Series Information for AD9549ABCPZ - Analog Devices
Features
Flexible reference inputs
Input frequencies: 8 kHz to 750 MHz
Two reference inputs
Loss of reference indicators
Auto and manual holdover modes
Auto and manual switchover modes
Smooth A-to-B phase transition on outputs
Excellent stability in holdover mode
Programmable 16 + 1-bit input divider, R
Differential HSTL clock output
Output frequencies to 750 MHz
Low jitter clock doubler for frequencies of >400 MHz
Single-ended CMOS output for frequencies of <150 MHz
Programmable digital loop filter (<1 Hz to ~100 kHz)
High speed digitally controlled oscillator (DCO) core
Direct digital synthesizer (DDS) with integrated 14-bit DAC
Excellent dynamic performance
Programmable 16 + 1-bit feedback divider, S
Software controlled power-down
Available 64-lead LFCSP package
The AD9549 provides synchronization for many systems, including synchronous optical networks (SONET/SDH). The AD9549 generates an output clock, synchronized to one of two external input references. The external references may contain significant time jitter, also specified as phase noise. Using a digitally controlled loop and holdover circuitry, the AD9549 continues to generate a clean (low jitter), valid output clock during a loss of reference condition, even when both references have failed. The AD9549 operates over an industrial temperature range of −40°C to +85°C.
Specifications
Clock IC Type:
Clock Generator / Synchroniser
Frequency:
750MHz
No. of Outputs:
2Outputs
Supply Voltage Min:
3.135V
Supply Voltage Max:
3.465V
Clock IC Case Style:
LFCSP
No. of Pins:
64Pins
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
AD9549 Series
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 3 - 168 hours
SVHC:
No SVHC (07-Jul-2017)
Alternate Descriptions
Newark Electronics
CLOCK GENERATOR, 750MHZ, LFCSP-64; Clock IC Type:Clock Generator / Synchroniser; Frequency:750MHz; No. of Outputs:2Outputs; Supply Voltage Min:3.135V; Supply Voltage Max:3.465V; Clock IC Case Style:LFCSP; No. of Pins:64Pins RoHS Compliant: Yes
