AS253xRF_技术文档

austriamicrosystems

MultiꢀStandard CMOS Telephone IC

for Basic Telephones

DATA SHEET

AS2533ꢀ36

ꢀ

Rx and Tx soft clipping to avoid harsh distortion

Real or complex impedance (EU compliant)

Stabilized supply for dialler and peripherals

Automatic line loss compensation

General Description

The AS253x is a CMOS integrated circuit that contains all

the functions needed to build a high performance electronic

telephone set with basic features.

Operating range from 13 to 100 mA (down to 5 mA with

reduced performance)

The AS253x incorporates a line interface, a speech circuit,

a dialler and ringer. It is a real singleꢀchip / singleꢀdie IC

with 28 pins. It allows either package mounting or chipꢀonꢀ

board mounting.

ꢀ

Unique EMI performance (EU compliant)

Dialler

ꢀ

LD/MF dialing and mixedꢀmode dialing

The device is available in 4 versions (pinꢀcompatible) with

different features ranging from LNR only (last number

redial) to 4 direct (oneꢀtouch) memories and 10 indirect

(twoꢀtouch) memories. The sliding cursor procedure makes

the LNR function easy to use under various PABX systems.

31 digit last number redial (LNR)

4 direct/10 indirect (AS2533/36), 12 direct (AS2535)

Repeat dialing by busy or engaged (not AS2535)

Confidence tone during memory programming and mute

Notepad memory function

The versatility of the circuit is provided by pin options and a

few external components. This allows fast timeꢀtoꢀmarket

and easy adaptation to different PTT requirements. A

unique EMI performance has been achieved due to the

consequent use of CMOS amplifiers.

Pause key for access pause or wait function

3 flash timings, 100 ms, 280 ms and 375/600 ms

Sliding cursor protocol with comparison

Ringer

ꢀ

Ring frequency discrimination

Key Features

3ꢀtone melody generator

Ring melody selection via keyboard

Ring volume selection via keyboard

Version available with fixed ring melody and ring volume

Line Interface and Speech Circuit

ꢀ

Electronic Rx volume control

Electronic microphone mute

Package

Microphone amplifier with symmetrical input

ꢀ

SOIC 28 or DIE

Block Diagram

Figure 1 Block Diagram

Revision 8.10

Page 1 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Pin Description

Pin #

Symbol

Function

4

V_DD

Positive Voltage Supply

This is the supply pin for the circuit.

5

6

7

8

A_GND

STB

CI

Analog Ground

This is the analogue ground for the amplifiers.

Side Tone Balance Input

This is the input for side tone cancellation.

Complex Impedance Pin

For complex impedance a capacitor should be connected to

MO

Melody Output

PDM output of the melody generator for tone ringing with internal openꢀdrain transistor.

HiꢀZ when not active.

9

LLC

HS/DP

OSC

Line Loss Compensation

Select pin for line loss compensation (see also Figure 6 and Figure 7).

LLC = A_GND: 20 ꢀ 50 mA LLC = V_DD: 45 ꢀ 75 mA LLC = V_SS: none.

10

11

Hook Switch Input and Dial Pulse Output

This is an I/O that is pulled high by the hook switch when offꢀhook and an open drain pulls it low

during break periods of pulse dialing and flash.

OSCillator Input

Pin for ceramic resonator (3.58 MHz).

Reference: Murata CSTCC3M58GD3346ꢀR0

Murata CSTLS3M58GD3458ꢀB0

SMD

Lead

12

MODE

Signaling MODE Select Input

Mode pin

Function

Open

Dialing inhibited

Row 1

Row 2

Row 3

Row 4

LD mode, 10 pps, 33/66 ms

LD mode, 10 pps, 40/60 ms

LD mode, 20 pps, 33/66 ms

LD mode, 20 pps, 40/60 ms

Row 5

Row 61

Row 7

LD mode, 10 pps, 33/66 ms, Temp. MF with tone on first * key entry

MF only, 82/82 ms

MF only, 82/160 ms

During temporary MF: 82/160 ms

13

14

15

16

C4

C3

C2

C1

Keyboard Columns

(see key arrangements in Figure 2, Figure 3 and Figure 4)

Revision 8.10

Page 2 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Pin #

Symbol

Function

17

18

19

20

R4

R3

R2

R1

Keyboard Rows

(see key arrangements in Figure 2, Figure 3 and Figure 4)

21

FCI

Frequency Comparator Input

This is a Schmitt trigger input for ring frequency discrimination. Disabled during offꢀhook.

22

LED

LED Output Driver

Output for driving an LED that will be flashing when in Program/Mute state.

23

24

M1

M2

Microphone Inputs

Differential inputs for the microphone (electret).

25

CS

Current Shunt Control Output

This Nꢀchannel open drain output controls the external high power shunt transistor for the modulation

of the line voltage and for shorting the line during make period of pulse dialing.

26

27

V_SS

LI

Negative Power Supply

Line Input

This input is used for power extraction and line current sensing.

28

1

RI

LS

Receive Input

This is the input for the receive signal.

Line Current Sense Input

This is the input for sensing the line current.

2

MFL

RO

MF Level Setting

A voltage divider connected from this pin to A_GNDand V_SScan be used to set the DTMF level.

3

Receive Output

This is the output for driving a dynamic earpiece with an impedance of 150 to 300 Ω.

