Overview
The Texas Instruments AFE7920IABJ is a high-performance, quad-channel RF-sampling analog front end (AFE) designed for advanced wireless communication systems. This device integrates four RF sampling transmitter chains, four RF sampling receiver chains, and up to two RF sampling digitizing auxiliary chains (feedback paths). It is particularly suited for generating and receiving 3G, 4G, and 5G signals in wireless base stations, with a wide bandwidth capability that supports multi-band operations.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Manufacturer | Texas Instruments | Package/Case | FCBGA (ABJ)-400 |
| Number of Transmit Channels | 4 | Number of Receive Channels | 4 |
| Number of Feedback Channels | 2 | ADC Resolution | 14-bit, 3-GSPS |
| DAC Resolution | 14-bit, 12-GSPS | TX Signal Bandwidth | Up to 1200 MHz |
| RX Signal Bandwidth | Up to 600 MHz | Feedback Signal Bandwidth | Up to 1200 MHz |
| Digital Step Attenuator (TX) | 40 dB range, 1-dB analog and 0.125-dB digital steps | Digital Step Attenuator (RX) | 25 dB range, 0.5-dB steps |
| Digital Step Attenuator (FB) | 25 dB range, 0.5-dB steps | SerDes Data Interface | JESD204B and JESD204C compliant, up to 29.5 Gbps |
| Operating Temperature | -40 to 85°C | Package Size | 17-mm × 17-mm, 0.8-mm pitch |
Key Features
- Quad RF sampling 12-GSPS transmit DACs and 14-bit 3-GSPS receive ADCs.
- Dual RF sampling 3-GSPS feedback ADCs for the AFE7920 series.
- Single or dual digital up converters (DUCs) and down converters (DDCs) for TX and RX, supporting up to 1200 MHz and 600 MHz combined signal bandwidth respectively.
- Digital Step Attenuators (DSA) with 40 dB range for TX, 25 dB range for RX and FB, with precise step sizes.
- Supports TDD operation with fast switching between TX and RX.
- Internal PLL/VCO for generating DAC/ADC clocks, with optional external clocking solution.
- JESD204B and JESD204C compliant SerDes interface with up to 29.5 Gbps data rate.
- Dual NCOs for fast frequency switching.
- Integrated analog peak power detectors and digital power detectors for automatic gain control and RF overload protection.
Applications
- Macro remote radio unit (RRU) and active antenna system mMIMO (AAS).
- Small cell base stations and repeaters.
- Distributed Antenna Systems (DAS).
- Wireless communication systems including Wi-Fi, Bluetooth, and Zigbee networks.
- IoT devices and industrial automation systems requiring high-speed, low-latency RF communication.
Q & A
- What is the AFE7920IABJ?
The AFE7920IABJ is a high-performance, quad-channel RF-sampling analog front end (AFE) from Texas Instruments, designed for advanced wireless communication systems.
- What are the key specifications of the AFE7920IABJ?
It includes 4 transmit, 4 receive, and 2 feedback channels, with 14-bit 3-GSPS ADCs and 14-bit 12-GSPS DACs, and supports up to 1200 MHz and 600 MHz signal bandwidth for TX and RX respectively.
- What types of digital converters does the AFE7920IABJ support?
The device supports single or dual digital up converters (DUCs) and down converters (DDCs) for both TX and RX channels.
- What is the operating temperature range of the AFE7920IABJ?
The operating temperature range is -40 to 85°C.
- What is the package type and size of the AFE7920IABJ?
The package type is FCBGA (ABJ)-400, with a size of 17-mm × 17-mm and a 0.8-mm pitch.
- What are the applications of the AFE7920IABJ?
It is used in macro remote radio units, active antenna systems, small cell base stations, repeaters, and distributed antenna systems, among others.
- How does the AFE7920IABJ support TDD operations?
The device supports TDD operation with fast switching between TX and RX, and can dynamically switch between traffic receiver and wideband feedback receiver in TDD mode.
- What is the SerDes data interface specification of the AFE7920IABJ?
The device has a JESD204B and JESD204C compliant SerDes interface with up to 29.5 Gbps data rate.
- How can I order the AFE7920IABJ?
You can order the AFE7920IABJ by selecting the 'Add to Cart' button on the product listing page and proceeding to the checkout to enter your payment and shipping information.
- What is the warranty period for the AFE7920IABJ?
The warranty period is typically 1 year, covering defects in materials and workmanship under normal use.
