Overview
The ADF4169CCPZ-RL7, produced by Analog Devices Inc., is a 13.5 GHz fractional-N frequency synthesizer designed with advanced modulation and waveform generation capabilities. This device is particularly suited for applications requiring high-frequency precision and flexibility, such as FMCW radars and communications infrastructure. It features a 25-bit fixed modulus, allowing for subhertz frequency resolution, and includes a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider. The ADF4169 also supports various modulation schemes, including frequency shift keying (FSK) and phase shift keying (PSK), as well as sawtooth and triangular waveform generation.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Analog Power Supply (AVDD) | 2.7 | 3.45 | V | ||
| Digital Power Supply (DVDD, SDVDD) | 1.8 | 2 | V | ||
| Input Voltage High (VINH) | 1.17 | V | |||
| Input Voltage Low (VINL) | 0.4 | V | |||
| Input Current (IINH/IINL) | ±1 | μA | |||
| Input Capacitance (CIN) | 10 | pF | |||
| Output Voltage High (VOH) | DVDD - 0.4 | V | CMOS output selected | ||
| Output Voltage Low (VOL) | 0.3 | V | IOL = 500 μA | ||
| Supply Current (AIDD) | 26 | 40 | mA | fPFD = 130 MHz | |
| Supply Current (DIDD) | 7.5 | 12 | mA | fPFD = 130 MHz | |
| Supply Current (IP) | 5.5 | 7 | mA | fPFD = 130 MHz | |
| Power-Down Current | 2 | μA |
Key Features
- 13.5 GHz fractional-N frequency synthesizer with modulation capabilities.
- Supports fast and slow waveform generation, including sawtooth and triangular waveforms.
- 25-bit fixed modulus for subhertz frequency resolution.
- Low noise digital phase frequency detector (PFD), precision charge pump, and programmable reference divider.
- Programmable phase control and cycle slip reduction (CSR) circuitry for faster lock times.
- 3-wire serial interface for control of all on-chip registers.
- Digital lock detect and interrupt functions.
- Qualified for automotive applications and ESD performance: 3000 V HBM, 1000 V CDM).
Applications
- FMCW radars.
- Communications test equipment).
- Communications infrastructure).
Q & A
- What is the maximum frequency range of the ADF4169?
The ADF4169 operates up to 13.5 GHz).
- What type of modulation does the ADF4169 support?
The ADF4169 supports frequency shift keying (FSK) and phase shift keying (PSK) modulation).
- What is the resolution of the frequency synthesizer?
The device has a 25-bit fixed modulus, allowing for subhertz frequency resolution).
- What are the power supply requirements for the ADF4169?
The analog power supply range is 2.7 V to 3.45 V, and the digital power supply range is 1.8 V to 2 V).
- How is the device controlled?
The device is controlled via a simple 3-wire serial interface).
- What are some of the key features of the ADF4169?
Key features include low noise PFD, precision charge pump, programmable reference divider, and cycle slip reduction (CSR) circuitry).
- Is the ADF4169 qualified for automotive applications?
- What is the ESD performance of the ADF4169?
The device has an ESD performance of 3000 V HBM and 1000 V CDM).
- Can the ADF4169 generate various waveforms?
- How does the power-down mode work?
The device can be powered down when not in use, drawing only 2 μA of current).
