AEAT-7000-1GSD0

AEAT-7000 Series Ultra-precision 13-Bit Gray Code Absolute Encoder Module Data Sheet Description Features Avago Technologies’ AEAT-7000 Series is a high temperature rated optical encoder module that is capable of providing up to 13 bits of absolute positioning information. The photodetector ASIC and the light emitter are designed into a compact C-shape module. It’s small, compact and modular form factor also makes it an ideal choice for space-constrained applications. • 11 digital tracks plus 2 Sin/Cosine tracks generate precise 13-bit gray code AEAT-7000 uses a sophisticated photodetector ASIC that consists of an array of photodiodes, precision amplifiers, and additional signal processing circuitry. This photodetector ASIC includes two pairs of analog photodiodes to generate 2 channels of true differential Sine and Cosine signals. For a closed loop emitter light monitoring, the ASIC will monitor internally and self regulate if the infrared (IR) LED degrades. The Sin/Cosine photodiodes are used to drive a constant current source for the highly collimated IR illumination system. Note: Avago Technologies encoders are not recommended for use in safety critical applications, e.g., ABS braking systems, power steering, life support systems and critical care medical equipment. Avago’s products and software are not specifically designed, manufactured or authorized for sale as parts, components or assemblies for the planning, construction, maintenance or direct operation of a nuclear facility or for use in medical devices or applications. Customer is solely responsible, and waives all rights to make claims against Avago or its suppliers, for all loss, damage, expense or liability in connection with such use. Please contact sales representative if more clarification is needed. • Ultra fast, 1us cycle for serial data output word equals 16MHz • Integrated highly collimated illumination system • On-chip interpolation and code correction compensate for mounting tolerance • 2 channels true differential Sine/Cosine outputs with 1024 cycles per revolution • 1024CPR A/B channel incremental outputs • MSB can be inverted for changing the counting direction • Built-in monitor track for monitoring of LED light level • Error output for LED degradation monitoring • -40 to 85°C operating temperature Applications Typical applications include • Rotary applications up to 13 bits/360° absolute position • Industrial and maritime valve control • High precision test and measurement machines • Industrial and factory automation equipments • Textile, woodworking & packaging machineries • Nacelle & blades control in wind turbine ESD WARNING: Handling precautions should be taken to avoid static discharge. Absolute Maximum Ratings1 Parameter Symbol Min. Max. Units Storage Temperature TS -40 100 °C Operating Temperature TA -40 100 °C Supply Voltage VDD -0.3 6 V Voltages at all input and output pins Vin & Vout -0.3 VDD+0.3 V DC supply voltage VD -0.3 6.0 V Relative Air Humidity (non-condensing) 2 T/RH 40 / 93 °C/% Note: 1. Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the device should be operated at these limits. The tables “Recommended Operating Conditions and Characteristics” provide conditions for actual device operation. 2. Maximum combination of temperature on humidity Recommended Operating Conditions Description Symbol Min. Typical Max. Units Temperature TA -40 25 85 °C Notes Supply Voltage VDD 4.5 5 5.5 V Input-H-Level Threshold Vih 2.0 VDD V Input-H-Level threshold Input-L-Level Threshold Vil 0 0.8 V Input-L-Level threshold Ripple < 500 mVpp Electrical Characteristics Table(VDD = 4.5 to 5.5V, TA = -40 to +85°C) Electrical characteristics over recommended operating conditions. Typical values at 25°C Parameters Symbol Conditions ITotal LED current @10mA typ Min. Typ. Max. units Operating Currents Total Current 52 mA Digital Inputs Pull down Current Ipd -90 -60 -10 μA Pull Up Current Ipu -90 -60 -10 μA Digital Outputs Ouput-H-Level Voh Ioh = 2 mA VDD- 0.5V VDD V Output-L-Level Vol Iol = -2mA 0 0.5 V 16 MHz Serial Interface SCL Clock Frequency fclock Duty Cycle fclock Tclock,LH Accuracy within one revolution Notes 1, 2 ,3 fclock = 10MHz fSCL = 5MHz RPM = 100prm Vripple =