Overview
The AD8346ARU-REEL7, produced by Analog Devices Inc., is a silicon RFIC (Radio Frequency Integrated Circuit) I/Q (In-phase and Quadrature) modulator. This device is designed for operation in the frequency range of 0.8 GHz to 2.5 GHz, making it suitable for various wireless communication systems. The AD8346 is optimized for high performance direct modulation to RF, featuring excellent phase accuracy and amplitude balance. It is fabricated on Analog Devices' high-performance silicon process and operates over a temperature range of -40°C to +85°C with a supply voltage range of 2.7 V to 5.5 V.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Frequency Range | 0.8 GHz to 2.5 GHz | |
| Supply Voltage | 2.7 V to 5.5 V | |
| Operating Temperature | -40°C to +85°C | |
| LO Frequency | Up to 1900 MHz | LO level = -10 dBm |
| LO Drive Level | -6 dBm to -12 dBm | Differential LO drive recommended |
| Baseband Input Impedance | 12 kΩ | |
| Output Load Impedance | 50 Ω | |
| LO Feedthrough | < -42 dBm | With proper offset voltages |
Key Features
- High phase accuracy and amplitude balance for high-performance direct modulation to RF.
- Differential LO input with a polyphase network phase splitter for accurate phase quadrature.
- Buffer amplifiers to improve signal-to-noise ratio.
- Gilbert-cell mixers for efficient modulation.
- Differential V-to-I converters for baseband modulation signals.
- Output amplifier designed to drive a 50 Ω load.
- Low power consumption, optimized for lower power applications.
- Support for dc-coupled current output DAC interface for minimal error contribution.
Applications
- Wireless communication systems, including cellular networks and wireless local area networks (WLANs).
- RF and microwave systems requiring high-performance I/Q modulation.
- Direct conversion transmitters and transceivers.
- Base station and mobile device RF front-ends.
- Other RF applications where precise phase and amplitude control are necessary.
Q & A
- What is the frequency range of the AD8346ARU-REEL7? The AD8346ARU-REEL7 operates in the frequency range of 0.8 GHz to 2.5 GHz.
- What is the supply voltage range for the AD8346ARU-REEL7? The supply voltage range is 2.7 V to 5.5 V.
- What is the operating temperature range for the AD8346ARU-REEL7? The operating temperature range is -40°C to +85°C.
- What is the recommended LO drive level for the AD8346ARU-REEL7? The recommended LO drive level is between -6 dBm and -12 dBm.
- How can LO feedthrough be minimized in the AD8346ARU-REEL7? LO feedthrough can be minimized by applying small offset voltages and using proper dc-coupled current output DAC interfaces.
- What type of output amplifier does the AD8346ARU-REEL7 have? The output amplifier is designed to drive a 50 Ω load.
- What are the key applications of the AD8346ARU-REEL7? Key applications include wireless communication systems, RF and microwave systems, direct conversion transmitters and transceivers, and base station and mobile device RF front-ends.
- How does the AD8346ARU-REEL7 achieve accurate phase quadrature? The AD8346ARU-REEL7 uses a polyphase network phase splitter to achieve accurate phase quadrature.
- What is the input impedance of the baseband inputs? The input impedance of the baseband inputs is 12 kΩ.
- Is additional matching circuitry required for the LO port? No, additional matching circuitry is not required to drive the LO port from a 50 Ω source.
