micrf220 Micrel Semiconductor, micrf220 Datasheet - Page 4

• Manufacturer Part Number: micrf220
• Description: 300mhz To 450mhz, 3.3v Ask/ook Receiver With Rssi And Squelch
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
Electrical Characteristics (Continued)
Notes:
1.
2.
3.
4.
5.
6.
August 2010
Parameter
Demodulator
CTH Source Impedance,
Note 6
CTH Leakage Current In
CTH Hold Mode
Digital / Control Functions
DO Pin Output Current
Output Rise Time
Output Fall Time
Input High Voltage
Input Low Voltage
Output Voltage High
Output Voltage Low
RSSI
RSSI DC Output Voltage
Range
RSSI Output Current
RSSI Output Impedance
RSSI Response Time
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside of its operating rating.
Device is ESD sensitive. Use appropriate ESD precautions. Exceeding the absolute maximum rating may damage the device.
Encoded bit rate is 1/(shortest pulse duration) that appears at MICRF220 DO pin.
In an ON/OFF keyed (OOK) signal, the signal level goes between a “mark” level (when the RF signal is ON) and a “space” level (when the RF
signal is OFF). Sensitivity is defined as the input signal level when “ON” necessary to achieve a specified BER (bit error rate). BER measured with
the built-in BERT function in Agilent E4432B using the PN9 sequence. Sensitivity measurement values are obtained using an input matching
network corresponding to 315MHz or 433.92MHz.
CTH source impedance is inversely proportional to the reference frequency. In production testing, the typical source impedance value is verified
with 12MHz reference frequency.
Condition
f
f
T
T
As output source @ 0.8 V
As output sink @ 0.2 V
15pF load on DO pin, transition time
between 0.1xV
SHDN, SEL0, SEL1, SQ
SHDN, SEL0, SEL1, SQ
DO
DO
−110dBm RF input level
−50dBm RF input level
5kΩ load to GND, −50dBm RF input level
V
from no input to −50dBm
REF
REF
A
A
SEL0
= +25ºC
= +105ºC
= 9.81713MHz
= 13.52313MHz
= V
SEL1
= 0V, RF input power stepped
DD
and 0.9xV
DD
DD
DD
4
0.8V
0.8V
Min.
DD
DD
Typ.
165
120
300
680
600
200
400
250
0.5
2.0
10
10
1
0.2V
0.2V
Max.
DD
DD
M9999-082610-A
MICRF220
Units
ms
kΩ
nA
µA
µA
ns
Ω
V
V
V
V
V