MAX3945ETE+T by Analog Devices

1.0625Gbps to 11.3Gbps, SFP+ Dual-Path Limiting Amplifier


The MAX3945 is a +3.3V, multirate, low-power limiting amplifier optimized for Fibre Channel and Ethernet transmission systems at data rates up to 11.3Gbps. The high-sensitivity limiting amplifier limits the signal generated by a transimpedance amplifier into a CML-level differential output signal. All differential inputs and outputs (I/O) are optimally back terminated for 50Ω transmission line PCB design. The MAX3945's dual-path limiting amplifier has programmable filtering to optimize sensitivity for different data rates and to suppress relaxation oscillations that could occur in some optical systems. The MAX3945 incorporates two loss-of-signal (LOS) circuits and a programmable time mask for the LOS output. A 3-wire digital interface reduces the pin count and enables control of LOS threshold, LOS polarity, LOS mode, CML output level, input offset correction, receive (Rx) polarity, Rx input filter, and Rx deemphasis without the need for external components. The MAX3945 is packaged in a 3mm x 3mm, 16-pin TQFN package.

Where to Buy

Prices starting from US$4.09

Distributor Stock
Logo for Farnell
Farnell
from US$4.09
2,099
in stock
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Logo for element14
element14
from US$6.02
2,099
in stock
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Logo for Newark Electronics
Newark Electronics
-
-
Buy Now

Features

130mW Power Dissipation Enables < 1W SFP+ Modules
Enables Single-Module Design Compliance with 1000BASE-SX/LX and 10GBASE-SR/LR Specifications
-25.3dBm Optical Sensitivity at 1.25Gbps Using a 10.32Gbps ROSA
Selectable 1GHz/2.1GHz/2.5GHz/3GHz Input Filters at RATE_SEL = 0 Setting
Supports SFF-8431 SFP+ MSA and SFF-8472 Digital Diagnostic
Total Power Dissipation of 130mW at 3.3V Power Supply with RSSI Monitor-Based LOS
Total Power Dissipation of 154mW at 3.3V Power Supply with Rx Input-Based LOS
4mVP-P Input Sensitivity at 11.3Gbps
4psP-P DJ at 11.3Gbps with RATE_SEL = 1
4psP-P DJ at 8.5Gbps with RATE_SEL = 1
5psP-P DJ at 4.25Gbps with RATE_SEL = 0, BW1 = 1, BW0 = 1
9.0psP-P DJ at 1.25Gbps with RATE_SEL = 0, BW1 = 0, BW0 = 0
26ps Rise and Fall Time with RATE_SEL = 1
52ps Rise and Fall Time with RATE_SEL = 0
CML Output with Level Adjustment and Squelch Mode
Programmable CML Output Deemphasis
CML Output Polarity Select
LOS Polarity Select
Programmable Masking Time for the LOS Output
LOS Assert/Deassert Level Adjustment
Choice of Rx Input-Based LOS or RSSI Monitor-Based LOS
3-Wire Digital Interface Compatible with Maxim’s SFP+ Family of Products

Specifications

Target Oper. Range (Gbps) 5 to >10
Data Rate (Mbps) (min) 1062
Data Rate (Mbps) (max) 11300
VSUPPLY (V) 3.3
ICC (mA) (typ) 39
I/O Type CML
Input Sens. (mV) 4
LOS Sens. (mV) (min) 5.1
Edge Speed (ps) (max) 35
Package/Pins TQFN/16
BudgetaryPrice (See Notes) 4.45


MAX3945ETE+T Semiconductors - ICs by Analog Devices

LIMITING AMP 2.85-3.63V TQFN-16

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Bandwidth 9GHz
Supply Voltage Min 2.85V
Supply Voltage Max 3.63V
Amplifier Case Style TQFN
No. of Pins 16Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

LIMITING AMPLIFIER, 9GHZ, -40 TO 85DEG C | element14
Limiting Amp, 2.85-3.63V, Tqfn-16 | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX3945ETE+T ?

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Is the MAX3945ETE+T RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX3945ETE+T have stock available?

Authorised distributors including element14, Farnell and Newark Electronics have stock available or on a lead time for MAX3945ETE+T .

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