4 ______________________________________________________________________________________

280MHz to 450MHz Programmable

ASK/FSK Transmitter

DC ELECTRICAL CHARACTERISTICS (3V OPERATION) (continued)

and characterization over temperature, unless otherwise noted.)

AC ELECTRICAL CHARACTERISTICS (5V OPERATION)

= +125NC and guaranteed by design and characterization over temperature, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DIGITAL I/O

Input High Threshold

0.9 x

V

Input Low Threshold

0.1 x

V

Input Pulldown Sink Current

5

F

A

Input Pullup Source Current

1.3

F

A

Output-Voltage High

gp1bst bit = 0)

- 0.10

V

(gp1bst bit = 1)

- 0.14

Output-Voltage Low

GPO2_MOD, gp1bst bit = 0)

0.10

V

(gp1bst bit = 1)

0.14

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

GENERAL CHARACTERISTICS

Frequency Range

280

450

MHz

Power-On Time

ENABLE low-to-high transition, frequency

settled to within 50kHz of the desired

130

F

s

ENABLE low-to-high transition, frequency

settled to within 5kHz of the desired carrier

185

Maximum Data Rate

(PApwr = 0x1E)

ASK mode

(no shaping)

Manchester encoded

50

kbps

Nonreturn to zero

100

FSK mode

Manchester encoded

70

Nonreturn to zero

140