MAX3747AEUB+ [MAXIM]

155Mbps to 3.2Gbps, Low-Power SFP Limiting Amplifiers;
MAX3747AEUB+
型号: MAX3747AEUB+
厂家: MAXIM INTEGRATED PRODUCTS    MAXIM INTEGRATED PRODUCTS
描述:

155Mbps to 3.2Gbps, Low-Power SFP Limiting Amplifiers

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EVALUATION KIT AVAILABLE  
MAX3747A/MAX3747B  
155Mbps to 3.2Gbps, Low-Power SFP  
Limiting Amplifiers  
General Description  
Features  
The MAX3747A/MAX3747B 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 MAX3747A/MAX3747B output voltages are  
o Pin Compatible with Micrel SY88993V  
o 155Mbps to 3.2Gbps Operation  
o > 57dB of Gain  
-
12  
o < 10  
BER with 2mV  
Input Amplitude  
P-P  
o 18mA Supply Current  
o Chatter-Free LOS with Programmable Threshold  
o Output DISABLE Function  
800mV . The MAX3747B has enhanced LOS operation  
P-P  
under overload conditions.  
o PECL-Compatible Inputs  
The MAX3747A/MAX3747B limiting amplifiers feature a  
programmable loss-of-signal detect (LOS) and an  
optional disable function (DISABLE) that can be com-  
bined to implement squelch.  
Ordering Information  
The MAX3747A/MAX3747B are available in a 3mm, 10-  
pin µMAX® package ideal for small form-  
factor receivers.  
PART  
MAX3747AEUB+  
MAX3747BEUB+  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
10 µMAX  
10 µMAX  
Applications  
Gigabit Ethernet SFP/SFF Optical Transceiver Modules  
1G/2G Fibre-Channel SFP/SFF Optical Transceiver  
Modules  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
µMAX is a registered trademark of Maxim Integrated Products, Inc.  
Multirate OC-3 to OC-48 FEC SFP/SFF Optical  
Transceiver Modules  
Pin Configuration appears at end of data sheet.  
10G LX4 Transceiver Modules  
Typical Application Circuit  
SFP OPTICAL RECEIVER  
HOST BOARD  
3-INPUT  
DIAGNOSTIC  
MONITOR  
SUPPLY FILTER  
HOST FILTER  
RX  
V
CC  
V
CC_  
DS1859  
MAX4004  
V
CC  
MAX3747A  
MAX3747B  
0.1µF  
0.1µF  
0.1µF  
0.1µF  
IN+  
IN-  
OUT+  
OUT-  
50Ω  
SERDES  
MAX3745  
50Ω  
5-PIN TO-HEADER  
V
TH  
GND LOS DISABLE  
REF  
50Ω  
50Ω  
4.7kTO 10kΩ  
V HOST  
CC_  
LOS  
R
R
TH1  
0.1µF  
0.1µF  
TH2  
R
TH1  
+ R 5kΩ  
TH2  
V
CC  
For pricing, delivery, and ordering information, please contact Maxim Direct  
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.  
19-0281; Rev 2; 8/12  
MAX3747A/MAX3747B  
155Mbps to 3.2Gbps, Low-Power SFP  
Limiting Amplifiers  
ABSOLUTE MAXIMUM RATINGS  
Power-Supply Voltage (V ).................................-0.5V to +4.5V  
Continuous Power Dissipation (T = +70°C)  
A
CC  
Voltage at IN+, IN- ..........................(V  
- 2.4V) to (V  
+ 0.5V)  
+ 0.5V)  
10-Pin µMAX (derate 6.9mW/°C above +70°C) ...........552mW  
CC  
CC  
CC  
Voltage at DISABLE, LOS, TH, V  
..........-0.5V to (V  
Operating Junction Temperature Range (T ) .......-55°C to +150°C  
REF  
J
Current into LOS ...................................................-1mA to +9mA  
Current into V ..................................................................2mA  
Storage Ambient Temperature Range (T )...........-55°C to +150°C  
S
Lead Temperature (soldering, 10s)......................................+300°C  
Soldering Temperature (reflow)............................................+260°C  
REF  
Differential Input Voltage (IN+ - IN-) .....................................2.5V  
Continuous Current at CML Outputs  
(OUT+, OUT-) ..............................................-25mA to +25mA  
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional  
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to  
absolute maximum rating conditions for extended periods may affect device reliability.  
