INFINEON TDK5100F User Manual

Data Sheet, V 1.1, November 2005

TDK5100F

434 MHz ASK/FSK Transmitter in 10-pin Package

Wireless Control Components

Never stop thinking.

Edition 2005-11-14 Published by In fineon Technologies AG,

St.-Martin-Strasse 53, 81669 München, Germany

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Data Sheet, V 1.1, November 2005

TDK5100F

434 MHz ASK/FSK Transmitter in 10-pin Package

Wireless Control Components

Never stop thinking.

TDK5100F Revision History: 2005-11-14 V 1.1

Previous Version: none Page Subjects (major changes since last revision)

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TDK5100F

Table of Contents Page

1 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.1 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2 Pin Definition and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.3 Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.4 Functional Block Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.4.1 PLL Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.4.2 Crystal Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.4.3 Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.4.4 Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.4.4.1 Power Down Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.4.4.2 PLL Enable Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.4.4.3 Transmit Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.4.4.4 Power mode control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.4.5 Recommended Timing Diagrams for ASK- and FSK-Modulation . . . . . 16

3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.1 50 Ohm-Output Testboard Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.2 50 Ohm-Output Testboard Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.3 Bill of Material (50 Ohm-Output Evalboard) . . . . . . . . . . . . . . . . . . . . . . . . 21

3.4 Stripline-Antenna Testboard Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.5 Stripline-Antenna Testboard Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.6 Bill of Material (Antenna board) FSK modulation . . . . . . . . . . . . . . . . . . . . 24

3.7 Application Hints on the Crystal Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.8 Design Hints on the Clock Output (CLKOUT) . . . . . . . . . . . . . . . . . . . . . . 27

3.9 Application Hints on the Power-Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4 Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4.1 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4.1.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4.2 Operating Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.3 AC/DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.3.1 AC/DC Characteristic at 3V, 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.3.2 AC/DC Characteristic at 2.1V ...4.0 V, -40°C ...+125°C . . . . . . . . . . . . 33

5 Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Data Sheet 5 V 1.1, 2005-11-14

TDK5100F

Product Description

1 Product Description

1.1 Overview

The TDK 5100 F is a single chip ASK/F SK transmitter for ope ration in the frequ ency band 433-435 MHz. The IC offers a high level of integration and needs only a few external components. The device conta ins a fully integr ated PLL synthes izer and a hig h efficiency power amplifier to drive a loop antenna. A special circuit design and an unique power amplifier design are use d to save curre nt consump tion and there fore to save ba ttery life. Additional features are a power down mode and a divided clock output.

1.2 Features

• fully integrated frequency synthesizer

• VCO without external components

• ASK and FSK modulation

• frequency range 433-435 MHz

• high efficiency power amplifier (typically 5 dBm)

• low supply current

• voltage supply range 2.1 ... 4 V

• temperature range −40 ... +125°C

• power down mode

• crystal oscillator 13.56 MHz

• FSK-switch

• divided clock output for µC

• low external component count

1.3 Application

• Tire pressure monitoring systems

• Keyless entry systems

• Remote control systems

• Alarm syst ems

• Communication systems

Data Sheet 6 V 1.1, 2005-11-14

2 Functional Description

2.1 Pin Configurat ion

TDK5100F

Functional Description

CLKOUT

GND

FSKOUT

COSC

TDK 5100F

PDWN

PAOUT

PAGND

FSKDTA

ASKDTA

Figure 1 IC Pin Configuration

2.2 Pin Definition and Functions

Table 1 Pin Definition and Functions - Overview Pin

No.

1 CLKOUT Clock Driver Output (847.5 kHz) 2 VS Voltage Supply 3 GND Ground 4 FSKOUT Frequency Shift Keying Switch Output 5 COSC Crystal Oscillator Input (13.56 MHz) 6 ASKDTA Amplitude Shift Keying Data Input 7 FSKDTA Frequency Shift Keying Data Input 8 PAGND Power Amplifier Ground 9 PAOUT Power Amplifier Output (434 MHz) 10 PDWN Power Down Mode Control

Symbol Function

Data Sheet 7 V 1.1, 2005-11-14

TDK5100F

Functional Description

Table 2 Pin Definition and Function Pin

Symbol Interface Schematic Function

No.

