Overview
The MAX2870ETJ+ from Analog Devices Inc./Maxim Integrated is an ultra-wideband phase-locked loop (PLL) with integrated voltage control oscillators (VCOs). This device is capable of operating in both integer-N and fractional-N modes, making it highly versatile for a wide range of frequency synthesis applications. It can synthesize frequencies from 23.5 MHz to 6 GHz, maintaining superior phase noise and spurious performance when combined with an external reference oscillator and loop filter. The MAX2870ETJ+ is particularly useful in applications requiring high-performance frequency generation over a broad frequency range.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Frequency Range | 23.5 MHz to 6 GHz | |
| Fundamental VCO Frequency Range | 3000 MHz to 6000 MHz | |
| Output Dividers | 1, 2, 4, 8, 16, 32, 64, 128 | |
| Phase Detector Frequency (Integer-N Mode) | 105 MHz | |
| Phase Detector Frequency (Fractional-N Mode) | 50 MHz | |
| Reference Frequency Range | 10 MHz to 200 MHz | |
| Supply Voltage Range | 3 V to 3.6 V | V |
| Operating Temperature Range | -40°C to +85°C | °C |
| Output Power Range | -4 dBm to +5 dBm | dBm |
| Package Type | 32-pin TQFN | |
| Control Interface | 4-wire serial interface (compatible with 1.8V control logic) |
Key Features
- Ultra-wideband phase-locked loop (PLL) with integrated voltage control oscillators (VCOs)
- Operates in both integer-N and fractional-N modes
- Manual or automatic VCO selection
- Output binary buffers/dividers for extended frequency range (1, 2, 4, 8, 16, 32, 64, 128)
- Dual differential output drivers with programmable output power (-4 dBm to +5 dBm)
- Output mute control via software or hardware
- Analog and digital lock detect indicators
- Hardware and software shutdown control
- High-performance phase detector frequency (105 MHz in integer-N mode, 50 MHz in fractional-N mode)
- Low phase noise and spurious performance
- Lead-free, RoHS-compliant package
Applications
- Test and measurement equipment
- Satellite communications
- Public safety radio (PMAR/LMAR)
- Wireless LANs/CATV
- Communications and networking
- Clock and timing systems
Q & A
- What is the frequency range of the MAX2870ETJ+?
The MAX2870ETJ+ can synthesize frequencies from 23.5 MHz to 6 GHz.
- What types of VCO modes does the MAX2870ETJ+ support?
The MAX2870ETJ+ supports both integer-N and fractional-N VCO modes.
- What is the fundamental VCO frequency range of the MAX2870ETJ+?
The fundamental VCO frequency range is from 3000 MHz to 6000 MHz.
- What are the available output dividers for the MAX2870ETJ+?
The available output dividers are 1, 2, 4, 8, 16, 32, 64, and 128.
- What is the phase detector frequency in integer-N and fractional-N modes?
In integer-N mode, the phase detector frequency is 105 MHz, and in fractional-N mode, it is 50 MHz.
- What is the reference frequency range for the MAX2870ETJ+?
The reference frequency range is from 10 MHz to 200 MHz.
- What is the supply voltage range for the MAX2870ETJ+?
The supply voltage range is from 3 V to 3.6 V.
- What is the operating temperature range of the MAX2870ETJ+?
The operating temperature range is from -40°C to +85°C.
- How is the output power of the MAX2870ETJ+ controlled?
The output power can be independently programmed to deliver -4 dBm to +5 dBm, and both outputs can be muted by either software or hardware control.
- What type of package does the MAX2870ETJ+ come in?
The MAX2870ETJ+ comes in a 32-pin TQFN package.
