MICRF011BM TR Micrel Inc, MICRF011BM TR Datasheet

MICRF011BM TR

Manufacturer Part Number

MICRF011BM TR

Description

Manufacturer

Micrel Inc

Datasheet

1.MICRF011BM_TR.pdf (11 pages)

Specifications of MICRF011BM TR

Operating Band Frequency

300 to 440MHz

Operating Temperature (min)

-40C

Operating Temperature (max)

85C

Operating Temperature Classification

Industrial

Operating Supply Voltage (min)

4.75V

Operating Supply Voltage (typ)

Operating Supply Voltage (max)

5.5V

Lead Free Status / Rohs Status

Not Compliant

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Typical Operating Circuit

385.5 MHz, 1200 bps OOK RECEIVER

General Description

The MICRF011, an enhanced version of the MICRF001, is a single chip

OOK (ON-OFF Keyed) Receiver IC for remote wireless applications,

employing Micrel’s latest QwikRadio

“antenna-in, data-out” monolithic device.

accomplished automatically within the IC, which eliminates manual

tuning and reduces production costs. Receiver functions are completely

integrated. The result is a highly reliable yet extremely low cost solution

for high volume wireless applications. Because the MICRF011 is a true

single-chip radio receiver, it is extremely easy to apply, minimizing design

and production costs, and improving time to market.

The MICRF011 is a functional and pin equivalent upgrade to the

MICRF001, providing improved range, lower power consumption, and

higher data rate support when in FIXED mode.

The MICRF011 provides two fundamental modes of operation, FIXED

and SWP. In FIXED mode, the device functions like a conventional

superheterodyne receiver, with an (internal) local oscillator fixed at a

single frequency based on an external reference crystal or clock. As with

any conventional superheterodyne receiver, the transmit frequency must

be accurately controlled, generally with a crystal or SAW (Surface

Acoustic Wave) resonator.

In SWP mode, the MICRF011 sweeps the (internal) local oscillator at

rates greater than the baseband data rate. This effectively “broadens”

the RF bandwidth of the receiver to a value equivalent to conventional

super-regenerative receivers. Thus the MICRF011 can operate with less

expensive LC transmitters without additional components or tuning, even

though the receiver topology is still superheterodyne. In this mode the

reference crystal can be replaced with a less expensive

resonator.

All post-detection (demodulator) data filtering is provided on the

MICRF011, so no external filters need to be designed. Any one of four

filter bandwidths may be selected externally by the user. Bandwidths

range in binary steps, from 0.625kHz to 5kHz (SWP mode) or 1.25kHz to

10kHz (FIXED mode). The user only needs to program the appropriate

filter selection based on data rate and code modulation format.

Micrel Inc. 1849 Fortune Drive San Jose, Ca 95131 USA

technology. This device is a true

All RF and IF tuning is

0.5% ceramic

tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com

Features

Applications

IMPORTANT: Items in bold type represent changes from

the MICRF001 specification.

MICRF001 and -011 are identified in table 2, together with

design considerations for using the -011 in present

MICRF001 designs.

QwikRadio

Complete UHF receiver on a monolithic chip

Frequency range 300 to 440 MHz

Typical range over 200 meters with monopole

antenna

Data rates to 2.5kbps (SWP), 10kbps (FIXED)

Automatic tuning, no manual adjustment

No Filters or Inductors required

Low Operating Supply Current—2.4 mA at 315MHz

Fully pin compatible with MICRF001

Very low RF re-radiation at the antenna

Direct CMOS logic interface to standard decoder

and microprocessor ICs

Extremely low external part count

Garage Door/Gate Openers

Security Systems

Remote Fan/Light Control

Preliminary Information

MICRF011

Receiver/Data Demodulator

Differences between the

Related parts for MICRF011BM TR

MICRF011BM TR Summary of contents

Page 1

... The user only needs to program the appropriate filter selection based on data rate and code modulation format. Typical Operating Circuit 385.5 MHz, 1200 bps OOK RECEIVER Micrel Inc. 1849 Fortune Drive San Jose, Ca 95131 USA QwikRadio Features Complete UHF receiver on a monolithic chip ...

Page 2

MICRF011 Ordering Information Part Number MICRF011BN MICRF011BM Pin Configuration (DIP and SOIC) Pin Description Pin Number Pin Name Pin Function 1 SEL0 Programs desired Demodulator Filter Bandwidth. This pin in internally pulled-up to VDD. See Table 1. 2/3 VSSRF This ...

Page 3

MICRF011 SEL0 SEL1 Design Change . 1. Local Oscillator sweep range reduced 2X. Affects SWP mode only. 2. Local Oscillator sweep rate reduced 2X. Affects SWP mode only Center ...

Page 4

MICRF011 ABSOLUTE MAXIMUM RATINGS Supply Voltage (VDDRF, VDDBB).................................+7V Voltage on any I/O Pin.........................VSS-0.3 to VDD+0.3 Junction Temperature..............................................+150 C Storage Temperature Range.....................- 150 C Lead Temperature (soldering, 10 seconds).............+ 260 C Electrical Characteristics Unless otherwise stated, these specifications ...

Page 5

MICRF011 Note 4: Parameter scales linearly with REFOSC frequency ft. For any REFOSC frequency other than 4.90MHz, compute new parameter value as the ratio [(REFOSC FREQ (in MHz) / 4.90] * [Parameter Value @ 4.90MHz]. Example: For REFOSC Freq. ft ...

Page 6

MICRF011 MICRF011 Block Diagram December 1998b tm QwikRadio 66 Micrel MICRF011 ...

Page 7

MICRF011 Functional Description Please refer to “MICRF011 Block Diagram”. Identified in the figure are the three principal functional blocks of the IC, namely (1) UHF Downconverter, (2) OOK Demodulator, and (3) Reference and Control. Also shown in the figure are ...

Page 8

MICRF011 [By adding resistance from the CAGC pin to VDDBB or VSSBB in parallel with the CAGC capacitor, the ratio of decay-to-attack time-constant may be varied, although the value of such adjustments must be studied on a per- application basis. ...

Page 9

MICRF011 3. Selecting CAGC Capacitor Selection of CAGC is dictated by minimizing the ripple on the AGC control voltage, by using a sufficiently large capacitor Micrel’s experience that CAGC should be in the vicinity of 0. ...

Page 10

MICRF011 Figure 2 CTH Pin Figure 4 DO Pin December 1998b tm QwikRadio Figure 5 REFOSC Pin 1010 Micrel Figure 3 CAGC Pin Figure 6 SEL0, SEL1, SWEN MICRF011 ...

Page 11

... This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. This is preliminary information and a final specification has not been completed. Before making any final design determination, consult with Micrel for final specifications. ...

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