as2525 austriamicrosystems, as2525 Datasheet - Page 20

• Manufacturer Part Number: as2525
• Description: Single Chip Handsfree Phone Cmos Integrated Circuit
• Manufacturer: austriamicrosystems

Datasheet AS2525
Receive
General Timings
Revision 2.1
A
A
THD
V
A
t
t
V
V
Z
V
A
Z
V
DECAY
DECAY
Symbol
IN
IN
Symbol
RX
RX-VOL
AGC
SCO
NO
UFC
IN-MAX RI
ST
IN-MAX ST
A
RX
t
t
t
HS-H
HS-L
t
t
PFP
t
FD
AP
d
Receive Gain, Default
Volume Control Range
Variation with Frequency
Distortion, RO
Distortion, LO1/LO2
Soft Clip Level
Soft Clip Overdrive
Attack Time
Decay Time
Noise Output Voltage, RO
Unwanted Frequency
Components
Input Impedance, RI
Input Voltage Range, RI
Side Tone Cancellation
Input Impedance, STB
Input Voltage Range, STB
Key Debounce Time
Low/High Debounce
High/Low Debounce
Flash Duration
Post Flash Pause
Access Pause
Parameter
Parameter
LS to RO; volume reset
LS to LO1/LO2; volume max.
8 steps through [V-]/[V+] keys
f = 500 Hz to 3.4 kHz
V
V
V
V
T
50 Hz.........20 kHz
V
HS Input (going off-hook)
HS Input (going on-hook)
FL 1 (default)
FL 2 (default)
P1 (default)
P2 (default)
AMB
RO
LO1/2
RO
RI
RI
> 0.8 V
< 0.25 V
= 0.25 V
=
= 25°C, A
= 0.25 V
Conditions
Conditions
RMS
RMS
RMS
RMS
RX
= 3 dB
Min.
25.0
Min.
-2.0
100
275
0.9
26
+/- 0.8
Typ.
+/- 2
+/- 2
Typ.
27.0
-0.5
100
210
285
274
1.0
3.0
15
10
70
80
15
15
1
8
Max.
Max.
29.0
102
300
1.0
-72
-60
1.1
2
5
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ms/6dB
µs/6dB
Units
dBmp
dBmp
Units
V
V
V
sec.
sec.
k
k
dB
dB
dB
dB
dB
ms
ms
ms
ms
ms
ms
PEAK
PEAK
PEAK
dB
%
%