Real Time Clock

Real Time Clock

The AD9517-11?provides a multi-output clock distribution function with subpicosecond jitter performance, along with an on-chip PLL and VCO. The on-chip VCO tunes from 2.30 GHz to 2.65 GHz. Optionally, an external VCO/VCXO of up to 2.4 GHz can be used.The AD9517-1 emphasizes low jitter and phase noise to maximize data converter performance, and it can benefit other applications with demanding phase noise and jitter requirements.The AD9517-1 features four LVPECL outputs (in two pairs) and four LVDS outputs (in two pairs). Each LVDS output can be reconfigured as two CMOS outputs. The LVPECL outputs operate to 1.6 GHz, the LVDS outputs operate to 800 MHz, and the CMOS outputs operate to 250 MHz.For applications that require additional outputs, a crystal reference input, zero-delay, or EEPROM for automatic configuration at startup, the AD9520 and AD9522 are available. In addition, the AD9516 and AD9518 are similar to the AD9517 but have a different combination of outputs.Each pair of outputs has dividers that allow both the divide ratio and coarse delay (or phase) to be set. The range of division for the LVPECL outputs is 1 to 32. The LVDS/CMOS outputs allow a range of divisions up to a maximum of 1024.The AD9517-1 is available in a 48-lead LFCSP and can be operated from a single 3.3 V supply. An external VCO, which requires an extended voltage range, can be accommodated by connecting the charge pump supply (VCP) to 5 V. A separate LVPECL power supply can be from 2.5 V to 3.3 V (nominal).The AD9517-1 is specified for operation over the industrial range of ?40?C to +85?C.Applications Low jitter, low phase noise clock distribution 10/40/100 Gb/sec networking line cards, including SONET, Synchronous Ethernet, OTU2/3/4 Forward error correction (G.710) Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs High performance wireless transceivers ATE and high performance instrumentation 1AD9517 is used throughout the data sheet to refer to all the members of the AD9517 family. However, when AD9517-1 is used, it is refers to that specific member of the AD9517 family.

1kHz to 33MHz Resistor Set SOT-23 Oscillator Features: One External Resistor Sets the Frequency Fast Start-Up Time: <1ms 1kHz to 33MHz Frequency Range Frequency Error ≤1.5% 5kHz to 20MHz (TA = 25°C) Frequency Error ≤2% 5kHz to 20MHz (TA = 0°C to 70°C) ±40ppm/°C Temperature Stability 0.05%/V Supply Stability 50% ±1% Duty Cycle 1kHz to 2MHz 50% ±5% Duty Cycle 2MHz to 20MHz 1mA Typical Supply Current 100Ω CMOS Output Driver Operates from a Single 2.7V to 5.5V Supply Low Profile (1mm) SOT-23 (ThinSOT™ Package) AEC-Q100 Qualified for Automotive Applications

Ultralow Jitter, 7.5GHz, 11 Output Fanout Buffer Family Features: LTC6955: 11 Output Buffer LTC6955-1: 10 Buffered Outputs and One ÷2 Output Additive Output Jitter ~45fs RMS (ADC SNR Method) Additive Output Jitter < 5fs RMS (Integration BW = 12kHz to 20MHz, f = 7.5GHz) Eleven Ultralow Noise CML Outputs Parallel Control for Multiple Output Configurations –40°C to 125°C Operating Junction TemperatureRange

Broadband Analog Time Delay SMT, DC - 24 GHz Features: Very Wide Bandwidth: DC - 24 GHz Continuous Adjustable Delay Range: 70 ps Single-Ended or Differential Operation Adjustable Differential Output Voltage Swing: 170 - 760 mVp-p @ 24 GHz Delay Control Modulation Bandwidth: 10 MHz Single Supply: +3.3V  24 Lead 4x4mm SMT Package: 16mm²

Microwave Wideband Synthesizer with Integrated VCO Features: RF output frequency range: 62.5 MHz to 32,000 MHz Fractional-N synthesizer and Integer N synthesizer High resolution 39-bit fractional modulus Typical spurious PFD: −90 dBc Integrated rms jitter: 38 fs (1 kHz to 100 MHz) Normalized phase noise floor: −234 dBc/Hz PFD operation to 250 MHz Reference frequency operation to 600 MHz Programmable divide by 1, 2, 4, 8, 16, 32, or 64 output 62.5 MHz to 8,000 MHz output at RF8x and RFAUX8x 8,000 MHz to 16,000 MHz output at RF16x 16,000 MHz to 32,000 MHz output at RF32x Lock time approximately 3 ms with automatic calibration Lock time <30 μs with autocalibration bypassed Analog and digital power supplies: 3.3 V VCO power supply: 3.3 V and 5 V RF output mute function 7mm × 7mm, 48-terminal LGA package

Broadband Analog Time Delay SMT, DC - 24 GHz Features: Very Wide Bandwidth: DC - 24 GHz Continuous Adjustable Delay Range: 70 ps Single-Ended or Differential Operation Adjustable Differential Output Voltage Swing: 170 - 760 mVp-p @ 24 GHz Delay Control Modulation Bandwidth: 10 MHz Single Supply: +3.3V  24 Lead 4x4mm SMT Package: 16mm²

MMIC VCO SMT w/ Buffer Amplifier, 3.35 - 3.55 GHz Features: Pout +4.7 dBm Phase Noise: -112 dBc/HZ @ 100 KHz No External Resonator Needed Single Supply: 3V @ 41 mA 50 Ohm Matched & DC Blocked RF I/Os OFN Leadless SMT Package, 16mm2

CLOCK & TIMING ANALOG DEV KITS;