CS289 Datasheet, PDF (1/8 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 ............................................................–40°C to +100°C
Junction Temperature..................................................................–40°C to 150°C
Storage Temperature.................................................................–65°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_P–
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_p–
C_P+
Gnd
20L SOIC Wide
V_Z 1
V_SINE
V_BIAS
Gnd
Gnd
Gnd
Gnd
C_P–
C_P+
NC
V_CC
V_COS
V_REG
Gnd
Gnd
Gnd
Gnd
S_QIN
S_QOUT
F/V_OUT
December, 2001 - Rev. 4
ON Semiconductor
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885–3600 Fax: (401)885–5786
N. American Technical Support: 800-282-9855
Web Site: www.onsemi.com
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