Rainbow Electronics RAM01 - Manual (Page 3)

RAM01
Version: 1.0 Date: 10/11/2008
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: [email protected] http://www.hoperf.com 3
GENERAL DEVICE SPECIFICATIONS
All voltages are referenced to V
ss
, the potential on the ground reference pin VSS.
Absolute Maximum Ratings (non-operating)
Symbol Parameter Min Max Units
V
dd
Positive supply voltage -0.5 6.0 V
V
in
Voltage on any pad -0.5 V
dd
+0.5 V
I
in
Input current into any pad except VDD and VSS 25 25 mA
ESD Electrostatic discharge with human body model 1000 V
T
st
Storage temperature 55 125 o C
T
ld
Lead temperature (soldering, max 10 s) 260 o C
Recommended Operating Range
Symbol Parameter Min Max Units
V
dd
Positive supply voltage 2.2 3.8 V
T
op
Ambient operating temperature 40 +85 o C
ELECTRICAL SPECIFICATION
(Min/max values are valid over the whole recommended operating range, typical conditions: T
op
= 27 o C; V
dd
= V
oc
=
2.7 V)
DC Characteristics
Symbol Parameter Conditions/Notes Min Typ Max Units
I
dd
Supply current all bands 9.6 12 mA
I
pd
Standby current all blocks disabled 0.2 μA
I
lb
Low battery voltage detector and
wake-up timer current
4 μA
I
x
Idle current crystal oscillator is ON 0.5 mA
V
lb
Low battery detection threshold programmable in 0.1 V steps 2.0 3.5 V
V
lba
Low battery detection accuracy ± 2.5 %
V
POR
V
dd
threshold required
to generate a POR
1.5 V
V
POR,hys
POR hysteresis larger glithches on the V
dd
generate a POR even above
the threshold V
POR
0.6 V
SR
Vdd
V
dd
slew rate for proper POR generation 0.1 V/ms
V
il
Digital input low level 0.3*V
dd
V
V
ih
Digital input high level 0.7*V
dd
V
I
il
Digital input current V
il
= 0 V -1 1 μA
I
ih
Digital input current V
ih
= V
dd
, V
dd
= 3.8 V -1 1 μA
V
ol
Digital output low level I
ol
= 2 mA 0.4 V
V
oh
Digital output high level I
oh
= -2 mA V
dd
-0.4 V
AC Characteristics
Symbol Parameter Conditions/Notes Min Typ Max Units
f
LO
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
BR
NRZ
OOK bit rate with internal digital filters, NRZ data 4.8 40 kbps
BR
M
OOK bit rate with internal digital filters,
manchester coded data 2.4 20 kbps
P
min
Receiver sensitivity BER 3* 10
-3
, BW = 85 kHz, PN9, -110 dBm