RAA2P3200 AID AI Datasheet™

600k

rpm electrical

Max Speed

<100

Prop. Delay

bits

Resolution

±0.1%

full scale

Accuracy

📋 Product Overview

The RAA2P3200 is a high-speed, magnet-free inductive position sensor IC. It detects metallic target position via eddy currents on PCB-trace coils — no magnet, no shielding required. Configurable via NVM for rotary, linear, and arc motion from −40 °C to +125 °C in a 16-TSSOP package.

No Magnet Required Stray-Field Immune True Power-On Absolute 16-Point Linearization ±18 V OVP SafeSPI + UART + ABI/UVW NVM 48-bit User ID

🔲 Block Diagram

⚡ Key Features

Sensing

Eddy-current, no permanent magnet
Supports Al, steel, Cu PCB targets
On-axis & off-axis rotation
Linear, arc, and rotary motion
Adaptable coil period count

Interfaces

14-bit SafeSPI @ 10 MHz
14-bit UART @ 2 Mbit/s
ABI / Step-Dir 12-bit
UVW commutation
AB+PWM (12/14-bit)

Reliability

±18 V OVP & reverse polarity
Extensive on-chip diagnostics
Broken & short wire detection
−40 °C to +125 °C operation
3.3 V / 5.0 V programmable

🎯 Typical Applications

⚙️ BLDC Motor Control

Rotor position sensing via UVW commutation. Adaptable to any pole-pair count. Replaces Hall sensors with a single low-cost PCB coil.

📐 Encoder Replacement

Drop-in ABI/Step-Dir encoder. Immune to dirt, oil, and magnetic interference. True Power-On burst eliminates homing cycles.

📏 Linear & Arc Sensing

Multi-periodic coils support linear actuators and arc motion. 4× periodic design improves mechanical accuracy by 4×.

📊 Absolute Maximum Ratings

Parameter	Min	Max	Unit
Supply Voltage VDD (continuous)	−18	18	V
Sensor RX coil input (RX1–RX4)	−12	12	V
TX output pins (TX1, TX2)	−0.3	5.5	V
Internal VDDD	−0.3	2.0	V
Ambient Temperature	−40	125	°C
Junction Temperature	−40	135	°C
Storage Temperature	−55	160	°C
ESD (HBM, all pins)	—	±2	kV
ESD (CDM, all pins)	—	±750	V
Thermal Resistance θJA (16-TSSOP)	—	89.5	K/W

⚡ Electrical Characteristics

Parameter	Min	Typ	Max	Unit
Supply Voltage (5V mode)	4.5	5.0	5.5	V
Supply Voltage (3.3V mode)	3.0	3.3	3.6	V
VDDD (internal digital supply)	1.75	1.80	1.85	V
Current Consumption ICC (no coil)	10	15	20	mA
POR High Threshold	—	2.61	2.70	V
POR Low Threshold	2.30	2.38	—	V
Start-up time (prog. enabled)	—	5	—	ms
Start-up time (prog. locked)	—	3	—	ms
CVDDD capacitor	—	100	—	nF
CVDD capacitor (nominal)	100	470	—	nF

📐 Position Resolution & Accuracy

Parameter	Value	Unit
UART/SPI resolution	14	bits
ABI/Step-Dir (binary)	512–4096	cpr/period
ABI/Step-Dir (decimal)	500–4000	cpr/period
PWM resolution	12–14	bits
Position refresh rate	2–3	µs
Accuracy (nom. T, VDD)	±0.1	%FS
Accuracy (full T, VDD range)	±0.2	%FS
Signal noise (50 mVpp RX)	0.1	° el. rms
Signal noise (5 mVpp RX)	0.5	° el. rms
RX coil amplitude range	5–200	mVpp

🔁 LC Oscillator Specifications

Parameter	Min	Typ	Max	Unit
Excitation frequency fLC	2	—	5.5	MHz
Equiv. parallel resistance RPeq	—	250	—	Ω
TX amplitude @ 5.0V	—	—	8.8	Vpp
TX coil drive current ILC	0	—	16	mA
Series resistors RTx1, RTx2	—	10	—	Ω

