MLX90121 datasheet(4/26 Pages) MELEXIS

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MLX90121

13.56MHz RFID Transceiver

3901090121

Page 4 of 26

Data Sheet

Rev. 007

Jan-2008

6. MLX90121 Specific Specifications

DC Operating Parameters TA = -40

oC to 85oC, or 0oC to +70oC according to the version, V

DD = 5V (unless

otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Transmitter specifications

Peak voltage applied on drain of

output transistor

Output transistor power dissipation

With heat sink

600

Output transistor ON resistance

Id = 50 mA

Ω

Output power for five volts

operation

See note 1

250

Amplitude modulation depth

adjustment range, in 10% mode,

with external resistor connected

between RMOD pin and ground.

See note 1

Amplitude modulation depth in

10% mode with nominal external

resistor (10

Ω)

See note 1

Minimum depth for 100% ASK

See note 1

Rise time for 100% ASK

50 Ohms load - 5% to 60%

50 Ohms load - 5% to 90%

0.2

0.3

0.4

1.5

Fall time for 100% ASK

50 Ohms load - 100% to 5%

0.6

Rise and fall time for 10%

modulation depth ( nominal

external resistor used)

50 Ohms load

0.2

Receiver specifications

Small signal input impedance (RX)

100

Ω

Input RF voltage range (RX – VSS)

With 4.7k

Ω series external resistor

Vpp

Receiver sensitivity

See note 2

-35

-45

dBm

FSK IF filter cut off points

200-1400

kHz

Gain, in FSK mode (FM output)

120

Gain, in ASK mode (AM output)

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