AX5243
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Table 1. PIN FUNCTION DESCRIPTIONS
Symbol Pin(s) Type Description
VDD_ANA 1 P Analog power output, decouple to neighboring GND
GND 2 P Ground, decouple to neighboring VDD_ANA
ANTP 3 A Differential antenna input/output
ANTN 4 A Differential antenna input/output
VDD_ANA 5 P Analog power output, decouple to GND
FILT 6 A Optional synthesizer filter
L2 7 A Optional synthesizer inductor, should be shorted with L1 if not used.
L1 8 A Optional synthesizer inductor, should be shorted with L2 if not used.
SYSCLK 9 I/O Default functionality: Crystal oscillator (or divided) clock output
Can be programmed to be used as a general purpose I/O pin
Selectable internal 65 kW pullup resistor
SEL 10 I Serial peripheral interface select
CLK 11 I Serial peripheral interface clock
MISO 12 O Serial peripheral interface data output
MOSI 13 I Serial peripheral interface data input
IRQ 14 I/O Default functionality: Transmit and receive interrupt
Can be programmed to be used as a general purpose I/O pin
Selectable internal 65 kW pullup resistor
TCXO_EN 15 I/O General purpose I/O pin which can be programmed to enable an
external TCXO
Selectable internal 65 kW pullup resistor
VDD_IO 16 P Power supply 1.8 V – 3.3 V
GPADC1 17 A GPADC input, must be connected to GND if not used
GPADC2 18 A GPADC input, must be connected to GND if not used
CLK16N 19 A Crystal oscillator input/output
CLK16P 20 A Crystal oscillator input/output
GND Center pad P Ground on center pad of QFN, must be connected
A = analog input
I = digital input signal
O = digital output signal
I/O = digital input/output signal
N = not to be connected
P = power or ground
All digital inputs are Schmitt trigger inputs, digital input
and output levels are LVCMOS/LVTTL compatible and 5 V
tolerant.
AX5243
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Pinout Drawing
Figure 2. Pinout Drawing (Top View)
1
2
3
4
5
VDD_ANA
GND
ANTN
VDD_ANA
ANTP
MISO
MOSI
11
15
14
13
12
IRQ
TCXO_EN
CLK
910876
19 16
18
1720
CLK16P
GPADC1
CLK16N
GPADC2
VDD_IO
AX5243
Exposed center pad of the QFN package: GND
FILT
L2
L1
SYSCLK
SEL
AX5243
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SPECIFICATIONS
Table 2. ABSOLUTE MAXIMUM RATINGS
Symbol Description Condition Min Max Units
VDD_IO Supply voltage 0.5 5.5 V
IDD Supply current 200 mA
P
tot
Total power consumption 800 mW
P
i
Absolute maximum input power at receiver input ANTP and ANTN
pins in RX mode
10 dBm
I
I1
DC current into any pin except ANTP, ANTN 10 10 mA
I
I2
DC current into pins ANTP, ANTN 100 100 mA
I
O
Output Current 40 mA
V
ia
Input voltage ANTP, ANTN pins 0.5 5.5 V
Input voltage digital pins 0.5 5.5 V
V
es
Electrostatic handling HBM 2000 2000 V
T
amb
Operating temperature 40 85 °C
T
stg
Storage temperature 65 150 °C
T
j
Junction Temperature 150 °C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DC Characteristics
Table 3. SUPPLIES
Symbol Description Condition Min Typ Max Units
T
AMB
Operational ambient temperature 40 27 85 °C
VDD_IO I/O and voltage regulator supply voltage 1.8 3.0 3.6 V
V
BOUT
Brownout threshold Note 1 1.3 V
I
DSLLEP
Deep Sleep current:
All analog and digital functions are
powered down
PWRMODE = 0x01 50 nA
I
PDOWN
Powerdown current:
Register file contents preserved
PWRMODE = 0x00 400 nA
I
WOR
Wakeuponradio mode:
Low power timer and WOR
statemachine are running at 640 Hz
PWRMODE = 0x0B 500 nA
I
STANBY
Standbycurrent:
All power domains are powered up,
crystal oscillator and references are
running
PWRMODE = 0x05 230
mA
I
RX
Current consumption RX
PWRMODE = 0x09
RF Frequency Subsystem:
Internal VCO and internal loopfiter
868 MHz, datarate 6 kbps 9.5
mA
169 MHz, datarate 6 kbps 6.5
868 MHz, datarate 100 kbps 11
169 MHz, datarate 100 kbps 7.5
I
TXDIFF
Current consumption TX 868 MHz, 16 dBm, FSK, Note 2
RF Frequency Subsystem:
Internal VCO and loopfilter
48 mA
1. Digital circuitry is functional down to typically 1 V.
2. Measured with optimized matching networks.

AX5243-1-TA05

Mfr. #:
Manufacturer:
ON Semiconductor
Description:
RF Transceiver RADIO TRANSCEIVER
Lifecycle:
New from this manufacturer.
Delivery:
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