CC2420Z-RTR1 datasheet(12/92 Pages) TI

12 / 92 page

CC2420

SWRS041B

Page 12 of 89

Parameter

Min.

Typ.

Max.

Unit

Condition / Note

Crystal load capacitance

16 pF recommended

Crystal ESR

Ω

Crystal oscillator start-up time

1.0

16 pF load

Phase noise

−109

−117

dBc/Hz

Unmodulated carrier

At ±1 MHz offset from carrier

At ±2 MHz offset from carrier

At ±3 MHz offset from carrier

At ±5 MHz offset from carrier

PLL loop bandwidth

100

kHz

PLL lock time

192

µs

The startup time from the crystal

oscillator is running and RX / TX

turnaround time

6.7

Digital Inputs/Outputs

Parameter

Min.

Typ.

Max.

Unit

Condition / Note

General

Signal levels are referred to the

voltage level at pin DVDD3.3

Logic "0" input voltage

0.3*

DVDD

Logic "1" input voltage

0.7*

DVDD

Logic "0" output voltage

0.4

Output current −8 mA,

3.3 V supply voltage

Logic "1" output voltage

2.5

VDD

Output current 8 mA,

3.3 V supply voltage

Logic "0" input current

−1

µA

Input signal equals GND

Logic "1" input current

µA

Input signal equals VDD

FIFO

setup time

TX unbuffered mode, minimum

time FIFO must be ready before

the positive edge of FIFOP

FIFO

hold time

TX unbuffered mode, minimum

time FIFO must be held after the

positive edge of FIFOP

Serial interface pins (SCLK, SI, SO

and CSn) timing specification

See Table 4 on page 28

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