CC1021-RTR1 datasheet(6/91 Pages) TI1

6 / 91 page

Not Recommended for New Designs NRND

CC1021

SWRS045D – JANUARY 2006 – REVISED JANUARY 2015

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Table 3-1. Pin Attributes(1)(2) (continued)

PIN NO.

PIN NAME

TYPE

DESCRIPTION

R_BIAS

Analog output

Connection for external precision bias resistor (82 k

Ω, ±1%)

AVDD

Power (analog)

Power supply (3 V typical) for LNA input stage

RF_IN

RF Input

RF signal input from antenna (external AC-coupling)

AVDD

Power (analog)

Power supply (3 V typical) for LNA

RF_OUT

RF output

RF signal output to antenna

Power supply (3 V typical) for LO buffers, mixers, prescaler, and first PA

AVDD

Power (analog)

stage

AVDD

Power (analog)

Power supply (3 V typical) for VCO

Analog input

VCO control voltage input from external loop filter

AGND

Ground (analog)

Ground connection (0 V) for analog modules (guard)

AD_REF

Power (analog)

3 V reference input for ADC

AVDD

Power (analog)

Power supply (3 V typical) for charge pump and phase detector

CHP_OUT

Analog output

PLL charge pump output to external loop filter

AVDD

Power (analog)

Power supply (3 V typical) for ADC

DGND

Ground (digital)

Ground connection (0 V) for digital modules (guard)

DVDD

Power (digital)

Power supply connection (3 V typical) for digital modules

Programming chip select, active low, for configuration interface. Internal

PSEL

Digital input

pullup resistor.

Terminal Configuration and Functions

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CC1021-RTR1 Datasheet(PDF) 6 Page - Texas Instruments

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