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Электронный компонент: AS2522BF

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Revision 3.4
Page 1 of 19
austria
micro
systems
Key Features
-
Line/Speech circuit, DTMF dialer, FSK transmitter and
tone ringer on a 32-pin CMOS-IC
-
Enhanced voice switching
-
Background noise monitoring
-
DTMF tone generator
-
FSK Transmitter V.23, BELL202, V.21, BELL 103
-
Ringer tone programmable
-
Tx- and Rx-gain programmable
-
Digital volume control of Rx signals
-
DC characteristic programmable
-
Dual softclipping in handset mode
-
Tx-softclipping in handsfree mode
-
Common monitor amplifier for loudhearing, handsfree
and ringing
-
Supply voltage generation for external circuitry
-
Automatic line loss compensation (LLC)
-
Real and complex impedance selectable by external
components
-
Side tone adaptation selectable by external components
-
Unique EMC performance
-
Operating range from 15mA to 100mA (down to 5mA
with reduced performance)
-
Few external components
General Description
AS2522 is a CMOS integrated circuit that incorporates DC
and AC line adaptation (DC-mask and synthesized AC-
impedance of 100
0
) as well as a speech circuit with
softclipping, line loss compensation and Rx-volume control
for handset and handsfree operation. It shall act as an a/b-
line powered device, which is controlled by a CPU via a
serial interface. Furthermore the AS2522 incorporates a
DTMF, FSK transmitter, single tone and ringer tone
generator.
AS2522 allows to use an off-the-shelf microprocessor
without special blocks and functions for telephone
applications. DTMF, FSK transmitter, single tone and ringer
tone generator can be controlled via the serial interface as
well as the gain settings in handset and handsfree mode.
Applications
Enhanced handsfree feature phones with CallerID and
extended displays.
Package
Available in 32-pin TQFP
Block Diagram
Telephone Line Interface and
Speakerphone Circuit
AS2522B
DATA SHEET
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 2 of 19
Pin description
Pin #
Symbol
Function
13
LS
L
ine Current
S
ense Input
Analog input for sensing the line current
10
LI
L
ine
I
nput
Analog input used for power extraction and line current sensing
11
RI
R
eceive
I
nput
Analog input for ac-separated receive signal
7
STB
S
ide
T
one
B
alance Input
Analog input for side tone cancellation network
8
CS
C
urrent
S
hunt Control Output
N-channel open drain output to control the external high power shunt transistor for
synthesizing AC- and DC-impedance, modulation of line voltage and shorting the line during
make periods of pulse dialing
14
CI
C
omplex
I
mpedance Input
Analog input pin for the capacitor to program a complex impedance
12
SS
S
upply
S
ource Control Output
N-channel open drain output to control the external high power source transistor for supplying
(Vpp) the loudspeaker amplifier in off-hook loudspeaking/handsfree mode
9
VSS
V
oltage
S
ource
S
ource
Negative Analog Power Supply
18
VDD
V
oltage
D
rain
D
rain
Positive Analog Power Supply
19
AGND
A
nalog
G
round
Special ground for the internal amplifiers
6
M1
M
icrophone Input
1
Differential input for the handset microphone (electret)
4
M2
M
icrophone Input
2
Differential input for the handset microphone (electret)
5
M3
M
icrophone Input
3
Differential input for the handsfree microphone (electret)
3
M4
M
icrophone Input
4
Differential input for the handsfree microphone (electret)
17
RO
R
eceive
O
utput to
H
andset
Output for driving a dynamic earpiece with an impedance from 150
to 300
31
OSC
O
scillator Input
Input for ceramic resonator 3.58MHz.
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 3 of 19
Pin #
Symbol
Function
22
VPP
Loudspeaker Power Supply
High power supply for the output driver stage
21
CM
C
onverter
M
ake Output
This is an output for controlling the external switching converter. During ringing it converts the
ring signal into a 4V supply voltage
27
xCS
C
hip
S
elect
Chip select input of the serial interface. Internal pull-up resistor ( 100kOhm )
29
DI
D
ata
I
nput
Data input of the serial interface. Internal pull-up resistor ( 100kOhm )
30
CLK
Cl
oc
k
Clock input of the serial interface. Internal pull-up resistor ( 100kOhm )
28
DO
D
ata
O
utput
Data output of the serial interface. If xCS=1 DO is in HI-Z state
24
23
LO1
LO2
L
oudspeaker
O
utput
1 and 2
Output pins for a 50
loudspeaker
1
FT1
Analog input pin for connecting a capacitor for offset cancellation.
