MAX2981GCB/V+

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MAX2981GCB/V+ is a versatile trans-impedance amplifier for fiber optic receiver applications. With its unique architecture, it provides excellent statistical performance and temperature stability over a 0.5 to 2.5V dynamic range. This multi-purpose product offers the highest threshold accuracy, low-noise, and ultra-low jitter performance for a wide variety of applications, including 10/100/1000-Mb/s Ethernet, InfiniBand, Fibre Channel, and Serial Attached SCSI (SAS) link implementations.

The MAX2981GCB/V+ is a low-power, fully-differential trans-impedance amplifier with an integrated temperature-stable, adjustable precision threshold voltage. Unlike other trans-impedance amplifiers, the MAX2981GCB/V+ incorporates an active current-mode sensing that maximizes the trans-impedance accuracy, significantly improves the noise and jitter performance, and makes the circuit insensitive to components variance.

The MAX2981GCB/V+ is housed in a 28-pin TSSOP or 24-pin QFN package and is designed to operate over a wide temperature range of -40C to +85C. It is offered in an adjustable or no-trim version with an adjustable threshold voltage range of 0.5 to 2.5V and a typical value of 1.2V.

The trans-impedance amplifier translates an optical signal into a current proportional to the received optical power level. The integrated current mode sensing circuit determines the bias current, which sets the gain of the transimpedance amplifier, and also sets the precision threshold voltage. The temperature-stable, adjustable threshold makes the MAX2981GCB/V+ ideal for applications that require a reliable performance over a wide temperature range. In addition, the low-noise, low-jitter performance makes the MAX2981GCB/V+ ideal for high-speed data links with data rates of up to 10 Gb/s.

The MAX2981GCB/V+ is suitable for a wide variety of high-speed optical transceiver applications, such as 10/100/1000Mbps Ethernet, InfiniBand, Fibre Channel, and Serial Attached SCSI (SAS) link implementations. It is also suitable for data communication systems requiring excellent optical performance, such as gigabit interface converter (GBIC) modules, SFP transceivers, and XFP transceivers.

The MAX2981GCB/V+ is designed with a fully differential architecture, which provides excellent signal integrity. Its integrated logic level detection circuit takes advantage of the wide dynamic range of the MAX2981GCB/V+ in order to drive a logic signal in order to detect the presence of an optical signal. The ability to sense different rising and falling thresholds, to detect short optical pulses, and to reject ambient light makes the MAX2981GCB/V+ the ideal choice for optical receiver applications.

The device\'s low power consumption and small form factor makes it suitable for applications that require low power and board space, such as telecom and datacom systems. The MAX2981GCB/V+ is also offered with a ±20mA power supply for applications that require higher output current drive.

In summary, the MAX2981GCB/V+ is an ideal device for high dynamic range trans-impedance amplifiers. With its integrated current-mode sensing circuit, low-noise, low-jitter performance, and its temperature-stable adjustable precision threshold voltage, the MAX2981GCB/V+ is a great choice for telecom and datacom applications requiring excellent signal integrity and wide dynamic range.

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