U4089B [ATMEL]
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT; 单片集成功能手机电路
| 型号： | U4089B |
| 厂家： | 
ATMEL |
| 描述： | MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT |
| 文件： | 总25页 (文件大小：649K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Features
• Adjustable DC Characteristics
• Adjustable Transmit and Receive Gain
• Symmetrical Input of Microphone Amplifier
• Anti-clipping in Transmit Direction
• Automatic Line-loss Compensation
• Built-in Ear Protection
• DTMF and MUTE Input
• Adjustable Side Tone Suppression Independent of Sending and Receiving
Amplification
• Integrated Amplifier for Loud-hearing Operation
• Anti-clipping for Loudspeaker Amplifier
• Improved Acoustical Feedback Suppression
• Selectable Line Impedance
Monolithic
Integrated
Feature Phone
Circuit
• Voice Switch
• Supply Voltages for All Functional Blocks of a Subscriber Set
• Operation Possible from 10-mA Line Current
Benefits
• Complete System Integration of Analog Signal Processing on One Chip
• Very Few External Components
U4089B-M
Applications
• Feature Phones
• Answering Machines
• Fax Machines
• Speaker Phones
Description
The telephone circuit U4089B-M is a linear integrated circuit for use in feature phones,
answering machines and fax machines. It contains the speech circuit, side tone
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 a loudspeaker amplifier enables loud-hearing or
hands-free operation. With an anti-feedback function, acoustical feedback during loud-
hearing can be reduced significantly. The generated supply voltage is suitable for a
wide range of peripheral circuits.
Figure 1. Simple Block Diagram
Speech
circuit
Audio
amplifier
Voice
Dialer
switch
Rev. 4570A–CORD–04/03
Figure 2. Block Diagram
VL
VB
VMP
GT
STO
IMPSEL AGA IND
20 30
SENSE
10
44
32
7
6
9
13
600 ꢀ
900 ꢀ
4
MIC1
MIC
3
MIC2
VM
TXA
33
8
Power
supply
1
DTMF
Impedance
control
GND
41
TX
TTXA
ACL
Current
supply
27
IREF
AGA
control
INLDR
INLDT
TLDR
31
26
29
28
25
Acoustical
feedback
suppression
control
Transmit
mute
control
Supply
TLDT
ATAFS
11
SAO
R-
SACL
attenuation
21
23
TSACL
SAI
22
24
39
RECO
40
36
42
GSA
MUTX
GR
STI
RECIN
2
U4089B-M
4570A–CORD–04/03
U4089B-M
Pin Configuration
Figure 3. Pinning SSO44
1
2
44
43
42
41
40
39
38
37
GT
DTMF
NC
NC
3
RECIN
MIC2
MIC1
NC
4
TTXA
GR
5
6
RECO
NC
IND
7
VL
8
NC
GND
9
36
35
34
33
32
31
30
29
28
27
26
25
STI
NC
NC
VM
SENSE
10
11
VB
SAO
NC 12
13
VMP
STO
14
15
16
17
18
NC
NC
NC
NC
NC
IREF
AGA
TLDR
TLDT
INLDR
INLDT
ATAFS
MUTX
SAI
19
20
NC
IMPSEL
21
22
24
23
TSACL
GSA
3
4570A–CORD–04/03
Pin Description
Pin
Symbol Function
1
DTMF Input for DTMF signals. Also used for the answering machine and hands-free input.
MIC 2 Non-inverting input of microphone amplifier
MIC 1 Inverting input of microphone amplifier
3
4
The internal equivalent inductance of the circuit is proportional to the value of the capacitor at this pin. A resistor
connected to ground may be used to reduce the DC line voltage.
6
IND
7
8
VL
Line voltage
GND
Reference point for DC- and AC-output signals
A small resistor (fixed) connected from this pin to VL sets the slope of the DC characteristic and also affects the line-
length equalization characteristics and the line current at which the loudspeaker amplifier is switched on.
9
SENSE
10
11
13
VB
Unregulated supply voltage for peripheral circuits (voice switch); limited to typically 7 V
Output of loudspeaker amplifier
SAO
VMP
Regulated 3.3 V supply voltage for peripheral circuits. The maximum output current is 2 mA.
Control input for selection of line impedance
1) 600 ꢀ
20
IMPSEL 2) 900 ꢀ
3) Mute of second transmit stage (TXA); also used for indication of external supply (answering machine);
last chosen impedance is stored
21
22
23
TSACL Time constant of anti-clipping of speaker amplifier
Current input for setting the gain of the speaker amplifier. Adjustment characteristic is logarithmical.
