Revision 3.1 Page 1 of 19
austriamicrosystems
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
(AS2522B only)
- 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 1000Ω) 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 (AS2522B only), 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 (AS2522B only), 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
AS2522A, AS2522B DATA SHEET
Data Sheet AS2522A, AS2522B austriamicrosystems
Revision 3.1 Page 2 of 19
Pin description
Pin # Symbol Function
13 LS Line Current Sense Input
Analog input for sensing the line current
10 LI Line Input
Analog input used for power extraction and line current sensing
11 RI Receive Input
Analog input for ac-separated receive signal
7STB
Side Tone Balance Input
Analog input for side tone cancellation network
8CS
Current Shunt 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 Complex Impedance Input
Analog input pin for the capacitor to program a complex impedance
12 SS Supply Source 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 Voltage Source Source
Negative Analog Power Supply
18 VDD Voltage Drain Drain
Positive Analog Power Supply
19 AGND Analog Ground
Special ground for the internal amplifiers
6M1
Microphone Input 1
Differential input for the handset microphone (electret)
4M2
Microphone Input 2
Differential input for the handset microphone (electret)
5M3
Microphone Input 3
Differential input for the handsfree microphone (electret)
3M4
Microphone Input 4
Differential input for the handsfree microphone (electret)
17 RO Receive Output to Handset
Output for driving a dynamic earpiece with an impedance from 150Ω to 300Ω
31 OSC Oscillator Input
Input for ceramic resonator 3.58MHz.
Data Sheet AS2522A, AS2522B austriamicrosystems
Revision 3.1 Page 3 of 19
Pin # Symbol Function
22 VPP Loudspeaker Power Supply
High power supply for the output driver stage
21 CM Converter Make 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 Chip Select
Chip select input of the serial interface. Internal pull-up resistor ( 100kOhm )
29 DI Data Input
Data input of the serial interface. Internal pull-up resistor ( 100kOhm )
30 CLK Clock
Clock input of the serial interface. Internal pull-up resistor ( 100kOhm )
28 DO Data Output
Data output of the serial interface. If xCS=1 DO is in HI-Z state
24
23
LO1
LO2
Loudspeaker Output 1 and 2
Output pins for a 50Ω 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 Voltage Source Source Digital
Negative Digital Power Supply
26 VDDD Voltage Drain Drain Digital
Positive Digital Power Supply
Data Sheet AS2522A, AS2522B austriamicrosystems
Revision 3.1 Page 4 of 19
Detailed Block Diagram
Data Sheet AS2522A, AS2522B austriamicrosystems
Revision 3.1 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 30Ω resistor between LI- and LS-pin. It can be
calculated by the following equation: VLS = VLI + ILine *
30Ω. VLI 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. 1000Ω. With
the external capacitor at CI-pin it can be programmed
complex. With an external resistor of approx. 1.5kΩ
connected to the LS-pin it can be programmed to 600Ω.
Side Tone
A good side tone cancellation can be achieved by using the
following equation:
ZBAL/ZLINE = 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 10kΩ. The soft clip circuit limits the
output voltage at LS to 2Vp. 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 10kΩ. The soft clip circuit limits the output
voltage at LS to 2Vp. 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 1Vp. 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
1Vp. 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 AS2522A, AS2522B austriamicrosystems
Revision 3.1 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
CompressPeak
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-modeRX-mode
IDLE-mode
Vol minVol defaultVol max
TX-gain
RX-gain
-10dB
-20dB
-40dB
-30dB
Data Sheet AS2522A, AS2522B austriamicrosystems
Revision 3.1 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
00
0 1 AS2522 is in POR state
1 0 AS2522 is active
11
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 AS2522A, AS2522B austriamicrosystems
Revision 3.1 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
CL
K
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
t1
xCS
CL
K
DIN
DOUT
t2t3t4
t5t6
Data Sheet AS2522A, AS2522B austriamicrosystems
Revision 3.1 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
AAAADDDD
32103210
0000Nop No operation. Write to this location to get AS2522-Satus
information without altering any other setting.
