ADF4158CCPZ

ADF4158 is a 6.1GHz, fractional-N frequency synthesizer with direct modulation and waveform generation capability. It contains a 25-bit fixed modulus, allowing subhertz resolution at 6.1GHz. 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 (Σ-Δ) based fractional interpolator to allow programmable fractional-N division. The INT and FRAC register define an overall N-divider as N=INT + (FRAC/2). This can be used to implement frequency shift keying (FSK) and phase shift keying (PSK) modulation. This is also a number of frequency sweep modes available that generate various waveforms in the frequency domain, for example, saw tooth and triangular waveforms. Application includes frequency-modulated continuous wave (FMCW) radar, and communications test equipment.

• RF input frequency range from 0.5 to 6.1GHz (-10dBm min to 0dBm max, -40 to +125°C, C version)
• Phase detector frequency is 32MHz (AVDD=DVDD=2.7 V to 3.3 V, -40 to +125°C, C version)
• Typical absolute accuracy is 2.5% (With RSET=5.1kohm, -40 to +125°C, C version)
• Typical low value is 312.5µA (with RSET=5.1kohm, -40 to +125°C, C version)
• Typical ICP vs. temperature is 2% (VCP=VP/2, -40 to +125°C, C version)
• Power supply range from 2.7 to 3.3V (AVDD=DVDD=2.7V to 3.3V, -40 to +125°C, C version)
• Typical normalized phase noise floor is -216dBc/Hz (measured at 100KHz offset, -40 to +125°C)
• Maximum IOH, output high current is 100µA (AVDD=DVDD=2.7V to 3.3V, -40 to +125°C, C version)
• 24-lead frame chip scale package [LFCSP]
• Temperature range from -40°C to +125°C

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