For RGSA > 2 Mꢀꢁ theꢂspeaker amplifier is switched off.
GSA
SA I
Speaker amplifier input (for loudspeaker, tone ringer and hands-free use)
Three-state input of transmit mute:
1) Speech condition; inputs MIC1/MIC2 active
24
MUTX 2) DTMF condition; input DTMF active. A part of the input signal is passed to the receiving amplifier as a
confidence signal during dialing.
3) Input DTMF used for answering machine and hands-free use; receive branch is not affected.
Attenuation of acoustical feedback suppression. Maximum attenuation of the AFS circuit is set by a resistor at this
pin. Without the resistor, AFS is switched off.
25
ATAFS
26
27
28
29
INLDT Input of transmit level detector
INLDR Input of receive level detector
TLDT
TLDR
Time constant of transmit level detector
Time constant of receive level detector
Automatic gain adjustment with line current. A resistor connected from this pin to GND sets the starting point.
Max. gain change is 6 dB.
30
AGA
31
32
33
36
39
IREF
STO
VM
Internal reference current generation; RREF = 62 kꢀ; IREF = 20 µA
Side tone reduction output. Output resistance is approximately 300 ꢀ. Maximum load impedance is 10 kꢀꢃ
Reference node for microphone, earphone and loudspeaker amplifier. Supply for electret microphone (IM ? 300 µA).
Input for side-tone network
STI
RECO Output of receiving amplifier
A resistor connected from this pin to GND sets the receiving amplification of the circuit; amplifier RA1 can be
muted by applying VMP to GR
40
GR
41
42
TTXA
Time constant of anti-clipping in transmit path
RECIN Input of receiving path; input impedance is typically 80 kꢀ
A resistor from this pin to GND sets the amplification of the microphone and DTMF signals; the input amplifier can
be muted by applying VMP to GT.
44
GT
4
U4089B-M
4570A–CORD–04/03
U4089B-M
DC Line Interface and The DC line interface consists of an electronic inductance and an output stage which
charges the capacitor at VB. The value of the equivalent inductance is given by:
L = RSENSE P CIND Pꢀ(RDC PꢀR30)/(RDC + R30)
Supply-voltage
Generation
In order to improve the supply during worst-case operating conditions, the PNP current
source (IBOPT) supplies an extra amount of current to the supply voltages when the NPN
in parallel is unable to conduct current.
The U4089B-M contains a series regulator which provides a supply voltage VMP of 3.3 V
at the 2 mA suitable for a microprocessor.
Figure 4. DC Line Interface with Electronic Inductance and Generation of Regulated
and Unregulated Supply
VL
10 ꢀ
SENSE
RSENSE
IBOPT
< 5 mA
VMP
CIND
10 µF
3.3 V/
2 mA
3.3 V
+
-
+
-
47 µF
IND
R30
RDC
VB
30 kꢀ
7 V
220 µF
VOFFS
5
4570A–CORD–04/03
Figure 5. Functional Blocks for Power Supply
VB
7V
Voltage
regulator
Power
supply
VMP
VL
ES
IMPED
CONTR
LIDET
VLON
IMPSEL
MIC, DTMF
AGA, RA
TXA
TXACL
OFFSA
COMP
SAL, SA
SACL
AFS
TX MUTE
MUT REC, STBAL
RECATT
1. In speech condition, the system is supplied by the line current. If the LIDET-block
detects a line voltage above the fixed threshold (1.9 V), the internal signal VLON
is activated, thus switching on all blocks of the chip.
For line voltages below 1.9 V, the switches remain in their quiescent state as shown
in Figure 5.
OFFSACOMP disables the group listening feature (SAI, SA, SACL, AFS) below line
currents of approximately 10 mA.
2. Selecting IMPSEL = high impedance activates all switches at the ES line.
Acoustic Feedback
Suppression
Acoustical feedback from the loudspeaker to the handset microphone may cause insta-
bility in the system. The U4089B-M offers a very efficient feedback suppression circuit
which uses a modified voice switch topology. Figure 6 shows the basic system
configuration.
Two attenuators (TX ATT and RX ATT) reduce the critical loop gain by introducing an
externally adjustable amount of loss either in the transmit or in the receive path. The
sliding control in block ATT CONTR determines whether the TX or the RX signal has to
be attenuated. The overall loop gain remains constant under all operating conditions.
Selection of the active channel is made by comparison of the logarithmically com-
pressed TX and RX envelope curves.
