MICRF005YM Micrel Inc, MICRF005YM Datasheet

MICRF005YM

Manufacturer Part Number

MICRF005YM

Description

IC RECEIVER UHF 800MHZ 14SOIC

Manufacturer

Micrel Inc

Datasheets

1.MICRF501EVAL1.pdf (18 pages)

2.MICRF005YM.pdf (11 pages)

Specifications of MICRF005YM

Frequency

800MHz ~ 1GHz

Sensitivity

-84dBm

Data Rate - Maximum

115 kbps

Modulation Or Protocol

OOK

Applications

Wireless Game Controllers

Current - Receiving

10mA

Data Interface

PCB, Surface Mount

Antenna Connector

PCB, Surface Mount

Features

Automatic Tuning

Voltage - Supply

4.75 V ~ 5.3 V

Operating Temperature

-40°C ~ 85°C

Package / Case

14-SOIC (0.154", 3.90mm Width)

Receiving Current

18.5mA

Data Rate

115Kbps

Frequency Range

800MHz To 1GHz

Sensitivity Dbm

-84dBm

Rf Ic Case Style

SOIC

No. Of Pins

Supply Voltage Range

4.75V To 5.5V

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Memory Size

Lead Free Status / RoHS Status

Lead free / RoHS Compliant, Lead free / RoHS Compliant

Other names

576-1333

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General Description

The MICRF501 is a single chip tranceiver intended for ISM

(Industrial, Scientific and Medical) and SRD (Short Range

Device) frequency bands from 300MHz to 600MHz with FSK

data rates up to 128k baud.

The transmitter consists of a PLL frequency synthesizer and

a power amplifier. The frequency synthesizer consists of a

voltage-controlled oscillator (VCO), a crystal oscillator, dual-

modulus prescaler, programmable frequency dividers and a

phase-detector. The loop filter is external for flexibility and

can be a simple passive circuit. The VCO is a Colpitts

oscillator which requires an external resonator and varactor.

FSK modulation can be applied externally to the VCO or the

crystal oscillator. The synthesizer has two different N, M and

A frequency dividers. FSK modulation can also be imple-

mented by switching between these dividers (max. 2400bps).

The lengths of the N and M and A registers are 12, 10 and 6

bits respectively. For all types of FSK modulation, data is

entered at the DATAIXO pin (see application circuit). The

output power of the power amplifier can be programmed to

eight levels. A lock-detect circuit detects when the PLL is in

lock.

In receive mode the PLL synthesizer generates the local

oscillator (LO) signal. The N, M and A values that give the LO

frequency are stored in the N0, M0 and A0 registers. The

receiver is a zero intermediate frequency (IF) type in order to

make channel filtering possible with low-power integrated

low-pass filters. The receiver consists of a low noise amplifier

(LNA) that drives a quadrature mixer pair. The mixer outputs

feed two identical signal channels in phase quadrature. Each

channel includes a preamplifier, a third order Sallen-Key RC

low pass filter that protects the following gyrator filter from

strong adjacent channel signals and finally, a limiter. The

main channel filter is a gyrator capacitor implementation of a

seven-pole elliptic low pass filter. The elliptic filter minimizes

the total capacitance required for a given selectivity and

dynamic range. The cut-off frequency of the Sallen-Key RC

filter can be programmed to four different frequencies: 10kHz,

30kHz, 60kHz and 200kHz. An external resistor adjusts the

cut-off frequency of the gyrator filter. The demodulator de-

modulates the I and Q channel outputs and produces a digital

data output. It detects the relative phase of the I and the Q

channel signal. If the I channel signal lags the Q channel, the

FSK tone frequency lies above the LO frequency (data ‘1’). If

the I channel leads the Q channel, the FSK tone lies below the

LO frequency (data ‘0’). The output of the receiver is available

on the DATAIXO pin. A RSSI (Receive Signal Strength

Indicator) circuit indicates the received signal level.

March 2003

MICRF501

RadioWire is a trademark of Micrel, Inc.

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

A two pin serial interface is used to program the circuit.

External components are necessary for RF input and output

impedance matching and decoupling of power. Other exter-

nal components are the VCO resonator circuit with varactor,

crystal, feedback capacitors and components for FSK modu-

lation with the VCO, loop filter, bias resistors for the power

amplifier and gyrator filters. A T/R switch can be implemented

with 2-pin diodes. This gives maximum input sensitivity and

transmit output power.

Features

• Frequency range: 300MHz to 600MHz

• Modulation: FSK

• RF output power: 12dBm

• Sensitivity (19.2k bauds, BER=10

• Maximum data rate: 128k bauds

Applications

• Telemetry

• Remote metering

• Wireless controller

• Wireless data repeaters

• Remote control systems

• Wireless modem

• Wireless security system

Ordering Information

300MHz to 600MHz RadioWire™ RF Transceiver

Part Number

MICRF501BLQ

Ambient Temp. Range

MICRF501

–40°C to +85°C

Final

-3

): –105dBm

44-Lead LQFP

RadioWire™

Package

MICRF501

Micrel

Related parts for MICRF005YM

MICRF005YM Summary of contents

Page 1

MICRF501 General Description The MICRF501 is a single chip tranceiver intended for ISM (Industrial, Scientific and Medical) and SRD (Short Range Device) frequency bands from 300MHz to 600MHz with FSK data rates up to 128k baud. The transmitter consists of ...

