参数资料
型号: AD7846AP
厂商: Analog Devices Inc
文件页数: 7/24页
文件大小: 0K
描述: IC DAC 16BIT LC2MOS VOUT 28PLCC
产品培训模块: Data Converter Fundamentals
DAC Architectures
标准包装: 1
设置时间: 7µs
位数: 16
数据接口: 并联
转换器数目: 1
电压电源: 双 ±
功率耗散(最大): 100mW
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-LCC(J 形引线)
供应商设备封装: 28-PLCC(11.51x11.51)
包装: 管件
输出数目和类型: 1 电压,单极;1 电压,双极
采样率(每秒): 143k
AD7846
Rev. G | Page 15 of 24
POSITION MEASUREMENT APPLICATION
Figure 25 shows the AD7846 in a position measurement applica-
tion using an linear variable displacement transducer (LVDT),
an AD630 synchronous demodulator and a comparator to make
a 16-bit LVDT-to-digital converter. The LVDT is excited with a
fixed frequency and fixed amplitude sine wave (usually 2.5 kHz,
2 V p-p). The outputs of the secondary coil are in antiphase and
their relative amplitudes depend on the position of the core in the
LVDT. The AD7846 output interpolates between these two inputs
in response to the DAC input code. The AD630 is set up so that
it rectifies the DAC output signal. Thus, if the output of the DAC is
in phase with the VREF+ input, the inverting input to the compara-
tor is positive, and if it is in phase with VREF, the output is nega-
tive. By turning on each bit of the DAC in succession starting
with the MSB and deciding to leave it on or turn it off based on
the comparator output, a 16-bit measurement of the core position
is obtained.
AD7846*
LVDT
DB0
DB15
R1
100k
C1
1F
PROCESSOR DATA BUS
SIGNAL
GROUND
TO
PROCESSOR PORT
*ADDITIONAL PINS OMITTED FOR CLARITY
x ASIN ω t
–(1–x) ASIN ω t
ASIN ω t
AD630*
DGND
VOUT
RIN
VREF+
VREF–
6
20
7
5
8
10
13
10
9
16
3
08
49
0-
02
7
Figure 25. AD7846 in Position Measurement Application
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相关代理商/技术参数
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AD7846APZ 功能描述:IC DAC 16BIT LC2MOS VOUT 28-PLCC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 设置时间:1µs 位数:8 数据接口:串行 转换器数目:8 电压电源:双 ± 功率耗散(最大):941mW 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC(0.295",7.50mm 宽) 供应商设备封装:24-SOIC W 包装:带卷 (TR) 输出数目和类型:8 电压,单极 采样率(每秒):*
AD7846AQ 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述:IC,D/A CONVERTER,SINGLE,16-BIT,BICMOS,DIP,28PIN
AD7846BP 功能描述:IC DAC 16BIT LC2MOS VOUT 28PLCC RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 设置时间:1µs 位数:8 数据接口:串行 转换器数目:8 电压电源:双 ± 功率耗散(最大):941mW 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC(0.295",7.50mm 宽) 供应商设备封装:24-SOIC W 包装:带卷 (TR) 输出数目和类型:8 电压,单极 采样率(每秒):*
AD7846BPZ 功能描述:IC DAC 16BIT LC2MOS VOUT 28PLCC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:1 系列:- 设置时间:4.5µs 位数:12 数据接口:串行,SPI? 转换器数目:1 电压电源:单电源 功率耗散(最大):- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-SOIC(0.154",3.90mm 宽) 供应商设备封装:8-SOICN 包装:剪切带 (CT) 输出数目和类型:1 电压,单极;1 电压,双极 采样率(每秒):* 其它名称:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND
AD7846BQ 制造商:未知厂家 制造商全称:未知厂家 功能描述:16-Bit Digital-to-Analog Converter