DVK90121

DVK90121 Datasheet

Part	Datasheet
DVK90121	DVK90121 (pdf)

Related Parts	Information
EVB90121	EVB90121

PDF Datasheet Preview
EVB90121 MLX90121 Evaluation Board Output power up to 200miliwatts Complies with standard ISO15693 and ISO 14443 protocols Programmable encoder for custom protocol Short to medium reading range applications Matching network optimized for 50 ohm antenna impedance 10 pins connector for communication with a microcontroller Board voltage supplied by a jack connector from 6 to 9 Volts DC Internal power supply of the board between 3 Volts and 5 Volts DC Ordering Information Part No. EVB90121 Applications Examples Freight identification systems Smart labels and write systems Access control systems Evaluation Board EVB90121 The EVB90121 is an assembled module that allows to evaluate the advantages of the MLX90121 13MHz transceiver IC and to facilitate the development of RFID applications. The board voltage is supplied by a jack connector from 6 to 9 Volts DC. The internal power supply of the board can be chosen between 3 Volts and 5 Volts DC by putting the corresponding jumper up or down. A suppression choke reduces the supply noise. The matching network can be adjusted through CV1 capacitor and thus can be optimized to transmit full electromagnetic power up to 200mWatt to a 50-ohm load antenna connected on a SMA connector. All digital inputs/outputs from the MLX90121 are connected to a standard 10 pins connector. This allows easy connection to a microcontroller. Page 1 of 8 Evaluation Board Jan/07 EVB90121 MLX90121 Evaluation Board Table of Contents 2 PHYSICAL OUTLINE 4 3 COMPONENTS 5 4 GUIDELINES 6 POWER SUPPLY 6 ANTENNA 6 CONNECTION TO A MICROCONTROLLER 6 DIGITAL CONNECTOR 7 ANALOGUE OUTPUTS 7 Page 2 of 8 Evaluation Board Jan/07 Evaluation Board Jan/07 Figure 1 Schematic of the evaluation board EVB90121 Page 3 of 8 J1 JACK 5 VOLTS 3 VOLTS VK200 1 Vdd XC62FP SOT-89 U2 XC6201 SOT89 7K5 R2 4K7 OUT 3 OUT 1 Supply JUMPER 10uF/tantale 10uF/tantale 10uF/tantale 2 1 GND 1 2 GND 3 2 1 TP2 Ant Antenna TP3 1 Gnd 4.7uH

PDF Datasheet Preview

EVB90121

MLX90121 Evaluation Board

Output power up to 200miliwatts Complies with standard ISO15693 and ISO 14443 protocols Programmable encoder for custom protocol Short to medium reading range applications Matching network optimized for 50 ohm antenna impedance 10 pins connector for communication with a microcontroller Board voltage supplied by a jack connector from 6 to 9 Volts DC Internal power supply of the board between 3 Volts and 5 Volts DC
Ordering Information

Part No. EVB90121

Applications Examples

Freight identification systems Smart labels and write systems Access control systems

Evaluation Board EVB90121

The EVB90121 is an assembled module that allows to evaluate the advantages of the MLX90121 13MHz transceiver IC and to facilitate the development of RFID applications.

The board voltage is supplied by a jack connector from 6 to 9 Volts DC. The internal power supply of the board can be chosen between 3 Volts and 5 Volts DC by putting the corresponding jumper up or down. A suppression choke reduces the supply noise. The matching network can be adjusted through CV1 capacitor and thus can be optimized to transmit full electromagnetic power up to 200mWatt to a 50-ohm load antenna connected on a SMA connector.

All digital inputs/outputs from the MLX90121 are connected to a standard 10 pins connector. This allows easy connection to a microcontroller.

Page 1 of 8

Evaluation Board Jan/07

EVB90121

MLX90121 Evaluation Board

Table of Contents
2 PHYSICAL OUTLINE 4
3 COMPONENTS 5
4 GUIDELINES 6

POWER SUPPLY 6 ANTENNA 6 CONNECTION TO A MICROCONTROLLER 6 DIGITAL CONNECTOR 7 ANALOGUE OUTPUTS 7

Page 2 of 8

Evaluation Board Jan/07

Evaluation Board Jan/07

Figure 1 Schematic of the evaluation board EVB90121 Page 3 of 8

J1 JACK
5 VOLTS
3 VOLTS

VK200
1 Vdd

XC62FP SOT-89

U2 XC6201 SOT89
7K5 R2 4K7

OUT 3

OUT 1

Supply JUMPER
10uF/tantale
10uF/tantale
10uF/tantale
2 1 GND
1 2 GND 3 2 1

TP2 Ant

Antenna

TP3 1 Gnd
4.7uH

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived DVK90121 Datasheet file may be downloaded here without warranties.

Datasheet ID: DVK90121 647783