Micrel, Inc.

MICRF213

May 2007

4

M9999-052307-A

(408) 944-0800

Symbol

Parameter

Condition

Min

Typ

Max

Units

Demodulator

CTH Source Impedance

165

k

Ω

CTH Leakage Current

±2

±800

nA

nA

SEL0=0, SEL1=0

1180

SEL0=1, SEL1=0

2360

SEL0=0, SEL1=1

4720

Demodulator Filter

Bandwidth @ 315MHz

(Programmable, see

application section)

SEL0=1, SEL1=1

9400

Hz

Digital / Control Functions

DO pin output current

As output

source @ 0.8Vdd

sink @ 0.2Vdd

260

600

µA

Output rise and fall times

CI = 15pF, pin DO, 10-90%

2

µsec

RSSI

RSSI DC Output Voltage

Range

-110dBm to -50dBm

0.4 – 1.9

V

RSSI response slope

-110dBm to -50dBm

25

mV/dB

RSSI Output Current

400

µA

RSSI Output Impedance

±15

200

Ω

RSSI Response Time

50% data duty cycle, input power to Antenna = -

20 dBm

0.3

Sec

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.

Sensitivity is defined as the average signal level measured at the input necessary to achieve 10-2 BER (bit error rate). The input signal is

defined as a return-to-zero (RZ) waveform with 50% average duty cycle (Manchester encoded) at a data rate of 1kbps.

5.

When data burst does not contain preamble, duty cycle is defined as total duty cycle, including any “quiet” time between data bursts. When

data bursts contain preamble sufficient to charge the slice level on capacitor C , then duty cycle is the effective duty cycle of the burst alone.

[For example, 100msec burst with 50% duty cycle, and 100msec “quiet” time between bursts. If burst includes preamble, duty cycle is

Ton/(Ton+Toff) = 50%; without preamble, duty cycle is Ton/(Ton+ Toff + Tquiet) = 50msec/(200msec)=25%. Ton is the (Average number of

1’s/burst) x bit time, and Toff = Tburst -Ton.)

TH