U3810BM Datasheet, PDF (14/31 Pages) TEMIC Semiconductors – Multi Standard Feature Phone Integrated Circuit

U3810BM
TELEFUNKEN Semiconductors
Parameters
Test conditions
Min. Typ. Max. Unit Fig.
Receiver output
offset (pin 29 – 30)
I_L = 28 mA and 60 mA
Maximum gain RX6 = 1
– 800
+600 mV 7
Automatic sidetone
balancing (V_R*/V_MIC)
At maximum gain
V_MIC = 4 mV_rms
I_L = 28 mA
I_L = 60 mA
24
dB 6
16
dB
Digital balanced sidetone
tested on receiving gain
V_GEN = 0.3 V_rms maximum gain
close switch S1 Bit IBAL = 1
V_R/V_L
Bits BAL2 BAL1BAL0
0 00
18.0 19.0 20.0 dB 7
0 01
16.9 17.9 18.9 dB
0 10
15.5 16.5 17.5 dB
0 11
14.5
dB
1
01
12.3
dB
1 10
9.2
dB
1 11
4.2 5.7
7.2 dB
Confidence level
attenuation
Confidence level gain
V_R/V_MIC
Z line match. impedance
V_MIC = 2 mV_rms Bit I_R = 1
V_MIC = 2 mV_rms I_R = 1 EC = 1
V_GEN = 0.3 V_rms I_L = 28 and 60 mA
60
dB 6
19.5 22.0 23.5 dB 6
520 570
620
W
7
Il
IDC
VL
V_GEN
SIN
VZ=17V
68k
6 5 4 3 2 1 44 43 42 41 40
470nF
7 ^TAD
TAL
RESET
CO
39
8 _VDD
470uF
9 VCC
LVIO ³⁸
C 37
10 VL
D 36
11 SAI
12 SAIX _U3810BM
MF 35
STS ³⁴
13 VSA
RECI ³³
14 SO1
STL ³²
15 SO2
RECOX ³¹
61.9k
16 GND
RECO1 ³⁰
17
RREF
CEI
RECO2
TACL
29
18 19 20 21 22 23 24 25 26 27 28
455kHz
serial bus
470nF
VE3
S1
60k
60k
0.1uF
47uF
62
Figure 7 Test circuit
94 9333
14 (31)
Rev. A1: 19.01.1996