2
FT2
Analog input pin for connecting a capacitor for offset cancellation.
20
CBN
Analog input pin for connecting a capacitor for background noise monitoring.
15
RECI
Analog input for the handsfree receive path. Should be connected to RO via coupling
capacitor.
16
RECV
Analog input for receive voice switching path.
25
VSSA
Power supply pin for LS1-LS2 output amplifier.
32
VSSD
V
oltage
S
ource
S
ource
D
igital
Negative Digital Power Supply
26
VDDD
V
oltage
D
rain
D
rain
D
igital
Positive Digital Power Supply
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 4 of 19
Detailed Block Diagram
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 5 of 19
Functional Description
DC conditions
The normal operating mode is from 15mA to 100mA. An
operating mode with reduced performance is from 5mA to
15mA. In the line hold range from 0mA to 5mA the device
is in a power down mode.
The DC characteristic is determined by the voltage at LI-
pin and a 30
resistor between LI- and LS-pin. It can be
calculated by the following equation: V
LS
= V
LI
+ I
Line
*
30
. V
LI
can be programmed to be 3.5V or 4.5V.
2/4 wire conversion
AS2522 has a built-in dual Wheatstone bridge with one
common ground. This provides a maximum of
independence of AC-impedance and side tone from each
other. One can adapt side tone without changing the AC-
impedance.
AC-impedance
The AC-impedance of AS2522 is set to t.m. 1000
. With
the external capacitor at CI-pin it can be programmed
complex. With an external resistor of approx. 1.5k
connected to the LS-pin it can be programmed to 600
.
Side Tone
A good side tone cancellation can be achieved by using the
following equation:
Z
BAL
/Z
LINE
= 10
Transmit path
The gain of the M1/M2
LS is set to +37dB. This gain
can be changed by programming from +30dB to +45dB in
1dB steps (Register Txgain). The input is differential with
an impedance of 10k
. The soft clip circuit limits the
output voltage at LS to 2V
p.
There is LLC for this path.
The gain of the M3/M4
LS is set to +46dB.
This gain can be changed by programming from +39dB to
+54dB in 1dB steps. The input is differential with an
impedance of 10k
. The soft clip circuit limits the output
voltage at LS to 2V
p
. There is no LLC for this path.
Receive path
The gain of the LS
RO receive path is set to +1dB.
This gain can be changed by programming from -6dB to
+9dB in 1dB steps (Register Rxgain). The receive input is
the differential signal of RI and STB. The soft clip circuit
limits the output voltage at RO to 1V
p.
It prevents harsh
distortion and acoustic shock. There is LLC for this path.
The gain of the LS
LO1/LO2 receive path is set to
+29dB. This gain can be changed by programming from
+22dB to -37dB in 1dB steps. The user can also change
the gain via Register VOL (See section "Handsfree"). The
receive input is the differential signal of RI and STB. The
soft clip circuit limits the output voltage at LO1 of LO2 to
1V
p.
It prevents harsh distortion and acoustic shock. There
is optional LLC for this path.
Line Loss Compensation
The line loss compensation is programmable (Register
0x0C). When it is activated, the transmit and receive gains
for both I/O's are decreased by 6dB at line currents from
20mA to 50mA or from 45mA to 75mA.
Handsfree
The handsfree function allows voice communication without
using the handset (full 2-way speaker phone). Two voice
controlled attenuators prevent acoustic coupling between
the loudspeaker and the microphone. The voice switching
circuit has three states, namely idle, transmit or receive. In
receive mode the attenuation of the receive path and the
transmit path can be controlled by Register VOL between
0dB and -20dB. The following table shows how voice
switching is controlled
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 6 of 19
TX_atten
Backgnd
noise
monitor
Voice
switching
speech
RX
voice switching circuit
RO
RECI
+3dB
+14dB
Voice
switching
speech
Gmax = -4dB ... +16dB (VOL)
Gmin = -33dB
Offset
comp
Compress
Peak
detector
Cmicoffset
+23dB
CBckgnd
Offset
comp
Compress
Peak
detector
CTXoffset
Offset
comp
Compress
Peak
detector
LINE
Gmax = +9dB
Gmin = -21dB ... -40dB (VOL)
+12dB
RECV
FT2
FT1
CBN
+8dB
Speech
Mode
Rx-gain
Tx-gain
Remark
Rx > Tx_atten
X
Receive
0db to -20dB
-50dB to -30dB
adjustable with VOL-setting
Tx_atten > Rx
NO
Idle
-25
-25
middle position
Tx_atten > Rx
YES
Transmit
-50dB
0dB
independent of VOL-setting
-50dB
-25dB
0dB
TX-mode
RX-mode
IDLE-mode
Vol min
Vol default
Vol max
TX-gain
RX-gain
-10dB
-20dB
-40dB
-30dB
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 7 of 19
Serial Interface
Registers
The settings of the AS2522 are stored in 16 registers. Each
register has 4 bit data width. Writing data into the AS2522 also
causes the sending of the AS2522 status information on Pin D0.