The system configuration for group listening, which is realized in the U4089B-M, is illus-
trated in Figure 7. TXA and SAI represent the two attenuators; the logarithmic envelope
detectors are shown in a simplified way (operational amplifiers with two diodes).
6
U4089B-M
4570A–CORD–04/03
U4089B-M
Figure 6. Basic Voice-switch System
TX
attenuation
Handset
microphone
Logarithmic
Hybrid
Line
Attenuation
control
Logarithmic
Loud
speaker
RX
attenuation
Figure 7. Integration of the Acoustic Feedback-suppression Circuit Into the Speech Circuit Environment
V
B
V
L
GT
INLDT
TLDT
STO
VL
Z
L
-
+
VBG
Zint
SAO
GSA
AFS
control
Max
att.
AGA
-
+
VBG
RECIN
STO
SAI
SAI
TLDR
RECO GR
STI
INLDR
STN
7
4570A–CORD–04/03
Figure 8. Acoustic Feedback Suppression by Alternative Control of Transmit and Speaker Amplifier Gain
TLDT
TXA
SAI
RLDT
RLDR
INLDT
INLDR
AGA
AGA
IAGAFS
IATGSA
IGSA
TLDR
ATAFS
GSA
RATAFS
A detailed diagram of the AFS (Acoustic Feedback Suppression) is given in Figure 8.
Receive and transmit signals are first processed by logarithmic rectifiers in order to pro-
duce the speech envelopes at TLDT and RLDT. After amplification, a decision is made
by the differential pair of which direction should be transmitted.
The attenuation of the controlled amplifiers TXA and SAI is determined by the emitter
current IAT which is comprised of three parts:
IATAFS
IATGSA
IAGAFS
Sets maximum attenuation
Decreases the attenuation when speaker amplifier gain is reduced
Decreases the attenuation according to the loop-gain reduction caused
by the AGA function
IAT = IATAFS - IATGSA - IAGAFS
ꢁG = IAT Pꢀ0.67 dB/ꢂA
Figure 9 illustrates the principal relationship between the speaker amplifier gain (GSA)
and attenuation of AFS (ATAFS). Both parameters can be adjusted independently, but
the internal coupling between them has to be considered. The maximum GSA value to
be used is 36 dB. The shape of the characteristic is moved in the x-direction by adjust-
ing resistor RATAFS, thus changing ATAFSm. The actual value of the attenuation
(ATAFSa), however, can be determined by reading the value which belongs to the actual
gain GSAa. If the speaker amplifier gain is reduced, the attenuation of AFS is automati-
cally reduced by the same amount in order to achieve a constant loop gain. Zero
attenuation is set for speaker gains GSAꢀO GSA0 = 36 dB - ATAFSm.
8
U4089B-M
4570A–CORD–04/03
U4089B-M
Figure 9. Reducing Speaker Amplifier Gain Results in an Equal Reduction of
AFS Attenuation
ATAFS (dB)
ATAFSm
RATAFS
RATAFS
not usable
GSA (dB)
ATAFSa
GSAO
GSAa
36 dB
Operating Range of
Speaker Amplifier
The basic behavior is illustrated in Figure 10. Actual values of ILON/ILOFF vary slightly
with the adjustment of the DC characteristics and the selection of the internal line
impedance.
