SX1212IWLTRT Semtech, SX1212IWLTRT Datasheet - Page 59

• Manufacturer Part Number: SX1212IWLTRT
• Description: IC TXRX 300MHZ-510MHZ 32-TQFN
• Manufacturer: Semtech

Specifications of SX1212IWLTRT

• Frequency: 300MHz ~ 510MHz
• Data Rate - Maximum: 150kbps
• Modulation Or Protocol: FSK, OOK
• Applications: AMR, ISM, Home Automation, Process Control
• Power - Output: 12.5dBm
• Sensitivity: -110dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 3mA
• Current - Transmitting: 25mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFN
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Modulation Type: FSK/OOK
• Package Type: TQFN EP
• Operating Supply Voltage (min): 2.1V
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed
• Other names: SX1212IWLTR

Rev 2 – June 18th, 2009
ADVANCED COMMUNICATIONS & SENSING
OOK_thresh_type
IF_gain
Freq_dev
BR_C
BR_D
PA_ramp
Low_power_rx
Trim_band
RF_frequency
R1
P1
S1
R2
P2
S2
Res
3-2
1-0
7-0
7-0
7-0
7-6
5
2-1
0
7-0
7-0
7-0
7-0
7-0
7-0
2-0
1
1
2
3
4
5
5
5
5
6
7
8
9
10
11
12
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
OOK demodulator threshold type:
00
01
10
11
Gain on the IF chain:
00
01
10
11
Single side frequency deviation in FSK Transmit mode:
Refer to sections 3.3.4 and 3.3.5
Fdev =
(d): D = “00000011” => Fdev = 100 kHz
C coefficient of the bit rate
Bit Rate =
(d): C = “0000111” => Bit Rate = 25 kb/s NRZ
D coefficient of the bit rate
Bit Rate =
(d): D = “0001111” => Bit Rate = 25 kb/s NRZ
Ramp control of the rise and fall times of the Tx PA regulator output voltage in
OOK mode:
00
01
10
11
Enables the low power mode of the receiver by reducing the bias current
of the LNA.
0 -> Low power mode disabled (d)
1 -> Low power mode enabled
VCO trimming: (d) 11
Selection between the two RF frequencies defined by the
SynthRi, SynthPi, and SynthSi registers:
0 -> frequency 1 for R1,P1,S1 (d)
1 -> frequency 2 for R2,P2,S2
R counter, active when RPS_select=”0”
(d):6Bh; default values of R1, P1, S1 generate 434.0 MHz in FSK mode
P counter, active when RPS_select=”0”
(d): 2Ah; default values of R1, P1, S1 generate 434.0 MHz in FSK mode
S counter, active when RPS_select=”0”
(d): 1Eh; default values of R1, P1, S1 generate 434.0 MHz in FSK mode
R counter, active when RPS_select=”1”
(d): 77h; default values of R2, P2, S2 generate 435.0 MHz in FSK mode
P counter, active when RPS_select=”1”
(d): 2Fh; default values of R2, P2, S2 generate 435.0 MHz in FSK mode
S counter, active when RPS_select=”1”
(d): 19h; default values of R2, P2, S2 generate 435.0 MHz in FSK mode
Reserved
(d):”000”
fixed threshold mode
peak mode (d)
average mode
reserved
maximal gain (0dB) (d)
-4.5 dB
-9dB
-13.5 dB
3us
8.5 us
15 us
23 us (d)
32
Page 59 of 77
⋅
2
2
f
(D +
XTAL
⋅
⋅
(C
(C
1)
+
+
f
f
XTAL
1).(D
XTAL
1).(D
, 0 ≤ D ≤ 255, where D is the value in the register.
+
+
1)
1)
, 0 ≤ C ≤ 255, where C is the value in the register.
, 15 ≤ D ≤ 255, where D is the value in the register.
www.semtech.com
SX1212