austriamicrosystems AG
is now
ams AG
The technical content of this austriamicrosystems datasheet is still valid.
Contact information:
Headquarters:
ams AG
Tobelbaderstrasse 30
8141 Unterpremstaetten, Austria
Tel: +43 (0) 3136 500 0
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Revision 3.4 Page 1 of 19
austriamicrosystems
Key Feature s
- Line/Spe ech circui t, DTMF dial er, FSK tr ansmitter and
tone ringer on a 32-pin CMOS-IC
- Enhanced voice switchi ng
- Background noise monitoring
- DTMF to ne generat or
- FSK Transmi tter V.23, BELL 202, V.21, BE LL 103
- Ringer tone programmabl e
- Tx- and Rx-g ain programmable
- Digital v olume contr ol of Rx s ignals
- DC cha racteristi c progra mmable
- Dual softc lipping i n handset mode
- Tx-softcl ipping i n handsfree mode
- Common m onitor ampl ifier fo r loudhea ring, hands free
and ringing
- Supply v oltage gen eration for external circuitry
- Automatic l ine loss c ompensation (LLC)
- Real an d complex i mpedance selec table by external
components
- Side tone adaptatio n selectabl e by extern al componen ts
- Unique E MC perf ormance
- Operating range from 15mA to 100mA (down to 5mA
with reduced performance)
- Few ex ternal comp onents
General Des cription
AS2522 is a CMOS integ rated circui t that inco rporates DC
and AC lin e adaptati on (DC-mask and synthesi zed AC-
impedance of 1000Ω) as w ell as a speech ci rcuit with
softclippi ng, line l oss compensa tion and Rx-volume control
for handse t and han dsfree operati on. It shal l act as an a /b-
line po wered dev ice, which is contr olled by a CPU via a
serial in terface. F urthermo re the AS252 2 incorporat es a
DTMF, FSK transmitter, si ngle tone a nd ringer tone
generator.
AS2522 allows to use an off-the-shelf microprocessor
without special blocks and functions for telephone
applicati ons. DTMF, F SK transmi tter, singl e tone and ringer
tone gene rator can be control led via the s erial inte rface as
well as the gain se ttings in han dset and h andsfree mod e.
Applications
Enhanced handsfre e feature p hones with CallerID a nd
extended displays.
Package
Available i n 32-pin TQF P
Block Diag ram
Telephone Line Interface and
Speakerphone Circuit
AS2522B DATA SH EET
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Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 2 of 19
Pin description
Pin # Symbol Function
13 LS Line Curre nt Sense Input
Analog inp ut for se nsing the li ne current
10 LI Line Input
Analog inp ut used fo r power ext raction and line curre nt sensing
11 RI Receive Input
Analog inp ut for ac -separated receive si gnal
7STB
Side Tone Bal ance Input
Analog inp ut for side tone cancel lation net work
8CS
Current Shunt Control Output
N-chan nel open drai n output t o control t he extern al high pow er shunt tra nsistor for
synthesiz ing AC- an d DC-impeda nce, modula tion of lin e voltage a nd shorting the line du ring
make periods of pulse dialing
14 CI Complex Impedance In put
Analog inp ut pin for the capacitor to prog ram a compl ex impedance
12 SS Supply So urce Control Output
N-chan nel open drai n output t o control t he extern al high pow er source tr ansistor fo r supplying
(Vpp) th e loudspe aker ampli fier in of f-hook l oudspeaking/ handsfree mode
9 VSS Voltage Sou rce Source
Negative Analog Power Supply
18 VDD Voltage Drai n Drain
Positive A nalog Powe r Supply
19 AGND Analog Ground
Special ground for the inter nal amplifie rs
6M1
Micropho ne Input 1
Differe ntial input for the ha ndset mic rophone (el ectret)
4M2
Micropho ne Input 2
Differe ntial input for the ha ndset mic rophone (el ectret)
5M3
Micropho ne Input 3
Differe ntial input for the ha ndsfree mi crophone (electret )
3M4
Micropho ne Input 4
Differe ntial input for the ha ndsfree mi crophone (electret )
17 RO Receive Output to Handset
Output f or driving a dynamic ea rpiece wit h an impedanc e from 1 50Ω to 300Ω
31 OSC Oscillator Input
Input f or ceramic resonato r 3.58MHz.
