AN6123MS-TXL [PANASONIC]
Speech network IC with ALC; 网络语音IC与ALC
| 型号： | AN6123MS-TXL |
| 厂家： | 
PANASONIC |
| 描述： | Speech network IC with ALC |
| 文件： | 总6页 (文件大小：216K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ICs for Telephone
AN6123MS
Speech network IC with ALC
■ Overview
Unit: mm
+0.20
–0.30
2.80
1.50
The AN6123MS is an ALC IC for level control of
audio signal (300 Hz to 3 kHz).
Adopting a mini 5-pin package, mounting on a small
area is possible.
+0.25
–0.05
0.65±0.15
0.65±0.15
5
1
2
4
■ Features
• Wide supply voltage operation range of VCC = 2.4 V to
6.0 V
• Small current consumption of ICC = 500 µA
• Reduction of a bad effect by the external nose ths to
a package for a rear side mounting.
0.1 to 0.30
0.40±0.20
■ Applications
• Cordless telephone, PDC, Pphone
MINI-5D
Block Dim
gm
DET
Publication date: February 2001
SDE00002CEB
1
AN6123MS
■ Pin Descriptions
Pin No.
Description
1
2
3
4
5
VCC
Supply voltage pin
Detection pin
DET
Input
GND
Output
Signal input pin
Grounding pin
Signal output pin
■ Absolute Maximum Ratings
Parameter
Symbol
VC
ICC
Rating
Unit
V
Supply voltage
Supply current
30
mA
mW
°C
Power dissipation
PD
1.5
Operating ambient temperature *
Storage temperature *
Topr
Tstg
−20 to +75
−55 to +125
°C
Note) : Except for the opeing abient mperature and storagtemperature, all ratings are for T = 25°C.
*
a
■ Recommended Operating Range
Parameter
upply volt
bol
Range
Unit
C
2.4 to 6.0
V
■ Elctrical Characteristics at VCC = 3.0 V, f = 1 kHz, Ta = 25°C
eter
Operatin
Symbol
Conditions
Min
Typ Max Unit
ICC
Without signal input
450
900
µA
• Design reference data
Note) The characteristics listed below are theoretical values based on the Idesign and are not guaranteed.
Parameter
Voltage gain
Symbol
GV
Conditions
IN = −40 dBm
IN = −10 dBm
Min
Typ Max Unit
24 26 dB
V
V
22
Output level
VO
−9.5 −7.5 −5.5 dBm
ALC control range
∆ALC Output level varying amount
at VIN = −25 dBm, VIN = 0 dBm
−1.5
1.5
dB
Total harmonic distortion factor
Output noise voltage
Input impedance
THD
VNO
ZIN
At VIN = −10 dBm
1
3
%
dBm
kΩ
Ω
Terminated by CCIT filter input 2 kΩ
Pin 3 input impedance
−70
30
−60
45
15
Output impedance
ZOUT
Pin 5 output impedance
200
400
600
SDE00002CEB
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AN6123MS
■ Application Notes
1. I/O characteristics and distortion
0.33 µF
10 kΩ
Signal output
2 200 pF
GND
Signal input
The I/O characteristics in the circuit shown
on the left can be referred to in the graph below.
Also note that if the C in the circuit is lowered,
the distortion characteristics will become worse
aph 2).
(Input frequency = 1 kHz)
3
4
5
AN6123MS
1
2
1 MΩ
10 µF
C
3.0 V
Graph 1. I/O characteristcs and distortion (w= 10 µF)
12
10
8
0
−5
−10
−15
−20
−2
−30
−5
−40
−5
−50
utput level
6
4
Distortion
2
0
10
−70
−40
−30
−20
−10
0
Input level (dBm)
Graph 2. Distortion characteristics when C is variable
13
12
11
10
9
8
7
6
C = 10 µF
C = 1.0 µF
5
4
C = 4.7 µF
3
C = 2.2 µF
2
1
0
−40
−35
−30
−25
−20
−15
−10
−5
0
5
10
Input lebve; (dBm)
SDE00002CEB
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AN6123MS
■ Application Notes (continued)
2. Input level adjustment for maximum output
You can adjust R in the left circuit diagram
to find the operation point for a maximum out-
put level. For example, since the input level for
a maximum output is −30 dBm when R is open
and the attenuation in the input stage is 20 log
(3k/6.3k) = −6.4 dB when R is 3 kΩ. This means
otal gain loss is −6.4 dB as compared with
pen mode, hence the input level to get the
maxmum otput is −23.6 dBm.
Signal input
0.33 µF
10 kΩ Signal output
GND
(1 kHz)
3.3 kΩ
3
4
5
R
2 200 pF
AN6123MS
1
2
1M Ω
10 µF
10 µF
3.0 V
Likewisee attenuation is 12.7 dB for R =
1 kΩ and d input level becomes 17.3
dBm.
I/O caracteristics
0
−5
−10
−15
−
−
−40
−
−50
−55
−60
R = pen
R 3 kΩ
= 1 kΩ
−70 −−50 −45 −40 −35 −30 −25 −20 −15 −10 −5
0
Input level (dBm)
3. Output level adjustment for a mximum output
The maximum output level can be adjusted
by R in the left circuit diagram.
Signal input
(1 kHz)
0.33 µF
10 kΩ
Signal output
GND
Since the maximum output is −7.5 dBm
when R is open, it is 20 log (20k/30k) = −3.5
dBm at R = 20 kΩIt is an attenuated value of by
3.4 dB against open mode. Therefore, the maxi-
mum output becomes −11 dBm. Likewise, for R
= 10 kΩ, attenuation is 6 dB and the maximum
output becomes −13.5 dBm.
3
4
5
R
2 200 pF
AN6123MS
1
2
1M Ω
10 µF
10 µF
3.0 V
I/O characteristics
0
R = Open
−5
R = 20 kΩ
−10
−15
−20
−25
−30
−35
R = 10 kΩ
−50
−45
−40
−35
−30
−25
−20
−15
−10
Input level (dBm)
SDE00002CEB
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AN6123MS
■ Application Notes (continued)
4. Frequency characteristics
The AN6123MS itself has an almost flat fre-
quency characteristic in the audio frequency band.
The high-band frequency is set with R and C
shown in the left circuit. The cut-off frequency fC
at R = 10 kΩ and C = 2 200 pF, that is the frequency
at which the frequency characteristic deteriorates
dB, is fC = 1/2πCR = 7.2 kHz. At R = 10 kΩ
d C 1 000 pF, it is 16 kHz. (Refer to the graph.)
0.33 µF
Signal input
10 kΩ
Signal output
C
GND
R
3
4
5
AN6123MS
1
2
1 MΩ
10 µF
10 µF
3.0 V
Frequncy chaacteristics
10
8
Fo= 1 000 F
6
4
2
0
Input snal level: −10 dBm
−
−4
6
−8
−0
FC = 2 00 pF
100
1k
10k
100k
(z)
nput frequency
■ ApplicaCircuit Example
Signal output
0.9 V[p-p]
Noise = −70 dBm
Distortion = 1%
Signal inut
to 3 kHz)
GND
0.33 µF
10 kΩ
Ω
R
2200 pF
G = 30 dB
gm
DET
VCC
10 µF
1 MΩ
10 µF
2.4 V to 6.0 V
SDE00002CEB
5
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