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