Transceiver Event Timing, 3.0 Vdc, -40 to +85
0
C
Event
Turn On to Receive
Turn On to TXOOK
Turn On to TXASK
RX to TXOOK
RX to TXASK
TXOOK to RX
TXASK to RX
Sleep to RX
Sleep to TXOOK
Sleep to TXASK
RX to Sleep
TXOOK to Sleep
TXASK to Sleep
AGC Engage
AGC Hold-In
PKDET Attack Time Constant
PKDET Decay Time Constant
PRATE Interval
PWIDTH RFA1
PWIDTH RFA2
PRATE Cycle
PWIDTH High (RFA1 & RFA2)
LPF Group Delay
LPF 3 dB Bandwidth
BBOUT-CMPIN Time Constant
Symbol
t
PR
t
PTO
t
PTA
t
RTO
t
RTA
t
TOR
t
TAR
t
SR
t
STO
t
STA
t
RS
t
TOS
t
TAS
t
AGC
t
AGH
t
PKA
t
PKD
t
PRI
t
PW1
t
PW2
t
PRC
t
PWH
t
FGD
f
LPF
t
BBC
Time
3*t
BBC
+ 15 ms
15 ms
15 ms
12 µs
12 µs
3*t
BBC
3*t
BBC
3*t
BBC
16 µs
16 µs
10 µs
10 µs
10 µs
5 µs
C
AGC/
19.1
C
PKD
/4167
1000*t
PKA
0.1 to 5 µs
0.55 to 1 µs
1.1*t
PW1
0.1 to 1.1 µs
0.05 to 0.55 µs
1750/f
LPF
1445/R
LPF
0.064*C
BBO
Min/Max
max
max
max
max
max
max
max
max
max
max
max
max
max
max
min
min
min
range
range
range
range
range
max
min
min
Test Conditions
10 ms supply voltage rise time
10 ms supply voltage rise time
10 ms supply voltage rise time
1 µs CNTRL1 fall time
1 µs CNTRL0 fall time
1 µs CNTRL1 rise time
1 µs CNTRL0 rise time
1µs CNTRL0/CNTROL1 rise times
1 µs CNTRL0 rise time
1 µs CNTRL1 rise time
1µs CNTRL0/CNTROL1 fall times
1 µs CNTRL0 fall time
1 µs CNTRL1 fall time
1 µs rise time, -30 dBm signal
CAGC in pF, t
AGH
in µs
C
PKD
in pF, t
PKA
in µs
t
PKD
and t
PKA
in µs
low data rate mode
low data rate mode
low data rate mode
high data rate mode
high data rate mode
t
FGD
in µs, f
LPF
in kHz
f
LPF
in kHz, R
LPF
in kilohms
t
BBC
in µs, C
BBO
in pF
Notes
time until receiver operational
time until TXMOD can modulate transmitter
time until TXMOD can modulate transmitter
TXMOD low 1 µs before CNTRL1 falls
TXMOD low 1 µs before CNTRL0 falls
time until receiver operational
time until receiver operational
time until receiver operational
time until TXMOD can modulate transmitter
time until TXMOD can modulate transmitter
time until transceiver is in power-down mode
time until transceiver is in power-down mode
time until transceiver is in power-down mode
RFA1 switches from 35 to 5 dB gain
user selected; longer than t
PKD
user selected
slaved to attack time
user selected mode
user selected mode
user selected mode
user selected mode
user selected mode
user selected
user selected
user selected
Table 1
RFM [ RF MONOLITHICS, INC ]