Selection Overview

Function

AS2533

AS2534/34R

AS2535

AS2536

Direct memories (oneꢀkey)

Indirect memories (twoꢀkey)

Repeat dialing

4

0

12

0

4

10

0

10

yes

P/M

yes

P/M

yes

no

yes

P/M

yes

no

LNR key

yes

no

Pause insertion by LNR key

Pause (PS) key

P/M or MT key

P/M

no

Tone/Pulse (T/P) key

Temporary MF by * key

Centrex (A ꢀ D) keys

Volume (VOL, –/+) keys

Volume reset by offꢀhook

Programming of tone ringer

yes

no

yes

AS2534:yes

AS2534R: no

yes

R3 Flash duration

600 ms

The corresponding product (AS2533ꢀ36) can be selected via bondꢀoptions (see chapter “Bond options” for details).

Revision 8.10

Page 3 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Functional Description

Keyboard Connections

(Either VOL or +/– keys)

Key closure, R_ONmax. = 1 kΩ

Key open, R_OFFmin. = 1 MΩ

C1

C2

C3

C4

R1

R2

R3

R4

P / M

4

1

5

2

6

3

7

8

9

0

*

#

R 1

VOL

B

R 2

+

R 3

LNR

A

−

C

D

RP

M 2

PS

M 3

T / P

M 4

M 1

M R

Figure 2 Keyboard Connection AS2533/36

C1

C2

C3

C4

R1

R2

R3

R4

P / M

4

1

5

2

6

3

7

8

9

0

*

#

R 1

VOL

B

R 2

+

R 3

LNR

A

−

C

D

RP

PS

T / P

Figure 3 Keyboard Connection AS2534

Revision 8.10

Page 4 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Keyboard Connections continued

(either VOL or +/– keys)

C1

C2

C3

C4

R1

R2

R3

R4

P / M

4

1

5

2

6

3

7

8

9

0

*

#

R 1

VOL

M 2

M 6

M 10

R 2

+

R 3

LNR

M 1

M 5

M 9

−

M 3

M 7

M 11

M 4

M 8

M 12

Figure 4 Keyboard Connection AS2535

During pulse dialing the speech circuit and other part of

Power On Reset

the device not operating is in a power down mode to save

current. The CS pin is pulled to V_SSin order to turn the

external shunt transistor on to keep a low voltage drop at

the LS pin during make periods.

The on chip power on reset circuit monitors the supply

voltage (V_DD) during offꢀhook. When V_DDrises above

approx. 1.2V, a power on reset occurs which clears the

RAM.

AC Impedance

DC Conditions

The ac impedance of the circuit is set by external

components. The impedance can be real or complex.

The ac impedance is determined as follows:

The normal operating range is from 13 mA to 100 mA.

Operating range with reduced performance is from 5 mA to

13 mA (parallel operation). In the operating range all

functions are operational.

ZAC = 33 Z1

At line currents below 13 mA the AS253x provides an

additional slope below 4.5V in order to allow parallel

operation (see Figure 12).

The dc value of Z1 should be 30 Ω to maintain correct dc

performance.

Return loss and side tone cancellation can be determined

independent of each other.

The dc characteristic (excluding diode bridge) is

determined by the voltage at LI and the resistor R1 at line

currents above 13 mA as follows:

Speech Circuit

VLS = VLI + ILINE × R1

The speech circuit consists of a transmit and a receive

path with dual soft clipping, mute, line loss compensation

and sidetone cancellation.

The voltage at LI is 4.5V in the normal operating range.

Revision 8.10

Page 5 of 25

Data Sheet AS2533ꢀ36

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Transmit

Line Loss Compensation

The line loss compensation is a pin option. When it is

activated, the transmit and receive gains are decreased by

6 dB at line currents from 20 to 50 mA when LLC = A_GND

and 45 to 75 mA when LLC = high (@ R1 = 30 Ω). The line

loss compensation is disabled when LLC = low (see Figure

6 and Figure 7).

The gain of the transmit path is 37 dB for 600 Ω line

termination from M1/M2 to LS (see test circuit Figure 9).

The microphone input is differential with an input

impedance of 20 kΩ.

The soft clip circuit limits the output voltage at LI to 2V_PEAK

(see Figure 11). The attack time is 30 µs/6 dB and the

decay time is 20 ms/6 dB. When mute is active, during

dialing or after pressing the P/M key, the gain reduced by >

60 dB.

Dialing Functions

Valid Keys

The key scanning is enabled when HS/DPN is pulled high

and V_DDis above V_REF. A valid key is detected from the

keyboard by connecting the appropriate row to the column

(R_ON< 1 kΩ). This can be done using an n x m keyboard

matrix with single contacts. Four diodes are used to extend

the number of rows (see keyboard arrangement fig. 2). It is

also possible to connect a microcontroller to the rows and

columns (see application note AN3010).

Receive

The gain of the receive path is 3 dB for 600 Ω line

termination (test circuit Figure 9). The receive input the

differential signal of RI and STB. When mute is active

during dialing the gain is reduced by > 60 dB. During

DTMF dialing a MF comfort tone is applied to the receiver.

The comfort tone is the DTMF signal with level that is ꢀ30

dB relative to the line signal.

P/M and MT Key

The P/M key is used to enter the Program/Mute state.

Depressing the P/M key mutes the speech circuit and the

device is in program state. Repressing the P/M key

deactivates the mute and program state (toggle

function).The MT key works in similar way, but has no

program function.

The receive gain can be changed by pressing the volume

keys. The VOL key gives a +5.4 dB boost and has a toggle

function, i.e. repressing the key resets the gain to default.

As an alternative the +/– keys can be used. The + key

increases the gain by 8.1 dB in 3 steps and the – key

decreases the gain by 5.4 dB in 2 steps (total range 13.5

dB). On AS2533/35 the volume is reset to default by next

offꢀhook and on AS2534/36 the volume setting will remain

at last setting. A POR will always reset the volume to

default.

