ADF4154 Fractional-N Frequency Synthesizer
The ADF4154 is a fractional-N frequency synthesizer that implements local oscillators in the up conversion and down conversion sections of wireless receivers and transmitters. It consists of a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider. There is a Σ-Δ based fractional interpolator to allow programmable fractional-N division. The INT, FRAC, and MOD registers
define an overall N divider (N = (INT + (FRAC/MOD))). In addition, the 4-bit reference counter (R counter) allows selectable REFIN frequencies at the PFD input. A complete phase-locked loop (PLL) can be implemented if the synthesizer is used with an external loop filter and a voltage controlled oscillator (VCO).
A key feature of the ADF4154 is the fast-lock mode with a builtin
timer. The user can program a predetermined count-down time value so that the PLL will remain in wide bandwidth mode, instead of having to control this time externally.
Control of all on-chip registers is via a simple 3-wire interface. 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.
Features and BenefitsRF bandwidth 500 MHz to 4 GHz2.7 V to 3.3 V power supplySeparate VP allows extended tuning voltageProgrammable dual-modulus prescaler 4/5, 8/9Programmable charge pump currents3-wire serial interfaceAnalog and digital lock detectPower-down modePin compatible with the ADF4110/ADF4111/ADF4112/ADF4113/ADF4106 and ADF4153Programmable modulus on fractional-N synthesizerTrade-off noise versus spurious performanceFast-lock mode with built-in timer | Software & Systems Requirements |
Data Sheets
Application Notes
User Guides
Frequently Asked Questions
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| ADF4154BCPZ Production | 20 ld LFCSP 4x4mm (2.1EP) | OTH 490 | -40 to 85C | 2.68 | 2.28 | Y |
| ADF4154BCPZ-RL Obsolete | 20 ld LFCSP 4x4mm (2.1EP) | REEL 5000 | | 0 | 0 | Y |
| ADF4154BCPZ-RL7 Production | 20 ld LFCSP 4x4mm (2.1EP) | REEL 1500 | -40 to 85C | 0 | 2.28 | Y |
| ADF4154BRU Obsolete | 16 ld TSSOP | OTH 96 | | 0 | 0 | N |
| ADF4154BRU-REEL Obsolete | 16 ld TSSOP | REEL 2500 | | 0 | 0 | N |
| ADF4154BRU-REEL7 Obsolete | 16 ld TSSOP | REEL 1000 | | 0 | 0 | N |
| ADF4154BRUZ Production | 16 ld TSSOP | OTH 96 | -40 to 85C | 2.68 | 2.28 | Y |
| ADF4154BRUZ-RL Production | 16 ld TSSOP | REEL 2500 | -40 to 85C | 0 | 2.28 | Y |
| ADF4154BRUZ-RL7 Production | 16 ld TSSOP | REEL 1000 | -40 to 85C | 0 | 2.28 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EV-ADF411XSD1Z | Evaluation Board (part samples also required) | 121.44 | Y |
| EVAL-SDP-CS1Z | SDP-S Controller Board - Interface to EV-ADF411XSD1Z (also required) | 49 | Y |
Reference Materials
