Renesas ISL29501-ST-EV1Z User Manual
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Renesas ISL29501-ST-EV1Z User Manual

Renesas ISL29501-ST-EV1Z User Manual

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ISL29501-ST-EV1Z
Sand Tiger User Guide
Description
The ISL29501-ST-EV1Z is a distance measurement reference
design. It combines the
ISL29501
4550 IR emitting LED and OSRAM SFH 213FA photodiode. The
circuit board is enclosed in an opaque plastic chassis designed
to optically isolate components. Included is a USB flash drive
containing the evaluation software for a PC and related
technical documents.
The ISL29501-ST-EV1Z board also allows quick evaluation of
the ISL29501 performance for a 2m sensing system.
Specifications
This board has been configured and optimized for the following
operating conditions:
• Micro USB 2.0 connection
• V
= 5V (USB Power)
IN
• I
maximum = 225mA
DD
• P optical maximum = 70mW
• Wavelength = 860nm
• Optical duty cycle maximum = 50%
• Emission angle = ±3°
• Coherent light - No
USB 5V
LDO
8051
HOST
CONTROLLER
UG055 Rev 0.00
October 7, 2015
chip with an OSRAM SFH
C
1
R
4
R
5
R
R
R
1
2
3
C
4
FIGURE 1. SAND TIGER BLOCK DIAGRAM
USER'S MANUAL
Key Features
• Self contained measurement system
• Enables proximity detection and distance measurement
• Emitter DAC with programmable current up to 255mA
• Operates in continuous or single shot mode
• On-chip active ambient light rejection
• Regulated power 2.7V to 3.3V USB or external supply
2
• I
C interface supporting 1.8V and 3.3V bus
References
•
ISL29501
Datasheet
• AN1966, "ISL29501 Sand Tiger Optics Application Note"
• AN1917, "ISL29501 Layout Design Guide"
• UG054, "ISL29501 Evaluation Software User Guide"
• AN1967, "Temperature and Ambient Light Data Collection"
Ordering Information
PART NUMBER
ISL29501-ST-EV1Z
ISL29501 Sand Tiger demonstration kit,
(EVB, USB cable, software, technical
documentation)
2.7V TO 3.3V
DVCC
EVCC
EIR
DVSS
IR
LED
EVSS
A1
A2
ISL29501
PDp
SCL
PD
SDA
PDn
IRQ
SS
AVCC
CEn
VOUT
AVSS
RSET
AVDD
R
UG055
Rev 0.00
October 7, 2015
DESCRIPTION
C 2
C
3
4
Page 1 of 15

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Summary of Contents for Renesas ISL29501-ST-EV1Z

  • Page 1 • On-chip active ambient light rejection technical documents. • Regulated power 2.7V to 3.3V USB or external supply The ISL29501-ST-EV1Z board also allows quick evaluation of • I C interface supporting 1.8V and 3.3V bus the ISL29501 performance for a 2m sensing system.

  • Page 2: Functional Description

    Functional Description MAGNITUDE CALIBRATION Magnitude calibration is done after the emitter current and duty The ISL29501-ST-EV1Z is both a reference design and cycle settings are programmed. It is a dark (no light) calibration demonstration board that provides a single platform to that takes less than 1s to run.

