AD2S80A AD2S81A AD2S82A RDC monolithic integrated circuit

The AD2S80A RDC tracking monolithic integrated circuit is Analog Devices' latest generation RDC. It can be utilized for synchro, resolver, and inductive synchronizer digital conversion. This device integrates advanced CMOS logic and bipolar high-accuracy linear circuits using a BiMOS production process on a single chip. The resolution and dynamic performance of the AD2S80A, along with the AD2S82A, can be user-selected, allowing for sub-resolutions of 10, 12, 14, or 16 bits. The AD2S81A has a fixed resolution of 12 bits. The resolver signal converters output a natural binary number and employ a ratiometric tracking method, meaning the output digital angle is relevant only to the ratio of the sine and cosine input signals, irrespective of their absolute values. This design provides high noise suppression capabilities and reduces errors caused by long-distance connections from the rotary transformer. The device features 16 data output lines with a three-state output data latch function, controlled via the BYTE SELECT pin, enabling data transmission to an 8-bit or 16-bit data bus. Additionally, it can output an analog signal proportional to speed (VELOCITY O/P), which is useful for motor speed applications. The reference voltage frequency range is between 50 Hz and 20 kHz. Recommended operating conditions include a supply voltage (V) of ±10% at 12V, a logic supply voltage (vL) of +5V ±10%, an RMS voltage for the analog input signal (sin, cos) of 2V ±10%, and a reference voltage of 1-8V. The maximum distortion between the input signal and reference voltage should be 10%, with a maximum phase shift of 10 degrees. The internal block diagram of the AD2S80A and its external connections illustrate its integration into servo tracking systems. The digital output can automatically select the tracking speed based on the input channel number, and the conversion ratio of the input sine and cosine signals must remain within a specified amplitude and frequency range. The phase-sensitive detector demodulator provides high rejection of the reference voltage quadrature component, enhancing output resolution of 10, 12, 14, or 16 bits via SC1 and SC2 outputs.

The AD2S80A RDC is designed for applications requiring precise angular position measurement and conversion. Its monolithic design reduces the need for multiple discrete components, streamlining the overall system architecture. The BiMOS technology not only enhances performance but also ensures low power consumption, which is critical in portable and battery-operated devices. The ability to select different resolutions allows for flexibility in various applications, ranging from industrial automation to robotics, where different levels of precision may be required.

The device's robust noise suppression capabilities are particularly advantageous in environments with electromagnetic interference, as they ensure reliable operation over extended distances from the rotary transformer. The use of a ratiometric tracking method simplifies the design of the signal processing circuitry, as it minimizes the impact of variations in signal amplitude, allowing for more consistent performance.

In addition to the digital outputs, the analog velocity output provides real-time feedback on the speed of the motor, which is essential in closed-loop control systems where precise speed regulation is necessary. The specified frequency range for the reference voltage allows for compatibility with a wide range of sensors and actuators, making the AD2S80A versatile for different applications.

Overall, the AD2S80A RDC represents a significant advancement in resolver-to-digital conversion technology, offering high performance, flexibility, and reliability for modern electronic systems. Its integration capabilities and comprehensive features make it a valuable component in precision measurement and control applications.AD2S80A RDC tracking monolithic integrated circuit is ANALOG DE Vices latest generation RDC. It can be used to Synchro, resolver, inductive synchronizer digital conversion. It is the advanced CMOS logic and bipolar high accuracy linear circuits combined to BiMOS l production process in the same chip. AD2S80A resolution and dynamic performance and AD2S82A can be user selected, choose the sub resolution has 10,12] 4,16bit.

AD2S81A is fixed resolution (12hit) of the RDC. Because they will resolver signal convertors is a natural binary number is adopt a ratiometric tracking method, only output digital angle and the sine and cosine signals input ratio of relevant, irrespective of their absolute size, it has a high noise suppression capability, reduced due to the distance from the rotary transformer via a converter error caused by long-term difference. 16 data output lines have three-state output data latch function, use BYTE SELECT pin control, etc., can be transmitted to the data bus 8bit or 16bit.

Can also output analog signal proportional to the speed (VELOCITY O/P), used in place of speed made the motor. The reference voltage frequency range 50Hz-20kHz. Recommended operating conditions: Supply voltage ( V,) 10% of persons with disabilities 12V logic supply voltage (vl) + 5v 10% rms voltage analog input signal (sin, cos) 2V disabilities 10% reference voltage 1-8V input eight signals and the reference voltage distortion 10% (max) between the input signal and the reference voltage phase shift 10.

(max) 1. AD2S80A RDC 8 12 shows the internal block diagram of AD2S80A and external connections. After connection Figure, AD2S80A on the run in the previous section I servo tracking RDC ring. Digital output to select the tracking speed automatically track the input channel number. Since the conversion ratio of the input SIN and only cos signals are, therefore input signal amplitude and frequency allow q within a certain range. Since the phase sensitive detector demodulator prisoners in, the reference voltage quadrature component has a high rejection.

Its digital output resolution of 10, 12] 4,16bit by SC1 and SC2 output