R

EM4100

Copyright © 2004, EM Microelectronic-Marin SA

3

www.emmicroelectronic.com

Electrical Characteristics

Parameter

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Supply Voltage

Rectified Supply Voltage

Coil1 - Coil2 Capacitance

Power Supply Capacitor

Modulator switch = “ON”

f=10kHz

1.5

1.5

120

1)

V

V

pF

pF

Biphase & Manchester

Versions

Supply Current

C2 pad Modulator ON

voltage drop

C1 pad Modulator ON

voltage drop

0.9

2.1

2.1

0.63

1.1

2.3

2.3

1.5

1.3

2.8

2.8

µA

V

V

V

PSK Version

Supply Current PSK

C2 pad Modulator ON

voltage drop

0.3

0.92

0.6

2

0.9

µA

V

Note 1)

The maximum voltage is defined by forcing 10mA on COIL1 - COIL2

Note 2)

The tolerance of the resonant capacitor is ± 15% over the whole production.

Optional reduced tolerance on request

On a wafer basis, the tolerance is ± 2%

Timing Characteristics

Timings are derived from the field frequency and are specified as a number of RF periods.

Parameter

Symbol

Test Conditions

Value

Units

Read Bit Period

depending on option

64, 32, 16

RF periods

Timing Waveforms

BIT n

BIT n+1

BIT n+2

64, 32 or 16 T

T

OC

COIL1

Serial Data Out

Fig. 4