na
0001DTMFpair 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, r1
f0, r0
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)
0010DTMFLevel DTMF-Level 13 steps, 1dB stepsize 1100
Data DTMF-level LOW GROUP at pin LS
0x0 -16dBm
::
0xC -4dBm
0011xxxx DTMF-settings 0101
Tone
preemph
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
0100xxxx Single Tone frequencies if FSK=0 (Addr. 12) and RING/Beep Volume [4] 0000
frequ1
frequ0
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
0101xxxx Tone Generator mode, single tone path 0000
Burs
Burl
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 )
0110xxxx Softclip-settings, Noise monitoring 0000
ring
Bnon
Soft-RX
Soft-TX
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
0111xxxx DC/DC-Converter ON/OFF,Mask 0000
ldbr
ldbl
Mask
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 AS2522A, AS2522B austriamicrosystems
Revision 3.1 Page 10 of 19
Control registers AS2522A, AS2522B Default value
after reset
AAAADDDD
32103210
100016 gains Handsfree receive endgain 0111
Data RXgain TXgain
0x0 -20dB -30dB Min. receive volume
::
0xF 0dB -50dB Max. receive volume
1001xxxx Handsfree switching characteristic 1000
off1
off0
Hfs1
Hfs0
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
01
10
1 1 min speed
101016 gains Transmit gain [16], 16 steps, 1dB stepsize 0111
Data HS-mode HF-mode
0x0 30dB 39dB
:::
0xF 45dB 54dB
101116 gains Receive gain [16], 16 steps, 1dB stepsize 0111
Data HS-mode HF-mode
0x0 -6dB 22dB
:::
0xF +9dB 37dB
1100xxxx FSK-mode, LLC[2], LI-Voltage 0111
FSK
Liv
Llc1
Llc0
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
1101xxxx Mute, Lh, Hf, Hook Switch 0000
Mute
Lh
Hf
His
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
1110xxxx Krat5,Test3,Test2,Test1: For factory test only ! 0000
Krat5
Test3
Test2
Test1
1111xxxx Reset to defaults na
Address Data
Data Sheet AS2522A, AS2522B austriamicrosystems
Revision 3.1 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 <= VDD <= 7V
Input Current +/- 25mA
Input Voltage (LS) -0.3V <= Vin <= 12V
Input Voltage (LI, CS) -0.3V <= Vin <= 8V
Input Voltage (STB, RI) -2V <= Vin <= VDD+0.3V
Digital Input Voltage -0.3V <= Vin <= VDD+0.3V
Electrostatic Discharge (HBM 1.5kΩ-100pF) +/- 1000V
Storage Temperature -65°C to +125°C
Recommended operating conditions
Supply Voltage (generated internally) 3V <= VDD <= 5V
Operating Temperature -25°C to +70°C
DC characteristics
ILine=15mA w/o operation of any additional external
circuitry, unless other specified
Symbol Parameter Conditions Min Type Max Units Test
IDDS Operating Current Speech Mode 3 6 mA Y
IDDH Operating Current Handsfree Mode 7 10 mA Y
VLI 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
IOL Output Current, Sink
CS,SS VOL=0.4V 1 mA N
Data Sheet AS2522A, AS2522B austriamicrosystems
Revision 3.1 Page 12 of 19
Transmit characteristics
ILine=15mA f=800Hz, default settings unless other specified
Symbol Parameter Conditions Min Type Max Units Test
AM1/2TX Transmit Gain
M1/M2 → LS
ZAC(syn)=1000Ω35 +36.5 38 dB Y
AM3/4TX Transmit Gain
M3/M4 → LS
ZAC(syn)=1000Ω43 +45.0 47 dB Y
∆ATX Variation with frequency f = 500Hz … 3.4kHz ±0.8 dB N
AVRM12 Control range
M1/M2 → LS
16 steps -7/+8 dBr N
AVRM34 Control range
M2/M4 → LS
16 steps -7/+8 dBr N
THD Distortion VLS=0.25VRMS 2%Y
VAGC1 Soft Clip Level
M1/M2 → LS at LS
2VPN
VAGC2 Soft Clip Level
M3/M4 → LS at LS
2VPN
ASCO Soft Clip Overdrive
M1/M2 - M3/M4
20 dB N
tattack Attack time 70 us/6dB N
tdecay Decay time 100 ms/6dB N
ZIN-M1/2 Input Impedance
M1/M2
10 kΩN
ZIN-M3/4 Input Impedance
M3/M4
10 kΩN
VINmax Input Voltage Range
M1/2 - M3/4
differential ±1 Vp N
