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U3810BM Datasheet(PDF) 11 Page - TEMIC Semiconductors

Part # U3810BM
Description  Multi Standard Feature Phone Integrated Circuit
PDF  31 Pages
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Manufacturer  TEMIC [TEMIC Semiconductors]
Direct Link  http://www.temic.de
Logo TEMIC - TEMIC Semiconductors

U3810BM Datasheet(HTML) 11 Page - TEMIC Semiconductors

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TELEFUNKEN Semiconductors
U3810BM
Rev. A1: 19.01.1996
11 (31)
Parameters
Test conditions
Min.
Typ.
Max.
Unit
Fig.
Transmission
Transmit gain (note 1)
on MIC1 / MIC2
on MICX
VMIC = 3 mVrms
MIS
TX2
TX1
TX0
max. gain
0
1
1
1
min. gain
0
0
0
0
VMICX = 5 mVrms
MIS
TX2
TX1
TX0
max.gain
1
1
1
1
min. gain
1
0
0
0
47.0
39.8
43.0
35.8
48.0
41.0
44.0
37.0
49.0
42.2
45.0
38.2
dB
dB
dB
dB
6
Gain adjustment of micro-
phone amplifier
Gain change between two steps (both on
MIC1/MIC2 and on MICX)
0.8
1.0
1.2
dB
6
Transmit gain without AGC
GT at 28 mA
DGT at IL = 20 to 28 mA
DGT at IL = 28 to 60 mA
VMIC = 3 mVrms, Bit AGC=1
TX2
TX1
TX0
01
1
01
1
01
1
42.6
–0.5
–0.5
44.0
0.0
0.0
45.5
0.5
0.5
dB
6
Gain change between
28 and 60 mA
on MIC1 / MIC2
on MICX
VMIC = 3mVrms:
AT1
AT0
(MIS = 0)
0
0
01
or VMICX = 5 mVrms
10
(MIS = 1)
1
1
3.6
4.9
6.3
7.7
4.1
5.35
6.9
8.2
4.6
5.9
7.4
8.7
dB
6
+ 6 dB delta transmit gain
IL = 28 mA and 60 mA
VMIC = 1.5 mVrms , Bit TX6 = 1
5.4
6.0
6.6
dB
6
Noise at line
psophometrically weighted
GT = max. gain
VMIC = 0 (MIS = 0) ISQ = 0
VMIC = 0 (MIS = 0) ISQ = 1
VMICX = 0 (MIS = 1) ISQ = 1
–79
–73
–75
–70
–64
dBmp
6
*Max. gain is without + 6 dB function which is especially devoted for DTMF
Muted gain
on MIC1 / MIC2
on MICX
VMIC = 3 mVrms (MIS = 0) or
VMIC = 5 mVrms (MIS = 1)
(at max. and min. gain)
Bit IM = 1
Bit IT = 1
VMIC = 3 mVrms (MIS = 1) or
VMIC = 5 mVrms (MIS = 0)
65
65
60
60
dB
dB
dB
dB
6
Microphone input
impedance
on MIC1/MIC 2
on MICX
VMIC = 3 mVrms (MIS = 0)
VMICX = 5 mVrms (MIS = 1)
70
35
110
55
k
W
k
W
6
CMRR common mode
rejection ratio
GT = at maximum gain
65
dB
6
Voltage step on pin 26
when going from transmis-
sion to mute mode
Bit IM from 0 to 1
IL =28 mA and 60 mA
VMIC = 0 (MIS = 0) or
VMICX = 0 (MIS = 1)
At maximum gain
–75
+75
mV
6
Dynamic limiter (anti-clipping) CACL = 470 nF, RACL = 6.8 M
W operational only on MIC1/MIC2
Output voltage swing
(peak to peak value)
TX2
TX1
TX0
111
VMIC = 4 mVrms + 10 dB
3.3
4.4
Vpp
6
Delta output voltage swing
TX2
TX1
TX0
000
VMIC = 9 mVrms +10 dB
–200
0
200
mVpp
6



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