TH71081EDC 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

TH71081EDC

868/915MHz ASK Transmitter / LO Source

Melexis Microelectronic Systems  

Not recommended for new designsTH71081

868/915MHz

ASK Transmitter / LO Source

4.4 DC Characteristics

all parameters under normal operating conditions, unless otherwise stated;

typical values at TA = 23 °C and VCC = 3 V

Parameter

Symbol

Condition

Min

Typ

Max

Unit

Standby current

Operating current

Input current

Pull down current

Pull up current

ISBY ENTX=0

ICC ENTX=1, VPS=1.1V

IIN

ENTX=0

IPD ENTX=1

IPS ENTX=1

0.05

0.1

µA

7

9.5

14

mA

-1

1

µA

3

8

30

µA

14

20

24

µA

4.5 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 = 868.3 MHz, test circuit shown in Fig. 2

Parameter

Symbol

Condition

Min

Output power

Reference spurs

Harmonic content

Spurious output signal

VCO gain

Charge pump current

Start-up time

Po

Pref

Pharm

Poff

KVCO

ICP

ton

@ fc ± fref

@ 2fc , 3fc , 4fc

VPS ≤ 0.1V

from “TX standby” to

“TX active” mode

Typ

-2

-44

-40

-60

300

±260

1.0

Max

Unit

dBm

dBm

dBm

dBm

MHz/V

µA

1.2

ms

4.6 Output Power Selection

typical values at TA = 23 °C and VCC = 3 V:

ENTX = 1, fc = 868.3 MHz, test circuit shown in Fig. 2

R1 / kΩ

0

7.5

11

R2 / kΩ

4.7

4.7

VPS / V

Icc / mA

Po / dBm

Pharm / dBm

≥2

12.5

1

≤-40

1.1

9.5

-2

≤-40

0.9

8.5

-5

≤-40

If the transmitter is operated at any supply voltage Vcc,

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

15

4.7

0.7

7.8

-8

≤-45

24

4.7

0.5

7.0

-10

≤-45

R1

=

R2

•

⎜⎜⎝⎛

Vcc

VPS

− 1⎟⎟⎠⎞

3901071081

Rev. 009

Page 7 of 12

43

4.7

0.3

6.2

-15

≤-50

Data Sheet

May/05

Share Link: