Package Pin Description: continued
PIN SYMBOL
PACKAGE PIN #
FUNCTION
20L SO
14L PDIP
12
13
18
19
20
9
SQOUT
SQIN
VREG
VCOS
VCC
Buffered square wave output signal.
Speed or RPM input signal.
Voltage regulator output.
Cosine output signal.
Supply voltage.
Power Ground connection.
10
11
12
13
14
Pwr Gnd
Note 1: Vsine measured Vsine to VZ. VCOS measured VCOS to VZ. All other voltages specified are measured to ground.
Note 2: Max PWR dissipation ≤VCC X ICC - (V2 Isine + V12 ICOS).
Typical Performance Characteristics
Charge Pump Output Voltage
Relationship of EΘ, Θ and Frequency
Output Angle in Polar Form
7.1
6
+
VP COS Θ
COSINE
OUTPUT
5
Θ
VP SIN Θ
4
–
+
3
SINE OUTPUT
V
Z
2.1
F/V
OUT
= 2.0V + FREQ X C X R X V
REG
T
T
0
45˚
90˚ 135˚ 180˚ 225˚ 270˚
–
Frequency/Output Angle (°)
Function Generator Output Voltage
2.1 3.8 5.45
7.1
4.5
3.5
VSINE
2.5
4.5V
VCOS
1.5
VZ
-1.5
-2.5
-3.5
-4.5
4.5V
0
45˚
90˚ 135˚ 180˚ 225˚ 270˚
Tachometer Angular Deflection (°)
3
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
