MAX3645EEE Maxim Integrated Products, MAX3645EEE Datasheet

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MAX3645EEE

Manufacturer Part Number
MAX3645EEE
Description
Limiting Amplifiers 2.97-5.5V 125-200Mbps
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX3645EEE

Operating Supply Voltage
3.3 V, 5 V
Supply Current
18 mA
Operating Temperature Range
+ 85 C
Package / Case
QSOP-16
Mounting Style
SMD/SMT
Number Of Channels
1
Power Dissipation
540 mW

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The MAX3645 limiting amplifier functions as a data
quantizer and is pin compatible with the Mindspeed
MC2045-2 and MC2045-2Y postamplifiers. The amplifi-
er accepts a wide range of input voltages and provides
constant-level positive emitter-coupled logic (PECL)
output voltages with controlled edge speeds.
The MAX3645 features an integrated power detector
with complementary PECL loss-of-signal (LOS) outputs
that indicate when the input power level drops below a
programmable threshold. An optional squelch function
holds the data outputs at static levels during a
LOS condition.
The MAX3645 operates from a single +3.3V or +5.0V
power supply over a -40°C to +85°C temperature
range. It is available in 16-pin SO and 16-pin QSOP
packages.
19-3026; Rev 0; 10/03
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.
+2.97V to +5.5V, 125Mbps to 200Mbps Limiting
SONET 155Mbps Transceivers
Fast Ethernet Receivers
FDDI 125Mbps Receivers
FTTx Receivers
ESCON Receivers
________________________________________________________________ Maxim Integrated Products
General Description
*FUTURE PRODUCT
Amplifier with Loss-of-Signal Detector
PIN K
IN
MAX3644*
V
V
GND
CC
CC
Applications
OUT+
OUT-
0.1µF
0.1µF
C
1nF
DIN+
DIN-
SD
GNDA
CSD V
V
TH
CCA
CC
R
100Ω
MAX3645
TH
o Pin Compatible with the Mindspeed
o 500µV Input Sensitivity (BER = 10
o Compatible with 4B/5B Data Coding
o Programmable LOS Threshold
o Stable LOS Threshold Over Supply Range
o Output Disable Function and Automatic Squelch
o Single +3.3V or +5.0V Power Supply
o 18mA Supply Current
MAX3645ESE
MAX3645EEE
CAZ1
MC2045-2/MC2045-2Y
0.1µF
C
V
AZ
CC
LOS
CAZ2
PART
- 2V
50Ω
TOP VIEW
GNDE
V
V
CCE
CC
DOUT+
DOUT-
N.C.
LOS
Typical Application Circuit
GNDA
CAZ2
CAZ1
DIN+
V
DIN-
CSD
CCA
DIS
50Ω
1
2
3
4
5
6
7
8
-40°C to +85°C
-40°C to +85°C
Ordering Information
TEMP RANGE
V
CC
SO/QSOP
MAX3645
- 2V
50Ω
Pin Configuration
50Ω
16
15
14
13
12
11
10
9
TH
N.C.
V
DOUT+
DOUT-
GNDE
LOS
LOS
-12
CCE
PIN-PACKAGE
16 SO
16 QSOP
)
Features
1

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MAX3645EEE Summary of contents

Page 1

... Input Sensitivity (BER = 10 o Compatible with 4B/5B Data Coding o Programmable LOS Threshold o Stable LOS Threshold Over Supply Range o Output Disable Function and Automatic Squelch o Single +3.3V or +5.0V Power Supply o 18mA Supply Current PART MAX3645ESE MAX3645EEE Applications 0.1µ 1nF ...

Page 2

Limiting Amplifier with Loss-of-Signal Detector ABSOLUTE MAXIMUM RATINGS Power-Supply Voltage ( ....................-0.5V to +7.0V CCA CCE Voltage at CAZ1, CAZ2, DIN+, DIN-, CSD, DIS, TH ................................-0. PECL Output Current ...

Page 3

Limiting Amplifier with Loss-of-Signal Detector ELECTRICAL CHARACTERISTICS (continued +2.97V to +5.5V, PECL outputs are terminated with 50Ω +85°C. Typical values are +3.3V PARAMETER SYM ...

Page 4

Limiting Amplifier with Loss-of-Signal Detector (V = 3.3V, PECL outputs terminated with 50Ω SUPPLY CURRENT vs. TEMPERATURE (EXCLUDES PECL OUTPUT CURRENTS 5. ...

Page 5

Limiting Amplifier with Loss-of-Signal Detector (V = 3.3V, PECL outputs terminated with 50Ω LOSS-OF-SIGNAL WITH SQUELCH (155Mbps OUT LOS 10µs/div _______________________________________________________________________________________ Typical Operating Characteristics (continued) - 2V, ...

Page 6

Limiting Amplifier with Loss-of-Signal Detector MINDSPEED MAXIM MC2045-2 PIN MAX3645 MC2045-2Y PIN NAME PIN NAME Offset-Correction-Loop Capacitor Connection. A capacitor connected between this pin and 1 CAZ- CAZ2 CAZ1 sets the time constant of ...

Page 7

Limiting Amplifier with Loss-of-Signal Detector TH CSD POWER DETECTOR DIN+ DIN- OFFSET CORRECTION C INT CAZ1 CAZ2 Figure 2. Functional Diagram The external autozero capacitor (C internal capacitance (C ), determines the time con- ...

Page 8

Limiting Amplifier with Loss-of-Signal Detector V CC Figure 4. Equivalent PECL Output Circuit 8 _______________________________________________________________________________________ TRANSISTOR COUNT: 1026 PROCESS: Silicon bipolar DOUT+/LOS DOUT+/LOS ESD STRUCTURES Chip Information ...

Page 9

Limiting Amplifier with Loss-of-Signal Detector (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages TOP VIEW D B ...

Page 10

... 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. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2003 Maxim Integrated Products ...

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