 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
CS4172XDWF16 Datasheet(PDF) 1 Page - Cherry Semiconductor Corporation |
|
||||||||||||||||||||||||||||||
CS4172XDWF16 Datasheet(HTML) 1 Page - Cherry Semiconductor Corporation |
|
|
1 / 6 page  1 Features Output Amplifiers Gnd SCLK SI COS Ð COS + SIN Ð SIN + VBB VCC POR Serial to Parallel Shift Register POR OC 7 Bit DAC SO D0 Ð D6 VTOP VVAR MUX OE CS VBAT FAULT Latch LOGIC ST RS S D7 Ð D9 s Serial Input Bus s 2 MHz Operating Frequency s Tangential Drive Algorithm s 80mA Drive Circuits s 0.5¡ Accuracy (Typ.) s Power-On-Reset s Protection Features Output Short Circuit Overtemperature Package Options Single Air-Core Gauge Driver CS4172 Description The CS4172 is a monolithic BiCMOS integrated circuit used to translate a digital 10-bit word from a micropro- cessor/microcontroller to complemen- tary DC outputs. The DC outputs drive an air-core meter commonly used in vehicle instrument panels. The 10 bits of data are used to linearly con- trol the quadrature coils of the meter directly with a 0.35¡ resolution and ±1.0¡ accuracy over the full 360¡ range of the gauge. The interface from the microcontroller is by a Serial Periph- eral Interface (SPI) compatible serial connection using up to a 2MHz shift clock rate. The digital code, which is directly pro- portional to the desired gauge pointer deflection, is shifted into a DAC and multiplexer. These two blocks provide a tangential conversion function to change the digital data into the appro- priate DC coil voltage for the angle demanded. The tangential algorithm creates approximately 40% more torque in the meter movement than does a sin-cos algorithm at 45¡, 135¡, 225¡, and 315¡ angles. This increased torque reduces the error due to pointer droop at these critical angles. Each output buffer is capable of sup- plying up to 80mA per coil and are controlled by a common enable pin. When OE is low the output buffers are turned off but the logic portion of the chip remains powered and continues to operate normally. The Serial Gauge Driver is self-protect- ed against output short circuit condi- tions. The output drivers are disabled anytime the on-chip protection circuit- ry detects a short circuit condition. The outputs remain off until a falling edge is presented on CS. If the short circuit is still present the output drivers auto- matically disable themselves again. A thermal protection circuit limits the junction temperature to approximately 160¡C for conditions of high supply voltage and high ambient temperature. The status pin (ST) reflects the state of the outputs and is low whenever the outputs are disabled. Block Diagram 16 Lead PDIP SIN- SIN+ Gnd VBB Gnd NC SO SI VCC COS+ COS- CS SCLK OE 1 Gnd ST SIN- SIN+ Gnd VBB Gnd Gnd SO SI VCC COS+ COS- CS SCLK OE 1 Gnd ST 16 Lead SO Wide (internally fused leads) Rev. 4/19/99 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 ¨ |
Similar Part No. - CS4172XDWF16 |
|
Similar Description - CS4172XDWF16 |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
