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AS3525 Datasheet(PDF) 132 Page - ams AG

Part # AS3525
Description  Advanced Audio Processor System
PDF  194 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3525 Datasheet(HTML) 132 Page - ams AG

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AS3525-A/-B C22O22
Data Sheet, Confidential
© 2005-2009, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved.
www.austriamicrosystems.com
Revision 1.13
132
- 194
7.4.6.6
Power Save Options
To save power, especially when driving 32 Ohm loads, a reduction of the bias current can be selected. Together with switching off the phantom
ground this gives 4 possible operating modes.
Table 111 Headphone Power-Save Options
HPCM_OFF
IBR_HPH
IDD_HPH (typ.)
Load
0
0
2.2mA
16 Ohm
1
0
1.5mA
16 Ohm
0
1
1.5mA
32 Ohm
1
1
1.0mA
32 Ohm
BVDD = 3.3V, TA= 25oC unless otherwise mentioned
7.4.6.7
Parameter
Table 112 Power Amplifier Block Characteristics
Symbol
Parameter
Notes
Min
Typ
Max
Unit
RL
Output Load
stereo mode
16
Ohm
RL= 32
Ω
20
mW
Pout
Maximum Output Power
RL= 16
Ω
40
mW
A0
Gain
programmable gain
-43.43
1.07
dB
Ax
Gain Step-Size
1.5
dB
PSRR
Power Supply Rejection Ratio 200Hz-20kHz, 720mVpp, RL= 16Ω
60
90
dB
Short Current Protection Level
145
mA
IOUT_pd
IOUT power down
-20
20
uA
Tpower_up
90
ms
SNR
Signal to Noise Ratio
90
dB
Mute Attenuation
120
dB
BVDD = 3.3V, TA= 25oC unless otherwise mentioned



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