Intersil HIP9020
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.| Part No. | HIP9020 |
|---|---|
| Datasheet | HIP9020 Download |
| Manufacturer |  Intersil |
| Description | Programmable Quad Buffer with Pre and Post Scaler Dividers |
| Buy | Stock & Price |
DESCRIPTION
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 40kΩ 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.