Figure 10. Threshold of Speaker Amplifier
SA
on
SA
off
IL
IL
on
off
IL
Figure 11. Comparator Thresholds Depend on the DC Mask and Line Impedance
7
RDC
=
A
6
5
RDC = 130 kꢀ
RDC = 68 k
ꢀ
4
3
20
10
12
14
16
18
IL (mA)
ILON at line impedance = 600 ꢀ
ILOFF at line impedance = 600 ꢀ
ILON at line impedance = 900 ꢀ
ILOFF at line impedance = 900 ꢀ
9
4570A–CORD–04/03
Absolute Maximum Ratings
Parameters
Symbol
IL
Value
140
Unit
mA
V
Line current
DC line voltage
VL
12
Junction temperature
Ambient temperature
Storage temperature
Total power dissipation, Tamb = 60LC, SSO44
Tj
125
LC
LC
LC
W
Tamb
Tstg
Ptot
-25 to +75
-55 to +150
0.9
Thermal Resistance
Parameters
Symbol
Value
Unit
Junction ambient
SSO44
RthJA
70
K/W
Electrical Characteristics
f = 1 kHz, 0 dBm = 775 mVrms, IM = 0.3 mA, IMP = 2 mA, RDC = 130 kꢀ, Tamb = 25LC, RGSA = 560 kꢀ,
Zear = 68 nF + 100 ꢀ, ZM = 68 nF, Pin 20 open, VMUTX = GND, unless otherwise specified.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
DC Characteristics
IL = 2 mA
2.4
5.0
7.5
9.4
V
V
V
V
IL = 14 mA
IL = 60 mA
IL = 100 mA
4.6
8.8
5.4
DC voltage drop over circuit
VL
10.0
Transmission Amplifier, IL = 14 mA, VMIC = 2 mV, RGT = 27 kꢀ, Unless Otherwise Specified
Adjustment range of transmit
gain
GT
GT
40
45
48
50
dB
dB
dB
RGT = 12 kꢀ
RGT = 27 kꢀ
47
39.8
49
41.8
Transmitting amplification
IL O 14 mA,
f = 300 to 3400 Hz
Frequency response
ꢄGT
M0.5
Pin 20 open (AGA),
IL = 14 to 100 mA
Gain change with current
Gain deviation
ꢄGT
ꢄGT
M0.5
M0.5
dB
dB
dB
Tamb = -10 to +60LC
CMRR of microphone
amplifier
CMRR
60
45
80
Input resistance of MIC
amplifier
RGT = 12 kꢀ
RGT = 27 kꢀ
50
75
Ri
dt
kꢀ
110
2
IL > 14 mA
VL = 700 mVrms
Distortion at line
%
IL > 19 mA, d < 5%
Maximum output voltage
V
mic = 25 mV
VLmax
1.8
3
4.2
-72
dBm
CTXA = 1 µF
Noise at line psopho-
metrically weighted
IL > 14 mA
GT = 48 dB
no
-80
dBmp
10
U4089B-M
4570A–CORD–04/03
U4089B-M
Electrical Characteristics (Continued)
f = 1 kHz, 0 dBm = 775 mVrms, IM = 0.3 mA, IMP = 2 mA, RDC = 130 kꢀ, Tamb = 25LC, RGSA = 560 kꢀ,
Zear = 68 nF + 100 ꢀ, ZM = 68 nF, Pin 20 open, VMUTX = GND, unless otherwise specified.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Anti-clipping
attacktime
release time
0.5
9
ms
ms
CTXA = 1 µF
each 3 dB overdrive
IL = 10 mA
I
MP = 1 mA
Gain at low operating current RDC = 68 kꢀ
GT
40
42.5
dB
%
Vmic = 1 mV
I
M = 300 µA
IL = 10 mA
IM = 300 µA
IMP = 1 mA
RDC = 68 kꢀ
Distortion at low operating
current
dt
5
Vmic = 10 mV
IL = 100 mA,
RAGA = 20 kꢀ
Line-loss compensation
ꢄGTI
-6.4
60
-5.8
80
-5.2
dB
dB
Mute suppression,
MIC muted (microphone
preamplifier)
IL Oꢂ14 mA
Mutx = open
GTM
Receiving Amplifier, IL = 14 mA, RGR = 62 kꢀ, Unless Otherwise Specified, VGEN = 300 mV
Adjustment range of
receiving gain
IL O 14 mA,
single-ended
GR
GR
-8
+2
dB
dB
dB
dB
RGR = 62 kꢀ
RGR = 22 kꢀ
-7.75
-7
1.5
-6.25
Receiving amplification
Amplification of DTMF signal
from DTMF IN to RECO
IL Oꢂ14 mA
GRM
ꢄGRF
1
4
7
VMUTX = VMP
IL > 14 mA,
f = 300 Hz to 3400 Hz
Frequency response
±0.5
Gain change with current
Gain deviation
