HIP9020
Programmable Quad Buffer with
Pre and Post Scaler Dividers
October 1993
Features
Description
• Sine Wave Speedometer Input
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.
• Input Limiting . . . . . . . . . . . ±0.25V to ±100V (with 40kΩ)
• 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
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.
Applications
• Prescaler
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.
• Buffer/Limiter
• Signal Interface
• Automotive Speedometer
• Automotive Speed Control
• Automotive Tachometer
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.
Ordering Information
PART
NUMBER
TEMPERATURE
RANGE
PACKAGE
o
o
HIP9020AP
HIP9020AB
-40 C to +125 C
14 Lead Plastic DIP
20 Lead Plastic SOIC (W)
o
o
-40 C to +125 C
Pinouts
HIP9020 (PDIP)
TOP VIEW
HIP9020 (SOIC)
TOP VIEW
VO1
NC
1
2
GND
VCC
NC
20
19
18
17
16
15
14
13
12
11
GND
VCC
1
2
3
4
5
6
7
14 VO1
13 VO2
12 VO3
11 VO4
NC
3
POSS
SSI
VO2
POSS
SSI
4
VO3
VO4
5
BUF
NC
6
PRSS–A
PRSS–B
PRSS–C
BUF
10
9
PRSS–A
NC
7
PRSO
POSI
NC
8
8
PRSO
PRSS–B
PRSS–C
9
10
POSI
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
File Number 2790.2
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 199190-54