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MICRF221 Datasheet(PDF) 4 Page - Micrel Semiconductor

Part # MICRF221
Description  3.3V, QwikRadio 850 MHz to 950 MHz Receiver
PDF  26 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MICRF221 Datasheet(HTML) 4 Page - Micrel Semiconductor

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Micrel Inc.
MICRF221
October 2008
4
M9999-100108
(408) 955-1690
Electrical Characteristics (continued)
Reference Oscillator
Symbol
Parameter
Condition
Min
Typ
Max
Units
fRX = 868 MHz
13.54856
Reference Oscillator
Frequency
fRX = 915 MHz
14.27643
MHz
Reference Oscillator
Input Impedance
RO1 Pin
1500
kΩ
Time to Data
From Shut Down
1
msec
Reference Oscillator
Input Range
With External Drive
0.5
1.5
Vp-p
Reference Oscillator
Source Current
RO1 Pin, V(REFOSC) = 0V
380
µA
Autopolling Operation
(7)
Symbol
Parameter
Condition
Min
Typ
Max
Units
Tsleep Programming
Range
10
1300
msec
Isleep
(8)
SLEEP Current
2msec on, 1.3 sec Off
15
µA
Demodulator
Symbol
Parameter
Condition
Min
Typ
Max
Units
CTH Source Impedance
Frefosc = 14.27643MHz
100
kΩ
TA = 25ºC
+/-2
CTH Leakage Current
TA = +105ºC
+/-800
nA
Demodulator Filter
Bandwidth @ 915MHz
Programmable, see application section
1712
13000
Hz
Digital / Control Functions
Symbol
Parameter
Condition
Min
Typ
Max
Units
Input High Voltage
Pins SCLK, DO (As input), SHDN
0.8Vdd
V
Input Low Voltage
Pins SCLK, DO (As input), SHDN
0.2Vdd
V
Output Voltage High
DO
0.8Vdd
V
Output Voltage Low
DO
0.2Vdd
V
As output, source @ 0.8 VDD
260
DO pin output current
As output, sink @ 0.2 VDD
600
µA
Output rise and fall times
CI = 15 pF, pin DO, 10-90%
2
µsec



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