AR35-T25E

Data Sheet AR35-T25E/S AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits Description The Broadcom® AR35-T25 series are programmable reflective absolute through-hole rotary encoders designed for space-constrained motion control applications. The AR35-T25 series encoder is designed with an overall diameter of 35 mm and a maximum axial through-hole of 9.5 mm for through-shaft motors and axial cabling. The AR35-T25 series provides the incremental ABI and UVW in differential mode. Both modes come with a recommended temperature range of –40°C to 115°C, suitable for most industrial applications. Dual-mode operating voltage of 3.3V and 5V are suitable for handheld and portable device applications. Features         Employing Broadcom-patented Reflective Optical Encoding Theory, the AR35-T25 series provides high-accuracy with correction, which is unattainable by the magnetic encoder.  Miniature absolute encoder ASIC surface mount DFN package: 10.9 mm (L) x 9.1 mm (W) x 1.5 mm (H) User-programmable resolution ranging from: – 17-bit and 25-bit single turn User-programmable incremental output (ABI) resolution ranging from 128 to 8192 CPR User-programmable commutation signal (UVW) ranging from 2, 3, 4, 5, 12, 30, 32 pole pair Differential output for ABI and UVW Temperature range of –40°C to 115°C, suitable for most industrial operations. Dual-mode operating voltage of 3.3V and 5V, enabling handheld and portable device applications. Selectable Absolute Serial Output Communication Protocol – SSI mode – ESL mode (Encoder Serial Link) RoHS compliance Applications      Broadcom Robotic automation and engineering Factory automation and drone Medical and dentistry, devices and equipment High-accuracy portable and handheld devices Miniature motor, servo motor, and linear actuator AR35-ThroughHole-Series-DS101 June 1, 2022 AR35-T25E/S Data Sheet AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits Functional Block Diagram SSI 3-Wire Communication Protocol Selection Figure 1: SSI 3-Wire Block Diagram ESL Communication Protocol Selection Figure 2: ESL Block Diagram Broadcom AR35-ThroughHole-Series-DS101 2 AR35-T25E/S Data Sheet AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits Mechanical Specifications DFN Package Dimensions Figure 3: Overall Package Dimensions and Pinout All dimensions are given in mm. Tolerances of form and position according to JEDEC MO-220. Package Markings Figure 4: Product Marking Information Broadcom AR35-ThroughHole-Series-DS101 3 AR35-T25E/S Data Sheet AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits Encoder Mounting Figure 5: Encoder Mounting Guide Notes on assembly:   The assembly of the encoder needs a clean room environment of Class 100k or better. The encoder needs to be enclosed with an IP50 rating enclosure. Broadcom AR35-ThroughHole-Series-DS101 4 AR35-T25E/S Data Sheet AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits Recommended PCB Land Pattern Figure 6: PCB Land Pattern Figure 7: Recommended Pb-Free SMT Reflow Soldering Profile According to JEDEC Pb-Free (J-STD-020D) Broadcom AR35-ThroughHole-Series-DS101 5 AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits AR35-T25E/S Data Sheet Electrical Specifications Recommended Operating Conditions Parameter Symbol Min. Typical Max. Unit DC