Rainbow Electronics RAM01 User Manual

RAM01

RAM01 ISM Band OOK Receiver Module

Version: 1.0 Date: 10/11/2008

DESCRIPTION

HopeRF’s RAM01 is a highly-integrated, low power, multi-channel OOK receiver module designed for use in
applications requiring FCC or ETSI conformance for unlicensed use in the 433, 868 and 915 MHz bands. Used in
conjunction with HopeRF’s transmitters, the RAM01 is a flexible, low cost, and highly integrated solution that does
not require production alignments. All required RF functions are integrated.

The RAM01 has a completely integrated PLL for easy RF design, and its rapid settling time allows for fast frequency
hopping, bypassing multipath fading, and interference to achieve robust wireless links. The PLL’s high resolution
allows the usage of multiple channels in any of the bands. The baseband bandwidth (BW) is programmable to
accommodate various deviations, data rate. The module employs the low-IF approach; therefore, no external
components are needed in a typical application. The RAM01 is a complete analog RF and baseband receiver,
including a multi-band PLL synthesizer with an LNA, down converter mixers, baseband filters and amplifiers, and
demodulator.

The module support Stand alone mode, that means it can receive data without MCU configuration. This mode
mainly simplify the customer application complexity and can be replace traditional super- regenerative receiver and
super-heterodyne receiver.
but frequency can be selected.

for more details about RAM01, please see RA01’s datasheet from http://www.hoperf.com

FEATURES

• Fully integrated receiver module

• No alignment required in production

• Fast settling, programmable, high-resolution PLL

• Fast frequency hopping capability

• Programmable bit rate (up to 40 kbps)

• 50 ohm single-ended antenna input

• Programmable baseband bandwidth (85 to 340 kHz)

• Data filtering and clock recovery

• RX pattern recognition

• SPI compatible serial control interface

• Readable registers

• Clock and reset signals for microcontroller

• 64 bit RX data FIFO

• Accurate Wake-up timer

• Low battery detector

• 2.2 to 3.8 V supply voltage

• Low power consumption

• Low standby current (typ. 0.2 μA)

TYPICAL APPLICATIONS

• Remote control

• Home security and alarm

• Wireless keyboard/mouse and other PC peripherals

• Toy control

• Remote keyless entry

• Tire pressure monitoring

• Telemetry

• Personal/patient data logging

• Remote automatic meter reading

Tel: [phone] Fax: [phone] E-mail: [e-mail] http://www.hoperf.com

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RAM01

Over view and Pin out

Version: 1.0 Date: 10/11/2008

RAM01-D

Pin number Name Type Function

1 VDD P Power supply
2 DATA DO Demodulated data output

3, 5 GND P Ground

4 ENABLE DI Receiving control(active high)
6 ANT AI 50 ohm antenna input

RAM01-S1 RAM01-S2

Pin number Name Type Function

1 OP0 DI
2 OP1 DI
3 DATA DO
4 DFILC AO Data filter capacitor connection
5 CLK DO Divide clock output
6 DUTY DI Duty-cycle mode receiving enable.

7, 10, 11 GND P

8 ANT AI

9 VDD P
12 FR0 DI
13 FR1 DI
14 FR2 DI

Operation frequency band selection pins

Demodulated data output

Ground
50 ohm antenna input
Power supply

Operation frequency selection pins

Tel: [phone] Fax: [phone] E-mail: [e-mail] http://www.hoperf.com

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RAM01

GENERAL DEVICE SPECIFICATIONS

All voltages are referenced to Vss, the potential on the ground reference pin VSS.

Absolute Maximum Ratings (non-operating)

Symbol Parameter Min Max Units
Vdd Positive supply voltage -0.5 6.0 V
Vin Voltage on any pad -0.5 Vdd+0.5 V
Iin Input current into any pad except VDD and VSS 25 25 mA
ESD Electrostatic discharge with human body model

Tst Storage temperature 55 125
Tld Lead temperature (soldering, max 10 s)

Recommended Operating Range

Symbol Parameter Min Max Units
Vdd Positive supply voltage 2.2 3.8 V
Top Ambient operating temperature 40 +85

ELECTRICAL SPECIFICATION

(Min/max values are valid over the whole recommended operating range, typical conditions: Top = 27 oC; Vdd = Voc =

2.7 V)

DC Characteristics

Symbol Parameter Conditions/Notes Min Typ Max Units
Idd Supply current all bands

Ipd Standby current all blocks disabled
Ilb Low battery voltage detector and

Ix Idle current crystal oscillator is ON
Vlb Low battery detection threshold programmable in 0.1 V steps 2.0 3.5 V

Vlba Low battery detection accuracy ± 2.5 %
VPOR Vdd threshold required

VPOR,hys POR hysteresis larger glithches on the Vdd

SRVdd Vdd slew rate for proper POR generation 0.1 V/ms
Vil Digital input low level 0.3*Vdd V
Vih Digital input high level 0.7*Vdd V
Iil Digital input current Vil = 0 V -1 1 μA
Iih Digital input current Vih = Vdd, Vdd = 3.8 V -1 1 μA
Vol Digital output low level Iol = 2 mA 0.4 V
Voh Digital output high level Ioh = -2 mA Vdd-0.4 V

AC Characteristics

Symbol Parameter Conditions/Notes Min Typ Max Units
fLO Receiver frequency 433 MHz band, 10 kHz resolution

BW Baseband fitler bandwidth mode 1

BRNRZ OOK bit rate with internal digital filters, NRZ data 4.8 40 kbps
BRM OOK bit rate with internal digital filters,

Pmin Receiver sensitivity BER 3* 10-3, BW = 85 kHz, PN9, -110 dBm

wake-up timer current

to generate a POR

1.5 V

generate a POR even above
the threshold V

868 MHz band, 20 kHz resolution
915 MHz band, 20 kHz resolution

mode 2
mode 3
mode 4
mode 5

manchester coded data

POR

Version: 1.0 Date: 10/11/2008

0.6 V

400.96

801.92

881.92
75

125
180
235
305

2.4 20 kbps

1000 V

260

9.6 12 mA

0.2
4

0.5

85
140
200
260
340

439.03

878.06

930.00
95

155
220
295
375

o

C

o

C

o

C

μA
μA

mA

MHz

kHz

Tel: [phone] Fax: [phone] E-mail: [e-mail] http://www.hoperf.com

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