RFW322-M - Vishay - Datasheet.Directory

Vishay RFWaves

RFW322-M

Document Number 81218

Rev. 1.0, 16-Nov-05

www.vishay.com

For more information please contact: RFTransceivers@vishay.com

RFW322-M Transceiver Module

FEATURES

• Designed for short range wireless communication

in the 2.4 GHz - world wide license free band

• Data rate - up to 3 mbit/s

• Simple 3 line digital interface

• Low power consumption - ideal for battery operated

devices

• + 6 dBm typical peak output transmission power

• - 73 dBm typical sensitivity

• Complies with FCC regulations

• Wide range operating voltage (2.6 - 3.5 V)

• Unique Direct Sequence Spread Spectrum Code

• Short signal acquisition time (1.2 µs)

The company’s products are covered by one or more

of the following:

Taiwan Patent No. 155994, Taiwan Patent No.

176767, USA Patent No. 6,535,545. Other patents

pending

DESCRIPTION

The RFW322-M ISM Transceiver Module is a short-

range wireless radio transceiver, designed by Vishay

RFWaves*. The transceiver is intended for use in the

world wide unlicensed Industrial, Scientific and Medi-

cal (ISM) band of 2400 - 2483.5 MHz, complying with

worldwide regulations and standards.

The module core consists of 2 chips, offering small

size, low power consumption and simple integration

with applications.

The module antenna interface reflects a 200 Ω differ-

ential impedance.

Module has 3 digital control lines. The data I/O line is

a serial interface. RFW322-M the transceiver was

designed for low power consumption. During standby,

the transceiver almost does not consume any power

(0.1 µA at Vcc = 3 V). It features a very short wakeup

time of 20 µs, and the signal acquisition time is only 1.2 µs.

Thus, by using the standby mode in a frequent man-

ner, an efficient power consumption management

method can be applied.

The communication link between the transceivers is

based on a unique Direct Sequence Spread Spectrum

(DSSS) pulse pipe. The modulation scheme is 100 %

Amplitude Shift Keying (ASK).

The module interface has 12 pads and is soldered on

a motherboard PCB like a regular SMT component.

* Vishay Advanced Technologies ltd. -

RFWaves division

www.vishay.com

Document Number 81218

Rev. 1.0, 16-Nov-05

Vishay RFWaves

RFW322-M

For more information please contact: RFTransceivers@vishay.com

PIN OUT AND MECHANICAL DIMENSIONS in millimeters

Stresses exceeding those listed under "Absolute Maximum Rating" may cause permanent damage to the devices. These are stress ratings only,

and functional operation of the devices at these or any other conditions, beyond those indicated in the operational sections of the datasheet, is

not implied. Exposure to absolute maximum rating conditions for extended periods may affect devices reliability.

Top View

16.1

1234

789

19579

PINOUT

1 VCC RF 7 TX/RX

2 ACT 8 TXD/RXD

3 VCC PD 9 VCC GD

4 GND 10 VCC OSC

5GND11RF1

6 RSSI 12 RF2

MECHANICAL DIMENSIONS (mm)

Overall length 16.1

Overall width 11

PCB thickness 0.6

Max overall thickness 2.5

ABSOLUTE MAXIMUM RATING

PARAMETER MIN MAX UNIT

Supply voltage - 0.3 6.0 V

All input or output voltages with respect to ground - 0.3 Vcc + 0.3 V

Temperature under bias - 10 70 °C

Storage temperature - 60 100 °C

Digital output short-circuit duration (to GND) continues

These devices have limited built-in ESD protection. The leads should be shorted together

or the device placed in conductive foam during storage or handling to prevent electrostatic

damage to the I/O buffers.

Life Support Policy and Use in Safety-Critical Applications

Vishay RFWaves’ products are not authorized for use in life-support or

saftey-critical applications.

Document Number 81218

Rev. 1.0, 16-Nov-05

www.vishay.com

Vishay RFWaves

RFW322-M

For more information please contact: RFTransceivers@vishay.com

* ESD protected pin.

TRANSCEIVER INTERFACE The RFW322-M transceiver includes the following 12 pads interface.

NAME CHARACTERISTIC

VCC GD Transmitter pulse generator power supply input. A regulated voltage of 2.6 - 3.5 Volts.

VCC RF RF amplifier power supply input. A regulated voltage of 2.6 - 3.5 Volts.

VCC OSC Oscillator power supply input. A regulated voltage of 2.6 - 3.5 Volts.

VCC PD Receiver peak detector power supply input. A regulated voltage of 2.6 - 3.5 Volts.

GND Apply the supply ground to this pin.

Tx/Rx* Mode selection input. Apply Vcc for transmit mode.

Apply 0 V (GND) for receive mode.

ACT* Apply 0 V (GND) for standby mode.

Apply Vcc to this pin to turn the module on.

It typically takes the module 20 µs to wake up into a fully operational mode.

CMOS-level pin.

TxD/RxD* In Tx mode this is an input pin, positive edge trigger. Every time TxD goes from GND to

Vcc, a spread bit is transmitted.

In Rx mode this is an output pin.

CMOS-level pin.

RSSI When used, reflects the average RF power detected by the receiver.

Connect to the RSSI port in the RFW-D100 or any equivalent interface.

RF1 / RF2 Connect a 200 ohm differential impedance antenna to this port, or a proper matching

circuit to any other antenna.

ELECTRICAL CHARACTERISTICS TA = 25 °C, VCC = 2.7 V to 3.3 V, unless otherwise specified.