IL = 14 to 100 mA
ꢄGR
ꢄGR
±0.5
±0.5
dB
dB
Tamb = -10 to +60LC
IL Oꢂ14 mA
VGEN = 11 Vrms
Ear protection
EP
1.1
Vrms
dB
MUTE suppression
DTMF operation
IL Oꢂ14 mA
ꢄGR
60
0.5
4
VMUTX = VMP
IL = 14 mA
Zear = 68 nF
Output voltage d ?ꢂ2%
Vrms
Maximum output current
d ?ꢂ2%
mA
(peak)
Zear = 100 ꢀ
Receiving noise
psophometrically weighted
Zear = 68 nF + 100 ꢀ
IL O 14 mA
ni
-80
-77
10
dBmp
ꢀ
Output resistance
Line-loss compensation
AC impedance
Output against GND
Ro
RAGA = 20 kꢀ,
IL = 100 mA
ꢄGRI
Zimp
-7.0
840
-6.0
900
-5.0
960
dB
ꢀ
11
4570A–CORD–04/03
Electrical Characteristics (Continued)
f = 1 kHz, 0 dBm = 775 mVrms, IM = 0.3 mA, IMP = 2 mA, RDC = 130 kꢀ, Tamb = 25LC, RGSA = 560 kꢀ,
Zear = 68 nF + 100 ꢀ, ZM = 68 nF, Pin 20 open, VMUTX = GND, unless otherwise specified.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
IL = 10 mA
I
MP = 1 mA
Gain at low operating current IM = 300 µA
VGEN = 560 mV
GR
-8
-7
-6
dB
RDC = 68 kꢀ
IL = 10 mA
Distortion at low operating
current
IMP = 1 mA
VGEN = 560 mV
RDC = 68 kꢀ
dR
5
%
Speaker Amplifier
Minimum line current for
operation
No AC signal
ILmin
15
22
mA
Input resistance
24
14
kꢀ
VSAI = 3 mV,
IL = 15 mA,
RGSA = 560 kꢀ
RGSA = 20 kꢀ
Gain from SAI to SAO
GSA
35.5
36.5
-3
37.5
dB
dB
Load resistance
RL = 50 ꢀ, d < 5%
Output power
VSAI = 20 mV
IL = 15 mA
IL = 20 mA
PSA
PSA
3
7
20
mW
mW
Output noise (input SAI
open) psopho-metrically
weighted
IL > 15 mA
nSA
200
±1
µVpsoph
IL = 15 mA
Tamb = -10 to +60LC
Gain deviation
ꢄGSA
dB
IL = 15 mA,
VL = 0 dBm,
Mute suppression
VSAO
-60
dBm
VSAI = 4 mV
Pin 23 open
Gain change with current
IL = 15 to 100 mA
ꢄGSA
±1
2
dB
Resistor for turning off
speaker amplifier
IL = 15 to 100 mA
RGSA
0.8
1.3
Mꢀ
IL = 15 mA
f = 300 to 3400 Hz
Gain change with frequency
ꢄGSA
±0.5
dB
Attack time of anti-clipping
Release time of anti-clipping
20 dB over drive
tr
tf
5
ms
ms
80
DTMF Amplifier Test Conditions: IMP = 2 mA, IM = 0.3 mA, VMUTX = VMP
Adjustment range of DTMF
gain
IL = 15 mA
Mute active
GD
GD
GD
40
50
dB
dB
dB
IL = 15 mA,
VDTMF = 8 mV
Mute active:
MUTX = VMP
DTMF amplification
Gain deviaton
40.7
41.7
42.7
±0.5
IL = 15 mA
Tamb = -10 to +60LC
12
U4089B-M
4570A–CORD–04/03
U4089B-M
Electrical Characteristics (Continued)
f = 1 kHz, 0 dBm = 775 mVrms, IM = 0.3 mA, IMP = 2 mA, RDC = 130 kꢀ, Tamb = 25LC, RGSA = 560 kꢀ,
Zear = 68 nF + 100 ꢀ, ZM = 68 nF, Pin 20 open, VMUTX = GND, unless otherwise specified.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
RGT = 27 kꢀ,
RGT = 15 kꢀ
60
26
180
70
300
130
Input resistance
Ri
kꢀ
IL Oꢂ15 mA
VL = 0 dBm
Distortion of DTMF signal
Gain deviation with current
dD
2
%
IL = 15 to 100 mA
ꢄGD
±0.5
dB
AFS Acousting Feedback Suppression
Range of attenuation
IL Oꢂ15 mA
0
50
dB
dB
IL Oꢂ15 mA,
IINLDT = 0 µA
Attenuation of transmit gain
ꢄGT
45
50
RATAFS = 30 kꢀ
IINLDR = 10 µA
IL Oꢂ15 mA
IINLDP = 0 µ
Attenuation of speaker
amplifier
ꢄGSA
dB
V
RATAFS = 30 kꢀ
IINLDR = 10 µ
AFS disable
IL Oꢂ15 mA
VATAFS
1.5
Supply Voltages, Vmic = 25 mV, Tamb = -10 to +60LC
IL = 14 mA,
VMP
RDC = 68 kꢀ
IMP = 2 mA
VMP
3.1
1.4
3.3
3.5
V
IL O 14 mA,
