MICRF405 datasheet(5/46 Pages) MICREL

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Micrel

MICRF405

April 2006

M9999-041906

(408) 955-1690

Absolute Maximum Ratings

(1)

Supply Voltage (VDD).........................................+3.7V

Voltage on any pin

(3) (GND = 0V)... -0.3V to 3.7V

Lead Temperature (soldering, 20sec.)............. 260°C

Storage Temperature (Ts) ................-55°C to +150°C

ESD Rating

(4)

All pins except pin 4...................................... 2 kV

Pin 4 (RFOUT)............................................ 200 V

Operating Ratings

(2)

Supply voltage (VIN)............................ +2.2V to +3.6V

RF Frequencies.......................... 290MHz to 980MHz

Data Rate (NRZ) ...........................................200kbps

Ambient Temperature (TA) ..............–40°C to +125°C

Package Thermal Resistance

MLF

® (Θ

JA) ............................................41.7°C/W

Electrical Characteristics

fRF = 915MHz. VDD = 3.0V; TA = 25°C, bold values indicate –40°C< TA < +125°C, unless noted.

Parameter

Condition

Min

Typ

Max

Units

Freq_band=0

290

325

MHz

Freq_band=1

430

490

MHz

RF Frequency Operating Range

Freq_band=2-3

860

980

MHz

Power Supply

2.2

3.6

Power Down Current

0.3

µA

Standby Current

ClkOut_en=0

200

µA

PLL mode current

PA2-0=000, PA off

5.6

VCO and PLL Section

Reference Frequency

MHz

1kHz loop filter bandwidth, Fphd=200kHz

7.0

3kHz loop filter bandwidth, Fphd=500kHz

1.8

PLL startup

30kHz loop filter bandwidth,

Fphd=1000kHz

140

µs

Standby-TX (PA on)

30kHz bandwidth

200

µs

Crystal Oscillator Start-Up Time

16MHz, 9pF load, XCO_Fast=1

300

µs

Charge Pump Current

VCPOUT = 1.2V, CP_CUR = 3

100

µA

Transmit Section

RLOAD = 250

Ω, Pa2-0=111

dBm

Output Power

RLOAD = 250

Ω, Pa2-0=001

-7

dBm

Over temperature range

1.5

Output Power Tolerance

Over power supply range

3.0

RLOAD = 150

Ω, PA2-0=111

RLOAD = 150

Ω, PA2-0=001

9.6

Tx Current Consumption

RLOAD = 150

Ω, PA2-0=000

5.6

ASK=7 (OOK)

Modulation depth ASK/OOK

ASK=6

Binary FSK Frequency Deviation

(5)

Bitrate = 200kbps

300

kHz

VCO modulation

200

kbps

Divider modulation

kbps

Data Rate

(5)

ASK

kbps

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