TH72002

315MHz

ASK Transmitter

3901072002

Page 10 of 20

Data Sheet

Rev. 007

June/07

4.5

AC Characteristics

all parameters under normal operating conditions, unless otherwise stated;

Parameter

Symbol

Condition

Min

Typ

Max

Unit

CW Spectrum Characteristics

Output power in step 0

(Isolation in off-state)

ENTX=1

-70

dBm

Output power in step 1

ENTX=1

-13

-12

-9.5

1)

dBm

Output power in step 2

ENTX=1

-2.5

-3

-0.5

1)

dBm

Output power in step 3

ENTX=1

2.5

3

5

1)

dBm

Output power in step 4

ENTX=1

5

9

11

1)

dBm

Phase noise

@ 200kHz offset

-88

-83

dBc/Hz

47MHz< f <74MHz

87.5MHz< f <118MHz

174MHz< f <230MHz

470MHz< f <862MHz

B=100kHz

-54

dBm

f < 1GHz, B=100kHz

-36

dBm

Spurious emissions according

to EN 300 220-1 (2000.09)

table 13

f > 1GHz, B=1MHz

-30

dBm

Start-up Parameters

Start-up time

from standby to

transmit mode

1.2

1.5

ms

Frequency Stability

Frequency stability vs. supply

voltage

±3

ppm

Frequency stability vs. tem-

perature

crystal at constant

temperature

±10

ppm

Frequency stability vs. varia-

±20

ppm

1) output matching network tuned for 5V supply

4.6

Output Power Steps

Power step

0

1

2

3

4

RPS / k

Ω

< 3

22

56

120

not connected