产品详情
- Wide flat performance IF BW
- Wide RF and LO BWs (~ 1.6GHz)
- Ideal for multi-carrier systems
- Drives ADC directly
- Ultra-linear +41dBm IP3O
- Low noise figure
- Excellent ACLR performance
- 200? 输出阻抗
- Fully integrated DPD demodulator
- 6mm x 6mm 36-pin 包裹
- Standby mode with fast recovery
- ICC: 275mA
The F1370 is a 高ly linear complex IF digital pre-distortion (DPD) demodulator with a built-in digital 步 attenuator (DSA) and single-pole double-throw 开关 (SP2Ts). It receives the signal coming out of the PA so that the I&Q data at the baseband can be pre-distorted before being sent to the Tx DAC to counteract the distortion inherent in the downstream PA. The signal coupled from the PA is adjusted via a DSA to a lower level and then sub-sampled at an IF frequency of ~200MHz which necessitates the need for a 高ly linear demodulator to downmix to quadrature IF from the Transmit frequency. By sampling IF_I and IF_Q independently and then digitally combining these signals, an effective doubling of the sample rate can be achieved. Any distortion in this path will degrade the performance of the DPD algorithm. By utilizing an ultra-linear demodulator with integrated DSA such as the F1320, the ACLR and/or power consumption of the full Tx system can be improved significantly.
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Design & Development (Boards and Kit)
Evaluation Board for F1370 DPD Demodulator
The F1370EVBI is a fully populated evaluation board which allows the customer to easily evaluate the F1370 DPD Demodulator. RF input, standby mode, and attenuator setting may be set using the F1370’s serial port input. The board also allows one to control the Standby mode using a separate STBY input. The board provides access to the part's SW_LATCH input, which allows one to disable serial control writes to ENb (Standby) and RF SW bits (A0, A2).
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