http://www.sames.co.za

PRELIMINARY

SA7121A

AC Operating Conditions

Clocking

Parameter

Symbol

Min

Typ

Max

Unit

Condition

RF carrier frequency at COIL1,2

50

125

300

kHz

Sustained RF from base station

Number of rf carrier cycles per bit

32

64

-

Coil Inputs

Parameter

Symbol

Min

Typ

Max

Unit

Condition

Negative excursion of COIL1 or

COIL2

-0.6

-0.65

-0.7

V

Peak level referenced to VSS

Modulated voltage drop

TBD

3.3

TBD

V

Unmodulated COIL1 or COIL2

5.5V

Modulated voltage drop

TBD

3.0

TBD

V

Unmodulated COIL1 or COIL2

=

5.0V

Modulated voltage drop

TBD

0.875

TBD

V

Unmodulated COIL1 or COIL2

= 2.5 V

Resonance Capacitor

1)

170

1)

pF

Measured between COIL1 and

COIL2

Note: 1) for a single batch the tolerance is ±3%. From batch to batch the tolerance is ±30%.

TBD - To be determined.

5/10