CS289 Datasheet, PDF (1/6 Pages) Cherry Semiconductor Corporation – 20mA Air-Core Tachometer Drive Circuit

CS289
20mA Air-Core Tachometer Drive Circuit
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.
Features
s Single Supply Operation
s On-Chip Regulation
s 20mA Output Drive
Capability
Absolute Maximum Ratings
Supply Voltage (V_CC)......................................................................................20V
Operating Temperature ............................................................Ð40¡C to +100¡C
Junction Temperature..................................................................Ð40¡C to 150¡C
Storage Temperature.................................................................Ð65¡C to +150¡C
Lead Temperature Soldering
Wave Solder (through hole styles only)...........10 sec. max, 260¡C peak
Reflow (SMD styles only)............60 sec. max above 183¡C, 230¡C peak
Block Diagram
Pwr Gnd V_CC V_COS V_REG S_QIN S_QOUT F/V OUT
Package Options
14L PDIP
V_Z 1
V_SINE
NC
V_BIAS
C_PÐ
C_P+
Gnd
Pwr Gnd
V_CC
V_COS
V_REG
S_QIN
S_QOUT
F/V_OUT
Regulator
Function
Generator
Charge
Pump
V_Z
V_SINE
V_BIAS
C_pÐ
C_P+
Gnd
20L SOIC Wide
(internally fused leads)
V_Z 1
V_SINE
V_BIAS
Gnd
V_CC
V_COS
V_REG
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
C_PÐ
C_P+
NC
S_QIN
S_QOUT
F/V_OUT
Rev. 3/8/99
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: [phone] Fax: [phone]
Email: [e-mail]
Web Site: www.cherry-semi.com
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Company
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