IC EQUALIZER DRVR 3.2GBPS 32TQFP

MAX3800UHJ

Manufacturer Part NumberMAX3800UHJ
DescriptionIC EQUALIZER DRVR 3.2GBPS 32TQFP
ManufacturerMaxim Integrated Products
TypeDriver
MAX3800UHJ datasheet
 


Specifications of MAX3800UHJ

Number Of Drivers/receivers1/0Voltage - Supply3.14 V ~ 3.46 V
Mounting TypeSurface MountPackage / Case32-TQFP Exposed Pad, 32-eTQFP, 32-HTQFP, 32-VQFP
Lead Free Status / RoHS StatusContains lead / RoHS non-compliantProtocol-
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19-1953; Rev 3; 12/05
General Description
The MAX3800 is a +3.3V adaptive cable equalizer and
cable driver implemented together on a single chip. It is
designed for coaxial and twin-axial cable point-to-point
communications applications. The driver features differ-
ential current-mode logic (CML) inputs and outputs as
well as adjustable output amplitude. The equalizer
includes differential CML data inputs and outputs, a
loss-of-signal (LOS) output, and a cable integrity moni-
tor (CIM) output.
The adaptive cable equalizer is capable of equalizing
differential or single-ended signals at data rates up to
3.2Gbps. It automatically adjusts to attenuation caused
by skin-effect losses of up to 30dB at 1.6GHz. The
equalizer effectively extends the usable length of cop-
per cable in high-frequency interconnect applications.
The MAX3800 is available in a 32-pin TQFP package
with exposed pad and consumes only 200mW at
+3.3V. The driver can be disconnected from the power
supply when it is not needed, resulting in a 40% reduc-
tion in supply current.
High-Speed Links in Communications
and Data Systems
Backplane and Interconnect Applications
SDH/SONET Transmission Equipment
Pin Configuration appears at end of data sheet.
+3.3V
DIN
DOUT
MAX3800
EOUT
LOS
RMOD
CIM
THIS SYMBOL INDICATES A CONTROLLED-IMPEDANCE TRANSMISSION LINE.
________________________________________________________________ Maxim Integrated Products
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.
3.2Gbps Adaptive Equalizer
♦ Single +3.3V Operation
♦ Typical Power Dissipation = 200mW at +3.3V
♦ Data Rates Up to 3.2Gbps
♦ Adjustable Cable Driver Output Amplitude
♦ Equalizer Automatically Adjusts for Different
Cable Lengths
♦ 0dB to 30dB Equalization at 1.6GHz (3.2Gbps)
♦ Loss-of-Signal (LOS) Indicator
♦ Cable Integrity Monitor (CIM)
♦ On-Chip Input and Output Terminations
♦ Low External Component Count
♦ Operating Temperature Range = 0°C to +85°C
♦ ESD Protection on Cable Inputs and Outputs
Applications
PART
MAX3800UGJ
MAX3800UHJ
MAX3800UHJ+
*EP = exposed pad
+Denotes lead-free package.
EIN
and Cable Driver
Features
Ordering Information
PIN-
TEMP
PACKAGE
RANGE
32 QFN
0°C to +85°C
G3255-1
32 TQFP-EP*
0°C to +85°C
32 TQFP-EP*
0°C to +85°C
Typical Application Circuit
+3.3V
EOUT
EIN
MAX3800
DOUT
DIN
LOS
RMOD
CIM
PKG
CODE
AA-EP
AA-EP
1

MAX3800UHJ Summary of contents

  • Page 1

    ... On-Chip Input and Output Terminations ♦ Low External Component Count ♦ Operating Temperature Range = 0°C to +85°C ♦ ESD Protection on Cable Inputs and Outputs Applications PART MAX3800UGJ MAX3800UHJ MAX3800UHJ+ *EP = exposed pad +Denotes lead-free package. EIN and Cable Driver Features Ordering Information PIN- ...

  • Page 2

    Adaptive Equalizer and Cable Driver ABSOLUTE MAXIMUM RATINGS Supply Voltage, V ..............................................-0.5V to +6.0V CC Voltage at LOS, RMOD, and CIM...............-0. Voltage at EIN+, EIN-, DIN+, DIN- .....(V CC Current Out of EOUT+, EOUT-, DOUT+, DOUT- ................25mA ...

  • Page 3

    AC ELECTRICAL CHARACTERISTICS (V = +3.14V to +3.46V 0°C to +85°C. Typical values are PARAMETER SYMBOL Maximum Input Data Rate CABLE DRIVER SPECIFICATIONS Random Jitter Deterministic Jitter Output Edge Speed Input Return Loss (Single-Ended) ...

  • Page 4

    Adaptive Equalizer and Cable Driver (T = +25° +3.3V, all jitter measurements done at 3.2Gbps, 700mV cable input with ones and 100 consecutive zeros substituted. Note: Test pattern produces near worst-case jitter results. Results ...

  • Page 5

    V = +3.3V, all jitter measurements done at 3.2Gbps, 700mV cable input with ones and 100 consecutive zeros substituted. Note: Test pattern produces near worst-case jitter results. Results will vary with pattern, unless otherwise ...

  • Page 6

    Adaptive Equalizer and Cable Driver PIN NAME 11 Equalizer Power Supply CCE 2, 7, 10, 15, GND Ground 23, 24, 26 EIN+ Positive Equalizer Input, CML 5 EIN- Negative Equalizer Input, CML ...

  • Page 7

    FLAT RESPONSE AMP |H(f)| CML EIN SKIN EFFECT P0WER DETECTOR COMPEN- SATION AMP LOS CML DOUT Figure 1. Functional Diagram V CC 50Ω 50Ω IN+ IN- ESD STRUCTURES GND Figure 2. CML Input Equivalent Circuit _______________________________________________________________________________________ 3.2Gbps Adaptive Equalizer ...

  • Page 8

    Adaptive Equalizer and Cable Driver CML, see Maxim application note HFAN-1.0, Interfacing Between CML, PECL, and LVDS. Flat Response and Skin-Effect Compensation Amplifiers The buffered input waveform is fed equally to two amplifiers—the flat response amplifier and the skin- ...

  • Page 9

    Single-Ended Operation For single-ended operation of the cable driver or equal- izer, connect the unused input to ground through a series combination of a capacitor (of equal value to other AC-coupling capacitors) and a 50Ω resistor. Note that the MAX3800 ...

  • Page 10

    Adaptive Equalizer and Cable Driver (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 10 ______________________________________________________________________________________ Package Information ...

  • Page 11

    For the latest package outline information go to www.maxim-ic.com/packages.) ______________________________________________________________________________________ 3.2Gbps Adaptive Equalizer and Cable Driver Package Information (continued) 11 ...

  • Page 12

    Adaptive Equalizer and Cable Driver (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 12 ______________________________________________________________________________________ Package Information (continued) PACKAGE OUTLINE, 32L TQFP, 5x5x1.0mm, EP ...

  • Page 13

    ... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2005 Maxim Integrated Products 3 ...