ELECTRICAL CHARACTERISTICS  
CC  
unless otherwise specified.) (Note 1)  
(V  
= +2.97V to +3.63V, CML output load is 50to V , T = -40°C to +85°C. Typical values are at V  
= +3.3V and T = +25°C,  
CC A  
CC  
A
PARAMETER  
SYMBOL  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
POWER SUPPLY  
MAX3747A including the CML output current  
MAX3747B including the CML output current  
36  
38  
41  
43  
MAX3747A excluding the CML output  
current  
Supply Current (Note 2)  
I
mA  
dB  
CC  
18  
24  
26  
MAX3747B excluding the CML output  
current  
20  
30  
Power-Supply Noise Rejection  
INPUT SPECIFICATION  
Input Sensitivity  
PSNR  
f < 2MHz  
V
(Note 3)  
(Note 3)  
4
mV  
P-P  
IN-MIN  
Input Overload  
V
1200  
42  
mV  
P-P  
IN-MAX  
OUTPUT SPECIFICATION  
Output Resistance  
R
OUT  
(Note 4)  
50  
15  
58  
Differential Output Return Loss  
DUT is powered on, f < 3GHz  
dB  
MAX3747A/MAX3747B  
CML Differential Output Voltage  
600  
800  
1000  
mV  
mV  
P-P  
4mV  
V 1200mV  
IN P-P  
P-P  
Differential Output Signal When  
Disabled  
AC-coupled outputs, V  
input (Note 4)  
applied to the  
IN-MAX  
15  
P-P  
Data-Output Transition Time  
20% to 80% (Note 4)  
70  
120  
ps  
TRANSFER CHARACTERISTIC  
K28.5 pattern at 3.2Gbps  
23  
13.2  
14  
19  
25  
17  
150  
5
PRBS 2 - 1 equivalent pattern at 2.7Gbps  
(Note 6)  
Deterministic Jitter (Notes 4, 5)  
DJ  
ps  
P-P  
K28.5 pattern at 2.1Gbps  
12  
23  
PRBS 2 - 1 equivalent pattern at 155Mbps  
85  
(Note 6)  
Random Jitter  
V
= 4mV  
(Notes 4, 7)  
3.5  
ps  
RMS  
IN  
P-P  
Maxim Integrated  
2
MAX3747A/MAX3747B  
155Mbps to 3.2Gbps, Low-Power SFP  
Limiting Amplifiers  
ELECTRICAL CHARACTERISTICS (continued)  
(V  
= +2.97V to +3.63V, CML output load is 50to V , T = -40°C to +85°C. Typical values are at V  
= +3.3V and T = +25°C,  
CC A  
CC  
CC  
A
unless otherwise specified.) (Note 1)  
PARAMETER  
Input-Referred Noise  
Low-Frequency Cutoff  
LOS Hysteresis  
SYMBOL  
CONDITIONS  
(Note 4)  
MIN  
TYP  
120  
6.4  
MAX  
150  
UNITS  
µV  
V
= 4mV  
IN  
P-P  
RMS  
kHz  
10log(V  
/ V  
) (Note 4)  
ASSERT  
1.25  
2.3  
dB  
DEASSERT  
MAX3747A (Notes 4, 8)  
LOS Assert/Deassert Time  
40.0  
µs  
MAX3747B (Notes 4, 8, 9)  
Low LOS Assert Level  
Low LOS Deassert Level  
Medium LOS Assert Level  
Medium LOS Deassert Level  
High LOS Assert Level  
High LOS Deassert Level  
TTL/CMOS I/O  
V
V
V
V
V
V
= -1.3V (Notes 4, 10)  
= -1.3V (Notes 4, 10)  
= -0.68V (Notes 4, 10)  
= -0.68V (Notes 4, 10)  
= -0.114V (Notes 4, 10)  
= -0.114V (Notes 4, 10)  
2.5  
4.1  
6.2  
5.9  
9.3  
mV  
TH  
TH  
TH  
TH  
TH  
TH  
P-P  
P-P  
P-P  
P-P  
P-P  
P-P  
mV  
mV  
mV  
mV  
mV  
22.0  
36.0  
29.0  
44.8  
53.7  
86.0  
36.0  
62.0  
63.6  
115  
V
-
V
-
V
-
CC  
CC  
CC  
V
Voltage  
V
V
REF  
REF  
1.35  
1.3V  
1.19  
LOS Output High Voltage  
LOS Output Low Voltage  
DISABLE Input High  
V
R
R
= 4.7kto 10kto V  
= 4.7kto 10kto V  
(3V)  
2.4  
2.0  
V
V
OH  
LOS  
CC_HOST  
V
(3.6V)  
0.4  
OL  
LOS  
CC_HOST  
V
V
IH  
DISABLE Input Low  
V
0.8  
10  
V
IL  
DISABLE Input Current  
R
LOS  
= 4.7kto 10kto V  
µA  
CC_HOST  
Note 1: The data-input transition time is controlled by a 4th-order Bessel filter with f  
= 0.75 x 2.667GHz for all data rates of  
-3dB  
2.667Gbps and below. The f  
= 0.75 x 3.2GHz for a data rate of 3.2Gbps.  
-3db  
Note 2: Supply current is measured with unterminated outputs or with AC-coupled output termination (see Figure 1).  
Note 3: Between sensitivity and overload, all AC specifications are met and the output is 0.95 x limited output amplitude.  
Note 4: Guaranteed by design and characterization.  
Note 5: The deterministic jitter (DJ) caused by the input filter is not included in the DJ generation specification.  
23  
Note 6: The PRBS 2 - 1 equivalent pattern consists of a K28.5 pattern plus 240 ones plus K28.5 pattern plus 240 zeros.  
Note 7: Random jitter was measured without using a filter at the input.  
Note 8: The signal at the input is switched between two amplitudes, Signal_ON and Signal_OFF, as shown in Figure 2A.  
Note 9: The signal at the input is switched between 1.2V  
and Signal_OFF as shown in Figure 2B.  
P-P  
Note 10: V is the voltage at pin 5 referenced to V  
(see Figure 5).  
TH  
CC  
Maxim Integrated  
3
MAX3747A/MAX3747B  
155Mbps to 3.2Gbps, Low-Power SFP  
Limiting Amplifiers  
V
CC  
I
CC  
(SUPPLY  
CURRENT)  
I
OUT  
(CML OUTPUT  
CURRENT)  
50I  
50I  
MAX3747A  
MAX3747B  
Figure 1. Power-Supply Current Measurement  
V
IN  
V
IN  
SIGNAL_ON = 1.2V (OVERLOAD)  
P-P  
SIGNAL_ON  
1dB  
6dB  
MAXIMUM DEASSERT LEVEL FOR A GIVEN V  
TH  
MAXIMUM DEASSERT LEVEL FOR A GIVEN R /R RATIO  
TH1 TH2  
MAXIMUM POWER-DETECT WINDOW  
MAXIMUM POWER-DETECT WINDOW  
6dB  
MINIMUM ASSERT LEVEL FOR A GIVEN V  
TH  
MINIMUM ASSERT LEVEL FOR A GIVEN R /R RATIO  
TH1 TH2  
SIGNAL_OFF  
SIGNAL_OFF  
0V  
TIME  
0V  
TIME  
Figure 2A. LOS Deassert Threshold—Set 1dB Below Receiver  
Sensitivity  
Figure 2B. LOS Deassert Threshold—Operating at Input  
Overload  
Maxim Integrated  
4
MAX3747A/MAX3747B  
155Mbps to 3.2Gbps, Low-Power SFP  
Limiting Amplifiers  
Typical Operating Characteristics  
(V  
= +3.3V, T = +25°C, unless otherwise noted.)  
CC  
A
OUTPUT EYE DIAGRAM  
(MINIMUM INPUT)  
OUTPUT EYE DIAGRAM  
(MAXIMUM INPUT)  
OUTPUT EYE DIAGRAM  
(MINIMUM INPUT)  
MAX3747A/MAX3747B toc01  
MAX3747A/MAX3747B toc02  
MAX3747A/MAX3747B toc03  
23  
23  
23  
3.2Gbps, 2 - 1 PRBS, 4mV  
3.2Gbps, 2 - 1 PRBS, 1200mV  
2.7Gbps, 2 - 1 PRBS, 4mV  
P-P  
P-P  
P-P  
60mV/div  
60mV/div  
60mV/div  
50ps/div  
50ps/div  
70ps/div  
OUTPUT EYE DIAGRAM  
(MAXIMUM INPUT)  
SUPPLY CURRENT vs. TEMPERATURE  
(EXCLUDES OUTPUT CURRENT)  
°
OUTPUT EYE DIAGRAM AT +100 C  
MAX3747A/MAX3747B toc04  
MAX3747A/MAX3747B toc05  
50  
45  
40  
35  
30  
25  
20  
15  
10  
23  
2.125Gbps, CJTPAT, 50mV  
2.7Gbps, 2 - 1 PRBS, 1200mV  
P-P  
P-P  
60mV/div  
60mV/div  
80ps/div  
-40 -30 -20 -10  
0
10 20 30 40 50 60 70 80  
70ps/div  
°
TEMPERATURE ( C)  
TRANSFER FUNCTION  
(OUTPUT VOLTAGE vs. INPUT VOLTAGE)  
RANDOM JITTER vs. TEMPERATURE  
RANDOM JITTER vs. INPUT AMPLITUDE  
3.0  
2.7  
2.4  
2.1  
1.8  
1.5  
1.2  
0.9  
0.6  
1000  
900  
800  
700  
600  
500  
400  
300  
200  
100  
0
5
4
3
2
1
0
V
= 50mV , FREQ = 2.7Gbps  
P-P  
IN  
3.2Gbps  
MAX3747A/MAX3747B  
0.3  
0
-40 -30 -20 -10  
0
10 20 30 40 50 60 70 80  
0
1
2
3
4
5
1
10  
100  
1000  
10,000  
°
TEMPERATURE ( C)  
DIFFERENTIAL INPUT (mV  
)
DIFFERENTIAL INPUT AMPLITUDE (mV  
)
P-P  
P-P  
Maxim Integrated  
5
MAX3747A/MAX3747B  
155Mbps to 3.2Gbps, Low-Power SFP  
Limiting Amplifiers  
Typical Operating Characteristics (continued)  
(V  
= +3.3V, T = +25°C, unless otherwise noted.)  