This information consists of the DC-current information (from the
Line Loss Compensation circuit) and the status of the power-on
reset circuit to test if AS2522 has already powered up.
D7
D6
D5
D4
D3
D2
D1
D0
LLC5
LLC4
LLC3
LLC2
LLC1
LLC0 xPOR
POR
Power on reset information in Statusbits D1 and D0
D1
D0
0
0
0
1
AS2522 is in POR state
1
0
AS2522 is active
1
1
DC-current information in Statusbits D7 D2
D[7:2]
LLC-bit LO
LLC-bit HI
000000
<20mA
<45mA
000001
20-26mA
45-51mA
000011
26-32mA
51-57mA
000111
32-38mA
57-63mA
001111
38-44mA
63-69mA
011111
44-50mA
69-75mA
111111
>50mA
>75mA
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 8 of 19
Timing
The data format for writing to a register has the following form:
A3
A2
A1
A0
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
xCS
CLK
DI
DO
Note:
The pins xCS,CLK,DI have internal pull-up resistors.
Parameter
Symbol
MIN
TYP
MAX
CLK Pulse width HIGH
t6
100ns
CLK Pulse width LOW
t5
100ns
xCS to first falling CLK-
edge setup time
t1
50ns
CLK to DOUT delay
t2
50ns
DIN to CLK setup time
t3
50ns
DIN to CLK hold time
t4
50ns
t
1
xCS
CLK
DIN
DOUT
t
2
t
3
t
4
t
5
t
6
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 9 of 19
Serial interface Registers
The following table shows the content of the 16 control registers.
For a detailed description of the commands see Application note AN522.
Control registers AS2522A, AS2522B
Default value
after reset
A A A A D D D D
3 2 1 0 3 2 1 0
0 0 0 0 Nop
No operation. W rite to this location to get AS2522-Satus
inform ation without altering any other setting.
na
0 0 0 1 DTMFpair
Frequency select depending on Tone Generator mode
0000
DTMF-Generator mode:
Single tone mode AS2522B ONLY
AND FSK=1 (Addr 12):
f4
, c1
f3
, c0
f2
, r
1
f0
, r
0
HIGH Group
LOW-Group
Data
c1 c0
fHigh
r1 r0
fLow
f[3:0] Frequency
0
0
1209Hz
0
0
697Hz
0000
0Hz
0
1
1336Hz
0
1
770Hz
0001
800Hz
(ring)
1
0
1477Hz
1
0
852Hz
0010
1067Hz
(ring)
1
1
1633Hz
1
1
941Hz
0011
1333Hz
(ring)
0100
1300Hz
(V.23)
0101
2100Hz
(V.23)
0110
1200Hz
(Bell 202)
0111
2200Hz
(Bell 202)
1000
980Hz
(V.21)
1001
1180Hz
(V.21)
1010
1070Hz
(Bell 103)
1011
1270Hz
(Bell 103)
1100
1650Hz
(V.21)
1101
1850Hz
(V.21)
1110
2025Hz
(Bell 103)
1111
2225Hz
(Bell 103)
0 0 1 0 DTMFLevel
DTMF-Level 13 steps, 1dB stepsize
1100
Data
DTMF-level LOW GROUP at pin LS
0x0
-16dBm
:
:
0xC
-4dBm
0 0 1 1
x
x
x
x
DTMF-settings
0101
T
one
preem
ph
CT1
CT0
Tone:
DTMF-signal path
0...OFF,
1...ON
preemph: DTMF-preempahsis
0...2.2dB, 1...3.2dB
CT1 CT0: @RO
@LO1/LO2
0
0
-36dB
-15dB
DTMF-confidence level
0
1
-30dB
-9dB
rel. to pin LS
