U4089B-P ATMEL Corporation, U4089B-P Datasheet

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U4089B-P

Manufacturer Part Number
U4089B-P
Description
Monolithic Integrated Feature Phone Circuit
Manufacturer
ATMEL Corporation
Datasheet
Features
Benefits
Applications
1. Description
The telephone circuit U4089B-P is a linear integrated circuit for use in feature phones,
answering machines and fax machines. It contains the speech circuit, sidetone
equivalent and ear protection rectifiers. The circuit is line-powered and contains all
components necessary for the amplification of signals and adaptation to the line.
An integrated voice switch with loudspeaker amplifier enables
hands-free operation. With an anti-feedback function, acoustical feedback during
listening
wide range of peripheral circuits.
Electrostatic sensitive device.
Observe precautions for handling.
Adjustable DC Characteristic
Transmit and Receive Gain Adjustable
Symmetrical Input of Microphone Amplifier
Anti-clipping in Transmit Direction
Automatic Line-loss Compensation
Built-in Ear Protection
DTMF and MUTE Input
Adjustable Sidetone Suppression Independent of Sending and Receiving Amplification
Integrated Amplifier for Open-listening Operation
Anti-clipping for Loudspeaker Amplifier
Improved Acoustical Feedback Suppression
Selectable Line Impedance
Voice Switch
Supply Voltages for All Functional Blocks of a Subscriber Set
Operation Possible from 10-mA Line Current
Filters Against EMI on Critical I/O
Complete System Integration of Analog Signal Processing on One Chip
Very Few External Components
Less Components for EMI protection
Feature Phones
Answering Machines
Fax Machines
Speaker Phones
can be reduced significantly. The generated supply voltage is suitable for a
open-listening
open
or
Monolithic
Integrated
Feature Phone
Circuit
U4089B-P
Rev. 4518C–CORD–10/05

Related parts for U4089B-P

U4089B-P Summary of contents

Page 1

... Speaker Phones 1. Description The telephone circuit U4089B linear integrated circuit for use in feature phones, answering machines and fax machines. It contains the speech circuit, sidetone equivalent and ear protection rectifiers. The circuit is line-powered and contains all components necessary for the amplification of signals and adaptation to the line. ...

Page 2

... MIC2 1 DTMF 41 TX TTXA ACL 27 INLDR 26 Acoustical INLDT 29 feedback TLDR suppression 28 control TLDT 25 ATAFS 11 SAO SACL 21 TSACL 23 SAI 22 GSA U4089B-P 2 Speech Audio circuit amplifier Voice switch GT STO 600 900 TXA Impedance Transmit mute control MUTX RECO GR Dialer IMPSEL AGA IND SENSE V ...

Page 3

... SAI Speaker amplifier input (for loudspeaker, tone ringer and hands-free use). Note: Filters against electromagnetic interference (EMI) are located at pins MIC1, MIC2, RECIN and STI. 4518C–CORD–10/05 sets the slope of the DC characteristic, and affects L the speaker amplifier is switched off. U4089B-P 3 ...

Page 4

... RECIN Input of receiving path; input impedance is typically resistor from this pin to GND sets the amplification of microphone and DTMF signals; the input amplifier can be muted by applying V Note: Filters against electromagnetic interference (EMI) are located at pins MIC1, MIC2, RECIN and STI. U4089B 4518C–CORD–10/05 ...

Page 5

... In order to improve the supply during worst-case operating conditions, the PNP current source (I ) supplies an extra amount of current to the supply voltages when the NPN in parallel is BOPT unable to conduct current. The U4089B-P contains a series regulator which provides a supply voltage V suitable for a microprocessor. Figure 3-1. V Figure 3-2. ...

Page 6

... Selection of the active channel is made by comparison of the logarithmically compressed TX and RX envelope curves. The system configuration for group listening, which is realized in the U4089B-P, is illustrated in Figure shown in a simplified way (operational amplifiers with two diodes). Figure 4-1. ...

Page 7

... Max AGA att. - GSA VBG + SAI SAI TLDR INLDR Acoustic Feedback Suppression by Alternative Control of Transmit and Speaker Amplifier Gain TLDT TXA RLDT INLDT RLDR INLDR TLDR RATAFS U4089B STO Zint RECIN RECO GR STI STO STN SAI AGA AGA IAGAFS IATGSA IGSA ...

Page 8

... GSA reduced, the attenuation of AFS is automatically reduced by the same amount in order GSA Figure 4-4. U4089B-P 8 provides a detailed diagram of the AFS (Acoustic Feedback Suppression). sets maximum attenuation decreases the attenuation when speaker amplifier gain is reduced ...

Page 9

... Comparator Thresholds Depend on DC Mask and Line Impedance 10.0 12.0 14 ILON at line impedance = 600 Ohm = ILOFF at line impedance = 600 Ohm = ILON at line impedance = 900 Ohm = ILOFF at line impedance = 900 Ohm U4089B-P /IL vary slightly with the ON OFF IL off on IL RDC = RDC = 130 k RDC = 68 k 16.0 18.0 20.0 9 ...

Page 10

... L Gain deviation T amb CMRR of microphone amplifier Input resistance of MIC RGT = 12 k amplifier RGT = > Distortion at line V = 700 > 19 mA, d < Maximum output voltage V mic CTXA = 1 µF U4089B-P 10 Symbol amb T stg P tot V ESD V ESD Symbol R thJA = 2 mA, RDC = 130 amb = GND, see ...