Supply Voltage Vdd +4.5 +5.0 +5.5 V — DC Supply Voltage Vdd +3.0 +3.3 +3.6 V — Ripple of Supply Voltage — — — 100 mVpp Output Current per channel — — — ±5 mA — Rise Time tr — 30 — ns CL = 50 pF Fall Time tf — 30 — ns RL = 1.2 kΩ Tamb — +25 — °C — Operational Temperature TA –40 +25 +115 °C — Storage Temperature TS –40 +25 +115 °C — Humidity RH — — 85 % INC Operating Frequency — — — 128 kHz Velocity (rpm) x CPR/60 Radial Misalignment — –200 0 +200 µm — Tangential Misalignment — –200 0 +200 µm — SRPM — — 15000 rpm 512 CPR (AR35) Max. Unit Notes — Ambient Temperature Encoder Shaft Speed Notes 100 kHz Temp = 40°C Recommended Code Wheel Characteristics Parameter Specular Reflectance NOTE: Symbol Min. Typical Rf 60% — — — — 5% Reflective area Non-reflective area Characteristics are based on a BRCM qualified code wheel supplier. Refer to BRCM for a qualified reflective code wheel supplier. Absolute Maximum Ratings Parameter Symbol Value Storage Temperature TS –40°C to 115°C Operating Temperature TA –40°C to 115°C Supply Voltage Vdd 7V ESD (HBM), JS-001-2014 Moisture Sensitive Level Broadcom — ± 2kV MSL 3 (Maximum floor life = 168 hours) AR35-ThroughHole-Series-DS101 6 AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits AR35-T25E/S Data Sheet DC Characteristics The following table shows the DC characteristics over the recommended operating range, typically at 25 °C. Value Parameter Vdd Supply Current Symbol Conditions Min. Typ. Max. Unit Notes Idd Vdd = 3.3V/5V — 70 — mA — Bit — Absolute Single Turn Resolution (AR35) — — — 25 — Incremental Resolution — — — 2n — CPR n = 7,8,9,10,11,12,13 Encoder Characteristics Incremental encoder characteristics over the recommended operating condition, at 25 °C. Parameter Type Parameter Symbol Min. Typ. Max.a Units ABI Cycle Error ΔC — — 45 °e State Error ΔS — — 45 °e Index Pulse Width Po — 90,180, 360 — °e Commutation Accuracy (middle of channel I to channel U) ΔI –0.1 — +0.1 °mechanical ΔUVW –0.1 — +0.1 °mechanical Commutation (UVW) Commutation Accuracy (Channel U,V and W) a. Maximum values represent the encoder performance across the range of recommended mounting tolerance. Encoder raw accuracy characteristics over the recommended operating condition, at 25 °C. Parameter Raw accuracy (AR35) Symbol Min. Typ. Max.a Units — — ±350 — Arc-sec a. Typical values represent the encoder performance with shaft TIR < 10 µm, Φ5.991 through 5.996 mm; CW hub ID = 6.000 through 6.008 mm. Encoder Pin Functions Figure 8: Pinouts from Top View Broadcom AR35-ThroughHole-Series-DS101 7 AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits AR35-T25E/S Data Sheet SSI 3-Wire Option Pinout Configuration NOTE: Pin-35 must be grounded to VSSA, and pin-17 must connect to common GND. Pin Name Function Pad Type Analog/Digital Input/Output 1 CN/TST3 Analog Voltage Output NCOS 5V/3.3V pads Analog I/O 2 CP/TST2 Analog Voltage Output PCOS 5V/3.3V pads Analog I/O 3 SN/TST1 Analog Voltage Output NSIN 5V/3.3V pads Analog I/O 4 SP/TST0 Analog Voltage Output PSIN 5V/3.3V pads Analog I/O 5 SPI DOUT SPI Data Output 3.3V/5V (VDDPAD) Digital Output 6 SPI DIN SPI Data Input 3.3V/5V (VDDPAD) Digital Input 7 SPI CLK SPI Clock 3.3V/5V (VDDPAD) Digital Input 8 VDD Digital Supply Voltage 3.3V/5V (VDDPAD) Digital Power 9 VSS Digital GND Digital ground Digital ground