Micrel

MICRF219

June 2011

4

M9999-060811

(408) 944-0800

le

erwise noted. Bold values

C. 1kbps data rate (Manchester encoded), refer

ator frequenc

.52127MHz.

on

Typ.

Max.

Units

Electrical Characteristics (Continued)

Specifications

= 3.3V, GN

Hz un ss oth

= 13

indicate –40

ence oscill

y

Parameter

Conditi

Min.

Reference Oscillator Input Range

0.2

1.5

Reference Oscillator Sourc

) = 0V

300

µA

e

V(REFOSC

Current

Demodulator

165

CTH Source Impedance

z

120

kΩ

CTH Leakage Current

T = +105ºC

A

±2

±800

nA

Demodulator Filter Bandwid

, see application section

0

9400

Hz

th

Programmable

@ 315MHz

117

Demodulator Filter Bandwi

@ 434MHz

e, see application section

625

13000

Hz

dth

Programmabl

1

Digital / Control Functions

DO Pin Output Current

DD

260

600

µA

As output source @ 0.8 V

Output Rise And Fall Times

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

2

µsec

Input High Voltage

Pins SCLK, DO (As input), SHDN,SEL0,

SEL1,SQ

V

Input Low Voltage

Pins SCLK, DO (As input), SHDN, SEL0,

V

SEL1,SQ

Output Voltage High

DO

V

Output Voltage Low

DO

V

RSSI

−100dBm

0.4

RSSI DC Output Voltage Range

−40dBm

2.0

V

RSSI Response Slope

−110dBm to -40dBm

25

mV/dB

RSSI Output Current

400

µA

RSSI Output Impedance

250

Ω

RSSI Response Time

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

20dBm

0.3

sec

Notes:

eeding 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.

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

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

1.

Exc