E910.02 Datasheet, PDF (1/1 Pages) ELMOS Semiconductor AG – Analog multiplexer 8:1

BUS IC
DC/DC CONVERTER
MOTOR DRIVER IC
RIPPLE COUNTER
ÿ Analog multiplexer 8:1
FEATURES
ÿ Supply voltage range VDD 4.5V to 5.5V
ÿ Supply voltage range VS 8V to 40V
ÿ Fast buffer amplifier with 1.5V/µs driving 1nF
load capacitance
ÿ Low crosstalk in case of current-injection into
input-protection diodes
ÿ Low offset voltage < 4mV
ÿ Output voltage limitation to VDD
ÿ Buffer output with high impedance tri-state-mode
ÿ I/O compatible to standard multiplexer 4051
ÿ – 40°C to + 85°C operating temperature
ÿ SO16n package
APPLICATION
ÿ Buffered analog multiplexing
DESCRIPTION
The IC is an 8 channel analog multiplexer with a buffer amplifier.
The input signals IN0 to IN7 are fed to the multiplexer consisting
of analog transmission gates which are controlled by the digital
inputs SEL0-2. The multiplexer is designed for low crosstalk in
case of current injection into the input protection diodes.
VS is used as the positive supply voltage for the buffer and has to
be at least 2.5V higher than the maximum analog voltage to avoid
clipping or slew rate reduction of the output signal.
The buffer drives a 1nF load capacitance to avoid EMI disturbance
of the output signal. To achieve high output slewrates, this capac-
itance is used for compensation also and thus has to be applied.
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.
DRIVER IC
I/O 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
PINNING
Pin Name
1 IN4
2 IN6
3 OUT
4 IN7
5 IN5
6 ENB
7 VS
8 GND
9 SEL2
10 SEL1
11 SEL0
12 IN3
13 IN0
14 IN1
15 IN2
16 VDD
Description
Analog input 4
Analog input 6
Buffer output
Analog input 7
Analog input 5
Enable for buffer output, active low
Supply voltage for buffer amplifier
Ground
Control - input for multiplexer
Control - input for multiplexer
Control - input for multiplexer
Analog input 3
Analog input 0
Analog input 1
Analog input 2
Voltage for output voltage limitation
SENSOR IC
SENSOR INTERFACE IC
E910.02
PACKAGE
IN4
1
IN6
2
OUT
3
IN7
4
IN5
5
ENB
6
VS
7
GND
8
16
VDD
15
IN2
14
IN1
13
IN0
12
IN3
11
SEL0
10
SEL1
9
SEL2
BLOCK DIAGRAM
VBAT
VDD
IN 0
IN 1
IN 2
IN 3
IN 4
IN 5
IN 6
IN 7
64
CH 7
CH 0
8:1
Analog
MUX
VS
OUT
1nF
EN
SEL 0
SEL 1
SEL 2
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
65