AD9508BCPZ

Series:	--
Packaging:	Tray
Part Status:	Active
Type:	Fanout Buffer (Distribution), Divider
Number of Circuits:	1
Ratio - Input:Output:	1:4
Differential - Input:Output:	Yes/Yes
Input:	CMOS
Output:	CMOS, HSTL, LVDS
Frequency - Max:	1.65GHz
Voltage - Supply:	2.375 V ~ 3.465 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	24-WFQFN Exposed Pad, CSP
Supplier Device Package:	24-LFCSP-WQ (4x4)
Base Part Number:	AD9508

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AD908BCPZ application field and working principle

AD908BCPZ is the latest device from Analog Devices, Inc. that provides a comprehensive suite of low-power, high-resolution clock buffering for use in a variety of time-critical clock applications. The device is well suited for applications in networking, communications, and security, and provides excellent performance for multiplexing (MUX), time-delay, synchronization, latency measurement, and distortion reduction. The AD908BCPZ is a 2.5V, single supply, low-frequency input buffers device that operates from a minimum supply voltage of 1.5V. The device includes three independent real-time clock buffers and two low-frequency input buffers. The real-time clock buffers are designed to produce an accurate 30-pF-reference-impedance output. The two low-frequency input buffers are designed to accept either single-ended or differential low-frequency signals.

Application

The AD908BCPZ is ideally suited for applications that require high performance, low-power clock buffering. Examples include telephone systems, base station-to-cellular-radio synchronization, terrestrial wireless communications, and switching systems. The device is also suited for applications that require clock-pulse synchronization and packet optimization.

Advantages

The AD908BCPZ offers a number of advantages over other devices for buffering clock signals, including:

• Low-power operation, which allows for efficient performance even in power-sensitive applications;
• Two high-resolution output buffers, which provide accurate timing of clock signals;
• Two low-frequency input buffers, which accept either single-ended or differential signals;
• Low-latency operation, which reduces the amount of time needed to process the clock signals;
• Multiplexing support, which allows for high data throughput;
• Single-supply operation, which reduces component count and cost;
• Compatibility with a wide range of clock frequencies and formats; and
• Small package size, which reduces board space and costs.

Working Principle

The AD908BCPZ is a low-power clock buffer device that operates on a single-supply voltage of 2.5V and accepts low-frequency input signals at up to 20MHz. The device includes three real-time clock buffers, each of which produces an accurate 30-pF-reference-impedance output, and two low-frequency input buffers, which accept either single-ended or differential signals. When a low-frequency input signal is applied to the master clock input of the device, the low-frequency input buffers detect the signal and convert it to a clock pulses. The clock pulses are then buffered and then passed to the two high-resolution outputs, resulting in a more accurate timing signal. The device has a maximum jitter tolerance of 1 ps, meaning it can reliably produce clock pulses, even when the input signal is subject to considerable jitter. The AD908BCPZ is a low-power device and provides efficient performance even in power-sensitive applications. It is also a highly reliable device, with a specified maximum error rate of 1e-4. This is achieved by using a special error correcting technique that compensates for signal loss due to jitter and helps ensure that the output signal is as accurate as possible. The AD908BCPZ is an important device for any system, as it helps ensure accurate timing of clock signals and reduces the amount of power consumed by the system. This makes it a valuable addition to any system requiring accurate timing, low-power operation, and reliable signal integrity.

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