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Part Number: ADC0854
Description: The ADC0852 and ADC0854 are CMOS devices that combine a versatile analog input multiplexer, voltage compara- tor, and a...
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ADC0854
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DataSheet
General Description
ADC0854 General Description
The ADC0852 and ADC0854 are CMOS devices that combine a versatile analog input multiplexer, voltage compara- tor, and an 8-bit DAC which provides the comparator's threshold voltage (VTH). The comparator provides a ''1-bit'' output as a result of a comparison between the analog input and the DAC's output. This allows for easy implementation of set-point, on-off or ''bang-bang'' control systems with several advantages over previous devices.
The ADC0854 has a 4 input multiplexer that can be software configured for single ended, pseudo-differential, and full-differential modes of operation. In addition the DAC's reference input is brought out to allow for reduction of the span. The ADC0852 has a two input multiplexer that can be configured as 2 single-ended or 1 differential input pair. The DAC reference input is internally tied to VCC.
The multiplexer and 8-bit DAC are programmed via a serial data input word. Once programmed the output is updated once each clock cycle up to a maximum clock rate of 400 kHz.
ADC0854 Maximum Ratings
Current into Va (Note 3) ...................................................15 mA
Supply Voltage, VCC (Note 3) ..............................................6.5V
Voltage
Logic and Analog Inputs................................ -0.3V to VCC a0.3V
Input Current per Pin...................................................... ± 5mA
Input Current per Package ........................................... ± 20 mA
Storage Temperature .......................................-65 to +150
Package Dissipation
at TA e 25 (Board Mount) .................................................0.8W
Lead Temp. (Soldering, 10 seconds)
Dual-In-Line Package (plastic) ............................................260
ESD Susceptibility (Note 14) ...............................................2000V
Supply Voltage, VCC (Note 3) ..............................................6.5V
Voltage
Logic and Analog Inputs................................ -0.3V to VCC a0.3V
Input Current per Pin...................................................... ± 5mA
Input Current per Package ........................................... ± 20 mA
Storage Temperature .......................................-65 to +150
Package Dissipation
at TA e 25 (Board Mount) .................................................0.8W
Lead Temp. (Soldering, 10 seconds)
Dual-In-Line Package (plastic) ............................................260
ESD Susceptibility (Note 14) ...............................................2000V
ADC0854 Features
* 2 or 4 channel multiplexer
* Differential or Single-ended input, software controlled
* Serial digital data interface
* 256 programmable reference voltage levels
* Continuous comparison after programming
* Fixed, ratiometric, or reduced span reference capability
(ADC 0854)
* Differential or Single-ended input, software controlled
* Serial digital data interface
* 256 programmable reference voltage levels
* Continuous comparison after programming
* Fixed, ratiometric, or reduced span reference capability
(ADC 0854)
ADC0854 Connection Diagram
ADC0854CCN
PDF/DataSheet Download
- Datasheet: ADC0854CCN
- File Size: 311510 KB
- Manufacturer: NSC [National Semiconductor]
- Click here to Download
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