1
0
-24dB
-3dB
1
1
-18dB
+3dB
0 1 0 0
x
x
x
x
Single Tone frequencies if FSK=0 (Addr. 12) and RING/Beep Volum e [4]
0000
f
r
equ1
f
r
equ0
V1
V0
frequ1 frequ0
V1 V0:
RING volume
0
0
800Hz
0
0
-17.5dB
0
1
1067Hz
0
1
-11.5dB
1
0
1333Hz
1
0
-5.5dB
1
1
1333Hz
1
1
0dB
0 1 0 1
x
x
x
x
Tone Generator m ode, single tone path
0000
Bu
r
s
Bu
r
l
M1
M0
BURS: Analog tone at RO
0...OFF,
1...ON
BURL: Analog tone at LO1/LO2
0...OFF,
1...ON
M1 M0: Tone generator mode select
0
0
Tone generator OFF
0
1
DTMF generator mode
1
0
Single tone Analog mode
1
1
Single tone Digital mode ( RING )
0 1 1 0
x
x
x
x
Softclip-settings, Noise monitoring
0000
ring
B
non
So
ft-
R
X
So
ft-
T
X
RING:
RING-path
0...OFF,
1...ON
BNON:
Noise monitor
0...OFF,
1...ON
SOFTRX: Softclip RX
0...OFF,
1...ON
SOFTTX: Softclip TX
0...OFF,
1...ON
0 1 1 1
x
x
x
x
DC/DC-Converter ON/OFF,Mask
0000
l
dbr
l
dbl
Ma
s
k
DC/
DC
ldbr: Digital tone at RO
0...OFF,
1...ON
ldbl: Digital tone at LO1/LO2 0...OFF,
1...ON
MASK: Mask function
0...OFF,
1...ON
DC/DC: DC/DC-converter
0...OFF,
1...ON
Address
Data
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 10 of 19
Control registers AS2522A, AS2522B
Default value
after reset
A A A A D D D D
3 2 1 0 3 2 1 0
1 0 0 0 16 gains
Handsfree receive endgain
0111
Data
RXgain
TXgain
0x0
-20dB
-30dB
Min. receive volume
:
:
0xF
0dB
-50dB
Max. receive volume
1 0 0 1 x x
x x
Handsfree switching characteristic
1000
off1
off0
Hfs
1
Hfs
0
off1 off0: BGN-offset
0
0
120mV
0
1
180mV
1
0
240mV
1
1
300mV
Hfs1 HFs0: Speed of voice switching
0
0
max speed
0
1
1
0
1
1
min speed
1 0 1 0 16 gains
Transmit gain [16], 16 steps, 1dB stepsize
0111
Data
HS-mode
HF-mode
0x0
30dB
39dB
:
:
:
0xF
45dB
54dB
1 0 1 1 16 gains
Receive gain [16], 16 steps, 1dB stepsize
0111
Data
HS-mode
HF-mode
0x0
-6dB
22dB
:
:
:
0xF
+9dB
37dB
1 1 0 0 x x
x x
FSK-mode, LLC[2], LI-Voltage
0111
FS
K
Li
v
Ll
c
1
Ll
c
0
AS2522B:
FSK: Frequency select in single tone mode AS2522B ONLY
FSK:
0
Single Tone frequencies are read from Addr. 4:
frequ1, frequ0
1
Single Tone frequencies are read from Addr. 1:
f4,f3,f2,f1
AS2522A
FSK: For factory test only !
LIV: Voltage at pin LI
0...3.5V, 1...4.5V
LLC1 LLC0: Line loss compensation setting
0
0
20mA-50mA
0
1
NO Line loss compensation
1
0
45-75mA
1
1
NO Line loss compensation
1 1 0 1 x x
x x
Mute, Lh, Hf, Hook Switch
0000
Mute
Lh
Hf
Hi
s
Mute: Mute transmit
0...OFF,
1...ON
His Hf Lh
0
x
x
On Hook
1
0
0
Off Hook, Handset mode
1
1
0
Off Hook, Handfree mode
1
1
1
Off Hook, Loudhearing mode
1 1 1 0 x x
x x
Krat5,Test3,Test2,Test1: For factory test only !