When program/mute is activated, the LED indication is

turned on (flashing: 80 ms 'on' and 1 sec 'off').

Dial Mode Selection

The default mode (LD or MF) can be selected by the mode

pin. When default LD mode is selected, a temporary

change to MF can be invoked by pressing T/P key (not

AS2535) or the * key (when mode pin = row 5, the MF tone

is generated with the first * key entry). The circuit will

revert to LD by repression the T/P key (not AS2535) or by

pressing the R (R1, R2 or R3) key or by next onꢀhook.

The soft clip circuit limits the voltage at the receive output

(RO) to 1V

(see Figure 10). It prevents harsh

PEAK

distortion and acoustic shock.

Sidetone

A good sidetone cancellation is achieved by using the

following equation:

When MF mode is selected by the mode pin, the circuit can

not be changed temporary to LD but will remain in MF

mode.

Z_LineZ₂

=

Z_BALZ₁

The sidetone cancellation signal is applied to the STB

input.

Centrex Keys (not AS2535)

The alphanumeric keys accommodate easy use of centrex

services. The A, B, C and D keys are only valid in MF

mode (including temporary MF) and are not storable.

Pressing one of these keys will invoke the appropriate

MF tones to be transmitted.

Z1

Z_LI

The centrex keys are not stored in the RAM, and

subsequently entered digits are buffered in FIFO.

Z2

Z_BA

Figure 5 Side Tone Balance

Revision 8.10

Page 6 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Last Number Redial

Memory Keys (not AS2534)

LNR is a facility that allows resignalling of the last

manually dialed number without keying in all the digits

again. The LNR is repeatable after each offꢀhook.

The keys M1 to M12 are direct memory access keys and

the MR key (AS2533/36 only) is used for abbreviated

dialing.

The current content of the RAM is overwritten by new

entries.

Memory arrangement AS2533/36 AS2534 AS2535

Storable numbers

Direct memory keys

Indirect memories

14

4

0

12

0

A manually entered number is automatically stored in the

LNR RAM. The capacity of the RAM is 31 digits. If a

number greater than 31 digits is entered, the LNR facility

will be inhibited (until new entries < 32 digits) and further

entries will be buffered in FIFO.

10

In the on chip RAM, numbers can be stored. Each number

can contain up to 21 digits (including pauses).

During programming multiple pauses can be inserted by

pressing the PS (not AS2535) or the LNR key. Each pause

inserted within the first 5 entries will automatically be

terminated after 2 seconds whereas pauses inserted after

location 5 in a digit string will halt dialing and can be

terminated manually by pressing the PS (not AS2535) or

the LNR key. The halt function allows inꢀdialing to an

extension on a PABX.

Pauses can be inserted by pressing the PS key (not

AS2535).

Post dialed digits, i.e. digits manually entered after LNR

has been invoked, are not stored in RAM but buffered in

FIFO.

Repeat Dialing (not AS2535)

The last manually dialed number can be repeated without

going onꢀhook by pressing the RP key. If a called number

is engaged, pressing the RP key will break the line for 1.6

second (to get a new dial tone) and after a pause the

number will be repeated.

Example (45678–123 is stored in M1, where – is a

pause/wait and 123 the extension number):

offꢀhook, wait for dial tone

press M1 (45678 is dialed out)

await dial tone from called PABX

press PS or LNR (123 is dialed out)

The repeat function is enabled when prior to pressing the

RP key, a number has been dialed, and it can be invoked

an unlimited number of times until next onꢀhook. During the

1.6 second break the device is in power down mode to

save current.

Memory dialing is cascadable. However, the content of one

memory must be dialed out before a new can be invoked.

Sliding Cursor Procedure

To accommodate easy and uncomplicated redialing (LNR)

behind a PABX, a sliding cursor protocol is implemented. If

new entries match the previous RAM contents, pressing

the LNR key will dial out the remaining digits.

Recall Function

A recall (R1, R2 or R3 key) activation will invoke a flash

(timed loop break), however, the R1 flash is never

executed in LD mode. R2 and R3 will be executed

independent of the mode.

If there is an error in matching, the LNR will be inhibited

until next onꢀhook, and the RAM will contain the new

number.

If recall is the first entry in a digit string, it will be stored in

LNR RAM when digit(s) are entered after the recall.

Example (LNR content 912345, where 9 is access code):

offꢀhook, wait for PABX dial tone

If the recall key is depressed after a digit string has been

entered or dialed out, the recall will not be stored but

buffered in the FIFO together with subsequently entered

digit.

press 9 and wait for external dial tone

press LNR (12345 will be dialed out).

Tone Generator

If pressing the recall key is not followed by digit entries,

the LNR RAM remains intact.

The tone generator incorporates the DTMF tones, 3 basic

frequencies for the tone ringer and pacifier tones.

DTMF

After a recall a 270 ms pause will automatically be

The DTMF generator provides 8 frequencies, namely:

Revision 8.10

Page 7 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Low group

Digit 1ꢀ2ꢀ3ꢀA

Digit 4ꢀ5ꢀ6ꢀB

Digit 7ꢀ8ꢀ9ꢀC

Digit * ꢀ0ꢀ# ꢀD

High group

697 Hz

770 Hz

852 Hz

941 Hz

The procedure is ended by repressing the P/M key.

The default setting is digit 6, i.e. after a power on reset the

device will start up with repetition rate 4 and maximum

volume. If digit 0 is programmed, the tone ringer will be

turned off until next offꢀhook where it will turn back to the

last setting before 0. The programmed settings are stored

in the on chip RAM.

