TH71071 データシートの表示（PDF） - Melexis Microelectronic Systems

部品番号

コンポーネント説明

メーカー

TH71071

315/433MHz ASK Transmitter / LO Source

Melexis Microelectronic Systems  

TH71071

315/433MHz

ASK Transmitter / LO Source

AC Characteristics

all parameters under normal operating conditions, unless otherwise stated;

typical values at Ta = 23 °C and Vcc = 3 V;

ENTX = 1, VPS = 1.1V, fc = 433.6 MHz, test circuit shown in Fig. 2

Parameter

Symbol

Condition

Min

Output power

FM deviation

Modulation frequency FM

Data rate ASK

Reference spurs

Harmonic content

Spurious output signal

Phase noise

VCO gain

Charge pump current

Start-up time

Po

∆fFM

fmod

RASK

Pref

Pharm

Poff

PN

KVCO

ICP

ton

adjustable with

varactor and VFM

NRZ

@ fc ± fref

@ 2fc , 3fc , 4fc

VPS ≤ 0.1V

@ fc ± 500kHz

from ”all OFF” to any

other mode

Typ

-1

±6

5

40

-44

-40

-60

-87

200

±260

Max

Unit

dBm

kHz

kHz

kbit/s

dBm

dBm

dBm

dBc/Hz

MHz/V

µA

0.9

ms

Output Power Selection

typical values at Ta = 23 °C and Vcc = 3 V:

ENTX = 1, fc = 433.6 MHz, test circuit shown in Fig. 2

R1 / kΩ

0

7.5

11

R2 / kΩ

4.7

4.7

VPS / V

≥2

1.1

0.9

Icc / mA

Po / dBm

Pharm / dBm

11.5

2

≤-40

8.6

-1

≤-40

7.3

-4

≤-40

15

4.7

0.7

6.2

-7

≤-45

24

4.7

0.5

5.3

-10

≤-45

If the transmitter is operated at any supply voltage Vcc,

the values for R1 and R2 can be calculated as allows:

R1

= R2

•



Vcc

VPS

− 1

Crystal Parameter

Parameter

Crystal frequency

Load capacitance

Static capacitance

Resonance resistance

Spurious response

Symbol

fcrystal

Cload

C0

Rm

aspur

Condition

fundamental mode, AT

Min

9.69

10

Max

14

15

7

60

-10

43

4.7

0.3

4.8

-12

≤-50

Unit

MHz

pF

pF

Ω

dB

3901071071

Rev. 004

Page 6 of 10

Data Sheet

Dec. 2001

Share Link: