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參數(shù)資料
| 型號(hào)： | U3500BM |
| 英文描述： | Cordless Telephone Signal Processor |
| 中文描述： | 無(wú)繩電話信號(hào)處理器 |
| 文件頁(yè)數(shù)： | 6/17頁(yè) |
| 文件大?。?/td> | 230K |
| 代理商： | U3500BM |
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U3500BM
Rev. A3, 20-May-98
Preliminary Information
6 (17)
Parameters
Test Conditions / Pins
Symbol
Min.
Typ.
Max.
Unit
Fig.
Earpiece amplifier
BCOMP = 1, EEA = 1, VEXIN = 100 mV
rms
Medium gain
GEA0 GEA1 GEA2 GEA3
0
GEA4 = 1
Minimum gain
GEA0 GEA1 GEA2 GEA3
0
GEA4 = 0
Gain change versus V
S
V
Batt
= 3.1 to 5.2 V
Gain adjust range
Gain adjust step
Output impedance
Distortion
Output offset voltage
VEXIN = 0 mV
rms
Output voltage swing
Increase VEXIN until distor-
tion (RECO1/ RECO2) is 5%
Maximum gain
GEA0 GEA1 GEA2 GEA3
1
GEA4 = 1
Low Frequency Transmitter
GMIC
EPREE
BSCR
1
1
1
Microphone Amplifier
VMIC = 10 mV
rms
, fIN = 1 kHz
Gain
High gain: GMIC = 1
Low gain: GMIC = 0
Gain change versus V
S
V
Batt
= 3.1 to 5.2 V
Differential input impedance
Output impedance
Distortion
VMIC = 10 mV
rms
Output noise
(psophmetrically weighted)
(inputs closed across 200 )
TX Audio
VCOIN = –20 dBV
rms
Gain
GTX (COIN, TXO)
Change of gain TXO
EPREE = 0
Gain between 3.2 and 5.2 V
TX gain adjust range adj. 1
TX gain adjust step adj. 1
LIM gain adjust range adj. 2
LIM gain adjust range adj. 2
TX gain vs. frequency
(preemphasis bypassed)
relative to 1 kHz reference
level 0 dB
3200 Hz
4100 Hz
Gain vs. frequency with
preemphasis relative to 1 kHz
reference level 0 dB
1800 Hz
3200 Hz
4100 Hz
Total band ripple
V
Batt
= 3.1 to 5.2 V
VCOIN = –20 dBV
0
0
0
4
5
6
dB
7
0
0
0
–12
–11
–10
dB
7
–0.2
0.2
dB
dB
dB
7
7
7
7
7
7
31
1
10
0.8
1.2
30
2
200
d
t
%
mV
Vpp
–200
4.8
5.0
7
1
1 1
19
20
21
dB
7
GlTX
1000
G2TX
1000
BCOMP
1
ETX
1
31
23
–0.2
41
32
24
0
75
10
33
25
0.2
103
35
1
50
dB
dB
dB
k
8
8
8
8
8
d
t
%
VMIC = 0 V
rms
high gain
V
rmsp
8
2.5
–0.5
–1
12
0.8
5.5
0
0
15
1
15
1
–0.3
–0.3
0.2
0.9
–23.9
–7.0
–5.8
4.3
7.0
–14.6
8.5
0.5
+1
18
1.2
dB
dB
dB
dB
dB
dB
dB
9
9
9
9
9
9
9
0.8
–1.3
–1.3
–0.8
–1.9
–25.9
–0.8
–6.8
3.3
6.0
16.6
1.2
0.7
0.7
1.2
0.1
–21.9
–6.0
–4.8
5.3
8.0
–12.6
2
100 Hz
300 Hz
1800 Hz
dB
9
100 Hz
300 Hz
dB
9
dB
9
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