💾 Non-Volatile Memory

Parameter	Value	Unit
Data retention @ TJ=100°C	≥15	years
Data retention @ TJ=25°C	>100	years
NVM write endurance	1000	cycles
Write/Read temperature	−40 to +125	°C
Customer ID scratchpad	48	bits

📍 Pin Assignment — 16-TSSOP

#	Name	Type	Description
1	IN1	Digital In	Not used (SPI/INC/UART)
2	CS	Digital In	SPI: chip select (active low); UART: ADR0
3	MOSI	Digital In	SPI: data in; UART: ADR1
4	AIN	Analog In	12-bit auxiliary analog input (readable over SPI/UART)
5	RX4	Sensor In	Receiver coil COS_N
6	RX3	Sensor In	Receiver coil SIN_N
7	RX2	Sensor In	Receiver coil COS
8	RX1	Sensor In	Receiver coil SIN
9	TX1	TX Out	Transmitter coil terminal (series RTx1, CTx1 to GND)
10	IO1	Digital I/O	SPI: SCK; INC: A/Step/U; UART: —
11	TX2	TX Out	Transmitter coil terminal (series RTx2, CTx2 to GND)
12	OUT2	Digital Out	SPI: MISO; INC: B/Dir/V; UART: TxD
13	OUT1	Digital I/O	SPI: DOUT; INC: Index/W/PWM; UART: Bi-dir TxD/RxD
14	VDD	Supply	3.3 V or 5.0 V external supply
15	GND	Supply	Ground
16	VDDD	Supply	Internal regulated digital supply (100 nF decap to GND)

📦 Package & Ordering

Package
16-TSSOP

Body Size
4.4 × 5.0 mm, 0.65 mm pitch

MSL Rating
1

Temperature
−40 °C to +125 °C

Carrier
13″ Reel, 4000 parts/reel

Orderable PN
RAA2P3200E4GSP#HA0

Interface Selection Intelligence

Use the decision tree below to find the optimal interface. SafeSPI delivers the fastest 3.9 µs update; UART offers 2 Mbit/s multi-slave; ABI/UVW minimizes MCU overhead for motor commutation.

🔀 Interface Decision Tree

What is your primary output requirement?

BLDC Motor Commutation

Encoder Replacement

Digital Absolute Position

Linear / PWM Output

—

📊 Interface Comparison

Interface	Wires	Resolution	Speed	Update Rate	Best For
SafeSPI	4	14 bits	10 MHz SCK	3.9 µs	High-speed servo, DSP control
UART	1–2	14 bits	2 Mbit/s	15 µs	Multi-slave, cable runs
ABI	3	9–12 bits	2 MHz pulse	—	Legacy encoder replacement
UVW	3	6–48 states	600 krpm	—	BLDC commutation
AB+PWM	3	12–14 bits	4376 Hz max	—	Absolute position on power-on
Step/Dir	3	9–12 bits	2 MHz pulse	—	Stepper motor control

📈 ABI Max Speed vs Resolution

AID ML Coil Intelligence

AID's ML surrogate models can predict coil coupling performance from geometry parameters, supporting layout decisions before PCB fabrication. Use the calculator below to get starting parameters.

🔧 Coil Design Calculator

Motion Type

Target Material

Required Max Speed (rpm)

Required Mechanical Accuracy (° mech)

Pole Pairs (motor apps, 1=N/A)

📐 Recommended Configuration

📚 Design Principles & Formulas

Operating principle: TX coil driven at 2–5.5 MHz LC resonance. Metallic target creates eddy currents perturbing the field seen by SIN/COS RX coils. IC digitizes phase-quadrature signals into 14-bit position.

Single-periodic: 360° el. = 360° mech. 1:1 conversion. Best for full 360° rotary sensing.

Multi-periodic (N): Mechanical error ÷ N. Resolution × N. Best for <360° range or multi-pole motors.

LC Resonator Formulas

f_TX = 1 / (2π √(L·C_Tx/2))
R_Peq = (1/R_S) × (L/C)
Q = R_Peq × √(C/L) = ω·L/R_S

📈 Mechanical Accuracy & Resolution vs Coil Periods

AID ML Linearization Optimizer

AID's optimizer analyzes a measured error curve and identifies 16 X/Y coordinate placements to minimize worst-case residual positional error.

