ADI Limiting Amplifier Chips for SFP and SFP+ Optical Modules

ADI (including former Maxim) limiting amplifier chips for the optical receiver side Covers 155 Mbps to 14 Gbps SFP, SFP+, SFF, GBIC and OC-48 optical module applications All models listed below are combined into this single product for easy sourcing Samples, volume orders, alternatives and cross reference are supported

Product Specifications

The limiting amplifiers below sit on the receive side of an optical module. They take the small differential signal from a TIA or ROSA and deliver a constant level CML or PECL output, so the following CDR or SerDes sees a clean, quantized data eye. All models are grouped into this single product, so you can send us the models and quantities you need in one enquiry.

Model	Brand	Data Rate	Module Type	Function
ADN2890	ADI	up to 3.2 Gbps	SFP / SFF / GBIC	3.2 Gbps limiting amplifier, 3 mV p-p sensitivity, CML output, RSSI and programmable LOS
ADN2891	ADI	up to 3.2 Gbps	SFP	3.2 Gbps limiting amplifier, 4 mV p-p sensitivity, 700 mV p-p CML output, RSSI and LOS, 16-lead LFCSP
ADN2892	ADI	up to 4.25 Gbps	SFP+ / 4G Fibre Channel	4.25 Gbps limiting amplifier with LOS detection and RSSI, 16-lead LFCSP
MAX3264	ADI (formerly Maxim)	1.25 Gbps	GBIC / SFP	Low power CML limiting amplifier, 55 dB gain, LOS and squelch, 16-pin TSSOP
MAX3265	ADI (formerly Maxim)	2.5 Gbps	SFP	Low power CML limiting amplifier, 49 dB gain, LOS and squelch, 16-pin TSSOP
MAX3747	ADI (formerly Maxim)	155 Mbps to 3.2 Gbps	SFP / SFF	Multirate data quantizer, 500 mV p-p CML output, programmable LOS and disable
MAX3747A	ADI (formerly Maxim)	155 Mbps to 3.2 Gbps	SFP / SFF	Multirate data quantizer, 800 mV p-p CML output, pin compatible with MAX3747
MAX3748	ADI (formerly Maxim)	155 Mbps to 4.25 Gbps	SFP+	Compact multirate limiting amplifier for SONET, Fibre Channel and Gigabit Ethernet receivers
MAX3272	ADI (formerly Maxim)	2.5 Gbps	SFP / OC-48	Low power 3.3 V limiting amplifier, 20-pin TQFN
MAX3272A	ADI (formerly Maxim)	2.5 Gbps	SFP / OC-48	Low power 3.3 V limiting amplifier, improved overload performance, 20-pin TQFN
MAX3799	ADI (formerly Maxim)	1 Gbps to 14 Gbps	SFP+ / 16G Fibre Channel	Multirate limiting amplifier with VCSEL driver and 3-wire digital interface, 5 mm x 5 mm 32-pin TQFN

Product Details

Applications

Receiver side of 155 Mbps to 14 Gbps optical modules: SFP, SFP+, SFF, GBIC and 10GBASE-LX4 transceivers, 4G and 16G Fibre Channel links, Gigabit Ethernet, SONET/SDH OC-3 to OC-48 and OC-48 with FEC line cards, GPON, BPON and EPON OLT and ONU ports, WDM transponders, and industrial or long distance optical links that need a clean quantized signal before the CDR.

Features

Programmable loss of signal (LOS) detection with hysteresis, RSSI and average received power monitoring that supports SFF-8472 DDM, adjustable input slice level and threshold to offset ASE noise in DWDM systems, output squelch or disable for safe module behaviour, selectable 500 mV p-p or 800 mV p-p CML output swing, PECL compatible inputs, and multirate operation from 155 Mbps up to 4.25 Gbps, with the MAX3799 covering 1 Gbps to 14 Gbps in one device.

Companion Chips

A complete optical module chip set also needs the front end, the retiming stage and the control block. We supply the TIA (ADN2880, ADN2882, ADN2820, MAX3266, MAX3267, MAX3760), CDR (ADN2812, ADN2814, ADN2817, ADN2818, MAX3872, MAX3876, MAX3877), laser driver (ADN2525, ADN2530, ADN2870, MAX3668, MAX3945), TEC controller (ADN8830, ADN8834, MAX8520, MAX8521) and optical module controller (ADuC7020, ADuC7021, DS4830, DS4834) families, so one BOM can be quoted in one go.

Related Families

This page is part of the ADI optical module chip set we supply: ADI laser driver chips for optical modules, ADI TIA chips for optical receivers, ADI clock and data recovery (CDR) chips for optical modules. Browse the full Analog & Mixed-Signal ICs and Amplifiers & Comparators categories for related models.

Why Source ADI Limiting Amplifier Chips from Superb Automation?

Professional Supplier: Superb Automation is a professional electronic components supplier with years of experience in optical module chips.
Competitive Pricing: We offer competitive prices for both small and large quantities.
Global Sourcing: Strong global supply chain to help you find hard-to-find and obsolete parts.
Fast Delivery: Stock items ship quickly; backorder lead times are clearly communicated.
Quality Assurance: All parts are original and new unless otherwise specified.
BOM Kitting: One-stop BOM service to save your time and cost.
Technical Support: We can assist with alternative models and cross-reference.
Flexible MOQ: Sample orders and mass production orders are both welcome.

Frequently Asked Questions

Q: What models are included in this product?

A: ADN2890, ADN2891, ADN2892, MAX3264, MAX3265, MAX3747, MAX3747A, MAX3748, MAX3272, MAX3272A, MAX3799, and more. Please contact us for the full list.

Q: Which data rates and module types do you cover?

A: From 155 Mbps legacy SFF and GBIC receivers up to 4.25 Gbps SFP+ and 14 Gbps SFP+ and Fibre Channel modules. Multirate parts such as MAX3747A and MAX3748 cover the whole low speed and high speed range with one device.

Q: Can you supply obsolete and hard-to-find types?

A: Yes. Several parts in this family are no longer recommended for new designs, for example MAX3272A and ADN2892. We source them from verified stock and our global channel, so please send the target price and quantity with your enquiry.

Q: Do you provide samples, alternatives and volume quantities?

A: Yes. Sample orders and mass production orders are both welcome, and we can suggest pin compatible or functionally equivalent alternatives when a type is short.