SX1233IMLTRT Semtech, SX1233IMLTRT Datasheet - Page 38

• Manufacturer Part Number: SX1233IMLTRT
• Description: RF Transceiver Extended Bands Japan-Korea
• Manufacturer: Semtech

Specifications of SX1233IMLTRT

• Transmitting Current: 95mA
• Data Rate: 600Kbps
• Rf Ic Case Style: QFN
• No. Of Pins: 24
• Supply Voltage Range: 1.8V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Receiving Current: 17mA

The different timings shown above are as follows:
Note
Rev 5 - June 2011
(sequencer or user)
Rx startup request
ADVANCED COMMUNICATIONS & SENSING
XO Started and
RxReady
ModeReady
PLL is locked
Group delay of the analog front end:
Channel filter’s group delay in FSK mode:
Channel filter’s group delay in OOK mode:
DC Cutoff’s group delay:
PLL lock time after AFC adjustment:
AFC sample time:
RSSI sample time:
RxReady
ModeReady
XO Started and PLL is locked
The above timings represent maximum settling times, and shorter settling times may be observed in real cases
Analog FE’s
group delay
Tana
(sequencer or user)
Rx startup request
ModeReady
RxReady
XO Started and PLL is locked
Channel Filter’s
group delay
Tcf
Analog FE’s
group delay
(sequencer or user)
Rx startup request
Tana
group delay
DC Cutoff’s
Tdcc
Channel Filter’s
group delay
sampling
Figure 18. Rx Startup - No AGC, no AFC
RSSI
Trssi
Analog FE’s
group delay
Tcf
Figure 20. Rx Startup - AGC and AFC
Figure 19. Rx Startup - AGC, no AFC
Tana
Received Packet Preamble may start
sampling
RSSI
Trssi
group delay
DC Cutoff’s
TS_RE_AGC&AFC
Channel Filter’s
Tpllafc = 5 / PLLBW (PLLBW = 300 kHz)
Tafc = 4 x Tbit
Trssi = 2 x int(4.RxBw.Tbit)/(4.RxBw)
Tdcc = max(8 , 2^(round(log2(8.RxBw.Tbit)+1)) / (4.RxBw)
Tana = 20 us
Tcf = 21 / (4.RxBw)
Tcf = 34 / (4.RxBw)
Tdcc
group delay
Channel Filter’s
group delay
Tcf
Tcf
TS_RE_AGC
sampling
TS_RE
RSSI
Trssi
Page 38
DC Cutoff’s
group delay
Received Packet Preamble may start
DC Cutoff’s
group delay
Tdcc
sampling
Tdcc
RSSI
Trssi
sampling
RSSI
Trssi
sampling
RSSI
(also denoted TS_AFC in the general specification)
Trssi
Channel Filter’s
group delay
The LNA gain is adjusted by
Received Packet Preamble may start
Tcf
the AGC, according to the
AFC
Tafc
sampling
RSSI
Trssi
RSSI result
Tpllafc
PLL
lock
DC Cutoff’s
group delay
Channel Filter’s
Tdcc
group delay
Reception of Packet
Tcf
sampling
RSSI
(aka TS_RSSI)
Trssi
group delay
DC Cutoff’s
Tdcc
The LNA gain is adjusted by
Reception of Packet
the AGC, according to the
Carrier Frequency is adjusted
Reception of Packet
RSSI result
DATASHEET
www.semtech.com
SX1233
by the AFC