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参数资料
| 型号： | ADC0854CCN |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | ADC |
| 英文描述： | Multiplexed Comparator with 8-Bit Reference Divider |
| 中文描述： | 8-BIT COMPARATOR, ONE BIT ADC, SERIAL ACCESS, PDIP14 |
| 封装： | PLASTIC, DIP-14 |
| 文件页数： | 1/20页 |
| 文件大小： | 327K |
| 代理商： | ADC0854CCN |
TL/H/5521
A
April 1995
ADC0852/ADC0854
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 (V
TH
). 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 V
CC
.
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
(/2
LSB or
g
1 LSB of Reference (0.2%)
Y
Single 5V power supply
Y
Low Power, 15 mW
TL/H/5521–1
FIGURE 1. ADC0854 Simplified Block Diagram (ADC0852 has 2 input channels,
COM tied to GND, V
REF
tied to V
CC
, V
a
omitted, and one GND connection)
2 Channel and 4 Channel Pin Out
ADC0852 2-CHANNEL MUX
Dual-In-Line Package
TL/H/5521–10
Top View
AGND and COM internally connected to GND
V
REF
internally connected to V
CC
Order Number ADC0852
See NS Package Number N08E
ADC0854 4-CHANNEL MUX
Dual-In-Line Package
TL/H/5521–11
Top View
Order Number ADC0854
See NS Package Number N14A
TRI-STATE
é
is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation
RRD-B30M75/Printed in U. S. A.
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PDF描述 |
|---|---|
| ADC0852 | Synchronous 4-Bit Up/Down Counters With Up/Down Mode Control 16-PDIP 0 to 70 |
| ADC0852CCN | Multiplexed Comparator with 8-Bit Reference Divider |
| ADC0858BIN | 8-Bit Analog Data Acquisition and Monitoring Systems |
| ADC0858BIV | 8-Bit Analog Data Acquisition and Monitoring Systems |
| ADC0851 | 8-Bit Analog Data Acquisition and Monitoring Systems |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADC0854CCN/A+ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Comparator |
| ADC0854CCN/B+ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Comparator |
| ADC0858 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| ADC0858BIJ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Single-Ended Data Acquisition System |
| ADC0858BIN | 制造商:NSC 制造商全称:National Semiconductor 功能描述:8-Bit Analog Data Acquisition and Monitoring Systems |
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