Overview
The AD8349AREZ-RL7, produced by Analog Devices Inc., is a silicon, monolithic, RF quadrature modulator designed for operation in the frequency range of 700 MHz to 2700 MHz. This device is optimized for high-performance direct RF modulation in various communication systems. It features excellent phase accuracy and amplitude balance, making it suitable for applications such as cellular/PCS communication systems, WCDMA/CDMA2000/PCS/GSM/EDGE, wireless LAN, wireless local loop, and broadband wireless access systems like LMDS.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Frequency Range | 700 MHz to 2700 MHz | |
| Modulation Bandwidth | dc to 160 MHz | |
| 1 dB Output Compression | 5.6 dBm @ 2140 MHz | |
| Noise Floor | -156 dBm/Hz | |
| Phase Quadrature Error | 0.3 degrees @ 2140 MHz | |
| Amplitude Balance | 0.1 dB | |
| Supply Voltage | 4.75 V to 5.5 V | |
| Package Type | 16-lead, exposed-paddle TSSOP | |
| Output Enable Time | Turn-on: 20 ns, Turn-off: 50 ns |
Key Features
- High dynamic range and modulation accuracy.
- Differential LO input signal buffered and split into in-phase (I) and quadrature-phase (Q) signals using a polyphase phase splitter.
- Two Gilbert cell mixers for mixing LO signals with baseband signals.
- Output amplifier designed to drive 50 Ω loads.
- Output enable function to switch RF output on and off within 50 ns.
- Single supply operation from 4.75 V to 5.5 V.
- Pin compatible with AD8345/AD8346.
Applications
- Cellular/PCS communication systems infrastructure.
- WCDMA/CDMA2000/PCS/GSM/EDGE systems.
- Wireless LAN and wireless local loop systems.
- Broadband wireless access systems like LMDS.
- QPSK or QAM broadband wireless access transmitters.
Q & A
- What is the frequency range of the AD8349AREZ-RL7?
The AD8349AREZ-RL7 operates in the frequency range of 700 MHz to 2700 MHz.
- What is the modulation bandwidth of the AD8349AREZ-RL7?
The modulation bandwidth is from dc to 160 MHz.
- What is the 1 dB output compression point of the AD8349AREZ-RL7?
The 1 dB output compression point is 5.6 dBm at 2140 MHz.
- How does the output enable function work on the AD8349AREZ-RL7?
The RF output can be switched on and off within 50 ns by applying a control pulse to the ENOP pin.
- What is the supply voltage range for the AD8349AREZ-RL7?
The supply voltage range is from 4.75 V to 5.5 V.
- What type of package does the AD8349AREZ-RL7 come in?
The device is available in a 16-lead, exposed-paddle TSSOP package.
- What are the key applications of the AD8349AREZ-RL7?
Key applications include cellular/PCS communication systems, WCDMA/CDMA2000/PCS/GSM/EDGE, wireless LAN, and broadband wireless access systems like LMDS.
- How accurate is the phase quadrature error of the AD8349AREZ-RL7?
The phase quadrature error is 0.3 degrees at 2140 MHz.
- What is the amplitude balance of the AD8349AREZ-RL7?
The amplitude balance is 0.1 dB.
- Is the AD8349AREZ-RL7 pin compatible with other models?
Yes, it is pin compatible with AD8345/AD8346.
