IL8190 IKSEMICON | Alldatasheet
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Technical content
December, 2012, Rev. 02 PRECISION AIR - CORE TACH / SPEEDO DRIVER WITH RETURN TO ZERO
DESCRIPTION
The IL8190 is specifically designed for use with air – core meter movements. The IC provid es all the functions necessary for an analog tachometer or speedometer. The IL8190 takes a speed sensor input and generates sine and cosine related output signals to differentially drive an air–core meter.
FEATURES
Direct Sensor Input High Output Torque Low Pointer Flutter High Input Impedance Overvoltage Protection Return to Zero PIN ASSIGNMENT DIP-16 SOP-20 IL8190
ORDERING INFORMATION
TA = -40 to 105 C Device Operating Temperature Range Package Packing IL8190N TA = -40 to 105 C DIP-16 Tube IL8190DW SOP-20 Tube IL8190DWT SOP-20 T & R
December, 2012, Rev. 02 ABSOLUTE MAXIMUM RATINGS* Symbol Parameter Value Unit VCC Supply Voltage 100 ms Pulse Transient 60 V Continuous 24 Topr Operating Temperature -40 to +105 C TJ Junction Temperature -40 to +150 °C Tstg Storage Temperature -60 to +165 °C TL Lead Temperature Soldering: Wave Solder (through hole styles only) (Note) 260 peak C ESD (Human Body Model) 4.0 kV Note: 10 seconds maximum. *The maximum package power dissipation must be observed. ** Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. BLOCK DIAGRAM Churge Pump Input Comp. Voltage Regulator V 7.0 V REG + Func. Gen. High Voltage Protection COS Output COS+ COS- GND GND FREQIN VCC VOUT/F VREG GND GND SIN+ SIN- CP- SQOUT CP+ BIAS SINE Output
December, 2012, Rev. 02 PIN DISCRIPTIONS Pin No. Symbol Function DIP-16 SOP-20 1 1 CP+ Positive input to charge pump 2 2 SQOUT Buffered square wave output signal 3 3 FREQIN Speed or RPM input signal 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 VCC Ignition or battery supply voltage 9 11 BIAS Test point or zero adjustment 10 12 SIN– Negative sine output signal 11 13 SIN+ Positive sine output signal 14 18 VREG Voltage regulator output 15 19 VOUT/F Output voltage proportional to input signal frequency 16 20 CP– Negative input to charge pump
December, 2012, Rev. 02
ELECTRICAL CHARACTERISTICS
(-40°C ≤ TA ≤ 85°C, 8.5 V ≤ VCC ≤ 16 V, unless otherwise specified) Symbol Parameter Test Condition Min Typ Max Unit Supply Voltage Section ICC Supply Current VCC = 16 V, No Load 66 125 mA VCC Normal Operation Range 8.5 13.1 16 V Input Comparator Section VТН Positive Input Threshold 1.0 2.1 3.0 V VH Input Hysteresis 200 470 – mV IIB1 Input Bias Current (Note 1) 0 V ≤ VIN ≤ 8.0 V – -4 -80 A FIN Input Frequency Range 0 - 20 kHz VIN Input Voltage Range in series with1.0 k -1.0 - VCC V VSAT Output VSAT IO = 10 mA – 0.10 0.40 V ISING Output Leakage VO = 7.0 V – 0.02 10 A VCC-TH Low VCC Disable Threshold 7.0 8.0 8.5 V VL Logic 0 Input Voltage 1.0 1.6 – V Voltage Regulator Section VREF Output Voltage 6.25 7.00 7.50 V IO Output Load Current - - 10 mA VREF-LOAD Output Load Regulation 0 to 10 mA – 4 50 mV VREF-LINE Output Line Regulation 8.5 V ≤ VCC ≤ 16 V – 30 150 mV PRS Power Supply Rejection VCC = 13.1 V, 1.0 VP/P 1.0 kHz 34 46 – dB Charge Pump Section UINV Inverting Input Voltage 1.5 2.1 2.5 V IIB2 Input Bias Current – 35 150 nA VBIAS VBIAS Input Voltage 1.5 2.1 2.5 V UNINV Non Invert. Input Voltage IIN = 1.0 mA – 0.6 1.1 V LK Linearity (Note 2) @ 0; 87.5; 175; 262.5; K VOUT/F Gain @ 350 Hz, CCP = 0.0033 F, RT = 243 k 7.0 11 13 mV/H z GN+ Norton Gain, Positive IIN = 15 A 0.9 1.0 1.1 GN- Norton Gain, Negative IIN = 15 A 0.9 1.0 1.1
December, 2012, Rev. 02 ELECTRICAL CHARACTERISTICS (continued) (-40°C ≤ TA ≤ 85°C, 8.5 V ≤ VCC ≤ 16 V, unless otherwise specified) Symbol Parameter Test Condition Min Typ Max Unit Function Generator Section: –40°C ≤ TA ≤ 85°C, VCC = 13.1 V unless otherwise noted VCC-TH1 Return to Zero Threshold TA = 25°C 5.2 6.0 7.0 V V(COS+-COS-) Differential Drive Voltage (VCOS+ – VCOS–) 8.5 V ≤ VCC ≤ 16 V, = 0° 5.5 6.5 7.5 V V (SIN+-SIN-) Differential Drive Voltage V (COS+-COS-) Differential Drive Voltage (VCOS+ – VCOS–)
8.5 V ≤ VCC ≤ 16 V,
= 180° –7.5 -6.5 –5.5 V V (SIN+-SIN-) Differential Drive Voltage (VSIN+ – VSIN–) = 270° –7.5 -6.5 –5.5 V IOUT Differential Drive Current 8.5 V ≤ VCC ≤ 16 V – 33 42 mA Zero Hertz Output Angle -1.5 0 1.5 deg Function Generator Error (Note 3) Reference Figures 1, 2, 3, 4 VCC = 13.1 V 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 /V Function Generator Gain TA = 25°C, vs VOUT/F 60 77 95 °/V Notes: 1. Input is clamped by an internal 12 V Zener. 2. Applies to % of full scale (270°). 3. Deviation from nominal per Table 1 after calibration at 0° and 270°.
Table 1. Function Generator Output Nominal Angle vs. Ideal Angle Note: Temperature, voltage and nonlinearity not included.
to differentially drive the meter coils. on–chip amplifier and function generator circuitry. advantage is a higher torque output for the pointer. Figure 6. Partial Schematic of Input and Charge Pump
Figure 7. Timing Diagram of FREQIN and ICP the ti me constant formed by R T and C4. unacceptable for many applications. meter coil moves the needle to the 0 position. needle moves towards 0 as opposed to 360 .
0.47 F+C4
- C2 (> 2000 F) is needed if return to zero function is required.
- The product of C4 and RT have a direct effect on gain and therefore directly affect temperature
- The IC must be protected from transients above 60 V and reverse battery conditions.
- Additional filtering on the FREQIN lead may be required.
- Gauge coil connections to the IC must be kept as short as possible (≤ 3.0 inch) for best pointer
Figure 8. Speedometer or Tachometer Application
- C2 = 10 F with CS8441 application.
- The product of C4 and RT have a direct effect on gain and therefore directly affect temperature
- The IC must be protected from transients above 60 V and reverse battery conditions.
- Additional filtering on the FREQIN lead may be required.
- Gauge coil connections to the IC must be kept as short as possible (≤ 3.0 inch) for best pointer stability.
Figure 11. Speedometer With Odometer or Tachometer Application
December, 2012, Rev. 02 PACKAGE DIMENSIONS