Ground 10 +SSI DOUT SSI Data Output (+) 3.3V/5V (VDDPAD) Digital I/O 11 –SSI DOUT SSI Data Output (–) 3.3V/5V (VDDPAD) Digital I/O 12 +SSI NSL SSI Input (+) 3.3V/5V (VDDPAD) Digital I/O 13 –SSI NSL SSI Input (–) 3.3V/5V (VDDPAD) Digital Input 14 +SSI SCL SSI Clock (+) 3.3V/5V (VDDPAD) Digital Input 15 –SSI SCL SSI Clock (–) 3.3V/5V (VDDPAD) Digital Input 17 ESL SEL Protocol Selection Selection (GND) Ground Ground 18 EEPROM SCL EXT EEPROM Clock 3.3V/5V (VDDPAD) Digital I/O 19 EEPROM SDA EXT EEPROM Data 3.3V 5V (VDDPAD) Digital I/O 20 EEPROM WP EXT EEPROM Write Protect 3.3V/5V (VDDPAD) Digital Output 21 –A Incremental –A Output 3.3V/5V (VDDPAD) Digital Output 22 +A/PROBE1 Incremental +A Output 3.3V/5V (VDDPAD) Digital Output 23 –B Incremental –B Output 3.3V/5V (VDDPAD) Digital Output 24 +B/PROBE2 Incremental +B Output 3.3V/5V (VDDPAD) Digital Output Output 16 — 25 –I Incremental –Index Output 3.3V/5V (VDDPAD) Digital 26 +I/PROBE3 Incremental +Index Output 3.3V/5V (VDDPAD) Digital Output 27 VSSA Analog GND Analog ground Analog ground Ground 28 VDDA Analog Supply Voltage 3.3V/5V (VDDPAD) Analog Power 29 –U Incremental –U Output 3.3V/5V (VDDPAD) Digital Output 30 +U/PROBE4 Incremental +U Output 3.3V/5V (VDDPAD) Digital Output 31 –V Incremental –V Output 3.3V/5V (VDDPAD) Digital Output 32 +V Incremental +V Output 3.3V/5V (VDDPAD) Digital Output 33 –W Incremental –W Output 3.3V/5V (VDDPAD) Digital Output 34 +W Incremental +W Output 3.3V/5V (VDDPAD) Digital Output 35 Common GND (VSSA) Ground to VSSA Analog ground Analog ground Ground Broadcom AR35-ThroughHole-Series-DS101 8 AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits AR35-T25E/S Data Sheet ESL Option Pinout Configuration NOTE: Pin 35 must be grounded to VSSA, and pin 17 must connect to VDD (5V/3.3V). Pin Name Function Pad Type Analog/Digital Input/Output 1 CN/TST3 Analog Voltage Output NCOS 5V/3.3V pads Analog I/O 2 CP/TST2 Analog Voltage Output PCOS 5V/3.3V pads Analog I/O 3 SN/TST1 Analog Voltage Output NSIN 5V/3.3V pads Analog I/O 4 SP/TST0 Analog Voltage Output PSIN 5V/3.3V pads Analog I/O 5 — 6 — 7 — 8 VDD Digital Supply Voltage 3.3V/5V (VDDPAD) Digital Power 9 VSS Digital GND Digital ground Digital ground Ground 10 +ESL ESL Data Output (+) 3.3V/5V (VDDPAD) Digital I/O 11 –ESL ESL Data Output (–) 3.3V/5V (VDDPAD) Digital I/O 12 — 13 — 14 — 15 — 16 OSC_EXT External Oscillatora 3.3V/5V (VDDPAD) Digital Input 17 ESL SEL Protocol Selection Selection (VDD) Digital Power 18 EEPROM SCL EXT EEPROM Clock 3.3V/5V (VDDPAD) Digital I/O 19 EEPROM SDA EXT EEPROM Data 3.3V/5V (VDDPAD) Digital I/O 20 EEPROM WP EXT EEPROM Write Protect 3.3V/5V (VDDPAD) Digital Output 21 –A Incremental –A Output 3.3V/5V (VDDPAD) Digital Output 22 +A/PROBE1 Incremental +A Output 3.3V/5V (VDDPAD) Digital Output 23 –B Incremental –B Output 3.3V/5V (VDDPAD) Digital Output 24 +B/PROBE2 Incremental +B Output 3.3V/5V (VDDPAD) Digital Output 25 –I Incremental –Index Output 3.3V/5V (VDDPAD) Digital Output 26 +I/PROBE3 Incremental +Index Output 3.3V/5V (VDDPAD) Digital Output 27 VSSA Analog GND Analog ground Analog ground Ground 28 VDDA Analog Supply Voltage 3.3V/5V (VDDPAD) Analog Power 29 –U Incremental –U Output 3.3V/5V (VDDPAD) Digital Output 30 +U/PROBE4 Incremental +U Output 3.3V/5V (VDDPAD) Digital Output 31 –V Incremental –V Output 3.3V/5V (VDDPAD) Digital Output 32 +V Incremental +V Output 3.3V/5V (VDDPAD) Digital Output 33 –W Incremental –W Output 3.3V/5V (VDDPAD) Digital Output 34 +W Incremental +W Output 3.3V/5V (VDDPAD) Digital Output 35 Common GND (VSSA) Ground to VSSA Analog ground Analog ground Ground a. 50 Mhz (10 ppm) oscillator input is required for ESL configuration Broadcom AR35-ThroughHole-Series-DS101 9 AR35-T25E/S Data Sheet AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits Communication Protocol SSI 3-Wire Figure 9: SSI 3-Wire Timing Diagram NOTE:  NSL toggle from high to low to start request position data.  SCL maximum frequency is 10 MHz.  tREQ = 10 µs is the time of data request processing. Figure 10: AR35 SSI 3-Wire Format Output Figure 11: Alarm Bit Definition NOTE: Broadcom Refer to application notes for more detail. AR35-ThroughHole-Series-DS101 10 AR35-T25E/S Data Sheet AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits ESL Figure 12: General Transmission Frames Format on Half-Duplex Line Start of transmission frames set: Upon detected the first logic of low state 0 on the transmission line after idling state, and if the following 3 bit conforms to command identifier, the encoder will acknowledge as a valid Request Command Frame (RCF), indicating the start of transmission frame set, else, it will continue to search for next available logic of low state 0. End of transmission frames set: After the Request Command Frame is detected, if there is no Start Bit after the End Bit of the last frame read and no subsequent frame detected, end of transmission frame set is concluded. Idle state: Idle state means a space between each transmission frames set and subsequent transmission frames. At idling state, logic of output in transmission line is kept to high state 1. Encoder Data Read Out Frame Sets Format and Timing Figure 13: Encoder Data Read Out Frames Set Upon the master issue a RCF frame request, after 10.0 µs (typ.), the encoder will respond with encoder data frames set with the following content: 1. CF: Corresponds to the RCF issued from Master 2. SF: Status frame 3. DF0 through DF7: Data frames 4. CRC: Cyclic Redundancy Check frame The encoder position calculation is completed within 10.0 µs (typ.) after the end bit of the Master RCF. The encoder response data frames set formats are dependent on the requested operation by the Master RCF, see Data Frames Content with Respective Command ID. Broadcom AR35-ThroughHole-Series-DS101 11 AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits AR35-T25E/S Data Sheet Data Frames Content with Respective Command ID Command ID DF0 DF1 DF2 DF3 DF4 DF5 DF6 DF7 Command ID 4 ALMCa ABS0b ABS1 ABS2 ABS3 — — — Command ID 6 ABS0 ABS1 ABS2 ABS3 — — — — Command ID 8 ENIDc — — — — — — — Command ID A ALMC — — — — — — — Command ID B ALMC ABS0 ABS1 ABS2 ABS3 — — — Command ID C ALMC ABS0 ABS1 ABS2 ABS3 — — — a. ALMC: Encoder Alarm Flags. b. ABSn: Single-turn counts, LSB of the single-turn counts are located in ABS0 and MSB of the counts data are located in ABS3. Combining ABS0 through ABS3 will provide a total to 32-bits of single-turn data. For the single-turn 25-bits encoder option, the 7 MSB of ABS3 is fixed to 0, hence giving a total 25-bits of single turn-data. c. ENID: Encoder single-turn bits identification. For the single-turn 25-bits encoder option, ENID is fixed as 19h. Memory Data Read Out Frames Set Format and Timing Figure 14: Memory Data Read Out Frames Set Content of transmission frames: 1. RCF: Request Command Frame (RCF) from Master. 