AS2520 austriamicrosystems AG, AS2520 Datasheet - Page 10

• Manufacturer Part Number: AS2520
• Description: Telephone Speech Circuit with Loudhearing and Handsfree
• Manufacturer: austriamicrosystems AG

Preliminary
AC Electrical Characteristics
I
Transmit
Symbol
A
A
A
THD
V
V
A
Z
A
A
V
V
Line Driver
Symbol
V
RL
Rev. 5.1
LINE
A
IN
Z
TX
MF
LLC
AGC
AGC
SCO
AD
MUTE
NO
IN MAX
IN MAX
AC/TEMP
TX/F
= 15 mA; f = 800 Hz; recommended operating conditions unless otherwise specified.
Parameter
Gain (M1/M2 to LS)
Gain (M3/M4 to LS)
Gain (TI to LS)
Variation with Frequency
Gain Range, LLC
Distortion
Soft Clip Level
Soft Clip Level
Soft Clip Overdrive
Input Impedance;
Attenuation Depth
Mute Attenuation
Noise Output Voltage
Input Voltage Range;
M1/M2
Parameter
Input Voltage Range; LI
Return Loss
Temperature Variation
Conditions
HS, LH modes; LLC = A
HF mode; LLC = A
MF mode
f = 500 Hz to 3.4 kHz
Speech mode; LLC = V
V
HS, LH modes; V
HF mode; V
M1/M2 and M3/M4
Mute activated
HS = high; T
LE = high; HS = low; T
Differential
Single ended
Test Conditions
Z
LI
RL
< 0.25 V
= 1000 ohm; T
RMS
Page 10
LI
AMB
=
= 25°C
LI
GND
AMB
=
= 25°C
AMB
SS
GND
or V
= 25°C
DD
Min.
Min.
35
45
12
60
18
+/- 0.8
+/- 0.5
Typ.
36.5
46.5
13.5
+/- 1
650
Typ.
+/- 2
30
15
30
-6
0.5
2
AS2520/21/20B/21B
Max.
Max.
-72
-62
38
48
15
2
May 1999
Units
dB
dB
dB
dB
dB
%
V
mV
dB
kohm
dB
dB
dBmp
dBmp
V
V
Units
V
dB
PEAK
PEAK
PEAK
PEAK
/°C
PEAK