ASDL-3023-028 Lite-On Electronics, ASDL-3023-028 Datasheet

Page 1

... Data Compliant Low Power 4Mbit/s with Remote Control Infrared Transceiver Data Sheet Description The ASDL-3023 is a new generation low profile high speed enhanced infrared (IR) transceiver module that provides the capability of (1) interface between logic and IR signals for through-air, serial, half-duplex IR data link, and (2) IR remote control transmission for universal remote control applications ...

Page 2

... Vdd R1 Vdd (7) IOVCC(5) SD(4) CX5 RXD(3) VLED R2 LEDA (1) CX3 CX4 TxD_RC(6) TxD_IR(2) Figure 1a. Functional Block Diagram of ASDL-3023  GND CX2 CX1 GND (8) ASDL-3023 TRANSCEIVER MODULE TRANSCEIVER Regulated IC Voltage & Current Source RECEIVER Low Pass Filter AGC & Signal Reference Processor TRANSMITTER TXD_RC ...

Page 3

... Vdd R1 Vdd (7) IOVCC(5) SD(4) CX5 RXD(3) VLED R2 LEDA (1) CX3 CX4 TxD_RC(6) TxD_IR(2) Figure 1b. Functional Block Diagram of ASDL-3023-S21  GND CX2 CX1 GND (8) ASDL-3023 TRANSCEIVER MODULE TRANSCEIVER Regulated IC Voltage & Current Source RECEIVER Low Pass Filter AGC & Signal Reference Processor TRANSMITTER TXD_RC ...

Page 4

... Y = year W = work week LL = lot number ASDL-3023-021, ASDL-3023-008 and ASDL-3023-S21 Pinout, Rear View Rear View Figure 2a. Pin out for ASDL-3023-021 and ASDL-3023-008, Rear View (Shielded) Figure 2b. Pin out for ASDL-3023-S21 Notes: 1. Tied through external resistor, R2, to Vled. Refer to the table below for recommended series resistor value. 2. This pin is used to transmit serial data when SD pin is low. If held high for longer than 50 ms, the LED is turned off. Do NOT float this pin. ...

Page 5

... CX1, CX3, CX5 100 nF, ± 20%, X7R Ceramic CX2, CX4 4.7mF, ± 20%, Tantalum Notes: CX1, CX2, CX3 & CX4 must be placed within 0.7cm of ASDL-3023 to obtain optimum noise immunity Absolute Maximum Ratings For implementations where case to ambient thermal resistance is ± 50°C/W. Parameter Symbol Storage Temperature ...

Page 6

Recommended Operating Conditions Parameter Operating Temperature Supply Voltage Input/Output Voltage Logic Input Voltage for TXD, Logic High SD/Mode Logic Low Receiver Input Irradiance Logic High Logic Low IR LED (Logic High) Current Pulse Amplitude – SIR Mode IR LED (Logic High) Current Pulse Amplitude – MIR/FIR Mode RC LED (Logic High) Current Pulse Amplitude Receiver Data Rate Ambient Light Note : 3. An in-band optical signal is a pulse/sequence where the peak wavelength, lp, is defined as 850 ≤ lp ≤ 900 nm, and the pulse characteristics are compliant with the IrDA Serial Infrared Physical Layer Link Specification v1.4.  Symbol Min. Typ. Max. T -25 + 2.4 3.6 CC ...

Page 7

Electrical and Optical Specifications Specifications (Min. & Max. values) hold over the recommended operating conditions unless otherwise noted. Unspeci- fied test conditions may be anywhere in their operating range. All typical values (Typ.) are at 25°C, Vcc set to 3.0V and IOVcc set to 1.5V unless otherwise noted. Receiver Parameter Viewing Angle Peak Sensitivity Wavelength RxD_IrDA Output Voltage Logic High V Logic Low V RxD_IrDA Pulse Width (SIR) [4, 5] RxD_IrDA Pulse Width (MIR) [4, 6] [4, 7] RxD_IrDA Pulse Width (Single) (FIR) [4, 7] RxD_IrDA Pulse Width (Double) (FIR) RxD_IrDA Rise & Fall Times [8] Receiver Latency Time [9] Receiver Wake Up Time Infrared (IR) Transmitter Parameter IR Radiant Intensity (SIR Mode) IR Radiant Intensity (MIR/FIR Mode) IR Viewing Angle IR Peak Wavelength TxD_IrDA Logic Levels ...