2. CF: Corresponds to the RCF issued from Master. 3. MAF: Memory Address Frame indicates the memory location to read. 4. MDF: Memory Data Frame contains the data read from memory. 5. CRC: Cyclic Redundancy Check frame. Broadcom AR35-ThroughHole-Series-DS101 12 AR35-T25E/S Data Sheet AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits Memory Data Write Frames Set Format and Timing Figure 15: Memory Data Write Frames Set Content of transmission frames: 1. RCF: Request Command Frame (RCF) from Master. 2. CF: Corresponds to the RCF issued from Master. 3. MAF: Memory Address Frame indicates the memory location to read. 4. MDF: Memory Data Frame contains the data read from memory. 5. CRC: Cyclic Redundancy Check (CRC) frame. Broadcom AR35-ThroughHole-Series-DS101 13 AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits AR35-T25E/S Data Sheet Configurations and Signal Output Customer Encoder Configuration Settings Page (Hex) Address Bit (s) Name Settings Output Default (Hex) 0x08 0x00 0-7 Register Unlock Unlock (Write 0xAB) Unlock register 8'h00 0x0E 0x09 7 EEPROM Disable 0 Enable EEPROM 8'h00 1 Disable EEPROM 5 CW Direction 0 Count UP (CCW) 1 Count UP (CW) 0x0A 0–2 ESL Encoder ID 000 Default 5–7 UVW Setting [2:0] 000 2 pole-pairs 001 3 pole-pairs 010 4 pole-pairs 3–4 0–2 0x0B Broadcom 0–1 I-width Setting CPR Setting Abs Resolution 011 5 pole-pairs 100 12 pole-pairs 101 30 pole-pairs 110 32 pole-pairs 111 32 pole-pairs 00 90 edeg 01 180 edeg 10 360 edeg 11 90 edeg 000 8192 001 4096 010 2048 011 1024 100 512 101 256 110 128 111 128 Bit: 00 17 Bit 8'hC0 8'h3F AR35-ThroughHole-Series-DS101 14 AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits AR35-T25E/S Data Sheet Customer Reserved Zero Offset and Calibration Registers Page 0x0E Address Bit (s) Name Description 0x09 0–5 Customer Configuration 1 User Programmable 0x0A 0–7 Customer Configuration 2 User Programmable 0x0C 0–7 Zero Reset 0 Zero Reset Position [8:1] 0x0D 0–7 Zero Reset 1 Zero Reset Position [16:9] 0x0E 0–7 Zero Reset 2 Zero Reset Position [24:17] 0x14 7 Alarm Reset Alarm Clear Incremental Output Format Figure 16: ABI Signals Based on Code Wheel Direction Setting 0 Figure 17: UVW Signals Based on Code Wheel Direction Setting 0 Broadcom AR35-ThroughHole-Series-DS101 15 AR35-T25E/S Data Sheet AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits Ordering Information Figure 18: Encoder Ordering Information Calibration Kit   Ordering Part Number: A25E-0030 Description: Linear and Through-Hole, AR35 Calibration Kit Figure 19: Code Wheel Ordering Information Broadcom AR35-ThroughHole-Series-DS101 16 AR35-T25E/S Data Sheet AR35 Through-Hole Series Miniature Programmable Single-Turn Absolute Encoder with Resolution Ranging from 17 Bits to 25 Bits Packaging   Encoder Packaging Information (Tray): 60 units per tray Code wheel Packaging Information (Tray): 48 units per tray Figure 20: Encoder Tray Packaging Information Broadcom AR35-ThroughHole-Series-DS101 17 Copyright © 2019-2022 Broadcom. 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