📊 Figure 11A — Error Curve with 16-Point Linearization

Raw electrical error vs. position (0–360°). Each point marks a programmable linearization anchor.

📊 Figure 11B — Before vs After Linearization

Error before linearization (red) vs. after (green). The 2D 16-point algorithm significantly reduces worst-case positional error across the full 360° range.

🎯 Linearization Point Optimizer

Number of Points (PLin)

📐 Linearization Points

📋 Linearization Specifications

Parameter	Value	Unit
Max linearization points	16	—
Grid resolution X and Y	0.088	° el.
Coordinate resolution	12	bits
PLin options	0, 2, 4, 6, 8, 16	—
X/Y range	0° to <360°	el.
Clamping level	0–100% VDD (12-bit)	—

AID Diagnostic Intelligence

The RAA2P3200 has 20+ on-chip diagnostic monitors. AID's ML surrogate models can characterize the expected signal behavior of a coil system, supporting anomaly detection and system-level validation.

🔍 Interactive Fault Diagnostic Guide

⚡ Supply Voltage Fault ▼

VDD Monitor detects out-of-range supply. UV thresholds: 3.95V (5V mode), 2.7V (3.3V mode). OV thresholds: 5.55V / 3.65V.

✔ Check CVDD decap (470 nF nom.). Verify PSU regulation. Scope VDD for transients.

📡 RX Coil Fault (Short / Break) ▼

RX Sine/Cosine monitors detect shorts to GND/VDD and broken wires on SIN and COS independently. Fault flagged within 2.3 ms (fdti_cfg=1).

✔ Incremental mode: outputs go high-ohmic → diagnostic state from pull-up/down resistors. SafeSPI: CRC errors flag fault automatically.

🔄 TX / LC Oscillator Fault ▼

LC Oscillator Monitor flags stuck oscillator or frequency out of 2–5.5 MHz window. TX Voltage Monitor checks common-mode of TX1/TX2.

✔ Verify CTx1, CTx2 values and LTx inductance. Check for solder bridges on TX1/TX2. Confirm RTx1, RTx2 ≥ 10 Ω.

🌡️ Temperature Fault ▼

Internal junction temperature sensor. Warning flag before shutdown. θJA = 89.5 K/W for 16-TSSOP.

✔ At 15 mA @ 5V: P = 75 mW → ΔTJ ≈ 6.7 °C above ambient. Ensure adequate PCB copper pour around the IC.

💾 NVM Integrity Fault ▼

CRC check over NVM and shadow registers. NVM read timeout detection. Max write endurance: 1000 cycles.

✔ Do not exceed 1000 write cycles. Verify programming timing: tProgEn ≤ 5 ms, tProgUL ≤ 75 ms after POR.

📶 Signal Magnitude Fault ▼

Magnitude Monitor: √(Vsin² + Vcos²). Programmable upper/lower alarm limits (2×14-bit). AGC error when loop fails to converge.

✔ Ensure RX amplitude 5–200 mVpp. Check air gap to target. Verify RPeq ≥ 250 Ω (adequate coil Q).

⚠️ Incremental Diagnostic States

Index Setting	ABI Fault State	UVW Fault State
ABI=001	111	111
ABI=111	001	000
ABI=011	101	000
ABI=101	011	111

PWM fault: 2.5% (diag-low) or 97.5% (diag-high) duty cycle, outside normal 5.56–94.44% range.

⏱️ Fault Detection Timing

Parameter	fdti_cfg=1	fdti_cfg=0	Unit
TFDTI (fault detection interval)	2.3	20	ms
Broken signal (incremental)	≤ 1 electrical period		—
Broken supply (incremental)	Immediate (high-ohmic)		—
SafeSPI fault indication	CRC / status bits S0, S1		—

⚙️ Config Template: 3-Phase BLDC Motor

Interface: UVW (3 channels) or ABI+Index
Coil: N-periodic matching motor pole pairs
Resolution: 12-bit → 117 krpm max
True Power-On: Enable ABI burst mode

Set interface_mode = UVW
Set uvw_pole_pairs = motor pole count
Set coil_periods = N to match poles
Enable 16-point linearization
Lock NVM after calibration

AID AI Advantage

AID's ML surrogate models can predict commutation accuracy vs. air gap and target material, supporting design validation before hardware build.

