MICRF220 Ver la hoja de datos (PDF) - Micrel

Número de pieza

componentes Descripción

Fabricante

MICRF220

300MHz to 450MHz, 3.3V ASK/OOK Receiver with RSSI and Squelch

Micrel 

Micrel, Inc.

MICRF220

Electrical Characteristics (Continued)

Parameter

Condition

Min.

Typ.

Max.

Demodulator

CTH Source Impedance,

fREF = 9.81713MHz

165

Note 6

fREF = 13.52313MHz

120

CTH Leakage Current In

TA = +25ºC

1

CTH Hold Mode

TA = +105ºC

10

Digital / Control Functions

DO Pin Output Current

As output source @ 0.8 VDD

As output sink @ 0.2 VDD

300

680

Output Rise Time

15pF load on DO pin, transition time

600

Output Fall Time

between 0.1xVDD and 0.9xVDD

200

Input High Voltage

Input Low Voltage

Output Voltage High

Output Voltage Low

RSSI

SHDN, SEL0, SEL1, SQ

SHDN, SEL0, SEL1, SQ

DO

DO

0.8VDD

0.8VDD

0.2VDD

0.2VDD

RSSI DC Output Voltage

−110dBm RF input level

0.5

Range

−50dBm RF input level

2.0

RSSI Output Current

5kΩ load to GND, −50dBm RF input level

400

RSSI Output Impedance

250

RSSI Response Time

VSEL0 = VSEL1 = 0V, RF input power stepped

from no input to −50dBm

10

Notes:

1. Exceeding the absolute maximum rating may damage the device.

2. The device is not guaranteed to function outside of its operating rating.

3. Device is ESD sensitive. Use appropriate ESD precautions. Exceeding the absolute maximum rating may damage the device.

4. Encoded bit rate is 1/(shortest pulse duration) that appears at MICRF220 DO pin.

Units

kΩ

nA

µA

ns

V

V

V

V

V

µA

Ω

ms

5. In an ON/OFF keyed (OOK) signal, the signal level goes between a “mark” level (when the RF signal is ON) and a “space” level (when the RF

signal is OFF). Sensitivity is defined as the input signal level when “ON” necessary to achieve a specified BER (bit error rate). BER measured with

the built-in BERT function in Agilent E4432B using the PN9 sequence. Sensitivity measurement values are obtained using an input matching

network corresponding to 315MHz or 433.92MHz.

6. CTH source impedance is inversely proportional to the reference frequency. In production testing, the typical source impedance value is verified

with 12MHz reference frequency.

August 2010

4

M9999-082610-A

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