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参数资料
| 型号： | ADC08138CIWM |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | ADC |
| 英文描述： | 8-Bit High-Speed Serial I/O A/D Converters with Multiplexer Options, Voltage Reference, and Track/Hold Function |
| 中文描述： | 8-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20 |
| 封装： | SO-20 |
| 文件页数： | 16/21页 |
| 文件大小： | 488K |
| 代理商： | ADC08138CIWM |
Functional Description
(Continued)
Adjusting for an Arbitrary Analog Input
Voltage Range
If the analog zero voltage of the A/D is shifted away from
ground (for example, to accommodate an analog input signal
which does not go to ground), this new zero reference
should be properly adjusted first. A V
IN
(+) voltage which
equals this desired zero reference plus
1
2
LSB (where the
LSB is calculated for the desired analog span, using 1 LSB=
analog span/256) is applied to selected “+” input and the
zero reference voltage at the corresponding “” input should
then be adjusted to just obtain the 00
HEX
to 01
HEX
code tran-
sition.
The full-scale adjustment should be made [with the proper
V
() voltage applied] by forcing a voltage to the V
IN
(+) in-
put which is given by:
Applications
where:
V
MAX
= the high end of the analog input range
and
V
MIN
= the low end (the offset zero) of the analog range.
(Both are ground referenced.)
The V
IN (or V
) voltage is then adjusted to provide a
code change from FE
HEX
to FF
HEX
. This completes the ad-
justment procedure.
A “Stand-Alone” Hook-Up for ADC08138 Evaluation
DS010749-45
*Pinouts shown for ADC08138.
For all other products tie to pin functions as shown.
www.national.com
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADC08138CIWM/NOPB | 制造商:Texas Instruments 功能描述:ADC Single SAR 8-bit Serial 20-Pin SOIC W |
| ADC08138CIWMX | 功能描述:IC ADC 8BIT HS SERIAL I/O 20SOIC RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 位数:12 采样率（每秒）:3M 数据接口:- 转换器数目:- 功率耗散（最大）:- 电压电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-23-6 包装:带卷 (TR) 输入数目和类型:- |
| ADC08138CIWMX/NOPB | 制造商:Texas Instruments 功能描述:ADC Single SAR 8-bit Serial 20-Pin SOIC W T/R |
| ADC08138CMJ | 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 |
| ADC081500 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:High Performance, Low Power, 8-Bit, 1.5 GSPS A/D Converter |
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