RF & microwave

The LMX8410L is a high-performance wideband (RF frequency input from 4 to 10 GHz) I/Q demodulator with an integrated LO and IF amplifier. With IIP3 of 28 dBm and NF of 15 dB (both at 5GHz), it provides excellent dynamic range for high performance applications. The device offers large complex bandwidth of 2.7 GHz for high data-rate applications. The LMX8410L offers an automatic DC offset correction algorithm that reduces the offset to less than ±2 mV. Fine control of gain and phase of I and Q channels is enabled using SPI interface to achieve high image rejection. The LMX8410L has a high level of integration providing high performance while saving board space and complexity. It integrates a wideband RF input balun, eliminating the need for external baluns. It integrates a high-performance PLL and VCO, eliminating the need for external LO and LO driver. The device also integrates an IF amplifier and several low noise LDOs, further simplifying the board. The LMX8410L integrates a very low-noise synthesizer, with a PLL FOM of –236 dBc/Hz, providing up to 56.5-dBc DSB integrated noise at 5 GHz carrier. The LO allows for phase synchronization across multiple devices. The high-performance synthesizer output can be brought out to drive another stage or a data converter. The integrated LO can be bypassed for applications that share a common external LO.

The AWR294x is a single chip mmWave Sensor composed of a FMCW transceiver, capable of operation in the 76-81 GHz band, radar data processing elements, and peripherals for in-vehicle networking. It is built with TI’s low power, 45 nm RFCMOS process and enables unprecedented levels of integration in a small form factor and minimal BOM. AWR294x is an ideal solution for low power, self-monitored, ultra-accurate radar systems in the automotive space. TI’s low-power, 45-nm RFCMOS process enables a monolithic implementation of a 3-4 TX, 4 RX system with integrated PLL, VCO, mixer, and baseband ADC. Integrated in the DSP Subsystem (DSS), is TI’s high-performance C66x DSP for radar signal processing. The device includes a Radio Processor Subsystem (RSS), which is responsible for radar front-end configuration, control, and calibration. Within the Main Subsystem (MSS), the device implements a user programmable ARM R5F allowing for custom control and automotive interface applications. The Hardware Accelerator block (HWA 2.0) supplements the DSS and MSS by offloading comon radar processing such as FFT, Constant False Alarm rate (CFAR), scaling, and compression. This saves MIPS on the DSS and MSS, opening up resources for custom applications and higher level algorithms. A Hardware Security Module (HSM) is also provisioned in the device (available for only Secure Part variants). The HSM consists of a programmable ARM Cortex M4 core and the necessary infrastructure to provide a secure zone of operation within the device. Simple programming model changes can enable a wide variety of sensor implementation (Short, Mid, Long) with the possibility of dynamic reconfiguration for implementing a multimode sensor. Additionally, the AWR294x device is provided as a complete platform solution including TI hardware and software reference designs, software drivers, sample configurations, API guides, and user documentation.

The TRF1208 is a very high performance, RF Amplifier optimized for radio frequency (RF) applications. This device is ideal for ac-coupled applications that require a single-ended to differential conversion when driving an analog-to-digital converter (ADC) such as the high performance ADC12DJ5200RF. The on-chip matching components simplify printed circuit board (PCB) implementation and provide the highest performance over the usable bandwidth. The device is fabricated in Texas Instruments’ advanced complementary BiCMOS process and is available in a space-saving, WQFN-FCRLF package. It operates on a single-rail supply and consumes about 138 mA of active current. A power-down feature is also available for power savings.

The LMX2571-EP device is a low-power, high-performance, wideband PLLatinum™ RF synthesizer that integrates a delta-sigma fractional N PLL, multiple core voltage-controlled oscillator (VCO), programmable output dividers and two output buffers. The VCO cores work up to 5.376 GHz resulting in continuous output frequency range of 10 MHz to 1344 MHz. This synthesizer can also be used with an external VCO. To that end, a dedicated 5-V charge pump and an output divider are available for this configuration. A unique programmable multiplier is also incorporated to help improve spurs, allowing the system to use every channel even if it falls on an integer boundary. The output has an integrated SPDT switch that can be used as a transmit and receive switch in FDD radio application. Both outputs can also be turned on to provide 2 outputs at the same time. The LMX2571-EP supports direct digital FSK modulation through programming or pins. Discrete level FSK, pulse shaping FSK, and analog FM modulation are supported. A new FastLock technique can be used allowing the user to step from one frequency to the next in less than 1.5 ms even when an external VCO is used with a narrow band loop filter.

The LMH2121 is an accurate fast-responding power detector / RF envelope detector. Its response between an RF input signal and DC output signal is linear. The typical response time of 165 ns makes the device suitable for an accurate power setting in handsets during a rise time of RF transmission slots. It can be used in all popular communications standards: 2G/3G/4G/WAP. The LMH2121 has an input range from −28 dBm to +12 dBm. Over this input range the device has an intrinsic high insensitivity for temperature, supply voltage and loading. The bandwidth of the device is from 100 MHz to 3 GHz, covering 2G/3G/4G/WiFi wireless bands. As a result of the unique internal architecture, the device shows an extremely low part-to-part variation of the detection curve. This is demonstrated by its low intercept and slope variation as well as a very good linear conformance. Consequently the required characterization and calibration efforts are low. The device is active for EN = High; otherwise it is in a low power consumption shutdown mode. To save power and allow for two detector outputs in parallel, the output (OUT) is high impedance during shutdown. The LMH2121 is offered in a tiny 4-bump DSBGA package: 0.866 mm x 1.07 mm x 0.6 mm.

The AFE7903 is a high performance, wide bandwidth multi-channel transceiver, integrating two RF sampling transmitter chains and two RF sampling receiver chains. With operation up to 7.4 GHz, this device enables direct RF sampling in the HF, VHF, UHF, L, S and C-band frequency ranges without the need for additional frequency conversions stages. This improvement in density and flexibility enables high-channel-count, multi-mission systems. The TX signal paths support interpolation and digital up conversion options that deliver up to 400 MHz of signal bandwidth. The output of the DUCs drives a 12 GSPS DAC (digital to analog converter) with a mixed mode output option to enhance 2nd Nyquist operation. The DAC output includes a variable gain amplifier (TX DSA) with 40 dB range and 1 dB analog and 0.125 dB digital steps. space Each receiver chain includes a 25 dB range DSA (Digital Step Attenuator), followed by a 3 GSPS ADC (analog-to-digital converter). Each receiver channel has an analog peak power detector and various digital power detectors to assist an external or internal autonomous automatic gain controller, and RF overload detectors for device reliability protection. Flexible decimation options provide optimization of data bandwidth up to 400 MHz for two RX. The device contains a SYSREF timing detector to allow optimization of the SYSREF input timing relative to the device clock.