MAX1473 datasheet(5/17 Pages) MAXIM

No. de pieza	MAX1473

Descripción Electrónicos	315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range

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Fabricante Electrónico	MAXIM [Maxim Integrated Products]

Página de inicio	https://www.maximintegrated.com/en.html

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5 / 17 page

315MHz/433MHz ASK Superheterodyne

Receiver with Extended Dynamic Range

_______________________________________________________________________________________

5

Note 1: 100% tested at TA = +25

°C. Guaranteed by design and characterization over temperature.

Note 2: IRSEL is internally set to 375MHz IR mode. It can be left open when the 375MHz image rejection setting is desired. A 1nF

capacitor is recommended in noisy environments.

Note 3: BER = 2 x 10-3, Manchester encoded, data rate = 4kbps, IF bandwidth = 280kHz.

Note 4: Input impedance is measured at the LNAIN pin. Note that the impedance includes the 15nH inductive degeneration con-

nected from the LNA source to ground. The equivalent input circuit is 50

Ω in series with 2.2pF.

Note 5: Crystal oscillator frequency for other RF carrier frequency within the 300MHz to 450MHz range is (fRF - 10.7MHz)/64 for

XTALSEL = 0V, and (fRF - 10.7MHz)/32 for XTALSEL = VDD.

AC ELECTRICAL CHARACTERISTICS (continued)

(Typical Application Circuit, VDD = 3.0V to 3.6V, all RF inputs are referenced to 50

Ω, fRF = 315MHz, TA = -40°C to +85°C, unless oth-

erwise noted. Typical values are at VDD = 3.3V and TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DATA FILTER

Maximum Bandwidth

BWDF

100

kHz

DATA SLICER

Comparator Bandwidth

BWCMP

100

kHz

Maximum Load Capacitance

CLOAD

10

pF

Output High Voltage

VDD5

V

Output Low Voltage

0V

CRYSTAL OSCILLATOR

VXTALSEL = 0V

6.6128

fRF = 433MHz

VXTALSEL = VDD

13.2256

MHz

VXTALSEL = 0V

4.7547

Crystal Frequency (Note 5)

fXTAL

fRF = 315MHz

VXTALSEL = VDD

9.5094

MHz

Crystal Tolerance

50

ppm

Input Impedance

From each pin to ground

6.2

pF

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