
0dB
SIB
HTI
F
VHT
SIB
VTI
SN00137
Figure 12.
Telecom Input Frequency Response,
Voice Filter Enabled
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F
PLT
= 0.00016 * F
ST
F
PHT
= 0.42 * F
ST
SHT
ST
VLT
ST
VHT
ST
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