MAX3992UTG+ Maxim Integrated Products, MAX3992UTG+ Datasheet

IC DATA RECOVERY W/EQ 24-TQFN

MAX3992UTG+

Manufacturer Part Number
MAX3992UTG+
Description
IC DATA RECOVERY W/EQ 24-TQFN
Manufacturer
Maxim Integrated Products
Type
Clock and Data Recovery (CDR)r
Datasheet

Specifications of MAX3992UTG+

Input
CML
Output
CML
Frequency - Max
693MHz
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
24-TQFN Exposed Pad
Frequency-max
693MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3992 is a 10Gbps clock and data recovery
(CDR) with equalizer IC for XFP optical transmitters. The
MAX3992 and the MAX3991 (CDR with limiting amplifier)
form a signal conditioner chipset for use in XFP trans-
ceiver modules. The chipset is XFI compliant and offers
multirate operation for data rates from 9.95Gbps to
11.1Gbps.
The MAX3992 recovers the data for up to 12 inches of
FR-4 and one connector without the need for a stand-
alone equalizer. The phase-locked loop is optimized for
jitter tolerance in SONET, Ethernet, and Fibre-Channel
applications. Low jitter generation of 4mUI
adequate margin for meeting SONET jitter requirements
at the optical output.
An AC-based power detector asserts the loss-of-signal
(LOS) output when the input signal is removed. An exter-
nal reference clock, with frequency equal to 1/64 or 1/16
of the serial data rate, is used to aid in frequency acqui-
sition. A loss-of-lock (LOL) indicator is provided to indi-
cate the lock status of the receiver PLL.
The MAX3992 is available in a 4mm x 4mm, 24-pin QFN
package. It consumes 356mW from a single +3.3V sup-
ply and operates over a 0°C to +85°C temperature range.
19-3496; Rev 2; 11/06
Typical Application Circuit appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
9.95Gbps to 11.1Gbps Optical XFP Modules
SONET OC-192/SDH STM-64 XFP Transceivers
10.3Gbps/11.1Gbps Ethernet XFP Transceivers
10.5Gbps Fibre-Channel XFP Transceivers
10Gbps DWDM Transceivers
10Gbps XFP Copper Modules
High-Speed Backplane Interconnects
________________________________________________________________ Maxim Integrated Products
General Description
10Gbps Clock and Data Recovery
Applications
RMS
leaves
♦ Multirate Operation from 9.95Gbps to 11.1Gbps
♦ Span Up to 300mm (12in) FR4 with One Connector
♦ Low-Output Jitter Generation: 4mUI
♦ Low-Output Deterministic Jitter: 4.6ps
♦ XFI-Compliant Input Interface
♦ LOS Indicator
♦ LOL Indicator
♦ Power Dissipation: 356mW
*Future product—contact factory for availability.
+Denotes lead-free package.
MAX3992UTG
MAX3992UTG+*
*THE EXPOSED PAD MUST BE CONNECTED TO CIRCUIT-BOARD GROUND FOR
TOP VIEW
PROPER THERMAL AND ELECTRICAL PERFORMANCE.
PART
GND
SDI+
GND
SDI-
V
V
CC
CC
1
2
3
4
5
6
24
7
TEMP RANGE
0°C to +85°C
0°C to +85°C
4mm x 4mm QFN*
with Equalizer
23
8
Ordering Information
MAX3992
22
9
Pin Configuration
10
21
11
20
PIN-
PACKAGE
24 QFN
24 QFN
12
19
RMS
Features
18
17
16
15
14
13
P-P
V
GND
SDO-
SDO+
GND
V
CC
CC
T2444-4
T2444-4
CODE
PKG
1

Related parts for MAX3992UTG+

MAX3992UTG+ Summary of contents

Page 1

... LOS Indicator ♦ LOL Indicator ♦ Power Dissipation: 356mW leaves RMS PART MAX3992UTG MAX3992UTG+* *Future product—contact factory for availability. +Denotes lead-free package. Applications TOP VIEW *THE EXPOSED PAD MUST BE CONNECTED TO CIRCUIT-BOARD GROUND FOR PROPER THERMAL AND ELECTRICAL PERFORMANCE. with Equalizer ...

Page 2

Clock and Data Recovery with Equalizer ABSOLUTE MAXIMUM RATINGS Supply Voltage, V ..............................................-0.5V to +4.0V CC Input Voltage Levels (SDI+, SDI-, REFCLK+, REFCLK-) ....................................(V CC CML Output Voltage (SDO+, SDO-, SCLKO+, SLCKO-) ......................................(V CC Stresses beyond those listed under ...

Page 3

ELECTRICAL CHARACTERISTICS (continued) (See Table 1 for operating conditions. Typical values at V PARAMETER SYM JITTER SPECIFICATION Jitter Peaking Jitter Transfer Bandwidth Sinusoidal Jitter Tolerance Jitter Generation Serial-Data Output Deterministic Jitter PLL ACQUISITION/LOCK SPECIFICATION Acquisition Time LOL ...

Page 4

Clock and Data Recovery with Equalizer ELECTRICAL CHARACTERISTICS (continued) (See Table 1 for operating conditions. Typical values at V Note 1: Measured with 100mV differential amplitude. P-P Note 2: Guaranteed by design and characterization. Note 3: Measured from the ...

Page 5

AND ACQUISITION TIME ARE DEFINED WITH A VALID REFERENCE CLOCK APPLIED. Figure 1. TX LOL Assert and PLL Acquisition Time DATA INPUT POWER LOS ASSERT TIME LOS LOL Figure 2. LOS Assert/Deassert Time _______________________________________________________________________________________ 10Gbps Clock ...

Page 6

Clock and Data Recovery with Equalizer (V = 3.3V +25°C, unless otherwise noted MAX3992 INPUT (15in FR-4) MAX3992 toc01 500 50 -50 -500 1 0 0.35 0.65 NORMALIZED BIT TIME (UI) POWER-SUPPLY INDUCED OUTPUT JITTER ...

Page 7

T = +25°C, unless otherwise noted COMMON MODE S11 SCC11 0 XFI MASK -5 -10 -15 -20 -25 -30 -35 -40 10M 100M 1G FREQUENCY (Hz) PIN NAME 1, 6, 11, 13 +3.3V ...

Page 8

Clock and Data Recovery with Equalizer PIN NAME Negative Reference Clock Input, Digital. The REFCLK inputs are designed to be AC-coupled to the 22 REFCLK- reference clock source. REFCLK± have a 200Ω differential impedance. See the Detailed Description section ...

Page 9

Loss-of-Lock Monitor The LOL output indicates that the frequency difference between the recovered clock and the reference clock is excessive. LOL may assert due to excessive jitter at the data input, incorrect frequency, or loss of input data. The LOL ...

Page 10

Clock and Data Recovery with Equalizer V CC 50Ω 50Ω SDI+ SDI- Figure 5. CML Input Model VCC 50Ω 50Ω GND Figure 6. CML Output Model 10 ______________________________________________________________________________________ Applications Information The exposed pad, 24-pin QFN incorporates features that provide ...

Page 11

Clock and Data Recovery 0.047µF TOSA SDO+ MAX3975 MAX3992 DRIVER SDO- DS1862* CONTROLLER 2 SDI+ ROSA MAX3991 SDI- 0.047µF ______________________________________________________________________________________ with Equalizer Typical Application Circuit V CC SDI+ SDI- REFCLK+ REFCLK- GND 2 2-WIRE INTERFACE N.C. REFCLK+ REFCLK- SDO+ ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products (The package drawing(s) in this data sheet may not reflect the most current specifications ...

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