The RAA306400XGFP is an R/D (Resolver/Digital) conversion IC that converts the resolver detection signal (electrical angle information), which is an analog signal based on the mechanical rotation angle of the resolver, from a one-phase excitation two-phase output type resolver sensor (angle sensor) into a digital signal that is then output.
Reduce tack time with high-speed response scans that you can't achieve with other Resolver to Digital Converter (RDC) ICs.
Supports both voltage and current detection methods and implements a winding error correction function so there is no selecting the resolver manufacturer.
Improved availability of motors and resolvers.
The cost of the device (RDC IC) is reduced by using some of the motor control MCU functions that are always required and simplifying the RDC circuit.
|Resolver drive unit||Input||square wave: 5/10/20kHz, 2.5Vp-p (Max.)
|Excitation signal output
||AC voltage: 2.5Vp-p (Max.)
Alternating current: 35mAp-p (Max.)
|Over-temperature detection circuit||on-chip|
|Converter part||Differential amplifier circuit||Variable gain: 2, 4, 8, 16.5X|
|Signal conversion circuit||Angle error correction function, internal circuit error correction function|
|Disconnection detection circuit||Detect disconnection from the signal amplitude|
|Amplifier circuit unit||Differential amplifier circuit||2ch (differential input support), variable gain: 10, 25X, for motor control current detection|
|Control||Communication function||SPI interface (Max. 1MHz)|
|Operating frequency||4 MHz|
|Conversion error||±0.2 degrees|
|Supply voltage||VDD = 4.5-5.5 V, IOVDD = VDD|
|Supply current||Maximum operating current: 20 mA (Typ.)
Power save time: 420 μA (Typ.)
|Operating ambient temperature||-40 ℃ to +105 ℃|
|Package||48-pin plastic LQFP (7mm x 7mm, 0.5mm pitch)|
VR type 4-phase resolver
Voltage detection method
Current detection method
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