MAX1473(2003) データシートの表示（PDF） - Maxim Integrated

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MAX1473
(Rev.:2003)

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

Maxim Integrated 

315MHz/433MHz ASK Superheterodyne

Receiver with Extended Dynamic Range

AC ELECTRICAL CHARACTERISTICS (continued)

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

DATA SLICER

BWDF

100

kHz

Comparator Bandwidth

BWCMP

100

kHz

Maximum Load Capacitance

CLOAD

10

pF

Output High Voltage

Output Low Voltage

VDD5

V

0

V

CRYSTAL OSCILLATOR

Crystal Frequency (Note 5)

fXTAL

fRF = 433MHz

fRF = 315MHz

VXTALSEL = 0V

VXTALSEL = VDD

VXTALSEL = 0V

VXTALSEL = VDD

6.6128

13.2256

4.7547

9.5094

MHz

MHz

Crystal Tolerance

50

ppm

Input Impedance

From each pin to ground

6.2

pF

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 50Ω 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.

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