Analog Devices Inc. AD9517-4ABCPZ-RL7

Overview

AD9517-4ABCPZ-RL7 from Analog Devices is a 12-output clock generator with integrated 1.45–1.80 GHz VCO, delivering subpicosecond jitter performance. It provides four 1.6 GHz LVPECL outputs (in two pairs), four 800 MHz LVDS outputs (in two pairs), each reconfigurable as dual 250 MHz CMOS outputs, and supports automatic output synchronization for high-speed data converter clocking in telecom and instrumentation systems.

For engineers reviewing the AD9517-4ABCPZ-RL7 datasheet, AD9517-4ABCPZ-RL7 pinout, AD9517-4ABCPZ-RL7 application, or AD9517-4ABCPZ-RL7 equivalent, key selection criteria include additive jitter (225 fs rms LVPECL / 275 fs rms LVDS), channel-to-channel skew (<10 ps paired LVPECL), programmable coarse/fine delay per output, and industrial temperature range (−40°C to +85°C) operation.

Technical Context

The AD9517-4ABCPZ-RL7 integrates a low-phase-noise PLL with an on-chip VCO tunable from 1.45 GHz to 1.80 GHz and supports optional external VCO/VCXO up to 2.4 GHz. Its reference input accepts LVPECL, LVDS, or CMOS signals up to 250 MHz with automatic switchover and holdover modes.

Each of the two LVPECL output pairs shares a 1-to-32 divider with coarse phase delay; each LVDS pair uses two cascaded 1-to-32 dividers supporting up to 1024 total division. Fine delay adjust (Δt) is available on all four LVDS outputs, and all outputs synchronize automatically at power-up.

Key Specifications

Pinout & Package

AD9517-4ABCPZ-RL7 is housed in a 48-lead LFCSP (7 mm × 7 mm, 0.5 mm pitch) with exposed paddle for thermal management. Pin functions are defined per Analog Devices' Rev. E datasheet, including dual reference inputs (REF1/REF2 or REFIN/REFIN), serial control port (SDIO/SCLK/SDO), LVPECL outputs (OUT0–OUT3), LVDS/CMOS outputs (OUT4–OUT7), and supply pins (VS, VS_LVPECL, VCP, BYPASS).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar clock generation applications.

Compared with AD9517-4ABCPZ-RL7, AD9516-4BCPZ-REEL7 reduces output count while retaining identical jitter and phase noise performance, whereas AD9523-1BCPZ-REEL7 trades maximum output frequency for embedded crystal support and nonvolatile configuration - making AD9517-4ABCPZ-RL7 optimal for high-frequency, externally referenced, multi-output clock distribution.

Availability

AD9517-4ABCPZ-RL7 is available at Aetrix Electronics and suitable for 100G networking line cards, high-speed data acquisition systems, and wireless infrastructure baseband units requiring stable component supply and guaranteed long-term availability.

Supply support for AD9517-4ABCPZ-RL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.

The AD9517 family targets ultra-low-jitter clock distribution in demanding RF and data converter applications, with the AD9517-4ABCPZ-RL7 variant optimized for maximum LVPECL output frequency (1.6 GHz) and dual-mode reference flexibility.

FAQ

What is the maximum operating frequency of the LVPECL outputs on the AD9517-4ABCPZ-RL7?

The AD9517-4ABCPZ-RL7 supports LVPECL outputs up to 1.6 GHz in standard operation. This is confirmed in the datasheet's Clock Outputs table (Page 6), where OUT0–OUT3 are specified for 1.6 GHz maximum frequency in clock distribution mode (VCO divider bypassed). Operation beyond this requires external VCO and careful layout to maintain jitter integrity.

Does the AD9517-4ABCPZ-RL7 support automatic synchronization of all outputs at power-up?

Yes, the AD9517-4ABCPZ-RL7 features automatic synchronization of all 12 outputs on power-up, as stated in the General Description (Page 1). This ensures deterministic phase relationships without requiring external reset sequencing or firmware initialization - critical for systems demanding immediate timing validity after cold start.

Can the LVDS outputs of the AD9517-4ABCPZ-RL7 be reconfigured as CMOS outputs?

Yes, each of the four LVDS outputs (OUT4–OUT7) on the AD9517-4ABCPZ-RL7 can be individually reconfigured as two 250 MHz CMOS outputs, yielding up to eight additional single-ended clocks. This is explicitly documented in the General Description (Page 1) and Clock Outputs section (Page 6), enabling flexible clock routing to mixed-logic-level systems.

What is the additive output jitter specification for the LVDS outputs of the AD9517-4ABCPZ-RL7?

The AD9517-4ABCPZ-RL7 specifies 275 fs rms additive output jitter for its LVDS outputs, measured under distribution-only conditions (VCO divider not used). This value is listed in the FEATURES section (Page 1) and verified in Table 6 (Page 9) of the Rev. E datasheet, reflecting jitter contribution solely from the distribution path.

What package type and dimensions does the AD9517-4ABCPZ-RL7 use?

The AD9517-4ABCPZ-RL7 is packaged in a 48-lead LFCSP (Lead Frame Chip Scale Package) measuring 7 mm × 7 mm with 0.5 mm pitch and an exposed thermal paddle. This is confirmed in the General Description (Page 1) and Outline Dimensions section (Page 79) of the Rev. E datasheet, and supports efficient thermal dissipation in high-power clocking applications.