TH72036KLD-CAA-000-RE Datasheet TH72036KLD-CAA-000-SP, TH72036KLD-CAA-000-RE, TH72036KLD-CAA-000-TU | P10-P12

TH72036

868/915MHz

FSK/ASK Transmitter

3901072036 Page 10 of 15 Data Sheet

Rev. 009 Jun/12

4.5 AC Characteristics

all parameters under normal operating conditions, unless otherwise stated;

typical values at T

A

= 23 °C and V

CC

= 3 V; test circuit shown in Fig. 6, f

c

= 868.3MHz

Parameter Symbol

Condition Min Typ Max Unit

CW Spectrum Characteristics

Output power in step 0

(Isolation in off-state)

P

off

EN=1 -70 dBm

Output power in step 1 P

1

EN=1 -13 -12 -11

1)

dBm

Output power in step 2 P

2

EN=1 -4 -3 -2

1)

dBm

Output power in step 3 P

3

EN=1 1 2.5 3.5

1)

dBm

Output power in step 4 P

4

EN=1 4 7.5 9.5

1)

dBm

Phase noise L(f

m

) @ 200kHz offset -87 -82 dBc/Hz

Spurious emissions according

to EN 300 220-1 (2000.09)

table 13

P

spur

47MHz< f <74MHz

87.5MHz< f <118MHz

174MHz< f <230MHz

470MHz< f <862MHz

B=100kHz

-54 dBm

f < 1GHz, B=100kHz -36 dBm

f > 1GHz, B=1MHz -30 dBm

Clock output Characteristics

Output low voltage CMOS V

OL

depending on capaci-

tor CCK

and CKDIV

0.3*V

CC

V

Output high voltage CMOS V

OH

0.7*V

CC

V

Start-up Parameters

Start-up time t

on

from standby to

transmit mode

0.6 1 ms

Frequency Stability

Frequency stability vs. supply

voltage

df

VCC

±3

ppm

Frequency stability vs. tem-

perature

df

TA

crystal at constant

temperature

±10

ppm

Frequency stability vs. varia-

tion range of C

RO

df

CRO

±20

ppm

1) output matching network tuned for 5V supply

TH72036

868/915MHz

FSK/ASK Transmitter

3901072036 Page 11 of 15 Data Sheet

Rev. 009 Jun/12

RPS

R1

6

PSEL

RPS

R1

Vcc

6

PSEL

V

PSlow

V

PShigh

4.6 AC Characteristics

Power step

0 1 2 3 4

RPS / kΩ

Ω Ω

Ω

< 3 22 56 120 not connected

4.7 Output Power Steps – ASK Mode

typical values at T

A

= 23 °C and V

CC

= 3 V; test circuit shown in Fig. 6

Power step

1 2 3 4

RPS / kΩ

Ω Ω

Ω

2.4 2.8 3.5 not connected

R1 / kΩ

ΩΩ

Ω

36 14 7 0

V

PSlow

= voltage across RPS if ASK_DTA at 0V

V

PShigh

= voltage across RPS if ASK_DTA at Vcc

If the transmitter is operated at any supply voltage V

cc

, the values for R1 and RPS can be calculated as fol-

lows:

PShighPSEL

PSlowCC

VI

VV

R

⋅

=

1

PShighCC

PShigh

PS

VV

V

RR

−

=

1

TH72036

868/915MHz

FSK/ASK Transmitter

3901072036 Page 12 of 15 Data Sheet

Rev. 009 Jun/12

5 Test Circuit

Fig. 6: Test circuit for FSK and ASK with 50 Ω matching network

5.1 Test circuit component list to Fig. 6

Part Size Value @

868.3 MHz

Value @

915 MHz

Tolerance Description

CM1 0805 1.8 pF 2.2 pF

±5%

impedance matching capacitor

CM2 0805 5.6 pF 5.6 pF

±5%

impedance matching capacitor

CM3 0805 68 pF 68 pF

±5%

impedance matching capacitor

LM 0805 12 nH 10 nH

±5%

impedance matching inductor, note 2

LT 0805 15 nH 10 nH

±5%

output tank inductor, note 2

CX1

_FSK

0805 22 pF 22 pF

±5% XOSC FSK capacitor (∆f = ±20 kHz), note 1

CX1

_ASK

0805 27 pF 27 pF

±5%

XOSC ASK capacitor, trimmed to f

C

, note 1

CX2 0805 12 pF 12 pF

±5% XOSC capacitor (∆f = ±20 kHz), note 1

only needed for FSK

CCK 0805 15 pF / 180 pF

±5%

clock spur suppression capacitor, CKDIV 0 / 1

RPS 0805 see section 4.6

±5%

FSK or CW mode power-select resistor

R1 see section 4.7 ASK power-select resistor, not used at FSK

CB0 0805 220 nF

±20%

de-coupling capacitor

CB1 0805 330 pF

±10%

de-coupling capacitor

XTAL SMD

6x3.5

27.13438 MHz

28.59375 MHz

±30ppm calibr.

±30ppm temp.

fundamental wave crystal,

CL = 12 pF, C0, max = 7 pF, R1 = 40 Ω

Note 1: value depending on crystal parameters

Note 2: for high-power applications high-Q wire-wound inductors should be used

CB1

CM1

CM2

OUT

CM3

LM

LT

RPS

CB0

CKOUT

CKDIV

GND

FSK_DTA

ASK_DTA

VCC

EN

2

3

1

GND

21 21

GND

VCC

F

S

K

D

T

A

C

K

O

U

T

F

S

K

S

W

V

E

C

K

D

I

V

E

N

R

O

I

V

C

P

S

E

L

O

U

T

6

7

8910

R1

XTAL

CX2

CX1

CCK

5

4

3

1

2

VCC

GND

2

1

2

1

GND

2

1

TH72036KLD-CAA-000-RE

TH72036KLD-CAA-000-RE

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