Overview
The ADF5904ACPZ is a 4-channel, 24 GHz receiver downconverter produced by Analog Devices Inc. This integrated circuit is designed for high-frequency applications, particularly in radar systems. Each channel of the ADF5904 features a single-ended RF input with an on-chip balun, followed by a differential low noise amplifier (LNA) and a downconverter mixer with differential output buffers. The device also includes a shared LO path with an on-chip balun and supports control through a simple 3-wire interface. The ADF5904 is packaged in a compact 32-lead, 5 mm × 5 mm LFCSP package, making it suitable for space-constrained designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| RF Frequency | 24 | GHz |
| Number of Channels | 4 | - |
| RF Signal Bandwidth | 250 | MHz |
| Rx to IF Isolation | 30 | dB |
| Rx Output Impedance | 900 | Ω (differential) |
| LO Input Buffer Frequency | 24 | GHz |
| RF and LO S11 at 50 Ω | -5 | dB |
| Analog Power Supply Range | 3.3 V ± 5% | V |
| Package Type | 32-lead LFCSP (5 mm × 5 mm) | - |
| ESD Performance (HBM) | 2000 | V |
| ESD Performance (CDM) | 500 | V |
Key Features
- Integrated baluns for single-ended RF and LO inputs, converting them to differential signals for the downconverter path.
- Differential low noise amplifiers (LNAs) and downconverter mixers with differential output buffers for each channel.
- A shared LO path with an on-chip balun to drive the mixers.
- Control of on-chip registers through a simple 3-wire interface.
- Temperature sensor with analog output.
- Compact 32-lead, 5 mm × 5 mm LFCSP package.
- Qualified for automotive applications.
Applications
- Automotive radars: The ADF5904 is particularly suited for use in automotive radar systems due to its high-frequency capabilities and robust design.
- Industrial radars: It can be used in various industrial radar applications requiring high precision and reliability.
- Microwave (μW) radar sensors: The device is also applicable in microwave radar sensors where high-frequency downconversion is necessary.
Q & A
- What is the RF frequency range of the ADF5904?
The ADF5904 operates at an RF frequency of 24 GHz.
- How many channels does the ADF5904 have?
The ADF5904 has 4 channels.
- What is the RF signal bandwidth of the ADF5904?
The RF signal bandwidth is 250 MHz.
- What is the Rx to IF isolation of the ADF5904?
The Rx to IF isolation is 30 dB.
- What is the output impedance of the receiver outputs?
The output impedance is 900 Ω differential.
- What is the package type of the ADF5904?
The ADF5904 comes in a 32-lead, 5 mm × 5 mm LFCSP package.
- Is the ADF5904 qualified for automotive applications?
Yes, the ADF5904 is qualified for automotive applications.
- What is the ESD performance of the ADF5904 according to the Human Body Model (HBM)?
The ESD performance according to HBM is 2000 V.
- How is the control of on-chip registers achieved in the ADF5904?
The control of on-chip registers is achieved through a simple 3-wire interface.
- Does the ADF5904 include a temperature sensor?
Yes, the ADF5904 includes a temperature sensor with an analog output.