0000
Kr
at
5
Te
s
t
3
Te
s
t
2
Te
s
t
1
1 1 1 1 x x
x x
Reset to defaults
na
Address
Data
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 11 of 19
Electrical characteristics
Electrical characteristics are measured with the Test Circuit
application. Typical mean values will not be tested.
Absolute maximum ratings
Positive Supply Voltage
-0.3V <= V
DD
<= 7V
Input Current
+/- 25mA
Input Voltage (LS)
-0.3V <= V
in
<= 12V
Input Voltage (LI, CS)
-0.3V <= V
in
<= 8V
Input Voltage (STB, RI)
-2V <= V
in
<= V
DD
+0.3V
Digital Input Voltage
-0.3V <= V
in
<= V
DD
+0.3V
Electrostatic Discharge (HBM 1.5k
-100pF)
+/- 1000V
Storage Temperature
-65C to +125C
Recommended operating conditions
Supply Voltage (generated internally)
3V <= V
DD
<= 5V
Operating Temperature
-25C to +70C
DC characteristics
I
Line
=15mA w/o operation of any additional external
circuitry, unless other specified
Symbol
Parameter
Conditions
Min
Type
Max
Units
Test
I
DDS
Operating Current
Speech Mode
3
6
mA
Y
I
DDH
Operating Current
Handsfree Mode
7
10
mA
Y
V
LI
Line Voltage LIVolt=0
Line Voltage LIVolt=1
15mA<=ILINE<=100mA
3.2
4.2
3.5
4.5
3.8
4.8
V
V
Y
Y
I
OL
Output Current, Sink
CS,SS
VOL=0.4V
1
mA
N
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 12 of 19
Transmit characteristics
I
Line
=15mA f=800Hz, default settings unless other specified
Symbol
Parameter
Conditions
Min
Type
Max
Units
Test
A
M1/2TX
Transmit Gain
M1/M2
LS
Z
AC(syn)=
1000
35
+36.5
38
dB
Y
A
M3/4TX
Transmit Gain
M3/M4
LS
Z
AC(syn)
=1000
43
+45.0
47
dB
Y
A
TX
Variation with frequency
f = 500Hz ... 3.4kHz
0.8
dB
N
A
VRM12
Control range
M1/M2
LS
16 steps
-7/+8
dBr
N
A
VRM34
Control range
M2/M4
LS
16 steps
-7/+8
dBr
N
THD
Distortion
V
LS
=0.25VRMS
2
%
Y
V
AGC1
Soft Clip Level
M1/M2
LS at LS
2
VP
N
V
AGC2
Soft Clip Level
M3/M4
LS at LS
2
VP
N
A
SCO
Soft Clip Overdrive
M1/M2 - M3/M4
20
dB
N
t
attack
Attack time
70
us/6dB
N
t
decay
Decay time
100
ms/6dB
N
Z
IN-M1/2
Input Impedance
M1/M2
10
k
N
Z
IN-M3/4
Input Impedance
M3/M4
10
k
N
V
INmax
Input Voltage Range
M1/2 - M3/4
differential
1
Vp
N
V
NO
Noise Output Voltage
LS
T
AMP
=25C
Handset mode
Gain = 36.5dB
-72
dBmp
Y
A
MUTE
Mute Attenuation
Mute activated
60
dB
Y
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 13 of 19
Receive characteristics
I
Line
=15mA f=800Hz, default settings unless other specified
Symbol
Parameter
Conditions
Min
Type
Max
Units
Test
A
RO
Receive Gain
LS
RO
Z
AC(syn)
=1000
Vol default
-2
-0.5
1
dB
Y
A
LO12
Receive Gain
LS
LO1/LO2
Z
AC(syn)
=1000
Vol maximum
+28
+29.0
+31
dB
Y
A
RX
Variation with frequency
f=500Hz to 3.4kHz
0.8
dB
N
A
VRRO
Control range
LS
RO
16 steps
-7/+8
dBr
N
A
VRLS
Control range
LS
LS1/LS2
16 steps
-7/+8
dBr
N
THD
LS
Distortion LS1/LS2
V
LS
=0.25VRMS
5
%
Y
THD
RO
Distortion RO
V
LS
=0.25VRMS
2
%
Y
V
UFC
Unwanted Freq. Cmp.
