Texas Instruments AFE7222 Evaluation Module AFE7222EVM AFE7222EVM 데이터 시트
제품 코드
AFE7222EVM
RX controls are
located on this tab
This section controls
power down options
on digital RX chain
The power meter
indicates the input
power level to the two
ADCs
Mixing section controls gain, offset,
mixing mode and NCO
This section controls
auxiliary ADC and its
mux input
TX Setup
The other portion of the RX setup is located on the Receive Control tab which includes register access for
the mixing stage, power meter, and power options for the digital RX section. Also, the auxiliary ADC
registers are configured on this tab.
the mixing stage, power meter, and power options for the digital RX section. Also, the auxiliary ADC
registers are configured on this tab.
Figure 11. Receive Control Tab in RX Setup
8
TX Setup
For the transmit output, the AFE722x EVM provides an option to directly route the DACs to SMA
connectors as well as an option to connect the dual DAC to an IQ modulator (TRF3703) for direct up-
conversion. shows the two options and the relevant 0
connectors as well as an option to connect the dual DAC to an IQ modulator (TRF3703) for direct up-
conversion. shows the two options and the relevant 0
Ω
resistors to switch between them.
When using the IQ modulator, there is a separate SMA connector on the EVM for the LO input. Also there
is a low pass filter between DAC and IQ modulator for image suppression with a default cut off frequency
of 125 MHz.
is a low pass filter between DAC and IQ modulator for image suppression with a default cut off frequency
of 125 MHz.
15
SLOU362 – February 2013
AFE722x Evaluation Module (AFE722xEVM) User's Guide
Copyright © 2013, Texas Instruments Incorporated