AD2S90AP Low-cost, complete 12-bit resolve-to-digital converter
The AD2S90 is a complete 12-bit resolution resolve-to-digital converter that operates without the need for external components.
The converter's SIN, COS, and REF inputs allow input of 2 V rms ± 10%, with frequencies ranging from 3 kHz to 20 kHz. Type II servo loops are used to track input signals and convert information from the SIN and COS inputs into digital quantities corresponding to the input angle. The converter's bandwidth is internally set to 1 kHz. At 12-bit resolution, the maximum tracking rate is 375 rps.
Angular position output information is provided in two forms: absolute serial binary and incremental A quad B.
Absolute serial binary output is 12 bits (1/4096). When the chip selection CS is at a logic high level, the data output pin is high-impedance, allowing multiple converters to be connected to the same bus. The absolute angular information in serial pure binary form is first accessed by CS, then an external clock (SCLK) with a maximum rate of 2 MHz is applied.
The encoder simulation outputs A, B, and NM continuously generate signals equivalent to a 1024-line encoder.
When decoding, this is equivalent to a 12-bit resolution. The three shared road marker pulse widths are selected via single pin (NMC).
The analog speed output signal provides the speed representation of the rotating axis clockwise or counterclockwise.
The AD2S90 operates on a ±5 V ± 5% DC power supply and is manufactured using ADI's linear-compatible CMOS process (LC2MOS). LC2MOS is a hybrid technology process that combines precision bipolar circuits with low-power CMOS logic circuits.
Features and Benefits:
A complete single-chip resolve-to-digital converter
Incremental Encoder Simulation (1024 lines)
Absolute serial data (12-bit)
Differential input
12-bit resolution
Industrial temperature range
20-pin PLCC package
Low power consumption: 50 mW
Microchip Centennial Electronic Technology (Shenzhen) Co., Ltd
Address: 13H, Block A, Huaqiang Plaza, Huaqiang Road, Futian District, Shenzhen
Phone: 0755-83591082
Fax: 0755-83591083
Q Q：1051085817
//www.chip100.com/