Part Number: AD9361BBCZ

Manufacturer: Analog Devices Inc.


Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of AD9361BBCZ

Datasheet  AD9361BBCZ datasheet
Category RF/IF and RFID
Family RF Transceiver ICs
Manufacturer Analog Devices Inc.
Packaging Tray
Part Status Active
Type TxRx Only
RF Family/Standard Cellular
Protocol LTE
Frequency 70MHz ~ 6GHz
Data Rate (Max)
Power – Output 8dBm
Memory Size
Serial Interfaces SPI
Voltage – Supply 1.3V
Current – Receiving 175mA ~ 445mA
Current – Transmitting 240mA ~ 820mA
Operating Temperature -40°C ~ 85°C
Package / Case 144-LFBGA, CSPBGA

The AD9361BBCZ is a versatile and strong radio frequency (RF) Agile Transceiver TM for 3G and 4G base station applications. Because of its great performance, wideband capability, and programmability, it is an excellent choice for a variety of transceiver applications. This integrated device incorporates a versatile mixed-signal baseband portion, an RF front end, and integrated frequency synthesizers. This one-of-a-kind combo streamlines the design process by providing a programmable digital interface to a CPU.

Key Features

  • Frequency Range:The AD9361 has a broad frequency range. Its receiver LO operates between 70 MHz and 6.0 GHz, while its transmitter LO runs between 47 MHz and 6.0 GHz. This huge collection includes both licensed and unauthorized bands.
  • Channel Bandwidth:The device provides channel bandwidths ranging from less than 200 kHz to 56 MHz, allowing it to accommodate a wide range of application requirements.
  • Direct Conversion Receivers:The AD9361 includes two independent direct conversion receivers with high noise figure and linearity. Because each RX subsystem incorporates AGC, dc offset correction, quadrature correction, and digital filtering, these functionalities are no longer required in the digital baseband.
  • Manual Gain Modes:The device has flexible manual gain options that can be regulated externally.
  • High-Quality Transmitters:The transmitters achieve great modulation accuracy with ultra-low noise using a direct conversion architecture. This design achieves an outstanding TX error vector magnitude (EVM) of 40 dB, giving the system plenty of room to choose an external power amplifier (PA).
  • Integrated Phase-Locked Loops (PLLs):The completely integrated PLLs provide low power Fractional-N frequency synthesis for all receive and transmit channels. Channel isolation, which is required for frequency division duplex (FDD) systems, is included in the design.
  • Power Efficiency:A 1.3 V regulator can be used to power the AD9361 core directly. The device also features a variety of power-saving settings for reducing power consumption during normal use.
  • Control and Interface:The AD9361 is programmed using a standard 4-wire serial port and four real-time I/O control pins.

Functional Description

RF Reception (Rx) Process

  • Signal Reception: The RF signal is received by the AD9361BBCZ via its antenna input. The signal may include data from many communication standards or frequency bands.
  • Low-Noise Amplification: The received signal is first amplified by a low-noise amplifier (LNA) to increase its weak signal strength while reducing extra noise.
  • Down conversion and mixing: The signal is mixed with a local oscillator (LO) signal to be down converted to an intermediate frequency (IF). This procedure aids in decreasing the frequency of the signal to a more tolerable range for further processing.
  • Filtering: A down converted signal is filtered with an analog filter to remove undesired signals and noise, ensuring that only the necessary frequency components remain.
  • Analog-to-Digital Conversion (ADC): The filtered analog signal is then converted into a digital representation using an ADC. The resolution and speed of the ADC are critical in accurately recording the signal’s features.
  • Digital Down conversion: The down converted signal is further processed in the digital domain. This involves digital filtering and down sampling to obtain the appropriate baseband signal or data.
  • Demodulation: The demodulation process retrieves the original data from the modified carrier signal, depending on the modulation method used. This is accomplished by reversing the modulation method used during transmission.
  • Advanced Processing: To improve the quality of the demodulated signal and prepare it for future processing or user consumption, it may be subjected to extra processing such as automatic gain control (AGC), digital filtering, and equalization.

RF Transmission (Tx) Process

The AD9361BBCZ generates baseband signals after receiving baseband data from the communication system or device. This information is represented by this data.

  • Digital Modulation: The baseband data is modulated with the appropriate modulation algorithm (e.g., QPSK, QAM) to produce a higher frequency carrier signal suited for transmission.
  • Digital Up conversion: Using a digital up conversion technique, the modulated signal is digitally up converted to the desired RF frequency.
  • Digital-to-Analog Conversion (DAC): A DAC converts the up converted digital signal back to analog, preparing it for the RF transmission line.
  • Filtering: An analog filter removes undesired signal components and harmonics from the DAC output, allowing only the required signal to be delivered.
  • Up conversion and mixing: The filtered signal is mixed with a LO signal to achieve the required transmission frequency.
  • Amplification: To attain the appropriate output power level, the upconverted signal is amplified using a power amplifier (PA).
  • Antenna Transmission: The amplified RF signal is then transmitted wirelessly via the antenna output.

Advanced Features

Automatic Gain Control (AGC)

  • AGC is a critical function that automatically adjusts the gain of the received signal to keep the signal level consistent.
  • It guarantees that the received signal intensity is within the acceptable range, preventing distortion from both weak and powerful transmissions.

Digital Filtering

  • The AD9361BBCZ may provide digital filtering to improve signal quality.
  • Digital filters can reduce noise, interference, and undesirable frequency components, resulting in a higher signal-to-noise ratio.


  • In circumstances when the channel creates distortion or attenuates specific frequencies, equalization can be used to compensate.
  • Adaptive equalization algorithms can change the properties of the signal to reduce channel-induced distortions.

Signal Flow Summary

The AD9361BBCZ handles RF reception and transmission with ease. It all starts with signal amplification, down conversion, and filtering in reception. Following that, it does analog-to-digital conversion, digital down conversion, demodulation, and advanced processing. Baseband signal creation and digital modulation are the first steps in transmission, followed by digital up conversion, digital-to-analog conversion, filtering, mixing, amplification, and antenna transmission. Advanced features such as AGC, digital filtering, and equalization are crucial in maintaining signal quality and maximizing performance during these operations.


The AD9361BBCZ enables engineers to create novel communication solutions that bridge gaps, enable global connectivity, and fuel the Internet of Things (IoT) revolution in the ever-changing wireless technology landscape. Its critical role in facilitating seamless communication emphasizes its significance in constructing the present connected world.

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