Digit 1ꢀ4ꢀ7ꢀ *

Digit 2ꢀ5ꢀ8ꢀ0

Digit 3ꢀ6ꢀ9ꢀ#

Digit AꢀBꢀCꢀD

1209 Hz

1336 Hz

1477 Hz

1633 Hz (not AS2535)

Repetition rate means that a sequence of 6 frequencies

is repeated 1, 4 or 10 times within 1 second.

The MF output level can be set with an external voltage

divider on pin MFL.

The sequence of the frequencies is controlled by the

sequence register as follows:

Voltage at pin MFL (2)

DTMF Level

ꢀ4.0 dBm

ꢀ5.2 dBm

ꢀ6.4 dBm

ꢀ7.6 dBm

ꢀ8.8 dBm

(Low Grp.)

A_GND

typ. 1.50* V

1.317 V

0.878 * A_GND

0.791 * A_GND

0.705 * A_GND

0.620 * A_GND

0.495 * A_GND

0.372 * A_GND

0.290 * A_GND

0.210 * A_GND

0.130 * A_GND

V_SS

Sequence F1 F2 F3 F1 F2 F3 …

1.187 V

1.058 V

Pacifier Tone

0.930 V

By MF dialing the DTMF tones are provided to the earpiece

as comfort tone.

0.743 V

ꢀ10.0 dBm

ꢀ11.2 dBm

ꢀ12.4 dBm

ꢀ13.6 dBm

ꢀ14.8 dBm

ꢀ16.0 dBm

0.558 V

0.435 V

During programming a key entry is acknowledged by a

pacifier tone of 1477 Hz. The level of the pacifier tone is

approximately 60 mV at the RO output. The duration is 40

ms after every key entry in program mode.

0.315 V

0.195 V

0.000 V (V_SS

)

(Z_LINE= 600)

When terminating the program mode with the P/M key an

acknowledge tone of 140 ms is provided. An invalid key

entry, however, will cause a termination of the program

mode indicated by a rejection tone of 4 times 40 ms with

28 ms pauses between the tone bursts.

*typical MFL values for A_GND= 1.5V

The preemphasis is 2.6 dB.

The MF tones are according to CEPT recommendations.

Tone Ringer (Melody/Volume)

The three basic frequencies of the melodies are:

F1 = 800 Hz, F2 = 1067 Hz, and F3 = 1333 Hz (± 5%).

Ring Frequency Discrimination

The ring frequency discriminator assures that only signals

with a frequency between 13Hz and 70 Hz are regarded as

valid ring signals. The time for recognizing a valid ring

signal is 1/f seconds, where 'f' is the ring frequency.

The repetition rate and the volume of the tone ringer

melodies can be programmed by pressing P/M and #

followed by a digit as follows:

Digit Repetition Rate

Volume

ꢀ 16 dB

ꢀ 7 dB

When a valid ring signal is present for 73 ms continuously,

the melody generator is activated and remains active as

long as the ring signal is present.

1

2

3

4

5

6

7

8

9

0

1 time (50 ms pause)

4 times

0 dB (max.)

ꢀ 16 dB

ꢀ 7 dB

Once the melody generator has been started, the ring

signal is continuously monitored and the melody generator

is instantly turned on or off according to the momentary

presence of a valid or invalid ring signal respectively (until

next POR or offꢀhook).

4 times

4 times (default, AS2534R)

10 times

0 dB (max.)

ꢀ 16 dB

ꢀ 7 dB

10 times

0 dB (max.)

Off

None

Revision 8.10

Page 8 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Typical Characteristics of

Line Loss Compensation

(dB) Tx Gain

35

LLC = VSS

34

33

32

31

30

29

LLC = AGND

LLC = VDD

f = 800 Hz

ZLINE = 600Ω

VLS = -10 dBm

DC Line

Current

20

30

40

50

60

70

80 (mA)

Figure 6 Typical Tx Gain Characteristics Line Loss Compensation

(dB) Rx Gain

+4

+3

+2

LLC = VSS

LLC = AGND

LLC = VDD

f = 800 Hz

ZLINE = 600Ω

+1

0

VLS = -10 dBm

VOL = 0 dB (neutral)

-1

-2

DC Line

Current

20

30

40

50

60

70

80 (mA)

Figure 7 Typical Rx Gain Characteristics Line Loss Compensation

Revision 8.10

Page 9 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Typical Application

Complex Impedance

(270 W + 750 W // 150 nF)

Only the components

necessary for

presenting the

complete functions of

the AS253x are

included.

The external components

might change to comply

with various national PTT

regulations and to interface

to different transducers.

Since the AS253x is a

component and not a complete

system, it can not be approved

as a stand alone part by the

standard bodies. Hence, full

conformance to any standards

is depending on the application

in which the AS253x is being

used, and therefore, approvals

by the standard bodies are the

responsibility of the customer

and austriamicrosystems AG will

not have tested the product to

meet specific standards.

For further application

information please refer to

application note AN2201

.

Figure 8 Typical Application

Revision 8.10

Page 10 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

When Code 0 (tone ringer off) has been programmed, the

device will automatically return to previous setting

(different from 0) by next offꢀhook.

Programming Procedures

Procedure Principles

Temporary MF

The procedures for utilizing the features of the AS253x are

optimized out of consideration for the human factor in

order to:

The procedure below assumes that the device is operated

in puls mode.

ꢀ

meet the user’s expectations

be easy to learn and relearn

1. Go offꢀhook

not invoke any automatic functions which the user

doesn’t expect

2. Press [*] or [T/P] to switch to DTMF mode

3. Press [R] or [T/P] to switch back to PULS mode

4. Got to 2. to switch again to DTMF mode

ꢀ

protect the user from committing critical errors, e.g.

dialing wrong numbers, deleting stored numbers, etc.

be consistent, simple and usable.

