MICRF022 datasheet(4/16 Pages) MICREL

4 / 16 page

MICRF002/RF022

Micrel

MICRF002/RF022

March 2003

Electrical Characteristics

DDRF = VDDBB = VDD where +4.75V ≤ VDD ≤ 5.5V, VSS = 0V; CAGC = 4.7µF, CTH = 100nF; SEL0 = SEL1 = VSS; fixed mode ( SWEN

= V

SS); fREFOSC = 4.8970MHz (equivalent to fRF = 315MHz); data-rate = 1kbps (Manchester encoded). TA = 25°C, bold values indicate

–40

°C ≤ T

A ≤ +85°C; current flow into device pins is positive; unless noted.

Symbol

Parameter

Condition

Min

Typ

Max

Units

Operating Current

continuous operation, f

RF = 315MHz

2.2

3.2

polled with 10:1 duty cycle, f

RF = 315MHz

220

µA

continuous operation, f

RF = 433.92MHz

3.5

polled with 10:1 duty cycle, f

RF = 433.92MHz

350

µA

STBY

Standby Current

SHUT = VDD

0.9

µA

RF Section, IF Section

Receiver Sensitivity (Note 4)

RF = 315MHz

–97

dBm

RF = 433.92MHz

–95

dBm

IF Center Frequency

Note 6

0.86

MHz

IF Bandwidth

Note 6

0.43

MHz

Maximum Receiver Input

SC = 50Ω

–20

dBm

Spurious Reverse Isolation

ANT pin, R

SC = 50Ω, Note 5

µVrms

AGC Attack to Decay Ratio

ATTACK ÷ tDECAY

0.1

AGC Leakage Current

A = +85°C

±100

Reference Oscillator

REFOSC

Reference Oscillator

Note 8

290

Ω

Input Impedance

Reference Oscillator Source

5.2

Current

Demodulator

CTH

CTH Source Impedance

Note 7

145

Ω

ZCTH(leak)

CTH Leakage Current

A = +85°C

±100

Demodulator Filter Bandwidth

SEL0 = VDD. VSEL1 = VDD

4000

Sweep Mode

SEL0 = VSS. VSEL1 = VDD

2000

(SWEN = V

DD or OPEN)

SEL0 = VDD. VSEL1 = VSS

1000

Note 6

SEL0 = VSS. VSEL1 = VSS

500

Demodulator Filter Bandwidth

SEL0 = VDD. VSEL1 = VDD

8000

Fixed Mode

SEL0 = VSS. VSEL1 = VDD

4000

(SWEN = V

SEL0 = VDD. VSEL1 = VSS

2000

Note 6

SEL0 = VSS. VSEL1 = VSS

1000

Absolute Maximum Ratings (Note 1)

Supply Voltage (V

DDRF, VDDBB) .................................... +7V

Input/Output Voltage (V

I/O) ................. VSS–0.3 to VDD+0.3

Junction Temperature (T

J) ...................................... +150°C

Storage Temperature Range (T

S) ............ –65°C to +150°C

Lead Temperature (soldering, 10 sec.) ................... +260

°C

ESD Rating, Note 3

Operating Ratings (Note 2)

Supply Voltage (V

DDRF, VDDBB) ................ +4.75V to +5.5V

RF Frequency Range ............................. 300MHz to 440Hz

Data Duty-Cycle ............................................... 20% to 80%

Reference Oscillator Input Range ............ 0.1V

PP to 1.5VPP

Ambient Temperature (T

A) ......................... –40°C to +85°C

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