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ADC0852CCN 数据表(PDF) 1 Page - National Semiconductor (TI) |
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ADC0852CCN 数据表(HTML) 1 Page - National Semiconductor (TI) |
1 / 20 page TLH5521 April 1995 ADC0852ADC0854 Multiplexed Comparator with 8-Bit Reference Divider General Description The ADC0852 and ADC0854 are CMOS devices that com- bine 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-dif- ferential modes of operation In addition the DAC’s refer- ence input is brought out to allow for reduction of the span The ADC0852 has a two input multiplexer that can be con- figured 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 Features Y 2 or 4 channel multiplexer Y Differential or Single-ended input software controlled Y Serial digital data interface Y 256 programmable reference voltage levels Y Continuous comparison after programming Y Fixed ratiometric or reduced span reference capability (ADC 0854) Key Specifications Y Accuracy g LSB or g 1 LSB of Reference (02%) Y Single 5V power supply Y Low Power 15 mW TLH5521 – 1 FIGURE 1 ADC0854 Simplified Block Diagram (ADC0852 has 2 input channels COM tied to GND VREF tied to VCC Va omitted and one GND connection) 2 Channel and 4 Channel Pin Out ADC0852 2-CHANNEL MUX Dual-In-Line Package TLH5521 – 10 Top View AGND and COM internally connected to GND VREF internally connected to VCC Order Number ADC0852 See NS Package Number N08E ADC0854 4-CHANNEL MUX Dual-In-Line Package TLH5521 – 11 Top View Order Number ADC0854 See NS Package Number N14A TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation RRD-B30M75Printed in U S A |
类似零件编号 - ADC0852CCN |
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类似说明 - ADC0852CCN |
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