U3810BM データシートの表示（PDF） - Temic Semiconductors
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U3810BM Datasheet PDF : 31 Pages
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TELEFUNKEN Semiconductors
U3810BM
Parameters
Transmission
Transmit gain (note 1)
on MIC1 / MIC2
Test conditions
Min. Typ. Max.
VMIC = 3 mVrms
MIS TX2 TX1 TX0
max. gain 0
1
1
1
47.0 48.0 49.0
min. gain
0
0
0
0
39.8 41.0 42.2
on MICX
VMICX = 5 mVrms
max.gain
min. gain
MIS TX2 TX1 TX0
1
1
1
1
1
0
0
0
43.0
35.8
44.0
37.0
45.0
38.2
Gain adjustment of micro- Gain change between two steps (both on
phone amplifier
MIC1/MIC2 and on MICX)
0.8 1.0
1.2
Transmit gain without AGC VMIC = 3 mVrms, Bit AGC=1
DDGGGT TTataa2tt8IILLm==A2208
to
to
28
60
mA
mA
TX2 TX1 TX0
0
1
1
42.6 44.0 45.5
0
1
1
–0.5
0.0 ă0.5
0
1
1
–0.5
0.0 ă0.5
Gain change between
28 and 60 mA
on MIC1 / MIC2
on MICX
VMIC = 3mVrms:
(MIS = 0)
or VMICX = 5 mVrms
(MIS = 1)
AT1 AT0
00
3.6
4.1
4.6
01
4.9 5.35
5.9
10
6.3
6.9
7.4
11
7.7
8.2
8.7
+6 dB delta transmit gain
Noise at line
psophometrically weighted
IL = 28 mA and 60 mA
VMIC = 1.5 mVrms , Bit TX6 = 1
GT = max. gain
VMIC = 0 (MIS = 0) ISQ = 0
VMIC = 0 (MIS = 0) ISQ = 1
VMICX = 0 (MIS = 1) ISQ = 1
5.4 6.0
6.6
– 79 – 75
– 73 – 70
– 64
*Max. gain is without + 6 dB function which is especially devoted for DTMF
Muted gain
on MIC1 / MIC2
on MICX
Microphone input
impedance
on MIC1/MIC 2
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)
VMIC = 3 mVrms (MIS = 0)
VMICX = 5 mVrms (MIS = 1)
65
65
60
60
70 110
35
55
CMRR common mode
GT = at maximum gain
65
rejection ratio
Voltage step on pin 26
IL =28 mA and 60 mA
when going from transmis- VMIC = 0 (MIS = 0) or
sion to mute mode
VMICX = 0 (MIS = 1)
– 75
+75
Bit IM from 0 to 1
At maximum gain
Dynamic limiter (anti-clipping) CACL = 470 nF, RACL = 6.8 MW operational only on MIC1/MIC2
Output voltage swing
(peak to peak value)
Delta output voltage swing
TX2 TX1 TX0
111
VMIC = 4 mVrms + 10 dB
TX2 TX1 TX0
000
VMIC = 9 mVrms + 10 dB
3.3
4.4
–200 0
200
Unit Fig.
dB
dB
6
dB
dB
dB 6
dB 6
dB 6
dB 6
6
dBmp
dB 6
dB
dB
dB
kW 6
kW
dB 6
mV 6
Vpp
6
mVpp 6
Rev. A1: 19.01.1996
11 (31)
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