VNO Noise Output Voltage
LS
TAMP=25°C
Handset mode
Gain = 36.5dB
-72 dBmp Y
AMUTE Mute Attenuation Mute activated 60 dB Y
Data Sheet AS2522A, AS2522B austriamicrosystems
Revision 3.1 Page 13 of 19
Receive characteristics
ILine=15mA f=800Hz, default settings unless other specified
Symbol Parameter Conditions Min Type Max Units Test
ARO Receive Gain
LS → RO
ZAC(syn)=1000Ω
Vol default
-2 -0.5 1 dB Y
ALO12 Receive Gain
LS → LO1/LO2
ZAC(syn)=1000Ω
Vol maximum
+28 +29.0 +31 dB Y
∆ARX Variation with frequency f=500Hz to 3.4kHz ±0.8 dB N
AVRRO Control range
LS → RO
16 steps -7/+8 dBr N
AVRLS Control range
LS → LS1/LS2
16 steps -7/+8 dBr N
THDLS Distortion LS1/LS2 VLS=0.25VRMS 5%Y
THDRO Distortion RO VLS =0.25VRMS 2%Y
VUFC Unwanted Freq. Cmp. f = 200 … 20kHz -60 dBm Y
VAGCRO Soft Clip Level
RO
1VPN
VAGCLS Soft Clip Level
LS1/2
2VPN
ASCLS Soft Clip Overdrive
LS1/2
10 dB N
tattack Attack time 70 us/6dB N
tdecay Decay time 100 ms/6dB N
VNO Noise Output Voltage
RO
TAMP=25°C
Gain = 3dB
-72 dBmp Y
ZIN-RI
VINmax
Input Imp. RI
Input Voltage Range RI
8
±2
kΩ
Vp
N
ZIN-STB
VINmax
Input Imp. STB
Input Volt. Range STB
80
±2
kΩ
Vp
N
ST Side tone VRI<=0.25VRMS 26 dB Y
RL
∆ZAC/°C
Return Loss
Temp. Variation
ZAC(syn)=1000Ω18 0.5 dB
Ω/°C
Y
Data Sheet AS2522A, AS2522B austriamicrosystems
Revision 3.1 Page 14 of 19
DTMF characteristics
ILine=15mA w/o operation of any additional external circuitry, unless other specified, default settings
Symbol Parameter Conditions Min Type Max Units Test
VMFlow Tone level low group
at LS
Default -7-6-5dBmY
MFrange DTMF level range
low group at LS
13 steps
Prg. in Service mode
-18/-6 dBm N
∆VL-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
∆fFrequency deviation 1.2 % Y
VCT-H Comfort tone handset Rel to LS
programmable in
service mode
-36
-30
-24
-18
dBr
dBr
dBr
dBr
N
N
N
N
VCT-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
AS2522B only
AS2522B only
AS2522B only
AS2522B only
AS2522B only
AS2522B only
AS2522B only
AS2522B only
AS2522B only
AS2522B only
AS2522B only
AS2522B only
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 AS2522A, AS2522B austriamicrosystems
Revision 3.1 Page 15 of 19
Miscellaneous
Symbol Parameter Conditions Min Type Max Units Test
VPARO Pacifier level at RO RL = 150 Ohm 30 mVpp N
VPALS Pacifier level at LS1/2 RL = 50 Ohm 100 mVpp 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 AS2522A, AS2522B austriamicrosystems
Revision 3.1 Page 16 of 19
Typical application
Data Sheet AS2522A, AS2522B austriamicrosystems
Revision 3.1 Page 17 of 19
Bonding Diagram
32 Lead 7x7mm TQFP dimensions
Data Sheet AS2522A, AS2522B austriamicrosystems
Revision 3.1 Page 18 of 19
Packaging
32-pin plastic TQFP (suffix Q)
For exact mechanical package dimensions please see
austriamicrosystemsAG packaging information.
Pin-out, Marking
YYWWAAA
A
S2522X
A
ustria
FT1 1
FT2 2
M4 3
M2 4
M3 5
M1 6
STB 7
CS 8
VSS 9
LI 10
RI 11
SS 12
LS 13
CI 14
RECI 15
RECV 16
24 LO1
23 LO2
22 VPP
21 CM
20 CBN
19 AGND
18 VDD
17 RO
32 VSSD
31 OSC
30 CLK
29 DI
28 DO
27 xCS
26 VDDD
25 VSSA
YY year of production
WW calendar week of production
AAA austriamicrosystemsAG assembly ID
XA or B revision
Ordering Information
Number Package Description
AS2522 Q TQFP plastic thin quad flat package –
32 leads (suffix T)
AS2522 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 AS2522A, AS2522B austriamicrosystems
Revision 3.1 Page 19 of 19
Contact
Headquarters
austriamicrosystems AG
Communications Business Unit
A 8141 Schloss Premstätten, 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 München, 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.