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Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 3 of 19
Pin # Symbol Function
22 VPP Loudspe aker Power S upply
High po wer supply for the o utput drive r stage
21 CM Convert er Make Outpu t
This is an output for controlling the external switching converter. During ri nging it converts the
ring si gnal into a 4V supply vol tage
27 xCS Chip Select
Chip sel ect input o f the serial interfac e. Internal p ull-up resi stor ( 100k Ohm )
29 DI Data Input
Data inp ut of the seri al inter face. Internal pull-up resistor ( 1 00kOhm )
30 CLK Clock
Clock inp ut of the s erial int erface. Inte rnal pull -up resisto r ( 100kOhm )
28 DO Data Output
Data o utput of the s erial inte rface. If x CS=1 DO is in HI-Z stat e
24
23 LO1
LO2 Loudspeake r Output 1 and 2
Output pi ns for a 50Ω l oudspeaker
1 FT1 Analog input pin for con necting a cap acitor for offset cancel lation.
2 FT2 Analog input pin for con necting a cap acitor for offset cancel lation.
20 CBN Analog i nput pin for connectin g a capacito r for back ground nois e monitori ng.
15 RECI Analog inp ut for the h andsfree receive pat h. Should b e connected to RO via cou pling
capacitor.
16 RECV Analog input for receive voice switching path.
25 VSSA Power s upply pin fo r LS1-LS2 ou tput amplifi er.
32 VSSD Vol tage Source Source Digital
Negativ e Digital Power Suppl y
26 VDDD Voltage Drain Drain Digital
Positive Digital Power Supply
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Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 4 of 19
Detailed Block Diagram
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Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 5 of 19
Functional Description
DC conditions
The nor mal operating mode is fro m 15mA to 10 0mA. An
operating mode with reduce d performance is from 5mA to
15mA. I n the line h old range fr om 0mA to 5mA the devi ce
is in a power down mode.
The DC ch aracteristi c is det ermined by the voltage at LI-
pin and a 30Ω resisto r between L I- and LS-pi n. It ca n be
calculate d by the foll owing equati on: VLS = VLI + ILine *
30Ω. VLI can be pr ogrammed t o be 3.5V or 4.5V.
2/4 wire conversion
AS2522 has a built-i n dual Wheats tone brid ge with one
common ground. This provides a maximum of
independ ence of AC-i mpedance an d side tone from eac h
other. One can adapt side tone wi thout chan ging the A C-
impedance.
AC-impedance
The AC-i mpedance of AS2522 is s et to t.m. 1000Ω. With
the exte rnal capac itor at CI-pin it can be progra mmed
complex. With an ext ernal resis tor of app rox. 1.5kΩ
connected to the LS -pin it can be program med to 600Ω.
Side Tone
A good sid e tone canc ellation can be achiev ed by using the
following equation:
ZBAL/ZLINE = 10
Transmit path
The gai n of the M1/ M2 → LS is set to + 37dB. This gai n
can be ch anged by pro gramming fr om +30dB to +4 5dB in
1dB steps (Register Txgain). T he input is differenti al with
an imped ance of 10kΩ. The soft clip circuit limits the
output v oltage at LS to 2Vp. There is LLC for thi s path.
The gai n of the M3/ M4 → LS is set to + 46dB.
This gai n can be chan ged by pr ogramming f rom +39dB to
+54dB in 1dB steps. T he input is di fferential with an
impedance of 10kΩ. The s oft clip ci rcuit limits the output
voltage at LS to 2Vp. T here is no L LC for thi s path.
Receive path
The gain o f the LS → RO receive p ath is set to +1d B.
This gai n can be c hanged by pr ogramming f rom -6dB to
+9dB in 1 dB steps (R egister Rxgain). The receive inpu t is
the diffe rential sig nal of RI and STB. The so ft clip ci rcuit
limits the output voltage at RO to 1V p. It p revents ha rsh
distorti on and acous tic shock. T here is LLC for this p ath.