Page 8

Remote Control (RC) Transmitter Parameter RC Radiant Intensity RC Viewing Angle RC Peak Wavelength TxD_RC Logic Levels High Low TxD_RC Input Current High Low RC LED Anode On-State Voltage Transceiver Parameters Input Current High Low Supply Current Shutdown Idle (Standby) Active Note: [4] An in-band optical signal is a pulse/sequence where the peak wavelength, l are compliant with the IrDA Serial Infrared Physical Layer Link Specification version 1.4. [5] For in-band signals 115.2 kbit/s where 9 mW/cm2 ≤ EI ≤ 500 mW/cm2. [6] For in-band signals 1.152 Mbit/s where 22 mW/cm2 ≤ EI ≤ 500 mW/cm2. [7] For in-band signals 4 Mbit/s where 22 mW/cm2 ≤ EI ≤ 500 mW/cm2. [8] Latency is defined as the time from the last TxD_IrDA light output pulse until the receiver has recovered full sensitivity. [9] Receiver Wake Up Time is measured from Vcc power ON to valid RxD_IrDA output. ...

Page 9

Figure 5a. Timing Waveform - RXD Output Waveform Figure 5c. Timing Waveform – TXD “Stuck-on” Protection Waveform Figure 5e. Timing Waveform – TXD Wakeup Time Waveform  Figure 5b. Timing Waveform - LED Optical Waveform Figure 5d. Timing Waveform – ...

Page 10

... Package Dimension: ASDL-3023-021 (Shieldless, Front) and ASDL-3023-008 (Shieldless, Top) 0 ...

Page 11

... Package Dimension: ASDL-3023-S21 (Shielded, Front)  ...

Page 12

... Tape & Reel Dimensions ASDL-3023-021 (Shieldless, Front) ASDL-3023-008 (Shieldless, Top)  ...

Page 13

... ASDL-3023-S21 (Shielded, Front) Empty (40mm min) Detail A LABEL  Progressive Direction Parts Mounted (400mm min) Empty (40mm min) Option # "B" "C" Quantity 021 330 80 2500 S21 330 80 2500 008 330 80 2500 Unit: mm 2.0 ± 0.5 13.0 ± 0.5 R1.0 21 ± 0.8 Detail A ...

Page 14

... ASDL-3023 Moisture Proof Packaging All ASDL-3023 options are shipped in moisture proof package. Once opened, moisture absorption begins. This part is compliant to JEDEC Level 3. UNITS IN A SEALED MOISTURE-PROOF PACKAGE IS OPENED PARTS ARE NOT NO LESS THAN 30 RECOMMENDED TO AND LESS THAN BE USED NO RECOMMENDED BAKING CONDITIONS Figure 6. Baking Conditions Chart Recommended Storage Conditions Storage Temperature 10°C to 30°C ...

Page 15

... The tempera- tures are measured at the component to printed circuit board connections. In process zone P1, the PC board and ASDL-3023 pins are heated to a temperature of 150°C to activate the flux in the solder paste. The temperature ramp up rate, R1, is limited to 3°C per second to allow for even heating of both the PC board and ASDL-3023 pins ...

Page 16

... Appendix A: ASDL-3023 SMT Assembly Application Note Solder Pad, Mask and Metal Stencil Figure A1. Stencil and PCBA Recommended land pattern for ASDL-3023-021 1.55 0.775 FIDUCIAL 1.75 0.55 1.05 1.35 3.75 7.5 UNIT: mm Figure A2a. Recommended land pattern, ASDL-3023-021 Recommended land pattern for ASDL-3023- S21 1 ...