📐 Config Template: Encoder Replacement (ABI)

Interface: ABI + Index (3 wires)
Resolution: 4096 cpr binary or 4000 cpr decimal
Index pulse: 1 or 3 LSB width, 4 position options
Max Speed @ 12-bit: 117,000 rpm

Advantages over optical encoder:

No glass disk — immune to shock and vibration
No LED — immune to contamination
EMC immune — no stray field sensitivity
±18V OVP — direct cable connection

AID AI Advantage

AID can derive coil geometry and linearization parameters from a target encoder specification, supporting faster design convergence.

📏 Config Template: Linear Position

Interface: SafeSPI (highest update rate) or UART
Coil: Linear TX loop + SIN/COS RX traces
Target: Aluminum strip or PCB copper trace
Resolution: 14-bit over full-scale travel
Accuracy: ±0.1% FS with ideal coil design

The coil period maps to full linear stroke. Multi-periodic designs divide the stroke into N segments — increasing accuracy N× at the cost of absolute range.

🔌 Config Template: Multi-Slave UART Bus

Interface: UART single-wire open-drain
Sensors per bus: Up to 4 (slave address 0x0–0x3)
Address: NVM or pin strapping (CS=ADR0, MOSI=ADR1)
Baud: Up to 2 Mbit/s push-pull point-to-point
Fast read: 2 registers per 46.5 µs frame @ 2M baud

Point-to-point: Push-pull, up to 2 Mbit/s
Multi-slave: Open-drain single wire
Pseudo-diff: OUT1 (RxD/TxD) + OUT2 (TxD complement)

💰 Total Cost of Ownership Comparison

Estimated comparison. RAA2P3200 + PCB coil eliminates magnet, encoder body, alignment fixtures, and reduces test time via on-chip diagnostics and built-in linearization.

⚡ PWM Duty Cycle Calculator

PWM Resolution

Position (° electrical, 0–360)

180 °

PWM Frequency

📊 PWM Output

🔁 LC Resonator Calculator

Inductance L (µH)

Split Capacitor CTx each (nF)

Coil Series Resistance RS (Ω)

📐 LC Results

📐 Max Speed Calculator

ABI Resolution (bits)

Number of Coil Periods

🚀 Speed Results

🌡️ Thermal Calculator

Supply Voltage VDD (V)

Current ICC (mA)

Ambient Temperature (°C)

🌡️ Thermal Results

📐 Operating Space Accuracy Surrogate Model

Physics-Anchored Trilinear Interpolation

Slide the three controls to query predicted positional accuracy at any combination of temperature, supply voltage, and speed within the RAA2P3200 operating envelope. The model interpolates continuously across a 4×4×5 grid anchored to hard spec values from Table 5 (±0.10% FS nominal; ±0.20% FS over full T+V range) and the propagation delay spec (<100 ns). Speed contribution models residual delay after the IC's built-in speed compensation (80% correction). This is a physics-derived interpolating surrogate — not measured silicon data. Validate against your own characterisation before production sign-off.

Temperature (°C) 25 °C

Supply VDD (V) 3.30 V

Speed (rpm) 0 krpm

PREDICTED ACCURACY

0.1000 % FS

Nominal spec

Equivalent angle error: 0.360 ° el.

Equivalent LSB error: 16 LSBs (14-bit)

Margin to 0.20% limit: +0.1000 % FS

Static (T+V) contribution: 0.1000 %

Speed contribution: 0.0000 %

📈 Speed sweep — accuracy vs. speed at current T and VDD

🌡️ Temperature sweep — accuracy vs. temperature at current VDD and speed

Anchor sources: Table 5 (Position accuracy ±0.10% FS nominal, ±0.20% FS over T+V range); Table 5 (propagation delay <100 ns); Table 7 (fLC 2–5.5 MHz). All data derived from RAA2P3200 datasheet Rev. 1.2. Physics-based interpolation only — no measured silicon characterisation data embedded.

🤖 AID AI Design Assistant

AID Design Intelligence — What's inside this datasheet

For this device the physics is fully defined by Renesas specification data. The most valuable tools are therefore physics-anchored calculators and one physics-derived interpolating surrogate — not black-box ML models. Here is what is implemented and why.

