- 您现在的位置：买卖IC网 > PDF目录11767 > AD7569JPZ-REEL (Analog Devices Inc)IC I/O PORT 8BIT ANLG 28PLCC PDF资料下载
参数资料
| 型号： | AD7569JPZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/20页 |
| 文件大小： | 0K |
| 描述： | IC I/O PORT 8BIT ANLG 28PLCC |
| 标准包装： | 750 |
| 系列： | LC²MOS |
| 应用： | 模拟 I/O |
| 接口： | 总线 |
| 电源电压： | 4.75 V ~ 5.25 V |
| 封装/外壳： | 28-LCC（J 形引线） |
| 供应商设备封装： | 28-PLCC（11.51x11.51） |
| 包装： | 带卷 (TR) |
| 安装类型： | 表面贴装 |
AD7569/AD7669
–19–
REV. B
TARE FUNCTION FOR WEIGH SCALE—AD7569
The infinite sample-and-hold just outlined can also form the ba-
sis of a circuit to provide a tare function for a weigh scale sys-
tem. Figure 30 shows a circuit for a weigh scale system. It
incorporates a tare function using a simple circuit based on the
AD7569.
The AD587, along with the 2N6285, provides a buffered +10 V
reference to supply the low impedance load cell transducer. The
load cell output is amplified by the AD624 precision instrumen-
tation amplifier with gain adjustment provided by R1. The out-
put of the AD624 is applied to the noninverting input of a unity
gain differential summing amplifier that uses the AD707, a high
precision op amp with low drift. The AD707 feeds a 3 1/2 digit
panel meter module that converts the signal for digital readout.
The input signal to the panel meter is also applied to the analog
input of the AD7569 for the tare function. When the tare switch
(S1) is closed, a tare cycle commences and VIN is sampled and
held infinitely at VOUT until the next tare cycle. VOUT drives the
inverting input of the differential amplifier and forces its output
to zero. Thus, the tare function is used to give a readout of zero
for any undesired weight, such as a box, when only the item
placed in it is to be weighed. The tare function can also be used
in calibrating the system, to cancel out offset errors due to the
load cell, AD624 and differential amplifier.
The AD7569 offers many advantages in the system outlined,
such as: simple, low cost circuit—no need for microprocessor,
software, etc.—and low power consumption.
Figure 30. Weigh Scale System with Tare Function
相关PDF资料 |
PDF描述 |
|---|---|
| VI-B43-IX-F3 | CONVERTER MOD DC/DC 24V 75W |
| 2-5225395-0 | CONN PLUG BNC 50 OHM DUAL CRIMP |
| VI-B43-IX-F2 | CONVERTER MOD DC/DC 24V 75W |
| VI-B43-IW-F4 | CONVERTER MOD DC/DC 24V 100W |
| AD9888KSZ-100 | IC FLAT PANEL INTERFACE 128-MQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7569JR | 制造商:Rochester Electronics LLC 功能描述:8-BIT CMOS I/O PORT IC - Bulk |
| AD7569JR-REEL | 制造商:Analog Devices 功能描述:Data Acquisition System Single ADC Single DAC 8-Bit 24-Pin SOIC W T/R |
| AD7569JRZ | 功能描述:IC I/O PORT 8BIT ANALOG 24-SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 专用 系列:LC²MOS 特色产品:NXP - I2C Interface 标准包装:1 系列:- 应用:2 通道 I²C 多路复用器 接口:I²C，SM 总线 电源电压:2.3 V ~ 5.5 V 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:剪切带 (CT) 安装类型:表面贴装 产品目录页面:825 (CN2011-ZH PDF) 其它名称:568-1854-1 |
| AD7569JRZ-REEL | 功能描述:IC I/O PORT 8BIT ANALOG 24SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 专用 系列:LC²MOS 标准包装:3,000 系列:- 应用:PDA，便携式音频/视频，智能电话 接口:I²C，2 线串口 电源电压:1.65 V ~ 3.6 V 封装/外壳:24-WQFN 裸露焊盘 供应商设备封装:24-QFN 裸露焊盘（4x4） 包装:带卷 (TR) 安装类型:表面贴装 产品目录页面:1015 (CN2011-ZH PDF) 其它名称:296-25223-2 |
| AD7569KN | 制造商:Analog Devices 功能描述:Data Acquisition System Single ADC Single DAC 8-Bit 24-Pin PDIP 制造商:Analog Devices 功能描述:DATA ACQ CODEC, 1-CHANNEL, 24 Pin, Plastic, DIP |
发布紧急采购，3分钟左右您将得到回复。