ANALOG DEVICES AD698SQ 芯片, LVDT信号调节器, 20KHZ, 0.05% DIP24
Product Details
The AD698 is a complete, monolithic Linear Variable Differential Transformer LVDT signal conditioning subsystem. It is used in conjunction with LVDTs to convert transducer mechanical position to a unipolar or bipolar dc voltage with a high degree of accuracy and repeatability. All circuit functions are included on the chip. With the addition of a few external passive components to set frequency and gain, the AD698 converts the raw LVDT output to a scaled dc signal. The device will operate with half-bridge LVDTs, LVDTs connected in the series opposed configuration 4-wire, and RVDTs.
The AD698 contains a low distortion sine wave oscillator to drive the LVDT primary. Two synchronous demodulation channels of the AD698 are used to detect primary and secondary amplitude. The part divides the output of the secondary by the amplitude of the primary and multiplies by a scale factor. This eliminates scale factor errors due to drift in the amplitude of the primary drive, improving temperature performance and stability.
The AD698 uses a unique ratiometric architecture to eliminate several of the disadvantages associated with traditional approaches to LVDT interfacing. The benefits of this new circuit are: no adjustments are necessary; temperature stability is improved; and transducer interchangeability is improved.
### Features and Benefits
Linearity: 0.05%
Output Voltage: ±11 V
Gain Drift: 20 ppm/°C typ
Offset Drift: 5 ppm/°C typ
电源电压DC 13.0V min
供电电流 15 mA
针脚数 24
带宽 20 kHz
工作温度Max 125 ℃
工作温度Min -55 ℃
电源电压Max 36 V
电源电压Min 13 V
安装方式 Through Hole
引脚数 24
封装 CDIP-24
宽度 7.87 mm
高度 3.56 mm
封装 CDIP-24
工作温度 -55℃ ~ 125℃
产品生命周期 Active
包装方式 Tube
制造应用 Unmanned Systems, Aerospace and Defense, Avionics
RoHS标准 Non-Compliant
含铅标准 Contains Lead
REACH SVHC版本 2015/12/17
ECCN代码 EAR99