The gain o f the LS → LO1/LO2 receiv e path is se t to
+29dB. Thi s gain can be changed by program ming from
+22dB to -37dB in 1dB s teps. The use r can also c hange
the gain via Regist er VOL (See s ection "Hands free"). Th e
receive input is the differenti al signal of RI and STB. T he
soft clip c ircuit limi ts the outp ut voltage at LO1 of LO 2 to
1Vp. It preve nts harsh dist ortion and ac oustic s hock. There
is optio nal LLC for t his path.
Line Loss Compensation
The line l oss compens ation is pro grammable (Re gister
0x0C). When it is ac tivated, th e transmit and receive gai ns
for both I /O’s are dec reased by 6 dB at line c urrents f rom
20mA to 50mA or from 45mA to 75mA .
Handsfree
The handsf ree functi on allows v oice comm unication without
using t he handset ( full 2-way s peaker ph one). Two v oice
control led attenuat ors preve nt acoustic c oupling between
the louds peaker an d the micropho ne. The voi ce switchin g
circuit h as three s tates, nam ely idle, tr ansmit or receive. In
receive mode the at tenuation of t he receiv e path and t he
transmi t path can b e control led by Re gister VOL between
0dB and - 20dB. The foll owing t able shows h ow voice
switching is controlled
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Data Sheet AS2522B austriamicrosystems
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
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 T ransmit -50dB 0dB independ ent of VOL-set ting
-50dB
-25dB
0dB TX-modeRX-mode
IDLE-mode
Vol minVol defaultVol max
TX-gain
RX-gain
-10dB
-20dB
-40dB
-30dB
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Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 7 of 19
Serial Interface
Registers
The sett ings of the AS2 522 are s tored in 16 registers. E ach
register has 4 bit d ata width. Writing dat a into the AS2522 also
causes t he sending of the AS2522 status info rmation on Pin D0.
This informa tion consists of the DC-c urrent information (from the
Line Loss Compensati on circui t) and the s tatus of th e power-o n
reset ci rcuit to tes t if AS2522 has already powere d 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-cu rrent infor mation in Sta tusbits 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
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Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 8 of 19
Timing
The data format for writing to a registe r has the f ollowing fo rm:
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 h ave intern al pull-up resistors.
Parameter Symbol MIN TYP MAX
CLK Pulse width HIGH t6 100ns
CLK Pulse width LOW t5 100ns
xCS to fi rst falling CLK -
edge set up time t1 50ns
CLK to DOUT delay t2 50ns
DIN to CL K setup time t3 50ns
DIN to CL K hold time t4 50ns
t1
xCS
CL
K
DIN
DOUT
t2t3t4
t5t6
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Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 9 of 19
Serial interface Registers
The follo wing table s hows the con tent of the 16 control registers .
For a de tailed desc ription of t he commands s ee Applicati on note AN 522.
Control registers AS25 22A, AS2522B De fa ult valu e
afte r re s e t
AAAADDDD
32103210
0000Nop No operation. Write to this location to get AS2522-Satus
inform ation without alterin
g
an
y
other settin
g
.na
0001DTMFpair Frequency select depending on Tone G enerator m ode 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 S ingle Tone freque n cies if FS K = 0 (A dd r. 12) an d R IN G/Beep V olume [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
111333Hz 11 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
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Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 10 of 19
Control registers AS2522A, AS2522B De fault value
after rese t
AAAADDDD
32103210
1 0 0 0 16 gains Ha ndsfree rece ive 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 Ha ndsfree 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
1 0 1 0 16 ga ins T ra nsmit gain [16], 16 steps, 1dB s tepsize 0111
Data HS-mode HF-mode
0x0 30dB 39dB
:::
0xF 45dB 54dB
1 0 1 1 16 ga ins Re c eive gain [16], 16 steps, 1dB steps ize 011 1
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
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
1 1 0 1 x x x x Mute , Lh, H f , Ho o k S w itch 0000
Mute
Lh
Hf
His
Mute: Mute transmit 0...OFF, 1...ON
HisHfLh
0xx OnHook
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
1111xxx x Reset to defaults na
Address Data
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Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 11 of 19
Electrical ch aracteristi cs
Electrical characteristics are measured with the Test Circuit
application. Typical mean values will not be tested.
