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HIP9020
October 1993
Programmable Quad Buffer with Pre and Post Scaler Dividers
Description
The HIP9020 is a Vehicle Speed Sensor (VSS) Buffer IC. It receives sinusoidal vehicle speed information from a speedometer signal source. The signal is amplified and squared before frequency processing is done. The circuit provides pin programmable integer prescaler and postscaler dividers to scale the output frequencies. The prescaler divider output of the frequency doubler is mode selected for 1 and 6 through 11. The postscaler mode is selected to the Output 3 with a divide by 1 or 2. The four VOX outputs are open collector drivers. Speed Sensor Input (SSI) - When current limited with a 40k source impedance from the vehicle speed sensor, the SSI input is capable of functioning over a wide range of input signal. The limiter and squaring action is derived from the zero crossing of the input signal. The signal is converted into a square wave with a controlled hysteresis squaring amplifier. Power Supply - The power supply pin 2 input is intended to operate from a 5.0V 0.3V source. The internal reference sources are derived from a temperature stable bandgap; including an optional 5.7V shunt regulator which may be used as shown in Figure 2. Output Drivers - Each output driver is an open NPN collector with a zener clamp level of typically 35V and short circuit current limiting. Each output is capable of sinking 15mA of current.
Features
* Sine Wave Speedometer Input * Input Limiting . . . . . . . . . . . 0.25V to 100V (with 40k) * Over Voltage Protection * Current Limiting * Programmable Prescaler 1, 6 - 11 * Post Scaler Frequency Divide by 1 or 2 * Drivers with 15mA/24V Capability * Outputs 4 Separate Square Waves * Internal Regulator and Bias Source * 0kHz to 6kHz Input Signal Range * -40oC to +125oC Operating Temperature Range
Applications
* Prescaler * Buffer/Limiter * Signal Interface * Automotive Speedometer * Automotive Speed Control * Automotive Tachometer
Ordering Information
PART NUMBER HIP9020AP HIP9020AB TEMPERATURE RANGE -40oC -40oC to to +125oC +125oC PACKAGE 14 Lead Plastic DIP 20 Lead Plastic SOIC (W)
Pinouts
HIP9020 (PDIP) TOP VIEW
GND 1 VCC 2 14 VO1 13 VO2 12 VO3 11 VO4 10 PRSS-A 9 PRSS-B 8 PRSS-C GND VCC NC POSS SSI BUF NC NC PRSO POSS 3 SSI 4 BUF 5 PRSO 6 POSI 7
HIP9020 (SOIC) TOP VIEW
1 2 3 4 5 6 7 8 9 20 VO1 19 NC 18 NC 17 VO2 16 VO3 15 VO4 14 PRSS-A 13 NC 12 PRSS-B 11 PRSS-C
POSI 10
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. http://www.intersil.com or 407-727-9207 | Copyright (c) Intersil Corporation 1999
File Number
2790.2
10-54
HIP9020 Programmable Quad Buffer Functional Block Diagram
BUF (BUFFER OUTPUT) 5 6
BUFFER 4 SSI 5 LIMITER SQ. AMP WITHHYS. FREQ DOUBLER
PRSS (PRESCALER SELECT) A B C 14 12 11 10 9 8 6 9 PRSO
(SPEED SENSOR INPUT)
PRESCALER DIV-BY 1 AND 6 - 11
(PRESCALER OUTPUT) 14 20 VO1 13 17 12 VO2 OUTPUTS VO3
DRIVER (V, IPROT) 7 POSI 10 DIV BY 2 DIV BY 2 Q1 Q1 DRIVER (V, IPROT)
(POST SCALER INPUT)
DRIVER (V, IPROT) VOLT. REG. & CURRENT SOURCE Q4 1 GND 1 2 2 VCC 4 POSS (POST SCALER SELECT) 30V CIRCLED NUMBERS ARE 20 LEAD SOP PACKAGE 3 DRIVER (V, I PROT)
16 11 15
VO4
