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參數(shù)資料
| 型號： | U3500BM |
| 英文描述： | Cordless Telephone Signal Processor |
| 中文描述： | 無繩電話信號處理器 |
| 文件頁數(shù)： | 7/17頁 |
| 文件大?。?/td> | 230K |
| 代理商： | U3500BM |
U3500BM
Preliminary Information
Rev. A3, 20-May-98
7 (17)
Parameters
Test Conditions / Pins
Symbol
Min.
Typ.
Max.
Unit
Fig.
Limiter
Output voltage
Increase VCOIN until d = 5%
at TX0 then measure VTX0
ETX = 0, VCOIN = –l0 dBV
attenuation at TX0 output
1.05
2.0
Vpp
9
Mute
56
dB
9
Output impedance TXO
Compressor
BSCR EPREE
1
0
Input impedance
Gain reference level G0TX
Gain change when
compressor is bypassed
Gain tracking
7
10
14
k
9
G2TX0
0
G2TX1
1
BCOMP = 1
VCOIN = –10 dBV
rms
VCOIN = –10 dBV
rms
BCOMP = 1
VCOIN = –30 dBV
rms
VCOIN = –50 dBV
rms
VCOIN = –60 dBV
rms
VCOIN = –70 dBV
rms
VCOIN= step
–30 dBV
rms
measure time after step when
output voltage has 1.5 times
the final value
VCOIN= step
–18 dBV
rms
measure time after step when
output voltage has 0.75 times
the final value
G2TX2
0
G2TX3
1
EIX
1
GlTX0
0
9
1
0.5
G1TX1
0
14
5.5
G1TX2
1
22
10
0.5
G1TX3
0
k
dB
dB
9
9
G
0TX
9
–11
–21
–22
–30
3.5
–9
–19
–28
dB
9
Attack time
–18 dBV
rms
t
f
ms
9
Release time
–30 dBV
rms
t
f
14.4
ms
9
Scrambler
EPREE
0
Conversion gain versus
frequency FIN (1 kHz)
reference level 0 dB
BSCR
0
BCOMP
1
FIN=1kHz, FOUT=3.1kHz
FIN=0.1kHz, FOUT=4.0kHz
FIN=0.3kHz, FOUT=3.8kHz
FIN=0.7kHz, FOUT=3.4kHz
FIN=1.8kHz, FOUT=2.3kHz
FIN=2.6kHz, FOUT=1.5kHz
FIN=3.2kHz, FOUT=0.9kHz
FIN=3.4kHz, FOUT=0.7kHz
–1.0
–4.4
–2.1
–0.8
–1.1
–1.1
–2.5
–5
0
–3.4
–1.1
0.2
–0.1
–0.1
–0.5
–4
10
1.0
–2.4
–0.1
1.2
0.9
0.9
–0.5
–3
20
dB
11
Carrier break through
Descrambler
EDEE
0
Conversion gain vs.
frequency
mV
rms
BSCR
0
BCOMP
1
FIN=4kHz, FOUT=0.1kHz
FIN=3.8kHz, FOUT=0.3kHz
FIN=3.4kHz, FOUT=0.7kHz
FIN=2.3kHz, FOUT=1.8kHz
FIN=l.5kHz, FOUT=2.6kHz
FIN=0.9kHz, FOUT=3.2kHz
FIN=0.7kHz, FOUT=3.4kHz
Measure FOUT = 4.099 kHz
–3.6
–1.3
–0.4
–1.5
–0.4
–1.7
–1.9
–2.6
–0.3
0.6
0.5
0.6
–0.3
–0.9
0.1
–1.6
0.7
1.6
0.5
1.6
0.7
0.1
0.5
dB
11
Carrier break through
mV
rms
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