Absolute maximum ratings
Positive S upply Voltage -0.3V <= VDD <= 7V
Input Cu rrent +/- 25mA
Input Vol tage (LS) -0.3V <= Vin <= 12V
Input Vol tage (LI, C S) -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 T emperature -65°C to +125°C
Recommended operating conditions
Supply Vol tage (gen erated intern ally) 3V <= VDD <= 5V
Operatin g Temperature -25°C to +70° C
DC characteristics
ILine=15mA w/o operation of any additional external
circui try, unles s other s pecified
Symbol Parameter Conditions Min Type Max Units Test
IDDS Operatin g Current Speech M ode 3 6 mA Y
IDDH Operati ng Current Hands free Mode 7 10 mA Y
VLI Line Volta ge LIVolt=0
Line Volta ge LIVolt=1 15mA<=ILINE<=100mA 3.2
4.2 3.5
4.5 3.8
4.8 V
VY
Y
IOL Output Current, Sink
CS,SS VOL=0.4V 1 mA N
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Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 12 of 19
Transmit characteristics
ILine=15mA f=800Hz, default setti ngs unless other speci fied
Symbol Parameter Conditions Min Type Max Units Test
AM1/2TX Transmit Gai n
M1/M2 → LS ZAC(syn)=1000Ω35 +36.5 38 dB Y
AM3/4TX Transmit Gai n
M3/M4 → LS ZAC(syn)=1000Ω43 +45.0 47 dB Y
∆ATX Variati on with freq uency 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 Inpu t Impedanc e
M1/M2 10 kΩN
ZIN-M3/4 Inpu t Impedanc e
M3/M4 10 kΩN
VINmax Inpu t Voltage Range
M1/2 - M3 /4 differential ±1 Vp N
VNO Noise O utput Voltage
LS TAMP=25°C
Handset mode
Gain = 36. 5dB
-72 dBmp Y
AMUTE Mute Atten uation Mute activa ted 60 dB Y
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Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 13 of 19
Receive characte ristics
ILine=15mA f=800Hz, default setti ngs unless other speci fied
Symbol Parameter Conditions Min Type Max Units Test
ARO Receive Gain
LS → RO ZAC(syn)=1000Ω
Vol defaul t -2 -0.5 1 dB Y
ALO12 Receive Gain
LS → LO1/LO2 ZAC(syn)=1000Ω
Vol maxi mum +28 +29.0 +31 dB Y
∆ARX Variati on with freq uency 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. Cm p. f = 2 00 … 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 O utput Voltage
RO TAMP=25°C
Gain = 3dB -72 dBmp Y
ZIN-RI
VINmax
Input I mp. 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 L oss
Temp. Variation ZAC(syn)=1000Ω18 0.5 dB
Ω/°C Y
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Data Sheet AS2522B austriamicrosystems
Revision 3.4 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 lev el low group
at LS Default -7 -6 -5 dBm Y
MFrange DTMF level range
low group at LS 13 steps
Prg. in S ervice m ode -18/-6 dBm N
∆VL-H Preemphasi s L-H Preemp hasis=1 2.7 3.2 3.7 dB Y
UFC Unwan ted frequency
components 300 Hz - 4.3k Hz
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 t one handset Rel to LS
program mable in
service mode
-36
-30
-24
-18
dBr
dBr
dBr
dBr
N
N
N
N
VCT-L Comfort tone
Loudspeaker Rel to L S
program mable 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
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Data Sheet AS2522B austriamicrosystems
Revision 3.4 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
ams AG
Technical content still valid
Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 16 of 19
Typical appli cation
ams AG
Technical content still valid
Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 17 of 19
Bonding Diagram
32 Lead 7x7mm TQFP dimensions
ams AG
Technical content still valid
Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 18 of 19
Packaging
32-pin plastic TQFP (suffix Q)
For exact mech anical package dime nsions please see
austriamicrosystemsAG packagi ng informati on.
