ASDL-3023-008

ASDL-3023

IrDA 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. The ASDL-3023 can be used

for IrDA as well as remote control application without the

need of any additional external components for multi-

plexing.

The ASDL-3023 is fully compliant to IrDA Physical Layer

specification version 1.4 low power from 9.6 kbit/s to 4.0

Mbit/s (FIR) and IEC825 Class 1 eye safety standards.

The ASDL-3023 can be shutdown completely to achieve

very low power consumption. In the shutdown mode, the

PIN diode will be inactive and thus producing very little

photocurrent even under very bright ambient light. It is

also designed to interface to input/output logic circuits as

low as 1.5V. These features are ideal for battery operated

mobile devices such as PDAs and mobile phones that

require low power consumption.

Features

General Features

•

Operating temperature from -25° C ~ 85°C

- Critical parameters are guaranteed over

temperature and supply voltage

•

Vcc Supply 2.4 to 3.6 V

•

Interface to Various Super I/O and Controller Devices

- Input/Output Interface Voltage of 1.5 V

•

Miniature Package

Miniature Package (shielded)

Height : 1.75 mm

Height : 1.95 mm

Width : 7.5 mm

Width : 8.0 mm

Depth : 2.75 mm

Depth : 3.00 mm

•

Moisture Level 3

•

Power Saving using 3 ILED range (SIR, MIR/FIR, RC

mode)

•

LED stuck high protection

•

High EMI Performance

•

High ESD Performance

•

Designed to Accommodate Light Loss with Cosmetic

Windows

•

IEC 825-Class 1 Eye Safe

Applications

Mobile data communication and universal remote control

•

Mobile Phones

•

PDAs

•

Digital Still Camera

•

Printer

•

Handy Terminal

•

Industrial and Medical Instrument

IrDA



Features

•

Fully Compliant to IrDA 1.4 Physical Layer Low Power

Specifications from 9.6 kbit/s to 4.0 Mb/s

- Link distance up to 30cm (minimum)

•

Complete shutdown

•

Low Power Consumption

- Low shutdown current

- Low idle current

Application Support Information

The Application Engineering Group is available to assist

you with the application design associated with ASDL-

3023 infrared transceiver module. You can contact them

through your local sales representatives for additional

details.

Remote Control Features

•

Wide angle and high radiant intensity

•

Spectrally suited to remote control transmission

function

•

Minimum peak wavelength of 880nm

•

2 RC Transmission Mode

- Single TXD (Programmable Mode)

- Dual TXD (Direct)



Vdd

R1

GND

CX2

Vdd

(7)

CX1

GND (8)

ASDL-3023 TRANSCEIVER

MODULE

IOVCC(5)

SD(4)

CX5

Regulated

Voltage &

Current

Source

TRANSCEIVER

IC

Photodetector

RECEIVER

RXD(3)

VLED

R2

Low Pass

Filter

AGC & Signal

Reference

Processor

Amplifier

Output½

Buffer

CX3

CX4

LEDA (1)

TXD_RC

Input

TXD_IR

Input

TRANSMIT

TER

TRANSMITTER

RC_Buffer

TxD_RC(6)

TxD_IR(2)

Eye

Safety-RC

Switched

Current

Source

IR_Buffer

LED

Eye

Safety-IR

Figure 1a. Functional Block Diagram of ASDL-3023



Vdd

R1

GND

CX2

Vdd

(7)

CX1

GND (8)

ASDL-3023 TRANSCEIVER

MODULE

IOVCC(5)

SD(4)

CX5

Regulated

Voltage &

Current

Source

TRANSCEIVER

IC

Photodetector

RECEIVER

RXD(3)

VLED

R2

Low Pass

Filter

AGC & Signal

Reference

Processor

Amplifier

Output

Buffer

SHIELD

CX3

CX4

LEDA (1)

TXD_RC

Input

TXD_IR

Input

TRANSMITTER

RC_Buffer

TxD_RC(6)

TxD_IR(2)