Page 17

... Aperture opening for shield pad is 2 1.5 mm(for ASDL- 3023-S1) as per land pattern. Compared to 0.127mm stencil thickness 0.11mm stencil thickness has longer length in land pattern extended outwardly from transceiver to capture more solder paste volume ...

Page 18

Appendix B: PCB Layout Suggestion The effects of EMI and power supply noise can potentially reduce the sensitivity of the receiver, resulting in reduced link distance. The PCB layout played an important role to obtain a good PSRR and EM immunity resulting in good electrical performance. Things to note: 1. The ground plane should be continuous under the part, but should not extend under the shield trace. 2. The shield trace is a wide, low inductance trace back to the system ground. CX1, CX2, CX3, CX4 and CX5 are optional supply filter capacitors; they may be left out if a clean power supply is used. 3. VLED can be connected to ...

Page 19

... Appendix C: General Application Guide for the ASDL-3023 infrared IrDA Compliant 4 Mb/s Transceiver. Description The ASDL-3023, a wide-voltage operating range infrared transceiver is a low-cost and small form factor device that is designed to address the mobile computing market such as PDAs, as well as small embedded mobile products such as digital cameras and cellular phones spectrally suited to universal remote control transmission function at 940 nm typically fully compliant to IrDA 1 ...

Page 20

... IOVCC GPIO IR_RXD GPIO IR_TXD 100Kohm GND Figure 3. ASDL-3023 configuration with general mobile architecture processor 0 Remote Control Operation The ASDL-3023 is spectrally suited to universal remote control transmission function at 940nm typically. Remote control applications are not governed by any standards, owing to which there are numerous remote codes in market ...

Page 21

... Appendix E: Window Design for ASDL-3023 Optical Port Dimensions for ASDL-3023 To ensure IrDA compliance, some constraints on the height and width of the window exist. The minimum dimensions ensure that the IrDA cone angles are met without vignetting. The maximum dimensions minimize the effects of stray light. The minimum size corresponds to a cone angle of 30° and the maximum size corresponds to a cone angle of 60°. OPAQUE MATERIAL Y IR TRANSPARENT WINDOW TRANSPARENT WINDOW TRANSPARENT Z WINDOW OPAQUE MATERIAL ...

Page 22

... W1 = 0.33* 0.66*T, where T is the window thickness and the refractive index of the window material is 1.586. The depth of the LED image inside the ASDL-3023 3.17mm. ‘A’ is the required half angle for viewing. For IrDA compliance, the minimum is 15° and the maximum is 30°. The equations result in the following tables and graphs. The graphs are plotted assuming that the thickness of the window is negligible. Module Depth ...

Page 23

Window Material Almost any plastic material will work as a window material. Polycarbonate is recommended. The surface finish of the plastic should be smooth, without any texture filter dye may be used in the window to make it ...

Page 24

... Appendix F: General Application Guide for the ASDL-3023 Remote Control Drive Modes The ASDL-3023 can operate in the single-TxD program- mable mode or the two-TxD direct transmission mode. Single-TxD Programmable Mode In the single-TxD programmable mode, only one input pin (TxD_IR input pin) is used to drive the LED in both IrDA mode as well as Remote Control mode of operation. ...

Page 25

Bandwidth Selection Timing The power on state should be the IrDA SIR mode. The data transfer rate must be set by a programming sequence using the TxD_IR and SD inputs as described below. Note: SD should not exceed the maximum, ...

Page 26

... Power-Up Sequencing To have a proper operation for ASDL-3023, the following power-up sequencing must be followed. (a) It’s strongly recommended that Vcc must come prior to IOVcc IOV not recommended to turn on IOVcc before Vcc while SD is low. However, for application that IOVcc come prior to Vcc while SD is low, SD pin has to set high to assure proper function- ality IOV CC SD (c) Setting IOVcc high before Vcc while SD is high is forbidden IOV CC SD For company and product information, please go to our web site: http://optodatabook.liteon.com/databook/databook.aspx Data subject to change. Copyright © ...