MICRF001BN Micrel Inc, MICRF001BN Datasheet - Page 5
![IC RCVR/DATA DEMOD RF/IF 14DIP](/photos/6/87/68706/576-14-dip_sml.jpg)
MICRF001BN
Manufacturer Part Number
MICRF001BN
Description
IC RCVR/DATA DEMOD RF/IF 14DIP
Manufacturer
Micrel Inc
Datasheet
1.MICRF001YN.pdf
(8 pages)
Specifications of MICRF001BN
Frequency
300MHz ~ 440MHz
Sensitivity
-95dBm
Data Rate - Maximum
4.8 kbps
Modulation Or Protocol
OOK
Applications
Garage Door, RKE
Current - Receiving
6.3mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Features
Automatic Tuning
Voltage - Supply
4.75 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
14-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
June 1998
MICRF001
Block Diagram
Functional Description
The block diagram illustrates the basic structure of the
MICRF001.
functional blocks of the IC, namely (1) UHF Downconverter,
(2) OOK Demodulator, and (3) Reference and Control. Also
shown in the figure are two capacitors (CTH, CAGC) and
one timing component (CR), usually a ceramic resonator.
With the exception of a supply decoupling capacitor, these
are all the external components needed with the MICRF001
to construct a complete UHF receiver. Three control inputs
are shown in the block diagram, SEL0, SEL1 and SWEN.
Through these logic inputs the user can control the operating
mode and programmable functions of the IC. These inputs
are CMOS compatible, and are pulled-up on the IC. The
inputs SEL0, SEL1 control the Demodulator filter bandwidth
in four binary steps from approximately 0.6kHz to 4.8kHz,
and the user must select the bandwidth appropriate to his
needs.
The SWEN pin allows the device to be configured in either its
normal (SWP) operating mode, or in standard (FIXED)
superheterodyne receiver mode. SWP operation is selected
when SWEN is HIGH, and is the default mode for the IC. An
example of SWP operation would be where the MICRF001
Identified in the figure are the three principal
QwikRadio
5
must operate with LC-based transmitters, whose transmit
frequency may vary up to
and temperature.
frequency is varied in a prescribed fashion which results in
downconversion of all signals in a band 2-3% around the
transmit frequency. So the Transmitter may drift up to
0.5% without the need to retune the Receiver, and without
impacting system performance.
achieved
superheterodyne receivers, which can operate only with
SAW or crystal based transmitters.
[Note: A range penalty will occur in installations where there
exists a competing signal of sufficient strength in this small
frequency band of 2-3%. This penalty also exists with super-
regenerative type receivers, as their RF bandwidth is also
generally 2-3%. So any application for a super-regenerative
receiver is also an application for the MICRF001.]
tm
with
In this (patent-pending) mode, the LO
currently
0.5% over initial tolerance, aging,
available
Such performance is not
crystal-based
MICRF001
Micrel