The ADF4158 is a 6.1 GHz, fractional-N frequency synthesizer with modulation and waveform generation capability. It contains a 25-bit fixed modulus, allowing subhertz resolution at 6.1 GHz. It consists of a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider. There is a sigma-delta (?-?) based fractional interpolator to allow programmable fractional-N division. The INT and FRAC registers define an overall N-divider as N = INT + (FRAC/225).The ADF4158 can be used to implement frequency shift keying (FSK) and phase shift keying (PSK) modulation. There are also a number of frequency sweep modes available, which generate various waveforms in the frequency domain, for example, sawtooth and triangular waveforms. Sweeps can be set to run automatically, or each step manually triggered by an external pulse. The ADF4158 features cycle slip reduction circuitry, which leads to faster lock times, without the need for modifications to the loop filter.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.Applications Frequency modulated continuous wave (FMCW) radar Communications test equipment

Real Time Clock

Delay Lines/Timing Elements

Real Time Clock RTC w/Constant V Trickle Charger

Real Time Clock

Real Time Clock

Clock Drivers & Distribution LVPECL/LVECL/HSTL Clock & Data Driver

Real Time Clock

Continuous Rate 10 Mb/s to 675 Mb/s Clock and Data Recovery IC with Integrated Limiting Amp Features: Serial data input: 10 Mb/s to 675 Mb/s Exceeds SONET requirements for jitter transfer/generation/tolerance Quantizer sensitivity: 3.3 mV typical Adjustable slice level: ±95 mV Patented clock recovery architecture Loss-of-signal (LOS) detect range: 2.3 mV to 19 mV Independent slice level adjust and LOS detector No reference clock required Loss-of-lock indicator I2C™ interface to access optional features Single-supply operation: 3.3 V Low power: 435 mW typical 5 mm × 5 mm, 32-lead LFCSP, Pb free

Clock Buffer 1:2 Fanout w/+3.3V IP Pin Out