XR18W753 Datasheet, PDF (4/27 Pages) Exar Corporation – SINGLE CHIP 868MHZ TO 956MHZ RF TRANSCEIVER

XR18W753
SINGLE CHIP 868MHZ TO 956MHZ RF TRANSCEIVER
PIN DESCRIPTIONS
REV. 1.0.0
NAME
AGND
AVDD19
AGND
AVDD19
RFCM1
RFIN+
RFIN-
RFCM2
AVDD19
AGND
AVDD
AGND
R1-
R1+
AVDD19
AGND
VDD_VCO
AGND
ATI+
ATI-
ATO+
ATO-
DGND
TEST0
SCL
SDA
A0
A1
IRQ#
TEST1
PIN
TYPE
DESCRIPTION
1
Ground
Analog ground for IF part of RX and BB part of TX
2
Power I
Analog VDD (1.9V ± 0.1V) for IF part of RX and BB part of TX.
3
Ground
Analog ground for RX frontend and PA
4
Power I
Analog VDD (1.9V ± 0.1V) for LNA and PA.
5
Analog O _{Common Mode voltage output for matching network.}
Voltage output TX: 1.9V RX: ≈ 170mV
6
Analog I/O _{Differential RF signals}
7
Analog I/O
8
Analog O _{Common Mode voltage output for matching network.}
Voltage output TX: 1.9V RX: ≈ 170mV
9
Power I
Analog VDD (1.9V ± 0.1V) for LNA and PA.
10
Ground
Analog ground for RX frontend and PA
11
Power I
Analog VDD (1.9V ± 0.1V) for LNA and PA.
12
Ground
Analog ground for IF part of RX and BB part of TX.
13
Analog I/O _{External resistor to fix PA power. 470 ohm resistor connected between}
14
R1- and R1+ is recommended.
15
Power I
Analog VDD (1.9V ± 0.1V) for synthesizer.
16
Ground
Analog ground for synthesizer.
17
Analog O _{VDD of VCO. VDD = 1.9V ± 0.1V (for decoupling).}
18
Ground
Analog ground for VCO.
19
Analog I
Analog Test Input
20
Analog I
Analog Test Input
21
Analog O _{Analog Test Output}
22
Analog O _{Analog Test Output}
23
Ground
Digital ground
24
Digital I
Factory Test Mode. For normal operation, this pin should be connected
to GND.
25
Digital OD Open-drain I2C serial clock
26
DigitaI OD Open-drain I2C serial data
27
Digital I
I2C Address bit-0
28
Digital I
I2C Address bit-1
29
Digital O
Interrupt output (active low, open-drain).
30
Digital I
Factory Test Mode. For normal operation, this pin should be connected
to GND.
4