
2
Elec ri cal Char ac er s ics (typ cal val ues given for 3.0 Vdc power sup ply, 25
o
C)
3
4
5
6
7
9
11
12
13
14
15
16
17
19
ASH Transceiver Pin Out
RFIO
8
2
10
20
1
18
LPFADJ
RREF
THLD2
AGCCAP
PKDET
BBOUT
CMPIN
RXDATA
TXMOD
THLD1
PRATE
PWIDTH
GND1
VCC1
GND2
VCC2
GND3
CNTRL0
CNTRL1
Notes:
1. Typ cal sen si iv ty data is based on a 10
-3
bit er or rate (BER), us ng DC-balanced data. There are two test meth ods com monly used to
mea sure OOK/ASK re ceiver sen si iv ty, the “100% AM” test method and the “Pulse” test method. Sen si iv ty data is given for both test meth
ods. See Ap pen dix 3.8 in the
ASH Trans ceiver De signer’s Guide
for the de ails of each test meth od, and for sen si iv ty curves for a 2.2 to
3.7 V sup ply voltage range at five op er at ng tem per a ures. The ap pli ca ion/test circuit and com po nent val ues are shown on the next page and
in the
De signer’s Guide
.
2. At low data rates it is pos si ble to ad ust the ASH pulse gen er a or to trade-off some re ceiver sen si iv ty for lower op er at ng cur ent. Sen si iv
ity data and re ceiver cur ent are given at 2.4 kbps for both high sen si iv ty op er a ion (R
PR
= 330 K) and low cur ent op er a ion (R
PR
= 1100 K).
3. Data is given with the ASH ra dio matched to a 50 ohm load. Matching com po nent val ues are given on the next page.
4. See Ta ble 1 on Page 8 for ad di ional in or ma ion on ASH ra dio event tim ng.
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Trans mit er Performance
Peak RF Out put Power, 250 μA TXMOD Current
P
O
3
0
dBm
Peak Cur ent, 250 μA TXMOD Current
I
TP
3
7.5
mA
2
nd
- 4
th
Har monic Out put
3
-50
dBm
5
th
- 10
th
Har monic Out puts
3
-55
dBm
Non-harmonic Spu i ous Outputs
3
-55
dBm
OOK Turn On/Turn Off Times
t
ON
/t
OFF
4
12/6
μs
ASK Out put Rise/Fall Times
t
TR
/t
TF
4
1.1/1.1
μs
Sleep Mode Current
I
S
0.7
μA
Power Sup ply Volt age Range
V
CC
2.2
3.7
Vdc
Power Sup ply Volt age Ripple
10
mV
P-P
Am bi ent Op er ating Tem per a ure
T
A
-10
55
o
C
SM-20H Package Drawing
C
D
E
F
G
A
B
H
Di men sion
mm
Inches
Min
Nom
Max
Min
Nom
Max
A
9.881
10.033
10.135
.389
.395
.400
B
6.731
6.858
6.985
.265
.270
.275
C
1.778
1.930
2.032
.070
.076
.080
D
1.651
1.778
1.905
.065
.070
.075
E
0.381
0.508
0.635
.015
.020
.025
F
0.889
1.016
1.143
.035
.040
.045
G
3.175
3.302
3.429
.0125
.130
.135
H
1.397
1.524
1.651
.055
.060
.065