CC1021-RTR1 datasheet(77/92 Pages) TI

No. de pieza	CC1021-RTR1

Descripción Electrónicos	Single Chip Low Power RF Transceiver for Narrowband Systems

PDF	92 Pages

Scroll/Zoom	100%

Fabricante Electrónico	TI [Texas Instruments]

Página de inicio	http://www.ti.com

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77 / 92 page

CC1021

SWRS045

Page 77 of 91

FRONTEND Register (16h)

NAME

Default

value

Active

Description

FRONTEND[7:6]

LNAMIX_CURRENT[1:0]

Controls current in LNA, LNA2 and mixer

Recommended setting: LNAMIX_CURRENT=1

FRONTEND[5:4]

LNA_CURRENT[1:0]

Controls current in the LNA

Recommended setting: LNA_CURRENT=3.

Can be lowered to save power, at the expense of

reduced sensitivity.

FRONTEND[3]

MIX_CURRENT

Controls current in the mixer

Recommended setting:

MIX_CURRENT=1 at 402-470 MHz,

MIX_CURRENT=0 at 804-940 MHz..

FRONTEND[2]

LNA2_CURRENT

Controls current in LNA 2

Recommended settings:

LNA2_CURRENT=0 at 402-470 MHz,

LNA2_CURRENT=1 at 804-940 MHz.

FRONTEND[1]

SDC_CURRENT

Controls current in the single-to-diff. converter

Recommended settings:

SDC_CURRENT=0 at 402-470 MHz,

SDC_CURRENT=1 at 804-940 MHz.

FRONTEND[0]

LNAMIX_BIAS

Controls how front-end bias currents are generated

0: Constant current biasing

1: Constant Gm·R biasing (reduces gain variation)

Recommended setting: LNAMIX_BIAS=0.

CC1021-RTR1 Datasheet(PDF) 77 Page - Texas Instruments

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