1 CLKOUT Clock output to supply an external

device. An external pull-up resisto r has to be added in accordance to the driving requirements of the

300 Ω

external device. The clock frequenc y is 847.5 kHz .

2 VS This pin is the positive supply of

the transmitter electronics. An RF bypass capaci tor should be connected directly to this pin and returned to GND (pin 3) as short

as possible. 3 GND General ground connecti on. 4 FSKOUT This pin is connec ted to a switch to

GND (pin 3).

The switch is closed when the

signal at FSKDTA (pin 7) is in a

200 µA

logic low state.

The switch is open w hen the signal

at FSKDTA (pin 7) is in a l ogic high

120 kΩ 200 kΩ

state.

FSKOUT can switch an ad dition al

capacitor to the reference crystal

network to pull the crystal

frequency by an amount resulting

in the desired FSK freque ncy s hift

of the transmitter output

frequency.

Data Sheet 8 V 1.1, 2005-11-14

TDK5100F

Functional Description

Symbol Interface Schematic Function

No.

5 COSC This pin is connected to the

6 kΩ

100 µA

6 ASKDTA Digital amplitude modulation can

+1.2 V

60 k

90 k

Ω

50 pF 30 µA

reference oscillator circuit.

The reference oscillat or is working

as a negative impedance

converter. It presents a negative

resistance in series to an

inductance at the COSC pin.

be imparted to the Power Amplifier

through this pin.

A logic high (ASKDTA > 1.5 V or

+1.1 V

open) enables the Power

Amplifier.

A logic low (ASKDTA < 0.5 V)

disables the Power Amplifier.

Data Sheet 9 V 1.1, 2005-11-14

TDK5100F

Functional Description

Symbol Interface Schematic Function

No.

7 FSKDTA Digital frequency modulation can

+1.2 V

Ω

90 k

60 k

Ω

30 µA

be imparted to the Xtal Oscillator

by this pin. The VCO-frequency

varies in accordance to the

frequency of the reference

oscillator.

+1.1

A logic high (FSKDTA > 1.5V or

open) sets the FSK switch to a

high impedance state.

A logic low (FSKDTA < 0.5 V)

closes the FSK switch from

FSKOUT (pin 4) to GND (pin 3).

A capacitor can be s witched to the

reference crystal network this way.

The Xtal Oscillator frequency will

be shifted giving the desi gned FSK

frequency deviation.

Data Sheet 10 V 1.1, 2005-11-14

TDK5100F

)

Functional Description

Symbol Interface Schematic Function

No.

8 PAGND Ground connection of the power

amplifier.

The RF ground return path of the

power amplifier output PAOUT

(pin 9) has to be concentrated to

this pin. 9 PAOUT RF output pin of the transmitter.

10 PDWN Disable pin for the complete

40 µA ∗ (ASKDTA+FSKDTA

5 kΩ

150 kΩ

250 kΩ

"ON"

A DC path to the positive supply

VS has to be supplied by the

antenna matching network.

transmitter circuit.

A logic low (PDWN < 0.7 V) turns

off all transmitter functions.

A logic high (PDWN > 1.5 V) gi ves

access to all transmitter functions.

PDWN input will be pulled up by

40 µA internally by either setting

FSKDTA or ASKDTA to a logic

high-state.

1) Indicated voltages and currents apply for PLL Enable Mode and Transmit Mode.

In Power Down Mode, the values are zero or high-ohmic.

Data Sheet 11 V 1.1, 2005-11-14

2.3 Functional Block Diagram

TDK5100F

Functional Description

Power

ASK

FSK

Supply

Down

Control

Data

Input

Data

Input

Power

Output

Amplifier

Ground

Amplifier

AMP

Power

Supply

Ground

10 2

PFD :64 VCO :2

:16

Clock

Output

Osc

XTAL

FSK

Switch

Crystal

13.56 MHz

Figure 2 Functional Block Diagram

Data Sheet 12 V 1.1, 2005-11-14

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