ELMOS E910.02

BUS IC
DC/DC CONVERTER
MOTOR DRIVER IC
RIPPLE COUNTER
DRIVER IC
I/O IC
SENSOR IC
SENSOR INTERFACE IC
ÿ Analog multiplexer 8:1
Contact monitor 8 * to GND, par. out
Contact monitor 8 * to VBAT, par. out
Contact monitor 2 * 4, adj., par. out
Contact monitor 2 * 4, par. out
Non volatile contact monitor
Contact monitor 16 *, ser. out
ÿ Analog multiplexer 8:1
FEATURES
E910.02
DESCRIPTION
PINNING
ÿ
Supply voltage range VDD 4.5V to 5.5V
The IC is an 8 channel analog multiplexer with a buffer amplifier.
ÿ
Supply voltage range VS 8V to 40V
The input signals IN0 to IN7 are fed to the multiplexer consisting
ÿ
Fast buffer amplifier with 1.5V/µs driving 1nF
of analog transmission gates which are controlled by the digital
load capacitance
inputs SEL0-2. The multiplexer is designed for low crosstalk in
Low crosstalk in case of current-injection into
case of current injection into the input protection diodes.
ÿ
input-protection diodes
ÿ
Low offset voltage < 4mV
VS is used as the positive supply voltage for the buffer and has to
ÿ
Output voltage limitation to VDD
be at least 2.5V higher than the maximum analog voltage to avoid
ÿ
Buffer output with high impedance tri-state-mode
clipping or slew rate reduction of the output signal.
ÿ
I/O compatible to standard multiplexer 4051
ÿ
– 40°C to + 85°C operating temperature
The buffer drives a 1nF load capacitance to avoid EMI disturbance
ÿ
SO16n package
of the output signal. To achieve high output slewrates, this capacitance is used for compensation also and thus has to be applied.
APPLICATION
ÿ
Buffered analog multiplexing
A high level on pin ENB disables the output buffer and switches it
into high impedance mode. This allows multiple IC outputs to be
connected in parallel. Additionally the VDD current consumption
is reduced in tristate mode.
BLOCK DIAGRAM
PACKAGE
Pin
Name
Description
1
IN4
Analog input 4
IN4
1
16
2
IN6
Analog input 6
IN6
2
15
3
OUT
Buffer output
OUT
3
14
4
IN7
Analog input 7
IN7
4
13
IN5
5
12
5
IN5
Analog input 5
ENB
6
11
6
ENB
Enable for buffer output, active low
VS
7
10
GND
8
9
7
VS
Supply voltage for buffer amplifier
8
GND
Ground
9
SEL2
Control - input for multiplexer
10
SEL1
Control - input for multiplexer
11
SEL0
Control - input for multiplexer
12
IN3
Analog input 3
13
IN0
Analog input 0
14
IN1
Analog input 1
15
IN2
Analog input 2
16
VDD
Voltage for output voltage limitation
VDD
IN2
IN1
IN0
IN3
SEL0
SEL1
SEL2
VBAT
VS
VDD
CH7
CH0
IN0
IN1
IN2
IN3
8:1
Analog
MUX
OUT
1nF
IN4
IN5
EN
IN6
IN7
SEL0
SEL1
SEL2
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Note ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any
circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication
has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of
the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications.
Copyright © 2005 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited.
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elmos product catalog june 2005
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