ADAR4002 - 0.5-19GHz Bidirectional TDU | Analog Devices
MPN： ADAR4002 ✓ 啟用中ADAR4002 概覽
A true time delay unit (TDU) is a component that introduces a controlled delay to an RF signal, independent of frequency, which is essential for phased array beamforming and time-domain applications. Unlike phase shifters that only adjust phase, a TDU preserves signal integrity across wide bandwidths, making it critical for wideband systems. The ADAR4002 combines TDU and DSA functions, reducing component count and simplifying system design.
Key features include a wide operating frequency range of 0.5 GHz to 19 GHz, bidirectional operation, and low power consumption. The device supports both SPI and shift register control, with on-chip memory for 32 TDU and DSA states. The integrated sequencers allow fast bidirectional memory advance via the UPDATE pin, enabling rapid state changes. The 50 Ω matched ports simplify system integration, and the compact 14-lead WFDFN package supports space-constrained designs.
Technically, the ADAR4002 uses a combination of switched delay lines and attenuator stages to achieve precise time delay and attenuation. The bidirectional design allows signal flow in either direction, making it versatile for T/R modules. The SPI interface enables daisy chaining of multiple devices, and the shift register mode provides a simple parallel control option. The device operates over a wide temperature range, ensuring reliability in demanding environments.
Typical applications include phased array radar, electronic warfare, 5G beamforming, and test and measurement equipment. The wideband operation and bidirectional capability make it ideal for T/R modules in defense and communication systems. The low power consumption is beneficial for portable and battery-operated systems.
When designing with the ADAR4002, ensure proper RF layout and decoupling to maintain performance. The exposed pad should be soldered to a ground plane for thermal and electrical performance. The control interface should be configured according to system requirements, and the memory states should be programmed to achieve the desired delay and attenuation values.
直接替換替代品，適用於 ADAR4002 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
ADAR4002ACPZ-CSL
✅ 直接替換📋 參考替代品（不在目錄中）
ADAR4002 規格（製造商公布）
| Frequency Range | 0.5 GHz to 19 GHz |
| Type | True Time Delay Unit (TDU) with Digital Step Attenuator (DSA) |
| 通道數 | 1 |
| Bidirectional | Yes |
| Impedance | 50 Ω |
| Control Interface | SPI or Shift Register |
| Memory States | 32 TDU and DSA states |
| 封裝 | 14-WFDFN Exposed Pad, CSP |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant (per Analog Devices) |
ADAR4002 腳位配置
| 腳位 1 | RF1 — RF port 1 |
| 腳位 2 | GND — Ground |
| 腳位 3 | RF2 — RF port 2 |
| 腳位 4 | VDD — Power supply |
| 腳位 5 | SCLK — SPI clock |
| 腳位 6 | SDI — SPI data input |
| 腳位 7 | SDO — SPI data output |
| 腳位 8 | CS — Chip select |
| 腳位 9 | UPDATE — Update pin for memory advance |
| 腳位 10 | GND — Ground |
| 腳位 11 | GND — Ground |
| 腳位 12 | GND — Ground |
| 腳位 13 | GND — Ground |
| 腳位 14 | GND — Ground |
典型應用
ADAR4002 適用於 6 應用s: Phased Array Radar, Electronic Warfare, 5G Beamforming, Test and Measurement, Satellite Communication, Radar Test Systems.
Phased Array Radar
The ADAR4002 provides true time delay for beam steering in phased array radar systems. Its wideband operation (0.5-19 GHz) and bidirectional capability make it ideal for T/R modules. The low power consumption is beneficial for large arrays. The SPI interface allows precise control of delay and attenuation for each element.
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Electronic Warfare
In electronic warfare, the ADAR4002 is used for signal delay and attenuation to simulate or counter threats. Its wideband frequency range and fast state switching via the UPDATE pin enable rapid response. The bidirectional operation supports both receive and transmit paths, making it versatile for EW systems.
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5G Beamforming
The ADAR4002 is suitable for 5G beamforming, where true time delay is required to maintain signal integrity across wide bandwidths. Its 0.5-19 GHz range covers sub-6 GHz and mmWave bands. The compact package and low power consumption are ideal for small cell and massive MIMO systems.
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Test and Measurement
The ADAR4002 can be used in test equipment to introduce precise time delays and attenuation for calibration and characterization. Its SPI interface allows automated control, and the 50 Ω matched ports simplify integration into test setups. The wideband operation supports a variety of RF measurements.
推薦
Satellite Communication
In satellite communication, the ADAR4002 provides time delay and attenuation for beamforming and signal conditioning. Its wideband operation covers C, X, Ku, and Ka bands. The low power consumption is critical for space-constrained satellite payloads.
推薦
Radar Test Systems
The ADAR4002 is used in radar test systems to simulate target echoes with precise time delay and attenuation. Its bidirectional operation allows testing of both transmit and receive paths. The memory states enable pre-programmed scenarios for automated testing.
推薦
推薦產品摘要
工程參考資料，適用於 ADAR4002 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ADAR4002ACPZ-CSL | ADAR4001 |
|---|---|---|---|
| Package | 14-WFDFN Exposed Pad, CSP | 14-WFDFN Exposed Pad, CSP | Different package |
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Channels | 1 | 1 | 4 |
主要差異化特點
- Wideband operation up to 19 GHz (對比ADAR4001)
- Single-channel design (對比ADAR4001)
- Bidirectional operation (對比ADAR4001)
設計說明
Ensure proper RF layout with 50 Ω controlled impedance traces for RF1 and RF2 ports. Place decoupling capacitors close to the VDD pin and use a solid ground plane. The exposed pad should be soldered to the ground plane for thermal and electrical performance.
The ADAR4002 is a low power device, but ensure the supply voltage is within the recommended range. Use a low-noise LDO to power the device to avoid noise coupling into the RF path. Decouple the supply with 100 nF and 10 µF capacitors.
Avoid exceeding the maximum frequency range of 19 GHz. Ensure the control interface (SPI or shift register) is correctly configured to avoid unintended state changes. The UPDATE pin should be used carefully to advance memory states only when needed.
合規資訊
RoHS compliance per Analog Devices product page. Other compliance data not specified in provided data.
