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AS2525B 数据表(PDF) 21 Page - ams AG

部件名 AS2525B
功能描述  Single-Chip Handsfree Phone CMOS Integrated Circuit
PDF  28 Pages
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制造商  AMSCO [ams AG]
网页  http://www.ams.com
标志 AMSCO - ams AG

AS2525B 数据表(HTML) 21 Page - ams AG

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Datasheet AS2525
austriamicrosystems
Revision 2.1
Page 20 of 27
Receive
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
ARX
Receive Gain, Default
LS to RO; volume reset
LS to LO1/LO2; volume max.
-2.0
25.0
-0.5
27.0
1.0
29.0
dB
dB
ARX-VOL
Volume Control Range
8 steps through [V-]/[V+] keys
15
dB
∆ARX
Variation with Frequency
f = 500 Hz to 3.4 kHz
+/- 0.8
dB
THD
Distortion, RO
Distortion, LO1/LO2
VRO = 0.25 VRMS
VLO1/2 = 0.25 VRMS
2
5
%
%
VAGC
ASCO
tDECAY
tDECAY
Soft Clip Level
Soft Clip Overdrive
Attack Time
Decay Time
VRO =
VRI > 0.8 VRMS
1
10
70
100
VPEAK
dB
µs/6dB
ms/6dB
VNO
VUFC
Noise Output Voltage, RO
Unwanted Frequency
Components
TAMB = 25°C, ARX = 3 dB
50 Hz.........20 kHz
-72
-60
dBmp
dBmp
ZIN
Input Impedance, RI
8
k
Ω
VIN-MAX RI
Input Voltage Range, RI
+/- 2
VPEAK
AST
Side Tone Cancellation
VRI < 0.25 VRMS
26
dB
ZIN
Input Impedance, STB
80
k
Ω
VIN-MAX ST
Input Voltage Range, STB
+/- 2
VPEAK
General Timings
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
td
Key Debounce Time
15
ms
tHS-L
Low/High Debounce
HS Input (going off-hook)
15
ms
tHS-H
High/Low Debounce
HS Input (going on-hook)
210
ms
tFD
Flash Duration
FL 1 (default)
FL 2 (default)
100
275
285
102
300
ms
ms
tPFP
Post Flash Pause
274
ms
tAP
Access Pause
P1 (default)
P2 (default)
0.9
1.0
3.0
1.1
sec.
sec.



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