Pin-out, Marking
YYWWAAA
AS2522X
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 p roduction
AAA austriamicrosystemsAG assembly ID
X revision
Ordering Information
Number Package Description
AS2522B Q TQFP plastic thi n quad flat pac kage –
32 leads (suffix T )
AS2522B F DOF Dice- on-Foil
Devices sold by austriamicrosystems AG are covered by
the warr anty and p atent identi fication provi sions appe aring
in its Term of Sale. austriamicrosystems AG makes no
warranty , express , statutory, implied, or by descri ption
regardi ng the infor mation set f orth he rein or reg arding the
freedom o f the desc ribed devic es from paten t infrin gement.
austriamicrosystems AG reserves the right to change
specific ations and prices at any time an d without noti ce.
Therefore, prior to designin g this product into a system, it
is necessary to check with austriamicrosystems AG for
current i nformation. This prod uct is inte nded for use i n
normal c ommercial applicatio ns. Applicati ons requi ring
extended temperature range, unusual environmental
requirements, or high reliability applications, such as
military, medical life-support or life-sustaining equipment
are speci fically not recomme nded 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 res erved. The material
herein may not be r eproduced, ad apted, mer ged,
translate d, stored , or used with out the pri or written consent
of the c opyright ow ner.
The information furnished here by austriamicrosystems AG
is believed to be correct a nd accurate. H owever,
austriamicrosystems AG shall not be liable to recipient or
any thi rd pa rty for any d amages, inc luding but not limite d
to pers onal injury , property damage, loss of profits, loss of
use, inte rruption of business or indirect , special, i ncidental
or conse quential dam ages, of a ny kind, in c onnection wi th
or arisi ng out of t he furnishi ng, perform ance or us e of the
technical data herein. No obligation or liability to recipient
or any third party s hall aris e or flow out of
austriamicrosystems AG rendering of technical or other
services.
ams AG
Technical content still valid
Data Sheet AS2522B austriamicrosystems
Revision 3.4 Page 19 of 19
Contact
Headquarters
austriamicrosystems AG
Communic ations Busin ess Unit
A 8141 Sc hloss Premstät ten, Austri a
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 Münc hen, Germany
Phone: + 49/89/69364 3-0
Fax: +49/89/693643-66
France
austriamicrosystems France S.a.r.l.
124, Ave nue de Paris
F-94300 Vincennes, F rance
Phone: + 33/1/43 74 0 0 90
Fax: +33/1/43 74 20 98
Italy
austriamicrosystems Italy S.r.l.
Via Leon e Tolstoi, 64
I-20146 Mi lano, It aly
Phone: + 39/0242/367 13
Fax: +39/ 0242/29088 9
Switzerland
austriamicrosystems Switzerland AG
Rietstrasse 4
CH-864 0 Rappers wil, Swi tzerland
Phone: + 41/55/220 90 00
Fax: +41/55/220 9001
USA (we st)
austriamicrosystems USA, Inc.
Suite 116 , 4030 Moo rpark Ave,
San Jose, CA 95117, USA
Phone: + 1/408/345 17 90
Fax: +1/408/345 1795
USA (east)
austriamicrosystems USA, Inc.
Suite 400 , 8601 Six F orks Road
Raleigh, NC 27615, USA
Phone: + 1/919/676 52 92
Fax: +1/919/676 5305
United Kingdom
austriamicrosystems UK, Ltd.
Coliseum Business Centre, Watchmoor Park
Camberl ey, Surrey, G U15 3YL, U K
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-k u, Yokohama 222-0033, Japan
Phone: + 81/45/474 09 62
Fax: +81/45/472 9845
Distribu tors & Representative s
austriamicrosystems AG is represented by distributors in
the follo wing countri es. Pleas e contact yo ur nearest
regional sales office for the distributor ad dress:
Spain, Is rael, Kore a, Hong-Kon g, Taiwan, M alaysia,
Singapore, India, Brazil
Application Support
Please c ontact your local sales office or y our distrib utor.
ams AG
Technical content still valid
