PT8A995 (Obsolete)

Product Description

The PT8A995 and PT8A996x provide a simple and economic solution for basic Digital Proportional R/C car toys. The chipset uses CMOS LSI Analog and Mixed Signal technology. They provide high quality encoder/decoder circuit.

PT8A995 severs as an encoder. To obtain accurate timing easily, Manchester encoding is employed. Some digital modulation scheme can be used, e.g., general ASK, OOK, FSK and QPSK. OOK is easy to implement and low cost.

The PT8A996x provides a simple and cost effective solution for basic Digital Proportional R/C car toys with PT8A995 together. RF circuit in receiver side can demodulate RF signal. The demodulated signal will be amplified and filtered. After that, the base-band signal is formed. DPLL is adopted to generate sampling clock. An internal A/D converter is required to make servo motor work well. The inputs are SRV and OFFSET. Overload protection mechanism is built-in to meet Toy Safety Requirement.

The PT8A996x provide four solutions for toy car by different capability Servo.

Features

• PT8A995 works as encoder and PT8A9961/9962/9963/9964 work as decoders
• Supply voltage: 3.3V to 6.0V
• Internal auto-shutdown function
• Internal over-load protection to meet HD271 safety specification (996x)
• Integrated RF circuit (995)
• Two analog channels, one for tachospeed and the other for steering
• 32 steps for each of two analog channels
• Fine tuning selection for two analog channels
• Few external components needed
• Closed loop adjustment for servo motor (996x)
• Built-in voltage regulator (996x)
• Package: 16-pin DIP (995P), 20-pin DIP (996xP), 20-pin SOIC (996xS), see Ordering Information.

Applications

• Remote Controller
• Toys
• Remote Measurement