Mode pin is connected to row 1, 2, 3, 4, or 5. When mode

pin = row 5, pressing the [*] key also transmits the tone by

MF selected. The [T/P] key (not AS2535) can be used

alternatively to the [*] key.

The following chapters describe the operating procedures

for the provided features. Pressing an invalid key or key

combination during programming will cause the device to

abort the program state. Pressing any key combination or

sequence which is not described or defined may cause the

device to enter a state or mode that does not comply with

the expectation of the user. In such cases, any undesired

state can be terminated at any time by going onꢀhook / offꢀ

hook which will generate a functional reset.

Automatic Dialing

The following procedure describes the dialing procedure

and the internal sequences:

1. Go offꢀhook

2. Enter the number by pressing digit, [M1]ꢀ[M12], [LNR]

or [MR] + digit

Storing Numbers (not AS2534)

Up to 14 numbers, each with maximum 21 digits, can be

stored into the internal RAM.

3. The number is internally buffed in the FIFO

4. Toneꢀ or PulsꢀDialing starts

5. Wait for connection

1. Press [P/M] to enter program mode

2. Enter location (MR + digit¹; or M1 to M12)

3. Enter number ꢀ entries (0ꢀ9, *, #, PS or LNR, R1, R2,

R3) will b written directly into the selected memory

location)

6. Got to 2 for entering postdialed digits

Postdialed digits are not stored but buffed in the FIFO.

4. Press [P/M] to store and exit or go onꢀhook to abort

5. Go to 1 for storing further numbers

Programming Tone Ringer

Three different ringer melodies with three levels each can

be programmed. AS2534R cannot be programmed.

1. Press [P/M] to enter program mode

2. Press [#] for ringer programming mode

3. Enter Code to select ringer melody and volume(see

code table in section Tone Ringer (Melody/Volume)

4. Press [P/M] to store and exit or go onꢀhook to abort

1

Digit includes 0 – 9

Revision 8.10

Page 11 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Timing Diagrams

LD Dialing

MUTE

MASK

HS/DPN

t_IDP

t_B

t_IDP

t_B

t_PDP

t_M

t_PDP

t_M

LD Dialing with Access Pause

MUTE

MASK

HS/DPN

t_IDP

t_B

t_AP

t_IDP

t_B

t_PDP

t_M

t_PDP

t_M

MF Dialing

MUTE

HS/DPN

LS

t_TD

t_ITP

t_TD

t_ITP

t_AP

t_TD

t_ITP

Revision 8.10

Page 12 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Flash

MUTE

MASK

HS/DPN

t_FD

t_PFP

t_M

t_FDt_M

Repeat Dialing (not AS2535)

Number

engaged

New

connection

RP key

MUTE

DIALLING

HS/DPN

Power Down

t_RP

t_AP

Revision 8.10

Page 13 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Electrical Characteristics

Absolute maximum ratings

Positive Supply Voltage

Input Current

ꢀ0.3V < V_DD< 7V

± 25mA

Input Voltage (LS)

ꢀ0.3V < V_IN< 10V

ꢀ0.3V < V_IN< 8V

ꢀ2V < V_IN< V_DD+0.3V

ꢀ0.3V < V_IN< +35V

ꢀ0.3V < V_IN< V_DD+0.3V

± 1000V

Input Voltage (LI, CS)

Input Voltage (STB, RI)

Input Voltage (MO)

Digital Input Voltage

Electrostatic Discharge (HBM 1.5kΩꢀ100pF)

Storage Temperature

ꢀ65°C to +125°C

Recommended operating conditions

Supply Voltage * (Speech Mode)

3.8V < V_DD< 5V

Oscillator Frequency (Resonator: Murata CSA 3.58M G312AM)

3.58 MHz

Operating Temperature

ꢀ25°C to +70°C

* This voltage is generated internally

DC Characteristics (I_LINE= 15 mA unless otherwise specified)

Symbol

Parameter

Conditions

Min.

Typ.

3

Max.

Units

mA

ꢁA

I_DD

Operating Current

Speech mode

5

MF dialing

4

LD dialing, V_DD= 2.5V

Ring mode, V_DD= 2.5V

200

300

0.05

ꢁA

I_DD0

Retention Current

Idle mode, V_DD= 2 V,

T_AMB= 25°C

ꢁA

V_LI

I_OL

Line Voltage (default)

13 mA < I_LINE< 100 mA

4.5

1.5

V

Output Current, Sink

CS, HS/DP, MO

V_OL= 0.4V

mA

I_OL

V_IL

Output Current, Sink; LED

Input Low Voltage

4

mA

V

HS/DPN; FCI

T_AMB= 25°C

HS/DPN; FCI

T_AMB= 25°C

V_SS

0.3 V_DD

V_IH

Input High Voltage

0.7 V_DD

V_DD

V

Revision 8.10

Page 14 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

AC Characteristics (I LINE = 15 mA; f = 800 Hz unless otherwise specified)

Symbol Parameter

Conditions

Min

Typ

Max

38.1

2

Units

Tx

Transmit

Test Circuit Figure 9

M1/M2 to LI

A_TX

Gain, Transmit

35.1

36.6

±0.8

dB

Variation with Frequency

f = 500 Hz to 3.4 kHz

∆A_TX/F

THD

V_AGC

A_SCO

t_ATTACK

t_DECAY

Z_IN

Distortion

V_LI< 0.25V_RMS

%

Soft Clip Level

Soft Clip Overdrive

Attack Time

2

V_PEAK

dB

20

30

20

µs/6 dB

ms/6dB

Decay Time

Input Impedance (M1/M2)

kΩ

dB

A_MUTE

V_NO

Mute Attenuation

Noise Output Voltage

Input Voltage Range

(M1/M2)

