Radiometrix Ltd, TX3H Data Sheet

page 3

User interface

7 holes of 0.7 mm dia.

pin spacing 2.54 mm

12

3

45

6

7

5.5mm

45mm

17mm

15.24 mm

pin spacing:

2.54 mm

1 = RF gnd

2 = RF out

3 = RF gnd

4 = En

5 = Vcc

6 = 0V

7 = TXD

TX3H-869.50-10

Figure 3: TX3H pin-out and dimension (compared to TX3A)

TX1H pin

Name

Function

1, 3

RFgnd

RF Ground

2

RF out

50

Ω RF output to the antenna

4

EN

Pull high to enable TX. <0.15V shuts down module (current <1µA).

5

VCC

5V regulated DC power supply

6

0V

Ground

7

TXD

Ω

Note: Pin out as TX1H and standard TX3A

Condensed specifications:

Operating temperature: -40°C to +85°C

(Figures apply at +25°C, 5.0V supply unless otherwise stated)

pin

min.

typ.

max.

units

notes

Supply

Supply voltage

5

4.9

5

5.1

V

8

Supply current

5

-

310

-

mA

Standby current (EN <0.15V)

5

-

-

1

µA

8

RF

RF power output

2

+25.5

+26.5

+27

dBm

1

Spurious emissions,

≤1GHz

2

-

-

-54

dBm

2

Spurious emissions,

≥ 1GHz

2

-

-

-40

dBm

2

RF centre frequency

-

869.50

-

MHz

3

Initial Frequency accuracy

-15

0

+15

kHz

Overall Frequency accuracy

-40

0

+40

kHz

4

FM deviation (peak)

-

±27

-

kHz

5

Antenna pin impedance

2

-

50

-

Ω

Number of channels

-

1

-

Baseband

Modulation bandwidth @ -3dB

DC

-

8

kHz

6

Maximum raw data rate

-

-

16

kbps

6

TXD input level (logic low)

6

-

0

-

V

7

TXD input level (logic high)

6

-

5.0

-

V

7

Dynamic timing

TX enable to full RF

-

53

55

ms

8

Notes:

1. Measured into 50

Ω resistive load

2. Meets EN requirements at all frequencies

3. There is a <10% duty cycle restriction on 869.50 MHz in EU member states

4. Total over full supply and temperature range

5. With 0V – 5.0V modulation input

6. 5V CMOS compatible

7. To achieve specified FM deviation

8. Supply to Vcc must be constant and should not be used for power up of tx (use EN)