MAX41464 datasheet(4/39 Pages) MAXIM

4 / 39 page

Electrical Characteristics (continued)

(Typical Application Circuit, all RF inputs and outputs are referenced to 50Ω, VDD = +1.8V to +3.6V, TA = -40°C to +105°C, POUT =

+13dBm for 300MHz–450MHz or +11dBm for 863MHz–928MHz, PA_BOOST = 0, unless otherwise noted. Typical values are at VDD

= +3V, TA = +25°C, unless otherwise noted. (Note 1))

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

POWER AMPLIFIER

Output Power

POUT

fRF = 300MHz–450MHz (Note 4)

dBm

fRF = 300MHz–450MHz (Note 4, Note 5)

fRF = 863MHz–928MHz (Note 4)

fRF = 863MHz–928MHz (Note 4, Note 5),

PA_BOOST = 1

Maximum Carrier

Harmonics

PA_BOOST = 0. Supply current, output

power, and harmonics are dependent on

board layout and PAOUT match.

-24

dBc

PLL

Frequency Range

Low Current mode (default)

286

960

MHz

Low Phase Noise mode, LODIV = DIV12

286.7

320

Low Phase Noise mode, LODIV = DIV8

425

480

Low Phase Noise mode, LODIV = DIV4

860

960

PLL Phase Noise

fRF = 315MHz, Low

Current mode

(default)

fOFFSET = 200kHz

-82

dBc/Hz

fOFFSET = 1MHz

-90

fRF = 434MHz,

Low Current mode

(default)

fOFFSET = 200kHz

-80

fOFFSET = 1MHz

-90

fRF = 915MHz, Low

Phase Noise mode

fOFFSET = 200KHz

-82

fOFFSET = 1MHz

-104

LO Divider Settings

Minimum Synthesizer

Frequency Step

fXTAL/

216

Reference Spur

fRF = 315MHz

fRF ± fXTAL

-67

dBc

fRF = 434MHz

fRF ± fXTAL

-60

fRF = 868MHz

fRF ± fXTAL

-57

fRF = 915MHz

fRF ± fXTAL

-56

Reference Frequency

Input Level

500

mVP-P

Frequency Switching

Time

26MHz frequency step, 902MHz to

928MHz band, time from end of register

write to frequency settled to within 5kHz

of desired carrier

μs

Loop Bandwidth

LBW

300

kHz

MAX41461/MAX41462

300MHz–960MHz ASK Transmitter with I2C

Interface

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