Page 2

MICRF501 Pin Configuration ICHOUT QCHOUT OSCVDD OSCGND CMPOUT Pin Description Pin Number Pin Name 1 IFGND 2 IFVDD 3 ICHOUT 4 QCHOUT 5 OSCVDD 6 OSCIN 7 OSCGND 8 GND 9 CMPOUT 10 CMPR 11 MOD 12 XOSCIN 13 XOSCOUT ...

Page 3

MICRF501 Pin Description, cont’d Pin Number Pin Name 24 PA_C 25 PABIAS 26 RFOUT 27 RFGND 28 RFVDD 29 RFIN 30 RFGND2 31 LNA_C 32 MIXERGND 33 MIXERVDD 34 MIXIOUTP 35 MIXIOUTN 36 IFIINP 37 IFIIN 38 MIXQOUTP 39 MIXQOUTN ...

Page 4

MICRF501 Absolute Maximum Ratings Maximum Supply Voltage (V ) ................................... +7V DD Maximum NPN Reverse Base-emitter Voltage .......... +2.5V Storage Temperature Range (T ) ............ –55°C to +150°C S ESD Rating, Note 3 ................................................. 500mV Electrical Characteristics F = 850MHz, ...

Page 5

MICRF501 Parameter Condition Receive Section f IN Receiver Sensitivity (Note 6) BER=10 Input 1dB Compression Level Input IP3 Input Impedance RSSI Dynamic Range RSSI Output Voltage Adjacent Channel Rejection 10kHz 25kHz channel spacing C ...

Page 6

MICRF501 Functional Diagram MICRF501 LNA PA 90° Prescaler 32/33 N-counter Filters S I Gyrator Filters LD ...

Page 7

MICRF501 Typical Application Figure 3 shows an example of a transceiver with modulation applied to the VCO. The inductors and trimming capacitors must have a good high frequency performance. The varactor MA4ST-350-1141 is a single variable capaci- tance diode manufactured ...

Page 8

MICRF501 List of components Component Values R1 10Ω R2 10Ω R3 10Ω R4 10Ω R5 10Ω R6 8.2kΩ R7 3.6kΩ R8 47kΩ R9 8.2kΩ R10 8.2kΩ R11 150kΩ R12 3.3kΩ R13 270kΩ R14 1kΩ R15 3.6kΩ R16 1kΩ C1 1nF ...

Page 9

MICRF501 Applications Information VCO and PLL Section The frequency synthesizer consists of a VCO, crystal oscilla- tor, dual-modulus prescaler, programmable frequency divid- ers, phase-detector, charge pump, lock detector and an external loop filter. The dual-modulus prescaler divides the VCO-frequency by ...

Page 10

MICRF501 equal to two (Ref6 = 1) reference steps or four reference steps (Ref6 = 0). The bit setting that corresponds to lock can vary, depending on temperature, loop filter and type of varactor. Therefore, the lock detect circuit needs ...

Page 11

MICRF501 Modulation Inside PLL A fast PLL requires a loop filter with relatively high bandwidth second order loop filter is chosen, it may not give adequate attenuation of the comparison frequency. There- fore in the following example a ...

Page 12

MICRF501 signals. The receive mode loop filter comprises C115, C116, R109, R101 and C101. Modulation Outside PLL (Open Loop) In this mode the charge pump output is tri-stated. The loop is open and will therefore not track the modulation. This ...

Page 13

MICRF501 Gyrator Filter The main channel filter is a gyrator capacitor implementation of a seven-pole elliptic lowpass filter. The elliptic filter mini- mizes the total capacitance required for a given selectivity and dynamic range. An external resistor can adjust the ...

Page 14

MICRF501 Programming A two-line bus is used to program the circuit; the two lines being CLKIN and REGIN. The 2-line serial bus interface allows control over the frequency dividers and the selective powering up of Tx, Rx and Synthesizer circuit ...

Page 15

MICRF501 Name Description A1 frequency divider A1, 6 bits A0 frequency divider A0, 6 bits N1 frequency divider N1, 12 bits N0 frequency divider N0, 12 bits M1 frequency divider M1, 10 bits M0 frequency divider M0, 10 bits RxFilt ...

Page 16

MICRF501 When FSK modulation is applied to the VCO the PLL is using the dividers A1, N1 and M1. When Mod1 = 1 and Mod0 = possible to switch between the different dividers in the PLL. DATAIXO ...

Page 17

MICRF501 Example 434.245MHz lation is applied to the VCO 143 143 RxFilt Pa2 Pa1 Ref6 Ref5 Ref4 ...

Page 18

MICRF501 Package Information MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel ...

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