Mute activated

T_AMB= 25°C

Differential

60

ꢀ72

dBmp

V_PEAK

V_{IN Max}

±1

Single Ended

±0.5

BJT

V_{IN MAX}

V_TX

Output Driver

Input Voltage Range (LI)

Dynamic Range

±2

V_PEAK

dB

RL

Return Loss

18

Z_RL=1000Ω; T_AMB= 25°C

Temperature Variation

0.5

∆Z_AC/TEMP

Rx

Ω/°C

Receive

Test Circuit Figure 9

LI to RO

A_RX

Receive Gain (Vol. default)

Volume Gain

1.5

3

4.5

dB

dBr

dB

A_VOL

∆A_RX/F

THD

V_AGC

A_SCO

t_ATTACT

t_DECAY

V_NO

VOL key

+5.4

Volume Gain

–/+ keys

ꢀ5.4/+8.1

±0.8

Variation with Frequency

f = 500 Hz to 3.4 kHz

Distortion

V_RI< 0.25V_RMS

2

%

Soft Clip Level

V_RO

=

1

V_PEAK

dB

Soft Clip Overdrive

Attack Time

10

30

20

V_RI> 0.8V_RMS

µs/6 dB

ms/6dB

dBmp

dBm

Decay Time

Noise Output Voltage

Unwanted F. Components

Input Impedance (RI)

Input Voltage Range (RI)

Sidetone Cancellation

Input Voltage Range (STB)

Input Impedance (STB)

T_AMB= 25°C

ꢀ72

ꢀ60

V_UFC

Z_IN

50 Hz....20 kHz

8

kΩ

V_PEAK

dB

V_{IN RI}

A_ST

±2

V_RI< 0.25V_RMS

26

V_{IN ST}

Z_IN

±2

80

V_PEAK

kΩ

Revision 8.10

Page 15 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

AC Characteristics (cont´d) (I_LINE= 15 mA; f = 800 Hz unless otherwise specified)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Keyboard

Key Debounce Time

15

ms

t_D

HS/DPN Input

Low to High Debounce

Going offꢀhook

Not LD dialing

During LD dialing

15

ms

t_HSꢀL

t_HSꢀH

High to Low Debounce

210

270

DTMF

F

Frequency deviation

MF Tone Level (Low group)

T_AMB= 25°C, Note 5

1.2

%

ꢀ 2.5

1.8

ꢀ 4

ꢀ 5.5

dB

V_MF

MFL = A_GND,T_AMB= 25°C

MF Tone Level (Low group)

MFL Range = V_SS… A_GND

T_AMB= 25°C

,

ꢀ16…ꢀ4

dB

Preemphasis Low to High

Unwanted F. Components

Note 3; MFL = V_SS

T_AMB= 25°C,

2.4

3.0

dB

∆V_LꢀH

300 Hz...5 kHz

ꢀ 40

dBm

V_UFC

5 kHz...14 kHz

ꢀ 50

ꢀ 70

ꢀ 80

85

dBm

ms

14 kHz...28.5 kHz

28.5 kHz...40 kHz

Tone Duration

Note 1&6; Mode=row 6 or 7

Note1; Mode=row 6

Note 1 & 6; Mode=row 7

Note 2

80

82.3

165

t_TD

t_ITP

t_TR

t_TF

Inter Tone Pause

Tone Rise Time

Tone Fall Time

85

170

5

ms

150

Note 2

5

LD

Dial Rate

Mode = row 1, 2 or 5

Mode = row 3 or 4

Mode = row 2

9.53

19.05

57

10

20

10.5

21

pps

ms

t_DR

Break Period

Make Period

PreꢀDigit Pause

Inter Digit Pause

61.2

30.6

66

63

t_/B

Mode = row 4

28.5

63

31.5

69

t_/B

Mode = row 1 or 5

Mode = row 3

t_/B

31.5

33

34.5

t_/B

Mode = row 2

Mode = row 4

Mode = row 1 or 5

Mode = row 3

38

19

40.8

20.4

33

42

21

ms

t_M/

t_PDP

t_IDP

31.5

15.7

34.5

17.3

16.5

35

Mode = row 1, 2, 3, 4 or 5

fosc = 3.58 MHz

780

790

800

High to Low Debounce

Mute Overhang

During LD dialing

270

t_M

ms

t_HSꢀH

t_MO

Revision 8.10

Page 16 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Symbol Parameter

Conditions

Min

Typ

Max

Units

t_FD

Flash Duration 1

Flash Duration 2

Flash Duration 3

Post Flash Pause

Access Pause

R1 key

100

270

600

102

300

650

ms

sec

R2 key

R3 key (AS2533/34/35/36)

t_PFP

t_AP

274

2.05

1.6

Note 8

2.0

2.12

t_RP

Repeat Break Time

Tone Ringer

V_MO

t_MD

F1

Melody Output

Melody Delay

PDM

10

ms

Hz

s

Frequency 1

800

1067

1333

1/f + 73ms

note 4

13

F2

Frequency 2

F3

Frequency 3

t_DT

Detection Time

Detection Timeꢀout

Min. Detection Frequency

Max. Detection Frequency

Pacifier Tone

Initial

t_TO

f_MIN

f_MAX

ms

Hz

70

Program Mode Only

P/M mode, key entry

Key entry

f_PT

Frequency

1477

60

Hz

mV

ms

V_RT

Level (RO)

t_RTDꢀE

t_RTDꢀA

t_RTDꢀR

Duration, Key Entry

Duration, Acknowledge

Duration, Reject

LED Output

Valid key entry, prog.