Eye

Safety-RC

Switched

Current

Source

LED

IR_Buffer

Eye

Safety-IR

TRANSMIT

TER

Figure 1b. Functional Block Diagram of ASDL-3023-S21



Order Information

Part Number

ASDL-3023-021

ASDL-3023-008

ASDL-3023–S21 (Shielded)

Packaging Type

Tape and Reel

Tape and Reel

Tape and Reel

Package

Front Option

Top Option

Front Option

Quantity

2500

2500

2500

Marking Information

The unit is marked with ‘XYWLL’ on the shield

Y = year

W = work week

LL = lot number

ASDL-3023-021, ASDL-3023-008 and ASDL-3023-S21

Pinout, Rear View

Rear View

I/O Pins Configuration Table

Pin

1

2

Symbol

LEDA

TxD_IR

RxD

SD

IOVCC

TxD_RC

VCC

GND

Description

LED Anode

IrDA transmitter data input.

IrDA receive data

Shutdown

Input/Output ASIC voltage

RC transmitter data input.

Supply Voltage

Ground

I/O Type

Input.

Active High

Output.

Active Low

Input.

Active High

Input.

Active High

Notes

Note 1

Note 2

Note 3

Note 4

Note 5

Note 6

Note 7

Note 8

8

7

6

5

4

3

2

1

Figure 2a. Pin out for ASDL-3023-021 and ASDL-3023-008,

Rear View

3

4

5

6

8

7

6

5

4

(Shielded)

3

2

1

7

8

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.

3. This pin is capable of driving a standard CMOS or TTL load. No external pull-up or pull-down resistor is required. The pin is in tri-state when the

transceiver is in shutdown mode

4. Complete shutdown of IC and PIN diode. The pin is used for setting IR receiver bandwidth, range of IR LED current and RC drive programming

mode. Refer to section on “Bandwidth Selection Timing” and “Remote Control Drive Modes” for more information. Do NOT float this pin. ***

5. Connect to ASIC logic controller supply voltage or Vcc. The voltage at this pin should be equal to or less than Vcc.

6. Logic high turns on the RC LED. If held high longer than 50 ms, the RC LED is turned off. Do NOT float the pin.

7. (i) Regulated, 2.4V to 3.6V

(ii) This pin recommended to turn on before other pin.

8. Connect to system ground.

4

Recommended Application Circuit Components

Component

R1

R2

Recommended Value

4.7W,±5%, 0.25 watt for Vcc ≤ 3.0V

2.7W, for 2.4 ≤ VLED ≤ 2.7V;

3.3W, for 2.7 <VLED ≤ 3.0V

3.9W, for 3.0 <VLED ≤ 3.3V

4.7W, for 3.3 <VLED ≤ 3.6V

5.6W, for 3.6 <VLED ≤ 4.2V

10W, for 4.2 <VLED ≤ 5V

100 nF, ± 20%, X7R Ceramic

4.7mF, ± 20%, Tantalum

Note

CX1, CX3, CX5

CX2, CX4

1

1

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

Storage Temperature

Operating Temperature

LED Anode Voltage

Supply Voltage

Input Voltage : TXD, SD/Mode

Output Voltage : RXD

Peak IR LED Current

Peak RC LED Current

Symbol

T

S

T

A

V

LEDA

V

CC

V

I

V

O

I

IRLED (PK)

I

RCLED(PK)

Min.

-40

-25

-0.3

-0.3

-0.3

-0.3

Max.

+100

+85

6.5

6

5.5

5.5

200

300

Units

°C

°C

V

V

V

V

mA

mA

Conditions

Ref

≤ 25% duty cycle, ≤ 90 ms pulse width Fig 3

≤ 10% duty cycle, ≤ 90 ms pulse width Fig 4

CAUTION: The CMOS INhereNT TO The deSIgN Of ThIS COMpONeNT INCreASeS The COMpONeNT’S SUSCepTIbIlITy TO

dAMAge frOM eleCTrOSTATIC dISChArge (eSd). IT IS AdvISed ThAT NOrMAl STATIC preCAUTIONS be TAkeN IN hANdlINg

ANd ASSeMbly Of ThIS COMpONeNT TO preveNT dAMAge ANd/Or degrAdATION whICh MAy be INdUCed by eSd