f = 200 ... 20kHz
-60
dBm
Y
V
AGCRO
Soft Clip Level
RO
1
VP
N
V
AGCLS
Soft Clip Level
LS1/2
2
VP
N
A
SCLS
Soft Clip Overdrive
LS1/2
10
dB
N
t
attack
Attack time
70
us/6dB
N
t
decay
Decay time
100
ms/6dB
N
V
NO
Noise Output Voltage
RO
T
AMP
=25C
Gain = 3dB
-72
dBmp
Y
Z
IN-RI
V
INmax
Input Imp. RI
Input Voltage Range RI
8
2
k
Vp
N
Z
IN-STB
V
INmax
Input Imp. STB
Input Volt. Range STB
80
2
k
Vp
N
ST
Side tone
V
RI
<=0.25VRMS
26
dB
Y
RL
Z
AC/C
Return Loss
Temp. Variation
Z
AC(syn)
=1000
18
0.5
dB
/C
Y
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 14 of 19
DTMF characteristics
I
Line
=15mA w/o operation of any additional external circuitry, unless other specified, default settings
Symbol
Parameter
Conditions
Min
Type
Max
Units
Test
V
MFlow
Tone level low group
at LS
Default
-7
-6
-5
dBm
Y
MF
range
DTMF level range
low group at LS
13 steps
Prg. in Service mode
-18/-6
dBm
N
V
L-H
Preemphasis L-H
Preemphasis=1
2.7
3.2
3.7
dB
Y
UFC
Unwanted frequency
components
300 Hz - 4.3kHz
4.3kHz - 7kHz
7kHz - 10kHz
10kHz - 14kHz
14kHz - 28.5kHz
28.5kHz - 40kHz
-40
-46
-52
-58
-70
-80
dBm
dBm
dBm
dBm
dBm
dBm
Y
Y
Y
Y
Y
Y
f
Frequency deviation
1.2
%
Y
V
CT-H
Comfort tone handset
Rel to LS
programmable in
service mode
-36
-30
-24
-18
dBr
dBr
dBr
dBr
N
N
N
N
V
CT-L
Comfort tone
Loudspeaker
Rel to LS
programmable in
service mode
-15
-9
-3
+3
dBr
dBr
dBr
dBr
N
N
N
N
Ringer
Symbol
Parameter
Conditions
Min
Type
Max
Units
Test
F0
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
F13
F14
F15
Frequency 0
Frequency 1
Frequency 2
Frequency 3
Frequency 4
Frequency 5
Frequency 6
Frequency 7
Frequency 8
Frequency 9
Frequency 10
Frequency 11
Frequency 12
Frequency 13
Frequency 14
Frequency 15
770
1025
1280
0
800
1067
1333
1300
2100
1200
2200
980
1180
1070
1270
1650
1850
2025
2225
830
1110
1385
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
N
Y
Y
Y
N
N
N
N
N
N
N
N
N
N
N
N
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 15 of 19
Miscellaneous
Symbol
Parameter
Conditions
Min
Type
Max
Units
Test
V
PARO
Pacifier level at RO
RL = 150 Ohm
30
mV
pp
N
V
PALS
Pacifier level at LS1/2
RL = 50 Ohm
100
mV
pp
N
Test circuit
1uF
15nF
10k
5V1
10uF
Iline
15nF
50
100nF
1uF
BC327
15nF
15nF
100uF
10uF
Vac
10uF
22uF
3.58MHz Resonator
470uF
600
BC327
10k
1uF
10V
150
100nF
AS2522A
13
11
10
7
8
32
9
12
22
25
21
18
26
19
1
2
20
31
30
29
28
27
24
23
16
15
17
4
6
3
5
14
LS
RI
LI
STB
CS
VSSD
VSS
SS
VPP
VSSA
CM
VDD
VDDD
AGND
FT1
FT2
CBN
OSC
CLK
DI
DO
xCS
LO1
LO2
RECV
RECI
RO
M2
M1
M4
M3
CI
6k
100uF
30
300
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 16 of 19
Typical application
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 17 of 19
Bonding Diagram
32 Lead 7x7mm TQFP dimensions
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 18 of 19
Packaging
32-pin plastic TQFP (suffix Q)
For exact mechanical package dimensions please see
austriamicrosystems
AG
packaging information.