Terminate with P/M key

Invalid key entry, note 7

40

140

4x40

t_LEDꢀON

"onꢀtime"

P/M state

80

1

ms

t_LEDꢀOFF

Interval

sec

Comfort Tone (DTMF)

Level (RO)

V_CT

Relative to LS

ꢀ30

dBr

Note 1: The values are valid during automatic dialing and

are minimum values during manual dialing, i.e. the

tones will continue as long as the key is depressed.

Note 2: The rise time is the time from 10% of final value till

the tone amplitude has reached 90 % of its final

value.

Note 5: This does not include the frequency deviation of the

ceramic resonator.

Note 6: During temporary MF mode.

Note 7: An invalid key entry in program mode will invoke a

tone sequence with 4 tone bursts of 40 ms and

pauses between bursts of 28 ms and abort the

program mode.

Note 3: Relative to high group.

Note 4: The FCI circuit is reset by POR and HS/DPN pulled

high (offꢀhook). After a reset the FCI circuit is in a

standby state. A positive edge on FCI will start a 73

ms timer and the frequency discrimination is

initiated. Whenever a period of the ring signal is

missing, the timer is reset. When a valid ring signal

is present for 73 ms, the melody generator is

started and is directly controlled by the ring signal.

This condition will remain until a new reset.

Note 8: Pauses inserted within the first 5 entries of a digit

string will be automatically terminated after 2

seconds. Pauses inserted after location 5 can only

be terminated manually by pressing the PS or LNR

key.

Revision 8.10

Page 17 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Test Circuit

Figure 9 Test Circuit

Revision 8.10

Page 18 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Characteristic Curves (Typical)

1,2

12

[1%1]

10

9

2,5

10

soft clipping

[Vp]

VRO

soft clipping

[9%]

[Vp]

2,0

1,0

0,8

0,6

0,4

0,2

0,0

VLS

8

7

Line Current: 20mA

Frequency: 800Hz

Tamb: 25°C

Line Current: 20mA

Frequency: 800Hz

Tamb: 25°C

Typically

7

1,5

1,0

0,5

0,0

6

Typically

5

4

THD

3

THD

2

1

0

1

0

0,00 0,25 0,50 0,75 1,00 1,25 1,50 1,75 2,00

[Vp]

0

25

50

75

100

125

150

[mVp]

Line Input Voltage (LS)

Microphone Input Voltage (M1/M2)

Figure 10 Receive Soft Clipping and Distortion

Figure 11 Transmit Soft Clipping and Distortion

8

7

6

5

4

3

2

1

0

VLS

VLI

Typically

No AC signals

Tamb: 25°C

0

10

20

30

40

50

60

70

80

90

100

Line Current [mA]

Figure 12 DC Mask

Revision 8.10

Page 19 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Bond Pad Layout

Bond Options

Product Version

Bond Pad

Connection

AS2533

BOND_AS2535

BOND_AS2536

not bonded

(1)

AS2534/34R

BOND_AS2535

BOND_AS2536

not bonded

bonded to MODE

AS2535

AS2536

BOND_AS2535

BOND_AS2536

bonded to MODE

not bonded

BOND_AS2535

BOND_AS2536

not bonded

bonded to MODE

(1)

For deliveries as packaged devices (SOIC28), LNR only is tested, direct and indirect memories are not tested!

Revision 8.10

Page 20 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Sizes and Coordinates

Die Size:

3.190mm x 2.975mm

Bond Pad Size:

Bond Pad Coꢀordinates:

85ꢁm x 85ꢁm

Reference coꢀordinate of DIE = DIE center

Reference coꢀordinate of PAD = PAD center

X

y

x

y

[ꢁm]

Pad Name

Pin No

[ꢁm]

Pad Name

Pin No

Pads on the Left

Pads on the Right

ꢀ1413.50

ꢀ1392.50

1052.25

VDD

AGND

STB

4

5

1392.50

1413.50

ꢀ1053.80

R1

FCI

LED

M1

20

21

22

23

24

796.25

586.25

226.25

ꢀ107.75

ꢀ399.35

ꢀ974.20

ꢀ663.00

ꢀ319.80

408.75

683.75

6

CI

7

MO

8

M2

LLC

9

Pads on the Top

HS/DP

10

1227.50

1079.50

969.50

627.50

54.50

1301.25

CS

VSS

LI

25

26

27

28

1

Pads on the Bottom

1301.25

ꢀ1244.00

ꢀ862.10

ꢀ696.70

ꢀ432.50

ꢀ215.10

ꢀ49.70

ꢀ1285.00

OSC

11

12

BOND_AS2535

MODE

RI

BOND_AS2536

ꢀ90.50

LS

C4

C3

C2

C1

R4

R3

R2

13

14

15

16

17

18

19

ꢀ449.50

ꢀ744.50

MFL

RO

2

3

214.50

379.90

677.30

842.70

1173.30

Revision 8.10

Page 21 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Vertical Structure of Bond Pads

Process CXQ/CXB – FAB B

Layer Specification

metal 2

upper layer:

960 nm AISiCu

98.5% Aluminium

1.0% Silicon

metal 2

metal 1

0.5 % Copper

lower layer:

40 nm Titanium

450 nm AISiCu

98.5 % Aluminium

1.0% Silicon

metal 1 barrier

polysilicon

oxide

metal 1

upper layer:

0.5 % Copper

lower layer:

upper layer

lower layer

40 nm Titanium

80nm Titanium Nitride

30nm Titanium

Si

substrate

metal 1 barrier

polysilicon

oxide

270 nm polysilicon

460 nm thermal oxide

silicon substrate

General Conditions

Passivation

200 nm silicon oxynitride + 550 nm silicon nitride

Ink Dots, water resistant, Diameter 0.4...1.2 mm

< 5% in average

Marking of Failure Dice

Allowed Loss after Assembly

< 10% for a single delivery lot

Compensation is limited to replacement of the number of defectives exceeding the above

allowances.

