
Features
Regulator
+
V
Z
C
p
D
Gnd
V
SINE
V
BIAS
C
P
+
Pwr Gnd
V
COS
S
Q
IN
F/V OUT
V
CC
V
REG
S
Q
OUT
Function
Generator
Charge
Pump
I
I
I
Single Supply Operation
On-Chip Regulation
20mA Output Drive
Capability
Package Options
20L SOIC Wide
(internally fused leads)
14L PDIP
C
20mA Air-Core Tachometer Drive Circuit
1
V
Z
V
SINE
V
BIAS
Gnd
C
P
D
C
P
+
NC
V
CC
V
COS
V
REG
S
Q
IN
S
Q
OUT
F/V
OUT
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
1
V
Z
V
SINE
V
BIAS
Gnd
C
P
D
C
P
+
NC
Pwr Gnd
V
CC
V
COS
V
REG
S
Q
IN
S
Q
OUT
F/V
OUT
CS289
Description
The CS289 is specifically designed
for use with air-core meter move-
ments. The IC has charge pump cir-
cuitry for frequency-to-voltage con-
version, a shunt regulator for stable
operation, a function generator, and
sine and cosine amplifiers. The
buffered sine and cosine outputs
will typically sink or source 20mA.
Block Diagram
Absolute Maximum Ratings
Supply Voltage (V
CC
)......................................................................................20V
Operating Temperature............................................................D40C to +100C
Junction Temperature..................................................................D40C to 150C
Storage Temperature.................................................................D65C to +150C
Lead Temperature Soldering
Wave Solder (through hole styles only)...........10 sec. max, 260C peak
Reflow (SMD styles only)............60 sec. max above 183C, 230C peak
1
Rev. 3/8/99
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: info@cherry-semi.com
Web Site: www.cherry-semi.com
A
Company
¨