IM = 300 µA
RDC = 130 kꢀ
VM
VM
VB
3.3
7.6
V
V
IB = +20 mA,
IL = 0 mA
VB
7
MUTX Input (see Figure 20)
VMUTX = VMP
VMUTX = GND
IMUTX
IMUTX
+20
-20
+30
-30
µA
µA
Input current
VMP
0.3 V
-
Input high
Input low
VMUTX
VMUTX
V
V
Input voltage
0.3
13
4570A–CORD–04/03
U4089B-M Control
MUTX
MODE
MIC 1/2 transmit enabled receive enable
AFS = on
AGA = on
TXACL = on
0
Z
1
Speech
DTMF transmit enabled receive enable
AFS = on
AGA = on
TXACL = on
For answering machine
DTMF dialling
DTMF transmit enabled DTMF to receive enable
AFS = off
AGA = off
TXACL = off
IMPSEL
MODE
Line impedance = 600 ꢀ
TXA = on
ES = off
0
Speech
Transmit mute
Transmit mute
Speech
Line impedance = 600 ꢀ
TXA = off
ES = on
0 to Z
1 to Z
1
Line impedance = 900 ꢀ
TXA = off
ES = on
Line impedance = 900 ꢀ
TXA = on
ES = off
Logic Level
0 = < (0.3 V)
Z = > (1 V) < (VMP - 1 V) or (open input)
1 = > (VMP - 0.3 V)
AFS = Acoustical feedback-suppression control
AGA = Automatic gain adjustment
TXACL = Transmit anti-clipping control
ES = External supply
14
U4089B-M
4570A–CORD–04/03
U4089B-M
Figure 12. Typical DC Characteristic
Figure 13. Typical Adjustment Range of the Transmit Gain
GT (dB)
15
4570A–CORD–04/03
Figure 14. Typical Adjustment Range of the Receive Gain
Figure 15. Typical AGA Characteristic
16
U4089B-M
4570A–CORD–04/03
U4089B-M
Figure 16. Typical Load Characteristic of VB for a Maximum (RDC = infinity)
DC Characteristic and a 3-mW Loudspeaker Output
Figure 17. Typical Load Characteristic of VB for a Medium DC Characteristic
(RDC = 130 kꢃ) and a 3-mW Loudspeaker Output
17
4570A–CORD–04/03
Figure 18. Typical Load Characteristic of VB for a Minimum DC Characteristic
(RDC = 68 kꢃ) and a 3-mW Loudspeaker Output
18
U4089B-M
4570A–CORD–04/03
U4089B-M
Figure 19. DC Voltage Absolute
19
4570A–CORD–04/03
Figure 20. DC Voltage Current Test
20
U4089B-M
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U4089B-M
Figure 21. DC Ramps
21
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Figure 22. AC Tests
22
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Figure 23. Application for Hands-free Operation
23
4570A–CORD–04/03
Table 1. Typical Values of External Components (see Figure 23)
Name
Value
4.7 nF
10 µF
220 µF
47 µF
1 µF
Name
C16
C17
C18
C21
C23
C24
C25
C26
C27
C28
R2
Value
47 µF
10 µF
10 µF
1 µF
Name
R3
Value
>68 kꢀ
10 kꢀ
62 kꢀ
22 kꢀ
330 kꢀ
3 kꢀ
Name
R16
R17
R18
R21
R22
R23
R24
R25
R26
R29
R30
Value
1 kꢀ
C2
C3
R4
1.2 kꢀ
30 kꢀ
15 kꢀ
330 kꢀ
220 kꢀ
68 kꢀ
2 kꢀ
C4
R6
C5
R8
C7
6.8 nF
10 nF
100 nF
470 nF
33 nF
10 µF
20 kꢀ
R9
C8
100 µF
150 nF
68 nF
33 nF
100 nF
1 µF
R10
R11
R12
R13
R14
R15
C10
C11
C12
C14
C15
62 kꢀ
30 kꢀ
62 kꢀ
120 kꢀ
47 kꢀ
3.3 kꢀ
1 kꢀ
12 kꢀ
Ordering Information
Extended Type Number
Package
SSO44
SSO44
Remarks
Tubes
Taped and reeled
U4089B-MFN
U4089B-MFNG3
Package Information
9.15
8.65
Package SSO44
Dimensions in mm
18.05
17.80
7.50
7.30
2.35
0.3
0.8
0.25
0.10
0.25
10.50
10.20
16.8
44
23
technical drawings
according to DIN
specifications
1
22
24
U4089B-M
4570A–CORD–04/03
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