Quantity of dice per delivery lot Only complete wafers can be delivered, therefore the number of good dice delivered may

differ from the order quantity up to ±1000 pcs.

Storage Conditions

Dice on wafer or dice on foil must be stored in originally sealed boxes or bags.

For storage period ꢀ see below.

Except for RMA, opened boxes or bags will not be accepted by austriamicrosystems for return

Conditions for Delivery as Wafer

Wafer diameter

200 mm (amsꢀFABꢀB) or 150 mm (XFAB)

380 ± 20ꢁm (amsꢀFABꢀB) or 640 ± 20ꢁm (XFAB)

back grinding, silicon

Wafer thickness

Back finishing

Scribe lane width

100 ± 20ꢁm

Packing

Wafer Box Ultrapack 200 / sealed in foil bags

6 month, Tamb = 25° C

Max. Storage time in sealed

box

Revision 8.10

Page 22 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Conditions for Delivery as Dice on Foil, sawn

Die thickness

Back finishing

Frame

380 ± 20ꢁm

back grinding, silicon

Material: Plastic

Size: see figure

Frame Position Tolerance

Center wafer to frame: ± 4mm

Angle deviation wafer to frame: ± 8°

Orientation wafer to frame: Wafer flat to frame side with kerfs

Covering adhesive foil to frame: >5mm

Type: PVC with acrylic adhesive

Thickness: 70 ± 20 ꢁm

Tape

Sawing conditions

Sawing mode: Saw ꢀ through mode

Sawing width: typ. 60 ꢁm

Kerf depth in foil: typ. 20 ꢁm

XV ꢀdimension deviation: max.25 ꢁm

frame sealed in foil bags filled with nitrogen

2 months, Tamb = 25 °C

Packing

Storage time In sealed bags

Mechanical Drawing of Frame (valid for 200 mm and 150 mm wafer)

Revision 8.10

Page 23 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Pin Configuration

28 Pin SOIC (suffix T)

Packaging

The device is available in the packages outlined below (not

to scale). For exact mechanical package dimensions

please see austriamicrosystemsAG packaging information.

28ꢀpin plastic SOIC (suffix T)

Max. Body Length

Max. Body Width

Pitch

18.1mm / 713mil

7.6mm / 300mil

1.27mm / 50mil

Ordering Information

Device

Order Number

Package

Features

AS2533 T

AS2533 F

AS2533 W

AS2534B T

AS2534B F

AS2534B W

AS2534R T

AS2534R F

AS2534R W

AS2535 T

AS2535 F

AS2535 W

AS2536 T

AS2536 F

AS2536 W

AS2533UꢀZSOꢀU

28 pin SOIC in tubes LNR, 4 direct/10 indirect memories

pls see bottom rows

AS2534UꢀZSOꢀU

Dice on foil, sawn

Dice on wafer

LNR, 4 direct/10 indirect memories

(2)

28 pin SOIC in tubes LNR only, no direct/indirect memories

pls see bottom rows

AS2534RꢀZSOꢀU

Dice on Foil, sawn

Dice on Wafer

LNR only, no direct/indirect memories

(2)

28 pin SOIC in tubes LNR only, no direct/indirect memories, ringer fixed

pls see bottom rows

AS2535UꢀZSOꢀU

Dice on Foil, sawn

Dice on Wafer

28 pin SOIC

LNR only, no direct/indirect memories, ringer fixed

LNR, 12 direct memories

pls see bottom rows

AS2535UꢀZSOꢀU

Dice on Foil, sawn

Dice on Wafer

28 pin SOIC

LNR, 12 direct

LNR, 4 direct/10 indirect memories

pls see bottom rows

Dice on Foil, sawn

Dice on Wafer

(1)

AS253x F

AS253xUꢀZSWꢀF

AS253xUꢀZSW

AS253xRꢀZSWꢀF

AS253xRꢀZSW

Dice on Foil, sawn

Dice on Wafer

All versions

(1)

AS253x W

AS253xR F

AS253xR W

All versions

(1)

Dice on Foil, sawn

Dice on Wafer

All versions, ringer fixed

(1)

All versions, ringer fixed

Please Note:

(1)

For wafer delivery or diceꢀonꢀfoil delivery, the versions can be selected by bond options.

(2)

For deliveries as packaged devices (SOIC28), LNR only is tested, direct and indirect memories are not tested!

Revision 8.10

Page 24 of 25

Data Sheet AS2533ꢀ36

austriamicrosystems

Contact Information

austriamicrosystems AG

Business Unit Communications

A 8141 Schloss Premstaetten, AustriaꢀEU

T. +43 (0) 3136 500 0

F. +43 (0) 3136 500 5692

http://www.austriamicrosystems.com

For Sales Offices, Distributors and Representatives, please visit:

http://www.austriamicrosystems.com/contact

Copyright

without the prior written consent of the copyright owner.

All products and companies mentioned are trademarks of their respective companies.

Disclaimer

Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification 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 lifeꢀsupport or lifeꢀsustaining equipment are specifically

not recommended without additional processing by austriamicrosystems AG for each application.

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.

austriamicrosystems – a leap ahead

Revision 8.10

Page 25 of 25


型号：	AS253xRF
厂家：	AMS(艾迈斯)
描述：	Multi-Standard CMOS Telephone IC for Basic Telephones 多标准CMOS IC电话基本电话电话
文件：	总26页 (文件大小：1591K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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