Implemented: Operating Space Accuracy Surrogate (Accuracy Model tab)

A trilinear interpolation surrogate across temperature (−40 to 125 °C), supply voltage (3.0 to 5.5 V), and speed (0 to 600 krpm). Anchored to Table 5 spec values (±0.10% FS nominal; ±0.20% FS over full T+V range at low speed) with propagation delay physics layered on top. Gives a continuous accuracy prediction at any operating point — something the static PDF cannot provide.

Not implemented: Coil geometry → signal amplitude prediction

Predicting coupling coefficient, VRX amplitude, and SNR from coil geometry requires FEM simulation sweep data or multi-variant silicon characterisation — neither is in the datasheet. This capability requires AID's external data pipeline.

Not implemented: Linearization point minimax optimizer

The Linearization tab shows point placement on the one digitised reference curve from Fig. 11. An optimizer that minimises worst-case residual for an arbitrary measured error curve requires the customer's own characterisation CSV as input. The algorithm is available in AID's platform — contact AID to enable it.

Ask a Design Question

📖 Section 1: What is this AID AI Datasheet™?

This is an AID AI Datasheet™ — an interactive, self-contained HTML document that embeds physics-anchored calculators, a trilinear interpolating accuracy surrogate model, and real specification data for the Renesas RAA2P3200 inductive position sensor IC. All tools are derived directly from the Renesas datasheet Rev. 1.2.

Unlike a static PDF datasheet, this document lets you predict accuracy at any operating point (temperature × VDD × speed), calculate coil parameters interactively, explore interface trade-offs with a guided decision tree, view interactive linearization error charts, and configure your application using tested templates.

All data derived from Renesas RAA2P3200 datasheet Rev. 1.2 (Dec 15, 2025). Created by Analog Intelligent Design Inc. | aianalog.co

📖 Section 2: Navigation Guide

Tab	Content	Best For
Overview	KPIs, block diagram, features	First evaluation, management review
Specifications	All electrical tables	System architecture, PCB design
Pinout & Package	Pin diagram and descriptions	PCB layout, footprint
Interfaces	SafeSPI, UART, ABI, UVW details + decision tree	Firmware / MCU integration
Coil Design	Calculator, principles, formulas	PCB coil design
Linearization	Measured error charts, optimizer	Calibration, accuracy optimization
Diagnostics	Fault flow, states, timing	Safety / reliability design
Applications	Config templates, TCO analysis	Design-in, proposal
Design Tools	PWM, LC, speed, thermal calculators	Quick engineering calculations
Accuracy Model	Trilinear surrogate: accuracy vs T, VDD, speed	Operating point verification, margin analysis
AI Assistant	Design intelligence explanation + Q&A chat	Design acceleration

📖 Section 3: Getting Started Checklist

Select supply voltage: 3.3V or 5V (programmable via NVM)
Choose interface: Use the Interface Decision Tree (Interfaces tab)
Design coil: Use Coil Design Calculator; verify LC resonator in Design Tools
Add decoupling: CVDD = 470 nF; CVDDD = 100 nF; CRX1–CRX4 = 220 pF
Connect TX coil: TX1 and TX2 with series RTx (≥10 Ω) and CTx split caps
Power-on programming: Send enable command within 5 ms of POR; unlock within 75 ms
Run calibration: Rotate target through full range; measure error; apply 16-point linearization
Lock NVM: Set lock bit after final calibration — irreversible
Verify diagnostics: Confirm fault detection with deliberate broken-wire test
Production test: Use UART fast-read mode for efficient ATE throughput

Disclaimer: This AID AI Datasheet™ is produced by Analog Intelligent Design Inc. (AID) based on publicly available Renesas RAA2P3200 datasheet Rev. 1.2 (Dec 15, 2025). All specifications are derived from the Renesas official document. AID makes no warranty regarding accuracy of derived calculations or design guidance. Always verify final designs against the official Renesas datasheet and application notes. Interactive calculators and AI recommendations are engineering aids only and do not constitute design certification. © 2025 Analog Intelligent Design Inc. AID AI Datasheet™ is a trademark of Analog Intelligent Design Inc. Renesas and RAA2P3200 are trademarks of Renesas Electronics Corporation.