The AD9520-5 is a low phase noise, phase-locked loop (PLL) that supports external 3.3 V/5 V VCO/VCXO to 2.4 GHz, 1 differential or 2 single-ended reference inputs, accepts CMOS, LVDS or LVPECL references to 250 MHz, accepts 16.67 MHz to 33.3 MHz crystal for reference input, optional reference clock doubler, reference monitoring capability, automatic and manual reference switchover/holdover modes, with selectable revertive/nonrevertive switching, glitch-free switchover between references, automatic recovery from holdover, digital or analog lock detect, selectable zero delay operation, 12 1.6 GHz LVPECL outputs divided into 4 groups, each group of 3 has a 1 to 32 divider with phase delay, additive output jitter as low as 225 fs rms, channel-to-channel skew grouped outputs <16 ps, each LVPECL output can be configured as differential or single-ended, and the output frequency and phase offset can be selected.
The AD9520-5 is a multi‑output clock generator offering twelve LVPECL outputs arranged in four groups, each configurable with a 1‑to‑32 divider and phase delay. It supports external VCO/VCXO up to 2.4 GHz, provides low‑jitter performance (as low as 225 fs rms), and includes both digital and analog lock‑detect options.
The device operates from a single 3.3 V supply (VS 3.135‑3.465 V) with optional driver supplies (VS_DRV 2.375‑5.25 V). It accepts a variety of reference inputs (CMOS, LVDS, LVPECL) up to 250 MHz and crystal references from 16.67 MHz to 33.33 MHz. The AD9520-5 is specified for –40 °C to +85 °C operation and includes EEPROM for configuration storage.
| Number of LVPECL outputs | 12 |
|---|---|
| LVPECL output groups | 4 groups, each with 1‑to‑32 divider |
| Maximum LVPECL output frequency | 2400 MHz |
| Additive output jitter | 225 fs rms |
| Channel‑to‑channel skew (grouped outputs) | <16 ps |
| Supply voltage (VS) | 3.135 V – 3.465 V |
| Driver supply voltage (VS_DRV) | 2.375 V – 5.25 V |
| Operating temperature range | –40 °C to +85 °C |
| Reference input types | CMOS, LVDS, LVPECL up to 250 MHz |
| Crystal reference frequency range | 16.67 MHz – 33.33 MHz |
The LVPECL outputs can reach up to 2400 MHz.
The device is specified for operation from –40 °C to +85 °C.
It provides twelve LVPECL outputs, organized into four groups.