|
|
PDF CS289 Data sheet ( Hoja de datos )
| Número de pieza | CS289 | |
| Descripción | 20mA Air-Core Tachometer Drive Circuit | |
| Fabricantes | Cherry Semiconductor Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de CS289 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
|
No Preview Available !
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 (VCC)......................................................................................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 VCC VCOS VREG SQIN SQOUT F/V OUT
Package Options
14L PDIP
VZ
VSINE
NC
1
VBIAS
CPÐ
CP+
Gnd
Pwr Gnd
VCC
VCOS
VREG
SQIN
SQOUT
F/VOUT
Function
Generator
Regulator
Charge
Pump
Ð+
VZ VSINE
VBIAS CpÐ CP+ Gnd
20L SOIC Wide
(internally fused leads)
VZ 1
VSINE
VBIAS
Gnd
VCC
VCOS
VREG
Gnd
Gnd Gnd
Gnd Gnd
Gnd Gnd
CPÐ
CP+
NC
SQIN
SQOUT
F/VOUT
Rev. 3/8/99
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: [email protected]
Web Site: www.cherry-semi.com
1
A Company
¨
1 page  
Tachometer Application
RPM x # OF CYL.= Frequency
60 2
VF/VOUT = 2.1 + Frequency x CT x RT (VREG -0 .7)
The above equations were used in calculating the follow-
ing values, where VF/VOUT = 7.1V at =270¡ and CT = 0.01 F.
4 cylinder: Freq = 200Hz, RT = 320k½
6 cylinder: Freq = 300Hz, RT = 220k½
8 cylinder: Freq = 400Hz, RT = 150k½
Typical values shown above apply to a nominal value of
VREG of 8.5 volts. It must be realized that trimming of RT
will be necessary to compensate for variations in regula-
tor voltage from one unit to another.
An alternative to this adjustment is to replace R2 with a
potentiometer, as shown in Figure 2.
Partial schematic shown in Figure 3 represents one met-
hod for use with DC applications instead of frequency.
TRIM
10kW
IOUT/EQ
RT CP
1kW
Figure 2: Alternate Trimming Method
CT
RT CP
0.7V
IIN
Figure 3: DC Application
2.1V
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet CS289.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| CS2841B | Automotive Current Mode PWM Control Circuit | Cherry Semiconductor Corporation |
| CS2841B | Automotive Current Mode PWM Control Circuit |  ON Semiconductor |
| CS2842A | Off-Line Current Mode PWM Control Circuit with Undervoltage Lockout | Cherry Semiconductor Corporation |
| CS2842A | (CS2842A / CS2843A) Off-Line Current Mode PWM Control Circuit | ON Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |