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CS4122XDWF24

P1-P3P4-P6P7-P9
© Semiconductor Components Industries, LLC, 2005
September, 2005 − Rev. 9
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 POWERSENSEt 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 SOIC−24 WB Package
• Pb−Free Packages are Available*
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
SOIC−24 WB
DWF SUFFIX
CASE 751E
1
24
CS4122 = Specific Device Code
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
MARKING DIAGRAM
1
CS4122
AWLYYWWG
24
PIN CONNECTIONS
GNDGND
GNDGND
GND
GND
GND
GND
COS−SIN+
COS+SIN−
SICS
SOSCLK
C2−V
BB
/2
C2+C1+
124
FAULTV
CC
V
BB
C1−
http://onsemi.com
See detailed ordering and shipping information in the package
dimensions section on page 4 of this data sheet.
ORDERING INFORMATION
CS4122
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2
SI
Serial to
Parallel
Shift
Register
(12 bits)
SCLK
SO
CS
FAULT
Address
Decode
+ Diag
Fault
Latch
Data
Decode/
Latch
Data
Decode/
Latch
Data
Decode/
Latch
POR
V
CC
V
BB
7 Bit
DAC
7 Bit
DAC
7 Bit
DAC
MUX
MUX
MUX
POR
Over
Temperature
2
8
8
10
7
7
7
D7
D7
D7
D8 − D9
V
TOP
V
VAR
V
BOT
V
TOP
V
VAR
V
TOP
V
VAR
OE
OC
Output
Amplifiers
SIN+
1/2 V
BB
SIN−
COS+
COS−
C1+
C1−
V
BB
/2
C2+
C2−
GND
Figure 1. Block Diagram
MAXIMUM RATINGS (Voltages are With Respect to Device Substrate)
Rating Value Unit
Supply Voltage V
BB
V
CC
−1.0 to 16.5
−1.0 to 6.0
V
V
Digital Inputs −1.0 to 6.0 V
Steady State Output Current ±100 mA
Forced Injection Current (Inputs and Supply) ±10 mA
Operating Junction Temperature (T
J
) 150 °C
Storage Temperature Range (T
STG
) −65 to 150 °C
q
JA
(Thermal Resistance Junction−to−Ambient)
55 °C/W
q
JC
(Thermal Resistance Junction−to−Case)
9 °C/W
Soldering Temperature: Reflow: (SMD styles only) (Note 1) 230 peak °C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. 60 second maximum above 183°C.
CS4122
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3
ELECTRICAL CHARACTERISTICS (−40°C ≤ T
A
≤ 105°C, 7.5 V ≤ V
BB
≤ 14 V, 4.5 V ≤ V
CC
≤ 5.5 V; unless otherwise specified.)
Characteristic Test Conditions Min Typ Max Unit
Supply Voltages and Currents
Analog Supply Current V
BB
= 14 V, no coil loads,
R
COS
, R
SIN
= 150 W
Major @ 45° (code = 080
16
),
Both Minors @ 0° (codes = 00
16
)
Major @ 0° (code = 000
16
),
Both Minors @ 56° (codes = 80
16
)
−
−
−
5.20
310
81
25
340
100
mA
mA
mA
Logic Supply Current V
CC
= 5.5 V
SCLK = 2.0 MHz
SCLK = 0 MHz, V
BB
= 0 V
−
−
1.0
0.9
2.0
1.5
mA
mA
Protection and Power−on Reset
Thermal Shutdown Drive Outputs Off − 160 − °C
Power−on Reset V
CC
Rising
V
CC
Falling
−
2.5
−
−
4.5
−
V
V
Digital Inputs and Outputs
Output High Voltage SO = I
OUT(HIGH)
= 0.8 mA V
CC
− 0.8 − − V
Output Low Voltage SO = I
OUT(LOW)
= 1.5 mA
FAULT, I
OUT(LOW)
= 2.8 mA
−
−
−
−
0.4
0.8
V
V
FAULT Leakage Current V
FAULT
= 5.0 V − − 25
mA
Input High Voltage CS, SCLK, SI 0.7 × V
CC
− − V
Input Low Voltage CS, SCLK, SI − − 0.3 × V
CC
V
Input High Current CS, SCLK, SI, V
IN
= 0.7 × V
CC
− − 1.0
mA
Input Low Current CS, SCLK, SI, V
IN
= 0.3 × V
CC
− − 1.0
mA
SCLK Frequency − − − 2.0 MHz
SCLK High Time − 175 − − ns
SCLK Low Time − 175 − − ns
SO Rise Time 0.75 V to V
CC
− 1.2 V; C
L
= 90 pF − − 100 ns
SO Fall Time V
CC
− 1.2 V to 0.75 V; C
L
= 90 pF − − 100 ns
SO Delay Time C
L
= 90 pF − − 150 ns
SI Setup Time − 75 − − ns
SI Hold Time − 75 − − ns
CS Setup Time − 0 − − ns
CS Hold Time − 75 − − ns
Analog Outputs
Output Function Accuracy Major Accuracy
Minor Accuracy
−
−
−
−
±0.75
±1.00
°
°
Output Shutdown Current,
Source and Sink
V
BB
= Max
V
BB
= Min
70
43
−
−
−
−
mA
mA
Major Coil Drive Output
Voltage
− − 0.748 × V
BB
− V
Minor Coil Drive Output
Voltage
− − 0.744 × V
BB
− V
V
BB
/2 I
DR(V
BB
/2)
= ±50 mA (0.5 × V
BB
) − 0.1 − (0.5 × V
BB
) + 0.1 V
Minimum Load Resistance T
A
= 105°C
T
A
= 25°C
T
A
= −40°C
229
171
150
−
−
−
−
−
−
W
W
W
P1-P3P4-P6P7-P9

CS4122XDWF24

Mfr. #:
Buy CS4122XDWF24
Manufacturer:
ON Semiconductor
Description:
Motor / Motion / Ignition Controllers & Drivers Air Core Gauge DRVR
Lifecycle:
New from this manufacturer.
Delivery:
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