VOX EACH OUTPUT PROTECTED BY A COLLECTOR-TO-BASE ZENER DIODE CLAMP
20
LOGIC SELECT FOR INPUT (SSI) TO OUTPUT (VOX) DIV-BY NUMBER VO1, VO2, VO3 (POSS HIGH) DIV-BY 2 12 14 16 18 20 22 VO4 (POSS HIGH) DIV-BY 1 6 7 8 9 10 11 VO1, VO2 (POSS LOW) DIV-BY 2 12 14 16 18 20 22 VO3, VO4 (POSS LOW) DIV-BY 1 6 7 8 9 10 11
PRSS-A 0 0 0 0 1 1 1
PRSS-B 0 0 1 1 0 0 1
PRSS-C 0 1 0 1 0 1 0
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Specifications HIP9020
Absolute Maximum Ratings
Supply Voltage to Pin 2, VCC (Shunt Regulator) . . . . . +24VDC Max through 300 and a Series Diode (1N4005 or Equiv.) or +5.3V Max Direct Voltage Supply Source to VCC Output Voltage (Sustained) to V01,V02,V03,V04 . . . . . . . . . . +24V Output Load Current (Sink) . . . . . . . . . . . . . . . . . . . . . . . . . +15mA Input Voltage (Through 40k, See Figure 1) . . . . . . . . . . . . . 100V
Thermal Information
Thermal Resistance JA Plastic DIP and SOIC Package . . . . . . . . . . . . . . . . . . . . . 90oC/W Maximum Package Power Dissipation up to +85oC . . . . . . . 720mW Derate above 85oC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.1mW/oC Operating Temperature Range . . . . . . . . . . . . . . . . -40oC to +125oC Storage Temperature Range . . . . . . . . . . . . . . . . . -65oC to +150oC Maximum Junction Temperature. . . . . . . . . . . . . . . . . . . . . . +150oC Lead Temperature (Soldering 10s) . . . . . . . . . . . . . . . . . . . . +265oC
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Electrical Specifications
PARAMETERS Power Supply (VCC) Supply Current
TA = -40oC to +125oC, VCC = 5V 0.3V, Unless Otherwise Specified SYMBOL TEST CONDITIONS MIN MAX UNITS
ICC
-
12
mA
SSI Input (Test Point - T.P.A., See Figure 1) Max. Operating Frequency Input Signal Range Input Hysteresis Input Bias Current fS(MAX) 40k Source, 0.01F Input Shunt 40k Source, 0.01F Input Shunt 40k Source, 0.01F Input Shunt 40k Source, 0.01F Input Shunt 0.25 0.15 -0.5 6 100 0.45 +0.5 kHz V V A
Other Inputs (PRSS, POSS, POSI - See Function Block Diagram) Input Low Voltage Input High Voltage Input Current High Input Current Low PRSO Output Output Voltage Low Output Voltage High Driver Outputs (V01, V02, V03, V04) Output Clamp Voltage Output Current Limit Output Leakage Output Saturation Voltage VSAT ICC = 1mA ISC Current Pulsed VOUT = 24V IOUT = 15mA IOUT = 1mA
VBATT T.P.A. TYP. 5.7V 0.01F VCC SSI 40K PRSO POSI A BUF OPTIONAL OUTPUT GND B C POSS PRESCALER SELECT INPUTS VO1 VO2 VO3 VO4 1K 1N4005 300 SPEED SENSOR INPUT OUTPUT TO SPEEDOMETER ODOMETER, SPEED CONTROL, ETC. OUTPUTS (OPEN NPN COLLECTORS) TA = +25oC 25 OUTPUT CURRENT, IOX (mA) DRIVE LIMITED CURRENT OUTPUT SATURATED OUTPUT "ON" CHARAC.
VIL VIH IIH IIL VCC = VIN = 4.7V VCC = 5.3; VIN = 0.4V
3.5 -10
1.5 10 -
V V A A
VOL VOH
VCC = 5V VCC = 5V
4.6
0.4 -
V V
24 15 -
45 30 30 1 0.4
V mA A V V
20
15
10
5
0 0 0.1 0.2 0.3 0.4 0.5 0.6 OUTPUT VOLTAGE VOX WITH VCC = 5 V, VSAT (V)
FIGURE 1. TYPICAL AUTOMOTIVE APPLICATION CIRCUIT
FIGURE 2. TYPICAL OUTPUT DRIVER SATURATED "ON" CHARACTERISTIC
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HIP9020
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Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
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