Electrical Characteristics (typical values given for 3.0 Vdc power supply, 25
o
C)
Characteristic
Receiver Out-of-Band Rejection, ±5% f
O
Receiver Ultimate Rejection
Sleep Mode Current
Power Supply Voltage Range
Power Supply Voltage Ripple
Ambient Operating Temperature
T
A
-40
Sym
R
±5%
R
ULT
I
S
V
CC
2.2
Notes
3
3
Minimum
Typical
80
100
0.7
3.7
10
85
Maximum
Units
dB
dB
µA
Vdc
mV
P-P
o
C
Notes:
1. Typical sensitivity data is based on a 10
-3
bit error rate (BER), using DC-balanced data. There are two test methods commonly used to
measure OOK/ASK receiver sensitivity, the “100% AM” test method and the “Pulse” test method. Sensitivity data is given for both test meth-
ods. See Appendix 3.8 in the
ASH Transceiver Designer’s Guide
for the details of each test method, and for sensitivity curves for a 2.2 to
3.7 V supply voltage range at five operating temperatures. The application/test circuit and component values are shown on the next page and
in the
Designer’s Guide.
2. At low data rates it is possible to adjust the ASH pulse generator to trade-off some receiver sensitivity for lower operating current. Sensitiv-
ity data and receiver current are given at 1.2 kbps for both high sensitivity operation (R
PR
= 330 K) and low current operation (R
PR
= 2000 K).
3. Data is given with the ASH radio matched to a 50 ohm load. Matching component values are given on the next page.
4. See Table 1 on Page 8 for additional information on ASH radio event timing.
S M -2 0 L P a c k a g e D r a w in g
0 .3 8 "
(9 .6 5 )
0 .0 8 "
(2 .0 3 )
0 .1 2 5 "
(3 .2 0 )
A S H T r a n s c e iv e r P in O u t
G N D 1
0 .0 2 "
(0 .5 1 )
R F IO
1
2 0
1 9
2
3
4
5
6
7
8
9
1 0
1 1
R R E F
1 8
1 7
1 6
1 5
1 4
1 3
1 2
G N D 3
C N T R L 0
C N T R L 1
V C C 2
P W ID T H
P R A T E
T H L D 1
T H L D 2
V C C 1
A G C C A P
0 .4 3 "
(1 0 .9 )
0 .0 4 "
(1 .0 2 )
P K D E T
B B O U T
C M P IN
0 .0 7 5 "
(1 .9 0 )
0 .1 3 "
(3 .3 0 )
R X D A T A
T X M O D
L P F A D J
G N D 2
2
RFM [ RF MONOLITHICS, INC ]
