Overview
The ADF4156BCPZ-RL is a 6.2 GHz fractional-N frequency synthesizer produced by Analog Devices Inc. This device is designed to implement local oscillators in the up-conversion and down-conversion sections of wireless receivers and transmitters. It features a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider. The synthesizer includes a Σ-Δ based fractional interpolator, allowing for programmable fractional-N division, which is defined by the INT, FRAC, and MOD registers. The device operates with a power supply ranging from 2.7 V to 3.3 V and can be powered down when not in use, making it energy-efficient. Control of all on-chip registers is via a simple 3-wire interface.
Key Specifications
| Parameter | Description |
|---|---|
| Frequency Range | Up to 6.2 GHz |
| Power Supply | 2.7 V to 3.3 V |
| Package Type | 20-lead LFCSP |
| Interface | 3-wire serial interface |
| Phase Frequency Detector | Low noise digital PFD |
| Charge Pump | Precision charge pump |
| Fractional Interpolator | Σ-Δ based fractional interpolator |
| Registers | INT, FRAC, MOD, and R counters |
| Power Down Mode | Yes |
Key Features
- Programmable RF output phase to allow for specific phase relationships between the output and the reference.
- Cycle slip reduction circuitry for faster lock times without the need for modifications to the loop filter.
- Low noise digital phase frequency detector (PFD) and precision charge pump.
- Σ-Δ based fractional interpolator for programmable fractional-N division.
- Programmable reference divider and RF R-counter.
- 3-wire serial interface for control of all on-chip registers.
- Power supply range of 2.7 V to 3.3 V and power down capability when not in use.
Applications
- CATV equipment
- Base stations for mobile radio (WiMAX, GSM, PCS, DCS, SuperCell 3G, CDMA, WCDMA)
- Wireless handsets (GSM, PCS, DCS, CDMA, WCDMA)
- Wireless LANs and PMR Communications
- Communications test equipment
Q & A
- What is the maximum frequency range of the ADF4156BCPZ-RL?
The ADF4156BCPZ-RL operates up to a frequency of 6.2 GHz.
- What is the power supply range for the ADF4156BCPZ-RL?
The device operates with a power supply ranging from 2.7 V to 3.3 V.
- What type of interface does the ADF4156BCPZ-RL use?
The device uses a 3-wire serial interface for control of all on-chip registers.
- Does the ADF4156BCPZ-RL have a power down mode?
Yes, the device can be powered down when not in use.
- What is the purpose of the Σ-Δ based fractional interpolator in the ADF4156BCPZ-RL?
The Σ-Δ based fractional interpolator allows for programmable fractional-N division).
- What are some of the key applications of the ADF4156BCPZ-RL?
The device is used in CATV equipment, base stations for mobile radio, wireless handsets, wireless LANs, PMR Communications, and communications test equipment).
- How does the cycle slip reduction circuitry benefit the ADF4156BCPZ-RL?
The cycle slip reduction circuitry leads to faster lock times without the need for modifications to the loop filter).
- What is the package type of the ADF4156BCPZ-RL?
The device is packaged in a 20-lead LFCSP).
- Does the ADF4156BCPZ-RL support programmable RF output phase?
Yes, the device supports programmable RF output phase to allow for specific phase relationships between the output and the reference).
- What components make up the ADF4156BCPZ-RL's digital section?
The digital section includes a 5-bit RF R-counter, a 12-bit RF N-counter, a 12-bit FRAC counter, and a 12-bit modulus counter).