PARAMETER TEST CONDITIONS SYMBOL MIN TYP. MAX UNIT

Supply voltage (All 3 ports) VCC 2.6 3.3 3.5 V

Operating ambient temperature Ta0 + 25 + 50 °C

Current consumption in standby

mode

ACT = GND

I/O = High Z at Vcc = 3 V

Ishdn 0.1 µA

Wakeup time Twa 20 µs

All input pins (TxD/RxD, ACT, Tx/Rx)

Rise time Tr8 1000 ns

Fall time Tf8 1000 ns

Input capacitance Cin 10 PF

ACT

Logic high input Vih act Vcc - 0.8 Vcc V

Logic low input Vil act GND 0.8 V

Sink current ACT = Vcc Isi_act 24 50 µA

Source current ACT = GND Isrc_act 1µA

Tx/Rx

Logic high input Vih tr Vcc - 0.8 Vcc V

Logic low input Vil tr GND 0.8 V

Source current Isrc_tr 1µA

Sink current ACT = GND Isi_shdn 1µA

TxD/RxD

Source current in standby and

transmit mode

ACT = GND Isrc_shdn 1µA

Sink current in standby and

transmit mode

ACT = GND Isi_shdn 1µA

Transmit to receive transition

time

Tt_to_r 2.5 µs

Receive to transmit transition

time

Tr_to_t 2.5 µs

Bit rate 3Mb/s

www.vishay.com

Document Number 81218

Rev. 1.0, 16-Nov-05

Vishay RFWaves

RFW322-M

For more information please contact: RFTransceivers@vishay.com

(1) When transmitting a uniform distribution of ‘1’ and ‘0’ bits. This assupmtion is not relevant in 3 Mbps!

(2) Depends on test platform.

RECEIVER CHARACTERISTICS TA = 25 °C, VCC = 2.7 V to 3.3 V, unless otherwise specified.

PARAMETER TEST CONDITIONS SYMBOL MIN TYP. MAX UNIT

Signal acquisition time Tacq 1.2 1.5 µs

Sensitivity at BER = 10-3 Sens - 73 - 70 dBm

peak

RxD

Output voltage high 1 mA load sync current RxDVH Vcc - 0.8 Vcc V

Output voltage low 1 mA load source

current

RxDVL 0 0.8 V

Output capacitance Cout 10 pF

Pulse length Tpw ns

Current consumption

RF power at antenna port

< - 40 dBm peak

Bit rate = 3 Mb/s Is 34 mA

Emission level between 30 MHz

and 1 GHz

- 57 dBm

Emission level between 1 GHz and

12.75 GHz

- 47 dBm

RSSI

Allowed source current Isrc RS 50 nA

Allowed sink current Isi_RS 50 nA

Allowed load capacitance CIo RS 20 pf

Output voltage V_SAT 0.4 1.2 V

Voltage to received power slope V to P 6 mV / dB

TRANSMITTER CHARACTERISTICS T = 25 °C, VCC = 2.7 V to 3.3 V, unless otherwise specified.

PARAMETER TEST CONDITIONS SYMBOL MIN TYP. MAX UNIT

Transmit power peak Poutmax 26 dBm

TxD

Logic high input Vih d Vcc - 0.8 Vcc V

Logic low input Vil d GND 0.8 V

Source current Isrc_di 1µA

Sink current Isi_di 1µA

Pulse length Tdil 20 Not limited ns

Current consumption Bit rate = 3 Mb/s(1) Is 34 mA

Current consumption - No data

transmitted

TxD/RxD = 0 Isnd 7 mA

Bandwidth at - 10 dBc BW 30 MHz

Out of band spurious

(> 1 GHz)(2)

at RBW = 1 MHz;

at VBW = 1 MHz

Spur - 20 dBm

Time from data into output

power

Td400 450 500 ns

Central frequency Cf 2.439 2.440 2.441 GHz

Document Number 81218

Rev. 1.0, 16-Nov-05

www.vishay.com

Vishay RFWaves

RFW322-M

For more information please contact: RFTransceivers@vishay.com

FOOTPRINT

The following diagram shows the physical footprint of

the RFW322-M module, which should be implement-

ed.

***Note: The pcb area under the module (CS layer

only) must be considered as void and not include any

conducting metal.

**All figures are in mm units. Measurements are taken from the middle of the solder pads.

NOTICE

Specifications of the products displayed herein are

subject to change without notice. Vishay Intertechnol-

ogy, Inc., or anyone one its behalf, assumes no

responsibility or liability for any errors or inaccuracies.

Information contained herein is intended to provide a

product description only. No license, express or

implied, by estoppel or otherwise, to any intellectual

property rights is granted by this document. Except as

provided in Vishay’s terms and conditions of sale for

such products, Vishay assumes no liability whatso-

ever, and disclaims any express or implied warranty,

relating to sale and/or use of Vishay products including

liability or warranties relating to fitness for a particular

purpose, merchantability, or infringement of any

patent, copyright, or other intellectual property right.

The products shown herein are not designed for use in

medical, life-saving, or life-sustaining applications.

Customers using or selling these products for use in

such applications do so at their own risk and agree to

fully indemnify Vishay for any damages resulting from

such improper use or sale.

Footprint

3.3

2 14 3

97 8

3.1 44.1 0.9

2.2

5.4

2.8

8.3

1.6

0.2

1.3

1.7

1.4

0.9

1.1

Pad Dimensions

19580

Legal Disclaimer Notice

Vishay

Document Number: 91000 www.vishay.com

Revision: 08-Apr-05 1

Notice

Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,

or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.

Information contained herein is intended to provide a product description only. No license, express or implied, by

estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's

terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express

or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness

for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.

The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.

Customers using or selling these products for use in such applications do so at their own risk and agree to fully

indemnify Vishay for any damages resulting from such improper use or sale.