AD2S90APZ: Low Cost, Complete 12-Bit Resolver-to-Digital Converter PLCC-20封装
The AD2S90 is a complete 12-bit resolution tracking resolver-to- digital converter. No external components are required to operate the device.
The converter accepts 2 V rms ± 10% input signals in the range 3 kHz-20 kHz on the SIN, COS and REF inputs. A Type II servo loop is employed to track the inputs and convert the input SIN and COS information into a digital representation of the input angle. The bandwidth of the converter is set internally at 1 kHz. The maximum tracking rate is 375 rps at 12-bit resolution.
Angular position output information is available in two forms, absolute serial binary and incremental A quad B.
The absolute serial binary output is 12-bit (1 in 4096). The data output pin is high impedance when Chip Select CS is logic HI. This allows the connection of multiple converters onto a common bus. Absolute angular information in serial pure binary form is accessed by CS followed by the application of an external clock (SCLK) with a maximum rate of 2 MHz.
The encoder emulation outputs A, B and NM continuously produce signals equivalent to a 1024 line encoder.
When decoded this corresponds to 12-bits resolution. Three common north marker pulse widths are selected via a single pin (NMC).
An analog velocity output signal provides a representation of velocity from a rotating resolver shaft traveling in either a clockwise or counterclockwise direction.
The AD2S90 operates on a ±5 V dc ± 5% power supplies and is fabricated on Analog Devices' Linear Compatible CMOS process (LC2MOS). LC2MOS is a mixed technology process that combines precision bipolar circuits with low power CMOS logic circuits.
AD2S90APZ 特点
- Complete Monolithic Resolver-to-Digital Converter
- Incremental Encoder Emulation (1024-Line)
- Absolute Serial Data (12-Bit)
- Differential Inputs
- 12-Bit Resolution
- Industrial Temperature Range
- 20-Lead PLCC
- Low Power (50 mW)
AD2S90APZ 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD2S90AP | 量产 | 20 ld PLCC | 20 | 工业 |
| AD2S90APZ | 量产 | 20 ld PLCC | 20 | 工业 |
AD2S90APZ 应用技术支持与电子电路设计开发资源下载
- AD2S90 数据手册DataSheet下载 . pdf
- Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf
- ADC模数转换器选型指南 . pdf
