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AS2525 数据表(PDF) 20 Page - ams AG

部件名 AS2525
功能描述  Single-Chip Handsfree Phone CMOS Integrated Circuit
PDF  26 Pages
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制造商  AMSCO [ams AG]
网页  http://www.ams.com
标志 AMSCO - ams AG

AS2525 数据表(HTML) 20 Page - ams AG

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Preliminary
AS2525
Rev. 1.3
Page 20
May 1999
Receive
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
A
RX
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
A
RX-VOL
Volume Control Range
8 steps through [V-]/[V+] keys
15
dB
∆A
RX
Variation with Frequency
f = 500 Hz to 3.4 kHz
+/- 0.8
dB
THD
Distortion, RO
Distortion, LO1/LO2
V
RO = 0.25 VRMS
V
LO1/2 = 0.25 VRMS
2
5
%
%
V
AGC
A
SCO
t
DECAY
t
DECAY
Soft Clip Level
Soft Clip Overdrive
Attack Time
Decay Time
V
RO =
V
RI > 0.8 VRMS
1
10
70
100
V
PEAK
dB
µs/6dB
ms/6dB
V
NO
V
UFC
Noise Output Voltage, RO
Unwanted Frequency
Components
T
AMB = 25°C, ARX = 3 dB
50 Hz.........20 kHz
-72
-60
dBmp
dBmp
Z
IN
Input Impedance, RI
8
k
Ω
V
IN-MAX RI
Input Voltage Range, RI
+/- 2
V
PEAK
A
ST
Side Tone Cancellation
V
RI < 0.25 VRMS
26
dB
Z
IN
Input Impedance, STB
80
k
Ω
V
IN-MAX ST
Input Voltage Range, STB
+/- 2
V
PEAK
General Timings
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
t
d
Key Debounce Time
15
ms
t
HS-L
Low/High Debounce
HS Input (going off-hook)
15
ms
t
HS-H
High/Low Debounce
HS Input (going on-hook)
210
ms
t
FD
Flash Duration
FL 1 (default)
FL 2 (default)
100
275
285
102
300
ms
ms
t
PFP
Post Flash Pause
274
ms
t
AP
Access Pause
P1 (default)
P2 (default)
0.9
1.0
3.0
1.1
sec.
sec.



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