Page 11

... Symbol Min. Typ. n – –6.4 –5 300 mV GEN G –8 R –7.75 – 1 0 – –7.0 –6 840 900 imp U4089B-P Max. Unit –72 dBmp –5 –6. ±0.5 dB ±0.5 dB ±0.5 dB 1.1 V rms dB V rms mA (peak) –77 dBmp 10 –5.0 dB 960 11 ...

Page 12

... TMF Amplifier Test Conditions: IMP = 2 mA 0.3 mA, V Adjustment range of DTMF gain Mute active mA DTMF DTMF amplification Mute active: MUTX = VMP Gain deviaton T amb U4089B mA, RDC = 130 amb = GND, see Figure 8-11 on page 22 MUTX Pin = 560 560 mV – + VMP MUTX = – ...

Page 13

... mA, 20 GND = 25 C, RGSA = 560 k , amb (AC tests), unless otherwise specified. Symbol Min. Typ. 60 180 1.5 ATAFS V 3 +20 MUTX I –20 MUTX V – MUTX 0.3V V MUTX U4089B-P Max. Unit 300 k 130 2 % ±0 3.5 V 3.3 V 7.6 V +30 µA –30 µ ...

Page 14

... Logic level 0 = < (0.3V > (1V) < > (V AFS = Acoustical feedback-suppression control AGA = Automatic gain adjustment TXACL = Transmit anti-clipping control ES = External supply U4089B-P 14 U4089B-P Control MUTX MIC1, MIC2 transmit enabled receive enable AFS = on AGA = on TXACL = on DTMF transmit enabled receive enable AFS = on AGA = on TXACL = on ...

Page 15

... Figure 8-1. Figure 8-2. 4518C–CORD–10/05 Typical DC Characteristic Typical Adjustment Range of the Transmit Gain G (dB) T RGT (kohm) U4089B-P 15 ...

Page 16

... Figure 8-3. Figure 8-4. U4089B-P 16 Typical Adjustment Range of the Receive Gain Typical AGA Characteristic 4518C–CORD–10/05 ...

Page 17

... Figure 8-5. Figure 8-6. 4518C–CORD–10/05 Typical Load Characteristic Characteristic and a 3-mW Loudspeaker Output Typical Load Characteristic (RDC = 130 k ) and a 3-mW Loudspeaker Output U4089B-P for a Maximum (RDC = infinity) for a Medium DC Characteristic 17 ...

Page 18

... Figure 8-7. U4089B-P 18 Typical Load Characteristic (RDC = and a 3-mW Loudspeaker Output for a Minimum DC Characteristic 4518C–CORD–10/05 ...

Page 19

... RGS open 1 DTMF S5 MIC2 3 MIC1 4 6 IND GND 10 SENSE 9 RSENSE 10 VB RSAO SAO 11 100K CMP 4.7U 13 VMP 20 IMPSEL + TSACL 21 U4089B-P CRIN 47N RECIN 42 CTXA 1U 41 TTXA RGR 68N RECO 39 100 RNW2 STI 100U STO open 32 RREF 31 IREF 62K RAGA 30 AGA CLDR ...

Page 20

... Figure 8-9. DC Voltage Current Test RGS RDC + CB RVMP 1.65K + U4089B open 1 DTMF MIC2 3 MIC1 4 6 IND GND 10 SENSE 9 RSENSE 10 VB RSAO SAO 11 100K CMP 4.7U 13 VMP 20 IMPSEL TSACL 21 CRIN 47N RECIN 42 CTXA 1U 41 TTXA RGR 68N RECO 39 100 RNW2 36 STI 3K CM ...

Page 21

... RGS open 1 DTMF MIC2 3 MIC1 4 6 IND GND 10 SENSE 9 RSENSE 10 VB SAO 11 CMP 4.7U 13 VMP 20 IMPSEL + TSACL 21 U4089B-P CRIN 47N RECIN 42 CTXA 1U 41 TTXA RGR 68N RECO 39 100 RNW2 STI 100U 33 VM offen STO 32 RREF 31 IREF 62K RAGA ...

Page 22

... Figure 8-11. AC Tests RDC DC CB RSAO 100K 4.7U 1.65K U4089B-P 22 RGS open 1 DTMF MIC2 3 MIC1 4 6 IND GND 10 SENSE 9 RSENSE 10 VB SAO 11 13 VMP 20 IMPSEL + TSACL 21 CRIN 47N RECIN 42 CTXA 1U 41 TTXA RGR 68N RECO 39 100 RNW2 STI 100U 33 VM open ...

Page 23

... Typical Values of External Components (see Name Value C 4 µ 220 µ µ µ 100 µ 150 100 µF 15 4518C–CORD–10/05 Figure 8-12 on page Name Value Name C 47 µ µ µ µ 6 100 470 µ 24) Value Name > 330 120 U4089B-P Value 330 k 220 3 ...

Page 24

... Figure 8-12. Application for Hands-free Operation U4089B-P 24 4518C–CORD–10/05 ...

Page 25

... Extended Type Number U4089B-PFNY U4089B-PFNG3Y 10. Package Information Package SSO44 Dimensions in mm 0.3 0 4518C–CORD–10/05 Package Remarks SSO44 Tubes, Pb-free SSO44 Taped and reeled, Pb-free 18.05 17.80 0.25 0.10 16 U4089B-P 9.15 8.65 7.50 7.30 2.35 10.50 10.20 technical drawings according to DIN specifications 0.25 25 ...

Page 26

... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. © Atmel Corporation 2005. All rights reserved. Atmel marks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Atmel Operations Memory ...

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