TH7121 Ver la hoja de datos (PDF) - Melexis Microelectronic Systems

Número de pieza

componentes Descripción

Lista de partido

TH7121

300 to 930MHz FSK/FM/ASK Transceiver

Melexis Microelectronic Systems  

TH7121

300 to 930MHz

FSK/FM/ASK Transceiver

Register Settings

A-word

Symbol

Bits No.

Description

Software button

RR9:RR0

RR9:RR0

[9:0] 10

Reference divider ratio in RX mode

TE:RE

[11:10] 2

Select active mode at programmable-channel application:

‘00’

Standby mode

OPMODE

‘11’

Idle mode

‘10’

Transmit mode

PRELIMINARY LNAG

LNAGAIN

MIXG

MIXGAIN

Pow1:Pow0

TXPOWER

PA_AUTO

[12]

1

[13]

1

[15:14] 2

[16]

1

‘01’

Receive mode

Select LNA gain at internal gain control:

‘0’

low LNA gain

‘1’

high LNA gain

Select mixer conversion gain at programmable-channel application:

‘0’

low gain

‘1’

high gain

Select output power at programmable-channel application:

‘00’

Pmax - 20 dBm

‘01’

Pmax - 12 dBm

‘10’

Pmax - 6 dBm

‘11’

Pmax

Disable automatic PA turn-on after PLL lock:

‘0’

enabled

PA_AUTO

‘1’

disabled

LOCK_MODE [17]

1

Select PFD output analyse mode of lock detecting:

LOCK_MODE

‘0’

before lock only

‘1’

before and after lock.

HighCur

[18]

1

Select Charge Pump output current:

CPCUR

‘0’

± 260 µA

‘1’

±1300 µA

MODUL

[19]

1

Select modulation mode at internal modulation control:

ASK/FSK

‘0’

ASK

‘1’

FSK

DI_MODE

[20]

1

Select mode for input data:

‘0’

normal

DI_MODE

‘0’ for space at ASK or fmin at FSK, ‘1’ for mark at ASK or fmax at FSK

‘1’

inverse

not used

‘1’ for space at ASK or fmin at FSK, ‘0’ for mark at ASK or fmax at FSK

[21]

1 ‘X’

3901007121

Rev. 001

Page 12 of 28

Data Sheet

Jan. 2002

Share Link: