MICRF010
QwikRadio® Low-Power UHF Receiver
General Description
The MICRF010 is a single chip, ASK/OOK (ON-OFF
Keyed) RF receiver IC recommended for new designs
replacing the MICRF007. It provides the same function with
sensitivity enhancement, typically 6dB better than the
MICRF007. Just like all other members of the QwikRadio
®
family, the MICRF010 achieves low power operation, a
very high level of integration, and it is particularly easy to
use.
All post-detection data filtering is provided on the
MICRF010, so no external baseband filters are required. In
fact, the entire receiver circuit is made of very few external
components and with the 8-pin SOIC package makes it
ideal for small printed circuit board area applications.
The MICRF010 works in fixed-mode (FIX) operation, which
functions as a conventional super-heterodyne receiver.
Fixed-mode provides better selectivity and sensitivity
performance in comparison with sweep mode used in other
Micrel receivers intended for lower cost applications.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
QwikRadio™
Features
•
•
•
•
High sensitivity (–104dBm)
300MHz to 440MHz frequency range
Data-rate up to 2.0kbps (Manchester encoding)
Low power consumption
–
2.9mA fully operational (315MHz)
–
0.15µA in shutdown
–
290µA in polled mode (10:1 duty-cycle)
Shutdown input
Automatic tuning, no manual adjustment
Very low RF re-radiation at the antenna
Highly integrated with extremely low external part count
•
•
•
•
Applications
•
•
•
•
Automotive remote keyless entry (RKE)
Long range RF identification
Remote fan and light control
Garage door and gate openers
Ordering Information
Part Number
Standard
MICRF010BM
Pb-Free
MICRF010YM
Operating Mode
Fixed
Shutdown
Yes
Package
8-pin SOIC
Typical Application
17cm 22AWG MAGNET WIRE
433.92Mhz 1000 bps Manchester Encoded On-Off Keyed Receiver
QwikRadio is a registered trademark of Micrel, Inc. The QwikRadio Ics were developed under a partnership agreement with AIT of Orlando, Florida.
June 2005
M9999-063005
(408) 955-1690
Micrel
MICRF010
Pin Configuration
Standard 8-Pin SOIC (M)
Pin Description
Pin Number
1
2
3
4
Pin Name
VSS
ANT
VDD
CTH
Pin Function
Ground Return (input): ground return to the power supply. See “Applications Information” for bypass
capacitor details.
Antenna (Input): See “Applications Information” for information on input impedance. For optimal
performance the antenna impedance should be matched to the antenna pin impedance.
Power Supply (Input): Positive Supply input for the RF IC. Connect a low ESL, low ESR decoupling
capacitor from this to VSS, with lead length kept as short as possible.
[Data Slicing] Threshold Capacitor (External Component): Capacitor extracts the DC average value
from the demodulated waveform, which becomes the reference for the internal data slicing comparator.
See “Applications Information” for selection.
Digital Output (Output): CMOS level compatible data output signal.
Shutdown (Input): Shutdown-mode logic-level control input. Pull low to enable the receiver. This input
is pulled-up internally to VDD.
AGC Capacitor (External Component): Integrating capacitor for on-chip AGC (automatic gain control).
See “Applications Information” for capacitor selection.
Reference Oscillator (External Component or Input): Timing reference for on-chip tuning and
alignment.
5
6
7
8
DO
SHUT
CAGC
REFOSC
June 2005
2
M9999-063005
(408) 955-1690
Micrel
MICRF010
Absolute Maximum Ratings
(1)
Supply Voltage (V
DDRF
, V
DDBB
)................................... +7V
Input/Output Voltage (V
I/O
) ................ V
SS
–0.3 to V
DD
+0.3
Max Input Power ................................................... +20dBm
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
(2)
Supply Voltage (V
DDRF
, V
DDBB
) ...............+4.75V to +5.5V
Max Input Power ....................................................... 0dBm
RF Frequency Range ............................300MHz to 440Hz
Data Duty-Cycle.............................................. 20% to 80%
Reference Oscillator Input Range........... 0.2V
PP
to 1.5V
PP
Ambient Temperature (T
A
)........................ –40°C to +85°C
Electrical Characteristics
(4)
4.75V
≤
V
DD
≤
5.5V, V
SS
= 0V; C
AGC
= 4.7µF, C
TH
= 0.022µF; f
REFOSC
= 9.794MHz (equivalent to f
RF
= 315MHz); data rate = 600 bps
(Manchester encoded). T
A
= 25°C,
bold
values indicate –40°C
≤
T
A
≤
+85°C; current flow into device pins is positive, unless noted.
Symbol
I
OP
Parameter
Operating Current
Condition
continuous operation, f
RF
= 315MHz
Polled with 10:1 duty cycle, f
RF
= 315MHz
Continuous operation, f
RF
= 433.92MHz
Polled with 10:1 duty cycle, f
RF
= 433.92MHz
I
STBY
Standby Current
Receiver Sensitivity(4)
f
IF
f
BW
IF Center Frequency
IF 3dB Bandwidth
Spurious Reverse Isolation
AGC Attack to Decay Ratio
AGC Leakage Current
Reference Oscillator
Z
REFOSC
Reference Oscillator
Input Impedance
Reference Oscillator Source
Demodulator
Z
CTH
I
ZCTH(leak)
CTH Source Impedance
CTH Leakage Current
Demodulator Filter Bandwidth
Note 9
T
A
= +85°C
Note 5
150
±100
2000
kΩ
nA
Hz
Note 7
Note 8
290
5.0
kΩ
µA
V
SHUT
= 0.8VDD
f
RF
= 315MHz Note 4
f
RF
= 433.92MHz Note 4
Note 5
Note 5
ANT pin, R
SC
= 50Ω
(6)
t
ATTACK
÷ t
DECAY
T
A
= +85°
RF Section, IF Section
–105
–103
0.86
0.6
30
0.1
±100
nA
MHz
MHz
µVrms
dBm
Min
Typ
2.9
290
4.7
470
0.15
0.5
7.5
Max
4.5
Units
mA
µA
µA
µA
µA
June 2005
3
M9999-063005
(408) 955-1690
Micrel
MICRF010
Symbol
V
IH
V
IL
I
OUT
V
OH
V
OL
t
R
, t
F
Notes:
Parameter
Input High Voltage
Input Low Voltage
Output Current
Output High Voltage
Output Low Voltage
Output Rise and Fall Time
Condition
SHUT
SHUT
DO pin, push-pull
DO pin, I
OUT
= –30µA
DO pin, I
OUT
= +30µA
DO pin, C
LOAD
= 15pF
Min
0.8
Typ
Max
Units
V
DD
Digital/Control Section
0.2
45
0.9
0.1
4
V
DD
µA
V
DD
V
DD
µs
1. Exceeding absolute maximum ratings may damage the device.
2. The device is not guaranteed to function outside its operating ratings.
3. Devices are ESD sensitive, use appropriate ESD precautions. The device meets Class 1 ESD test requirements, (human body model HBM), in
accordance with MIL-STD-883C, method 3015. Do not operate or store near strong electrostatic fields.
4. Sensitivity is defined as the average signal level measured at the input necessary to achieve 10
-2
BER (bit error rate). The RF input is assumed to
be matched to 50Ω.
5. Parameter scales linearly with reference oscillator frequency f
T
. For any reference oscillator frequency other than 9.794MHz, compute new
parameter value as the ratio:
f
REFOSC
MHZ
×
(
parameter value at 9.79MHz
)
9.794MHz
6. Spurious reverse isolation represents the spurious components, which appear on the RF input pin (ANT) measured into 50Ω with an input RF
matching network.
7. Series resistance of the resonator (ceramic resonator or crystal) should be minimized to the extent possible. In cases where the resonator series
resistance is too great, the oscillator may oscillate at a diminished peak-to-peak level, or may fail to oscillate entirely. Micrel recommends that
series resistances for ceramic resonators and crystals not exceed 50Ω and 100Ω, respectively.
8. Crystal load capacitor is 10pF. See Figure 5 in “REFOSC” section for reference oscillator operation.
9. Parameter scales inversely with reference oscillator frequency f
T
. For any reference oscillator frequency other than 9.794MHz, compute new
parameter value as the ratio:
9.794MHz
×
(
parameter value at 9.794MHz
)
f
REFOSC
MHZ
June 2005
4
M9999-063005
(408) 955-1690
Micrel
MICRF010
Typical Characteristics
Supply Current
vs. Frequency
6.0
T
A
= 25 C
V
DD
= 5V
CURRENT (mA)
4.5
o
4.0
Supply Current
vs. Temperature
f = 315 MHZ
V
DD
= 5V
CURRENT (mA)
3.5
3.0
3.0
Fix Mode,
Continuous Operation
1.5
250
300
350
400
450
500
2.5
Fix Mode
Continuous Operation
2.0
-40 -20
0
20 40
60
o
80 100
FREQUENCY (MHz)
TEMPERATURE ( C)
June 2005
5
M9999-063005
(408) 955-1690
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