AX5043-QFN28-TU AXSEM, AX5043-QFN28-TU Datasheet - Page 38

• Manufacturer Part Number: AX5043-QFN28-TU
• Description: RF Transceiver Narrow-Band-IC
• Manufacturer: AXSEM

Specifications of AX5043-QFN28-TU

• Number Of Receivers: 1
• Number Of Transmitters: 1
• Wireless Frequency: 70 MHz to 1050 MHz
• Interface Type: SPI
• Output Power: 18 dBm to 22 dBm
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Maximum Supply Current: 60 mA
• Minimum Operating Temperature: - 40 C
• Modulation: ASK, FSK
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

38
Circuit Description
General Purpose ADC (GPADC)
The
AX5043 features a
general purpose ADC. The ADC input pins are GPADC1 and GPADC2. The
ADC can be used either in differential (GPADC13) or single-ended mode (GPADC1 and GPADC2).
GPADCCTRL
To start a single conversion, write 1 to the BUSY bit in the
register. Then wait for the
BUSY bit to clear, or the GPADC Interrupt to be asserted. Each channel, whose corresponding
GPADCCTRL
enable bit in register
is set (GPADC13, GPADC1, GPADC2, GPADC3) is sampled in
sequence. The results are stored in the corresponding result-registers. If CHISOL is set in register
GPADCCTRL
, a dummy conversion with zero voltage is performed between each enabled channel.
This may improve channel isolation at the expense of double the conversion time. The GPADC
Interrupt is cleared by reading any result register. The GPADC can only be used if the receiver or
transmitter are disabled.
GPADCCTRL
If continuous sampling is desired, set the CONT bit in register
. The desired sampling
GPADCPERIOD
rate can be specified in the
register.
Version 0.2
Preliminary
Datasheet AX5043