  • Page 3: Pcb Layout Guidelines

    ISL29501-ST-EV1Z PCB Layout Guidelines Changing Settings The ISL29501-ST-EV1Z PCB layout has been optimized for Once the board is running and making measurements, the user electrical and thermal performance. Care needs to be placed in may want to change settings. The user has the ability to change decoupling circuits and noise isolation.
  • Page 4 ISL29501-ST-EV1Z ISL29501-ST-EV1Z Demonstration Board FIGURE 4. SAND TIGER BOARD TOP SIDE FIGURE 5. SAND TIGER BOARD BOTTOM SIDE NOTE: Visible on the bottom side of the board are the emitter LED and photodiode. Each is surrounded by a brass tube. These tubes are grounded and serve as terminators for any electric fields.
  • Page 5 ISL29501-ST-EV1Z Circuit Schematics Green side Amber side 90-Ohm DIFF Pair +5V USB POWER I2C_EN FIGURE 6. SAND TIGER SCHEMATIC CONTROL SHEET...
  • Page 6 ISL29501-ST-EV1Z Circuit Schematics (Continued) USB Power: Jump 1 to 2 (default) External Power: Jump 3 to 2 2.6V-3.4V 0.7V 1.7V SFH4550 Either stuff R37 or R38. Engineering use R38 Ref. boards use R37 POWER SELECT JUMPERS for ISL29501 FIGURE 7. SAND TIGER SCHEMATIC - ISL29501 AND POWER...
  • Page 7 ISL29501-ST-EV1Z ISL29501-ST-EV1Z Bill of Materials MANUFACTURER PART UNIT REFERENCE DESIGNATOR DESCRIPTION MANUFACTURER ISL29501-ST-EV1ZREVCPCB PWB-PCB-ISL29501-ST-EV1Z, REVC, ROHS TBD 0402YA101KAT2A C19, C31, C32 CAP, SMD, 0402, 100pF, 16V, 10%, NP0, ROHS AMK105BJ335MV-F CAP, SMD, 0402, 3.3µF, 4V, 20%, X5R, TAIYO YUDEN ROHS...
  • Page 8 ISL29501-ST-EV1Z ISL29501-ST-EV1Z Bill of Materials (Continued) MANUFACTURER PART UNIT REFERENCE DESIGNATOR DESCRIPTION MANUFACTURER ISL80101AIRAJZ IC-1A LDO ADJ.VOLT REGULATOR, 10P, INTERSIL DFN, 3x3, ROHS TPD4S012DRYR IC-TVS, 4-CHANNEL ESD SOLUTION, 6P, TEXAS INSTRUMENTS SON6, ROHS CR0402-16W-1000FT RES, SMD, 0402, 100Ω, 1/16W, 1%, TF,...
  • Page 9 ISL29501-ST-EV1Z Chassis Bill of Materials MANUFACTURER PART QTY UNIT REFERENCE DESIGNATOR DESCRIPTION MANUFACTURER ISL29501-ST-EV1ZFG ASSY INSTRUCTIONS PWB-FG, ISL29501-ST-EV1Z, ROHS INTERSIL 92185A105 PCB TO CHASSIS BOTTOM SCREW, 4-40x3/16in, SOCKET HEAD, CAP, SS, MCMASTER-CARR ROHS 29501-01-08 SANDTIGER-CHASSISBOTTOM CHASSIS BOTTOM, 2.5x2.5, ACETAL PROTOLABS...
  • Page 10 ISL29501-ST-EV1Z Board Layout - 4 Layers FIGURE 8. TOP LAYER UG055 Rev 0.00 Page 10 of 15 October 7, 2015...
  • Page 11 ISL29501-ST-EV1Z Board Layout - 4 Layers (Continued) FIGURE 9. PCB – LAYER 2 (VIEWED FROM TOP) UG055 Rev 0.00 Page 11 of 15 October 7, 2015...
  • Page 12 ISL29501-ST-EV1Z Board Layout - 4 Layers (Continued) FIGURE 10. PCB – LAYER 3 (VIEWED FROM TOP) UG055 Rev 0.00 Page 12 of 15 October 7, 2015...
  • Page 13 ISL29501-ST-EV1Z Board Layout - 4 Layers (Continued) FIGURE 11. PCB – BOTTOM LAYER (VIEWED FROM TOP) The measured distance will drift with changes in temperature as shown in Figure 14 on page 14. The ISL29501 has temperature compensation built into the chip. This is an advanced calibration, which involves collecting temperature vs.

  • Page 14: Typical Performance Curves

    ISL29501-ST-EV1Z Typical Performance Curves USB Powered V = 5V, V = 3.3V, T = +25°C, Sample size = 5, integration time = 140ms. 0.08 0.06 0.04 0.02 -0.02 -0.04 -0.06 -0.08 ACTUAL DISTANCE (m) ACTUAL DISTANCE (m) FIGURE 12. MEASURED vs ACTUAL DISTANCE FIGURE 13.

  • Page 15: Sales Offices

    10. It is the responsibility of the buyer or distributor of Renesas Electronics products, or any other party who distributes, disposes of, or otherwise sells or transfers the product to a third party, to notify such third party in advance of the contents and conditions set forth in this document.

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