ON Semiconductor CS8190 Technical data
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CS8190
Precision Air-Core
Tach/Speedo Driver with
Return to Zero
The CS8190 is specifically designed for use with air–core meter
movements. The IC provides all the functions necessary for an analog
tachometer or speedometer. The CS8190 takes a speed sensor input
and generates sine and cosine related output signals to differentially
drive an air–core meter.
Many enhancements have been added over industry standard
tachometer drivers such as the CS289 or LM1819. The output utilizes
differential drivers which eliminates the need for a zener reference
and offers more torque. The device withstands 60 V transients which
decreases the protection circuitry required. The device is also more
precise than existing devices allowing for fewer trims and for use in a
speedometer.
Features
• Direct Sensor Input
• High Output Torque
• Low Pointer Flutter
• High Input Impedance
• Overvoltage Protection
• Return to Zero
• Internally Fused Leads in DIP–16 and SO–20L Packages
16
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DIP–16
NF SUFFIX
CASE 648
PIN CONNECTIONS AND
MARKING DIAGRAM
DIP–16
SQ
FREQ
OUT
IN
CC
CS8190ENF16
AWLYYWW
20
SO–20L
DWF SUFFIX
CASE 751D
161
CP–CP+
F/V
OUT
V
REG
GNDGND
GNDGND
SINE+COS+
SINE–COS–
BIASV
1
SO–20L
1
SQ
OUT
FREQ
IN
GND
GND
CC
A = Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
AWLYYWW
CS–8190
20
CP–CP+
F/V
V
REG
GNDGND
GND
GND
GNDGND
SIN+COS+
SIN–COS–
BIASV
OUT
ORDERING INFORMATION
Device Package Shipping
CS8190ENF16 DIP–16 25 Units/Rail
CS8190EDWF20 SO–20L
CS8190EDWFR20 SO–20L 1000 Tape & Reel
37 Units/Rail
Semiconductor Components Industries, LLC, 2001
March, 2001 – Rev . 4
1 Publication Order Number:
CS8190/D
CS8190
BIAS
CP+
SQ
FREQ
GND
GND
COS+
COS–
V
OUT
CC
F/V
OUT
Charge Pump
+
-
CP–
Input
Comp.
IN
+
-
Voltage
V
REG
Regulator
GND
V
REG
7.0 V
GND
SINE+
COS
Output
+
Func.
Gen.
+
-
+
+
-
SINE
Output
SINE–
High Voltage
Protection
Figure 1. Block Diagram
ABSOLUTE MAXIMUM RATINGS*
Rating Value Unit
Supply Voltage, V
CC
Operating Temperature –40 to +105 °C
Storage Temperature –40 to +165 °C
Junction Temperature –40 to +150 °C
ESD (Human Body Model) 4.0 kV
Lead Temperature Soldering: Wave Solder (through hole styles only) (Note 1.)
1. 10 seconds maximum.
2. 60 second maximum above 183°C.
*The maximum package power dissipation must be observed.
< 100 ms Pulse Transient
Continuous
Reflow: (SMD styles only) (Note 2.)
60
24
260 peak
230 peak
°C
°C
V
V
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CS8190
ELECTRICAL CHARACTERISTICS (–40°C ≤ T
Characteristic
≤ 85°C, 8.5 V ≤ VCC ≤ 15 V, unless otherwise specified.)
