User guide

RAM01
Version: 1.0 Date: 10/11/2008
Tel: [phone] Fax: [phone] E-mail: [e-mail] http://www.hoperf.com
3
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 1000 V
Tst Storage temperature 55 125
o
C
Tld Lead temperature (soldering, max 10 s) 260
o
C
Recommended Operating Range
Symbol Parameter Min Max Units
Vdd Positive supply voltage 2.2 3.8 V
Top Ambient operating temperature 40 +85
o
C
ELECTRICAL SPECIFICATION
(Min/max values are valid over the whole recommended operating range, typical conditions: Top = 27
o
C; Vdd = Voc =
2.7 V)
DC Characteristics
Symbol Parameter Conditions/Notes Min Typ Max Units
Idd Supply current all bands 9.6 12 mA
Ipd Standby current all blocks disabled 0.2 μA
Ilb Low battery voltage detector and
wake-up timer current
4 μA
Ix Idle current crystal oscillator is ON 0.5 mA
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
to generate a POR
1.5 V
VPOR,hys POR hysteresis larger glithches on the Vdd
generate a POR even above
the threshold V
POR
0.6 V
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
868 MHz band, 20 kHz resolution
915 MHz band, 20 kHz resolution
400.96
801.92
881.92
439.03
878.06
930.00
MHz
BW Baseband fitler bandwidth mode 1
mode 2
mode 3
mode 4
mode 5
75
125
180
235
305
85
140
200
260
340
95
155
220
295
375
kHz
BRNRZ OOK bit rate with internal digital filters, NRZ data 4.8 40 kbps
BRM OOK bit rate with internal digital filters,
manchester coded data
2.4 20 kbps
Pmin Receiver sensitivity BER 3* 10-3, BW = 85 kHz, PN9, -110 dBm