BL34118
ATTENUATOR CONTROL
(T
A
= +25°C)
CT Voltage ( Pin 14 – VB)
Rx Mode (VLC = VB)
Idle Mode
Tx Mode
CT Source Current (switching to Rx mode)
CT Sink Current (switching to Tx mode)
CT Slow Idle Current
CT Fast Idle Internal Resistance
VLC Input Current
Dial Tone Detector Threshold
I
CTR
I
CTT
I
CTS
R
FI
I
VLC
V
DT
V
CT
-
-
-
-85
+40
-
1.5
-
10
+240
0
-240
-60
+60
0
2.0
-60
15
-
-
-
-40
+85
-
3.6
-
20
µA
µA
µA
kΩ
nA
mV
mV
MICROPHONE AMPLIFIER
(T
A
= +25°C, V
MUT
≤
0.8V, A
VCL
= 31 dB unless otherwise noted)
Output Offset (VMCO – VB, Feedback R = 180 kΩ)
Open Loop Gain (f < 100 Hz)
Gain Bandwidth
Output High Voltage (Iout = -1.0mA, Vcc = 5.0V)
Output Low Voltage (Iout = +1.0mA)
Input Bias Current (@ MCI)
Muting (∆Gain) (f = 1.0KHz, V
MUT
= 2.0 V)
(300 Hz < f < 10 kHz)
MUT Input Resistance ( Vcc = V
MUT
= 6.5V)
MUT Input – High
MUT Input – Low
Distortion ( 300 Hz < f < 10 kHz)
R
MUT
V
MUTH
V
MUTL
THD
M
MCO
VOS
A
VOLM
GBW
M
V
MCOH
V
MCOL
I
BM
GMT
-50
70
-
3.7
-
-
-55
-
50
2.0
0
-
0
80
1.0
-
-
-40
-
-68
90
-
-
0.15
+50
-
-
-
200
-
-
-
-
Vcc
0.8
-
kΩ
Vdc
Vdc
%
mVdc
dB
MHz
Vdc
mVdc
nA
dB
HYBRID AMPLIFIER
(T
A
= +25°C)
HTO- Offset (VHTO- - VB, Feedback R = 51 kΩ)
HTO- to HTO+ Offset (Feedback R = 51 kΩ)
Open Loop Gain ( HTI to HTO-, f < 100 Hz)
Gain Bandwidth
Closed Loop Gain ( HTO- to HTO+)
Input Bias Current ( @ HTI)
HTO- High Voltage ( Iout = -5.0 mA)
HTO- Low Voltage ( Iout = +5.0 mA)
HTO+ High Voltage ( Iout = -5.0 mA)
HTO+ Low Voltage ( Iout = +5.0 mA)
Distortion ( 300 Hz < f < 10 kHz, See Figure 1)
H
VOS
HB
VOS
A
VOLH
GBW
H
A
VCLH
I
BH
V
HT-H
V
HT-L
V
HT+H
V
TH+L
THD
H
-20
-30
60
-
-0.35
-
3.7
-
3.7
-
-
0
0
80
1.0
0
-30
-
-
-
-
0.3
+20
+30
-
-
+0.35
-
-
250
-
450
-
mVdc
mVdc
dB
MHz
dB
nA
Vdc
mVdc
Vdc
mVdc
%
http://www.belling.com.cn
-5-
8/15/2006
Wrote by 2006
Total
11 Pages
BELLING [ SHANGHAI BELLING CO., LTD. ]
