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CS4122XDWF24 Folha de dados(PDF) 1 Page - ON Semiconductor

Nome de Peças CS4122XDWF24
Descrição Electrónicos  Triple Air-Core Gauge Driver with Serial Input Bus
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Fabricante Electrônico  ONSEMI [ON Semiconductor]
Página de início  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2004
May, 2004 − Rev. 8
1
Publication Order Number:
CS4122/D
CS4122
Triple Air−Core Gauge
Driver with Serial Input Bus
The CS4122 converts digital data from a microprocessor to
complementary DC outputs and drives air−core meter movements for
vehicle instrument panels. It is optimized for one 360
° gauge and two
112
° gauges. The digital data controls the voltage applied to the
quadrature coils of the meters with a 0.35
° resolution for the major
(360
°) gauge and 0.44° resolution for the minor (112°) gauges. The
accuracy is
±0.75° for the major and ±1.00° for the minors. The
interface from the microcontroller is by a SPI compatible serial
connection using up to a 2.0 MHz shift clock rate.
The digital code is shifted into the appropriate DAC and
multiplexer. These two blocks provide a tangential conversion
function to change the digital data into the appropriate DC coil
voltage. The major gauge driver can position a pointer anywhere
within a 360
° circle while the minor gauge drivers are limited to an arc
of 112.2
°.
The output buffers are capable of 70 mA per coil and are protected
against output short circuit conditions. A thermal protection circuit
limits the junction temperature to approximately 160
°C.
An open−drain fault output goes low when any of the outputs are
shorted or the device is in a thermal shutdown state. This ASIC is
designed on POWERSENSE
™ 3.0.
Features
Serial Input Bus
2.0 MHz Operating Frequency
Independently Addressable Gauges
Tangential Drive Algorithm
70 mA Drive Circuits
0.75° Major Accuracy
Power−On−Reset
Protection Features
Short Circuit
Overtemperature
Internally Fused Leads in SO−24L Package
SO−24L
DWF SUFFIX
CASE 751E
1
24
A
= Assembly Location
WL, L
= Wafer Lot
YY, Y
= Year
WW, W = Work Week
MARKING
DIAGRAM
1
CS4122
AWLYYWW
24
PIN CONNECTIONS
GND
GND
GND
GND
GND
GND
GND
GND
COS−
SIN+
COS+
SIN−
SI
CS
SO
SCLK
C2−
VBB/2
C2+
C1+
124
FAULT
VCC
VBB
C1−
Device
Package
Shipping
ORDERING INFORMATION
CS4122XDWF24
SO−24L
31 Units/Rail
CS4122XDWFR24
SO−24L
1000 Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
http://onsemi.com


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