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PDF MAX3747A Data sheet ( Hoja de datos )
| Número de pieza | MAX3747A | |
| Descripción | 155Mbps to 3.2Gbps / Low-Power SFP Limiting Amplifiers | |
| Fabricantes | Maxim Integrated | |
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19-3297; Rev 0; 5/04
155Mbps to 3.2Gbps, Low-Power SFP
Limiting Amplifiers
General Description
The MAX3747/MAX3747A multirate limiting amplifiers
function as data quantizers for OC-3 through OC-48 syn-
chronous optical network (SONET), Fibre-Channel, and
Gigabit Ethernet optical receivers. They are pin-for-pin
compatible with the SY88993V from Micrel
Semiconductor, Inc. The amplifiers accept a wide range
of input voltages and provide constant-level, current-
mode logic (CML) output voltages with controlled edge
speeds. The MAX3747 output voltage level is 500mVp-p
and the MAX3747A output voltage is 800mVp-p.
The MAX3747/MAX3747A limiting amplifiers feature a
programmable loss-of-signal detect (LOS) and an
optional disable function (DISABLE). Output disable can
be used to implement squelch.
The MAX3747/MAX3747A are available in a 3mm, 10-pin
µMAX® package ideal for small form-factor receivers.
Applications
Gigabit Ethernet SFP/SFF Optical Transceiver
Modules
1G/2G Fibre-Channel SFP/SFF Optical
Transceiver Modules
Multirate OC-3 to OC-48 FEC SFP/SFF Optical
Transceiver Modules
10G LX4 Transceiver Modules
Features
♦ Pin Compatible with Micrel SY88993V
♦ 155Mbps to 3.2Gbps Operation
♦ >57dB of Gain for the MAX3747 and MAX3747A
♦ <10-12 BER with 2mVP-P Input Amplitude
♦ 18mA Supply Current
♦ Chatter-Free LOS with Programmable Threshold
♦ Output DISABLE Function
♦ PECL-Compatible Inputs
Ordering Information
PART
TEMP RANGE PIN-
PACKAGE
PKG
CODE
MAX3747EUB -40°C to +85°C 10 µMAX
MAX3747AEUB -40°C to +85°C 10 µMAX
U10C-4
U10C-4
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Pin Configuration appears at end of data sheet.
Typical Application Circuit
3-INPUT
DIAGNOSTIC
MONITOR
DS1859
VCC
MAX4004
MAX3745
5-PIN TO-HEADER
SFP OPTICAL RECEIVER
SUPPLY FILTER
0.1µF
0.1µF
MAX3747
IN+ MAX3747A
IN-
VCC
0.1µF
OUT+
0.1µF
OUT-
50Ω 50Ω
VREF TH
GND LOS DISABLE
R1
HOST BOARD
HOST FILTER
VCC_RX
50Ω
SERDES
50Ω
4.7kΩ TO 10kΩ
VCC_HOST
LOS
0.1µF
R2
0.1µF
R1 + R2 ≥ 5kΩ
VCC
________________________________________________________________ Maxim Integrated Products 1
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.
1 page  
155Mbps to 3.2Gbps, Low-Power SFP
Limiting Amplifiers
Typical Operating Characteristics (continued)
(VCC = +3.3V, TA = +25°C, unless otherwise noted.)
OUTPUT EYE DIAGRAM
(MINIMUM INPUT)
MAX3747/MAX3747A toc03
2.7Gbps, 223 - 1 PRBS, 4mVP-P
OUTPUT EYE DIAGRAM
(MAXIMUM INPUT)
MAX3747/MAX3747A toc04
2.7Gbps, 223 - 1 PRBS, 1200mVP-P
OUTPUT EYE DIAGRAM AT +100°C
MAX3747/MAX3747A toc05
2.125Gbps, CJTPAT, 50mVP-P
60mV/div
60mV/div
60mV/div
70ps/div
70ps/div
80ps/div
SUPPLY CURRENT vs. TEMPERATURE
(EXCLUDES OUTPUT CURRENT)
50
45
40
35
30
25
20
15
10
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
TEMPERATURE (°C)
TRANSFER FUNCTION
(OUTPUT VOLTAGE vs. INPUT VOLTAGE)
1000
900
800
MAX3747A
700
600
500
MAX3747
400
300
200
100
0
012345
DIFFERENTIAL INPUT (mVP-P)
RANDOM JITTER vs. TEMPERATURE
3.0
VIN = 50mVP-P, FREQ = 2.7Gbps
2.7
2.4
2.1
1.8
1.5
1.2
0.9
0.6
0.3
0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80
TEMPERATURE (°C)
RANDOM JITTER vs. INPUT AMPLITUDE
5
3.2Gbps
4
3
2
1
0
1 10 100 1000 10,000
DIFFERENTIAL INPUT AMPLITUDE (mVP-P)
BIT-ERROR RATIO vs. INPUT VOLTAGE
13,000
12,000
11,000
10,000
9000
8000
7000
6000
5000
4000
3000
2000
1000
1
0
MAXIM
MAX3747
MICREL
SY88993V
1 2 3 4 5 6 7 8 9 10
DIFFERENTIAL INPUT AMPLITUDE (mVP-P)
_______________________________________________________________________________________ 5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet MAX3747A.PDF ] | |
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