A
Test Conditions Min Typ Max Unit
Supply Voltage Section
ICC Supply Current VCC = 16 V, –40°C, No Load – 50 125 mA
VCC Normal Operation Range – 8.5 13.1 16 V
Input Comparator Section
Positive Input Threshold – 1.0 2.0 3.0 V
Input Hysteresis – 200 500 – mV
Input Bias Current (Note 3.) 0 V ≤ VIN ≤ 8.0 V – –10 –80 µA
Input Frequency Range – 0 – 20 kHz
Input Voltage Range in series with 1.0 kΩ –1.0 – V
Output V
SAT
ICC = 10 mA – 0.15 0.40 V
CC
Output Leakage VCC = 7.0 V – – 10 µA
Low VCC Disable Threshold – 7.0 8.0 8.5 V
Logic 0 Input Voltage – 1.0 – – V
Voltage Regulator Section
Output Voltage – 6.25 7.00 7.50 V
Output Load Current – – – 10 mA
Output Load Regulation 0 to 10 mA – 10 50 mV
Output Line Regulation 8.5 V ≤ V
Power Supply Rejection VCC = 13.1 V, 1.0 V
≤ 16 V – 20 150 mV
CC
1.0 kHz 34 46 – dB
P/P
Charge Pump Section
Inverting Input Voltage – 1.5 2.0 2.5 V
Input Bias Current – – 40 150 nA
V
Input Voltage – 1.5 2.0 2.5 V
BIAS
Non Invert. Input Voltage IIN = 1.0 mA – 0.7 1.1 V
Linearity (Note 4.) @ 0, 87.5, 175, 262.5, + 350 Hz –0.10 0.28 +0.70 %
F/V
Gain @ 350 Hz, CCP = 0.0033 µF,
OUT
R
= 243 kΩ
T
7.0 10 13 mV/Hz
Norton Gain, Positive IIN = 15 µA 0.9 1.0 1.1 I/I
Norton Gain, Negative IIN = 15 µA 0.9 1.0 1.1 I/I
Function Generator Section: –40C TA 85°C, VCC = 13.1 V unless otherwise noted.
Return to Zero Threshold TA = 25°C 5.2 6.0 7.0 V
Differential Drive Voltage
(V
COS+
– V
COS–
)
Differential Drive Voltage
(V
– V
SIN–
)
SIN+
Differential Drive Voltage
(V
COS+
– V
COS–
)
Differential Drive Voltage
(V
– V
SIN–
)
SIN+
8.5 V ≤ V
Θ = 0°
8.5 V ≤ V
Θ = 90°
8.5 V ≤ V
Θ = 180°
8.5 V ≤ V
Θ = 270°
CC
CC
CC
CC
≤ 16 V
≤ 16 V
≤ 16 V
≤ 16 V
5.5 6.5 7.5 V
5.5 6.5 7.5 V
–7.5 –6.5 –5.5 V
–7.5 –6.5 –5.5 V
3. Input is clamped by an internal 12 V Zener.
4. Applies to % of full scale (270°).
V
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CS8190
ELECTRICAL CHARACTERISTICS (continued) (–40°C ≤ T
≤ 85°C, 8.5 V ≤ VCC ≤ 15 V, unless otherwise specified.)
A
Characteristic UnitMaxTypMinTest Conditions
Function Generator Section: –40C TA 85°C, VCC = 13.1 V unless otherwise noted. (continued)
Differential Drive Current
8.5 V ≤ V
≤ 16 V – 33 42 mA
CC
Zero Hertz Output Angle – –1.5 0 1.5 deg
Function Generator Error (Note 5.)
Reference Figures 2, 3, 4, 5
VCC = 13.1 V
Θ = 0° to 305°
–2.0 0 +2.0 deg
Function Generator Error 13.1 V ≤ VCC ≤ 16 V –2.5 0 +2.5 deg
Function Generator Error 13.1 V ≤ VCC ≤ 11 V –1.0 0 +1.0 deg
Function Generator Error 13.1 V ≤ VCC ≤ 9.0 V –3.0 0 +3.0 deg
Function Generator Error 25°C ≤ TA ≤ 80°C –3.0 0 +3.0 deg
Function Generator Error 25°C ≤ TA ≤ 105°C –5.5 0 +5.5 deg
Function Generator Error –40°C ≤ TA ≤ 25°C –3.0 0 +3.0 deg
Function Generator Gain TA = 25°C, Θ vs F/V
, 60 77 95 °/V
OUT
5. Deviation from nominal per Table 1 after calibration at 0 ° and 270°.
PIN FUNCTION DESCRIPTION
PACKAGE PIN #
DIP–16
1 1 CP+ Positive input to charge pump.
2 2 SQ
3 3 FREQ
4, 5, 12, 13 4–7, 14–17 GND Ground Connections.
6 8 COS+ Positive cosine output signal.
7 9 COS– Negative cosine output signal.
8 10 V
9 11 BIAS Test point or zero adjustment.
10 12 SIN– Negative sine output signal.
11 13 SIN+ Positive sine output signal.
14 18 V
15 19 F/V
16 20 CP– Negative input to charge pump.
SO–20L
PIN SYMBOL FUNCTION
OUT
IN
CC
REG
OUT
Buffered square wave output signal.
Speed or RPM input signal.
Ignition or battery supply voltage.
Voltage regulator output.
Output voltage proportional to input signal frequency.
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