Pin-out, Marking
YYWWAAA
AS2522X
FT1 1
FT2 2
M4 3
M2 4
M3 5
M1 6
STB 7
CS 8
VS
S

9
LI
10
RI
11
SS
1
2
LS
13
CI
14
RE
CI

15
RE
CV

16
24 LO1
23 LO2
22 VPP
21 CM
20 CBN
19 AGND
18 VDD
17 RO
32 V
S
S
D
31 OS
C
30 CLK
29 DI
28 DO
27 x
C
S
26 V
DDD
2
5
VS
SA
YY
year of production
WW
calendar week of production
AAA
austriamicrosystems
AG
assembly ID
X
revision
Ordering Information
Number
Package
Description
AS2522B Q
TQFP
plastic thin quad flat package
32 leads (suffix T)
AS2522B F
DOF
Dice-on-Foil
Devices sold by austriamicrosystems AG are covered by
the warranty and patent identification provisions appearing
in its Term of Sale. austriamicrosystems AG makes no
warranty, express, statutory, implied, or by description
regarding the information set forth herein or regarding the
freedom of the described devices from patent infringement.
austriamicrosystems AG reserves the right to change
specifications and prices at any time and without notice.
Therefore, prior to designing this product into a system, it
is necessary to check with austriamicrosystems AG for
current information. This product is intended for use in
normal commercial applications. Applications requiring
extended temperature range, unusual environmental
requirements, or high reliability applications, such as
military, medical life-support or life-sustaining equipment
are specifically not recommended without additional
processing by austriamicrosystems AG for each
application.
Copyright
Copyright 1997-2002, austriamicrosystems AG, Schloss
Premstaetten, 8141 Unterpremstaetten, Austria-Europe.
Trademarks Registered . All rights reserved. The material
herein may not be reproduced, adapted, merged,
translated, stored, or used without the prior written consent
of the copyright owner.
The information furnished here by austriamicrosystems AG
is believed to be correct and accurate. However,
austriamicrosystems AG shall not be liable to recipient or
any third party for any damages, including but not limited
to personal injury, property damage, loss of profits, loss of
use, interruption of business or indirect, special, incidental
or consequential damages, of any kind, in connection with
or arising out of the furnishing, performance or use of the
technical data herein. No obligation or liability to recipient
or any third party shall arise or flow out of
austriamicrosystems AG rendering of technical or other
services.
Data Sheet AS2522B
austria
micro
systems
Revision 3.4
Page 19 of 19
Contact
Headquarters
austriamicrosystems AG
Communications Business Unit
A 8141 Schloss Premsttten, Austria
T. +43 (0) 3136 500 0
F. +43 (0) 3136 525 01
www.austriamicrosystems.com
Sales Offices
Germany
austriamicrosystems Germany GmbH
Tegernseer Landstrasse 85
D-81539 Mnchen, Germany
Phone: +49/89/693643-0
Fax: +49/89/693643-66
France
austriamicrosystems France S.a.r.l.
124, Avenue de Paris
F-94300 Vincennes, France
Phone: +33/1/43 74 00 90
Fax: +33/1/43 74 20 98
Italy
austriamicrosystems Italy S.r.l.
Via Leone Tolstoi, 64
I-20146 Milano, Italy
Phone: +39/0242/36713
Fax: +39/0242/290889
Switzerland
austriamicrosystems Switzerland AG
Rietstrasse 4
CH-8640 Rapperswil, Switzerland
Phone: +41/55/220 9000
Fax: +41/55/220 9001
USA (west)
austriamicrosystems USA, Inc.
Suite 116, 4030 Moorpark Ave,
San Jose, CA 95117, USA
Phone: +1/408/345 1790
Fax: +1/408/345 1795
USA (east)
austriamicrosystems USA, Inc.
Suite 400, 8601 Six Forks Road
Raleigh, NC 27615, USA
Phone: +1/919/676 5292
Fax: +1/919/676 5305
United Kingdom
austriamicrosystems UK, Ltd.
Coliseum Business Centre, Watchmoor Park
Camberley, Surrey, GU15 3YL, UK
Phone: +44/1276/23 3 99
Fax: +44/1276/29 3 53
Japan
austriamicrosystems AG
Shin Yokohama Daini, Center Bldg. 10F
3-19-5, Shin Yokohama
Kohoku-ku, Yokohama 222-0033, Japan
Phone: +81/45/474 0962
Fax: +81/45/472 9845
Distributors & Representatives
austriamicrosystems AG is represented by distributors in
the following countries. Please contact your nearest
regional sales office for the distributor address:
Spain, Israel, Korea, Hong-Kong, Taiwan, Malaysia,
Singapore, India, Brazil
Application Support
Please contact your local sales office or your distributor.