CC  
A
DETERMINISTIC JITTER  
vs. INPUT AMPLITUDE  
DETERMINISTIC JITTER  
vs. TEMPERATURE  
BIT-ERROR RATIO vs. INPUT VOLTAGE  
40  
35  
30  
25  
20  
15  
10  
5
25  
20  
15  
10  
5
FREQ = 3.2Gbps  
PATTERN = K28.5  
13,000  
3.2Gbps, K28.5 PATTERN  
MAXIM  
MAX3747A/MAX3747B  
12,000  
11,000  
10,000  
9000  
8000  
7000  
6000  
5000  
4000  
3000  
2000  
1000  
1
V
= 5mV  
P-P  
IN  
MICREL  
SY88993V  
V
= 500mV  
IN  
P-P  
0
0
0
1
2
3
4
5
6
7
8
9
10  
1
10  
100  
1000  
10,000  
-40 -30-20 -10  
0
10 20 30 40 50 60 70 80  
DIFFERENTIAL INPUT AMPLITUDE (mV  
)
°
P-P  
TEMPERATURE ( C)  
DIFFERENTIAL INPUT AMPLITUDE (mV  
)
P-P  
LOS ASSERT/DEASSERT TIMES vs. INPUT  
AMPLITUDE (HIGH R /R SETTINGS)  
LOS ASSERT/DEASSERT TIMES vs. INPUT  
AMPLITUDE (LOW R /R SETTINGS)  
ASSERT/DEASSERT vs. V  
TH1 TH2  
TH  
TH1 TH2  
40  
35  
30  
25  
20  
15  
10  
5
120  
110  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
40  
35  
30  
25  
20  
15  
10  
5
V
TH  
(V) = VOLTAGE AT PIN 5 (V)  
MAX3747B  
MAX3747B  
WITH RESPECT TO V  
CC  
DEASSERT  
LOS ASSERT  
LOS DEASSERT  
LOS ASSERT  
LOS DEASSERT  
ASSERT  
0
0
0
200 400 600 800 1000 1200 1400  
INPUT AMPLITUDE (mV  
-1.4 -1.2 -1.0 -0.8 -0.6 -0.4 -0.2  
(V)  
0
0
200 400 600 800 1000 1200 1400  
INPUT AMPLITUDE (mV  
)
V
TH  
)
P-P  
P-P  
OUTPUT RETURN vs. FREQUENCY (SDD22)  
(INPUT SIGNAL LEVEL = -60dBm)  
INPUT RETURN vs. FREQUENCY (SDD11)  
(INPUT SIGNAL LEVEL = -60dBm)  
ASSERT/DEASSERT vs. TEMPERATURE  
40  
35  
30  
25  
20  
15  
10  
5
30  
20  
30  
20  
V
= -1.1V, FREQ = 2.7Gbps  
TH  
23  
PATTERN = PRBS 2 - 1  
10  
10  
0
0
DEASSERT  
ASSERT  
-10  
-20  
-30  
-10  
-20  
-30  
-40 -30 -20 -10  
0
10 20 30 40 50 60 70 80  
100  
1000  
10,000  
100  
1000  
10,000  
°
TEMPERATURE ( C)  
FREQUENCY (MHz)  
FREQUENCY (MHz)  
Maxim Integrated  
6
MAX3747A/MAX3747B  
155Mbps to 3.2Gbps, Low-Power SFP  
Limiting Amplifiers  
Pin Description  
NAME  
PIN  
FUNCTION  
MAX3747A/  
MICREL  
MAX3747B  
SY8893V  
Disable Function Pin. The data outputs are held static when this pin is asserted high,  
transistor-to-transistor logic (TTL). The data outputs are enabled when this pin is held  
low. LOS functions remain active when outputs are disabled. For normal operation  
connect to GND.  
1
DISABLE  
EN  
2
3
4
IN+  
IN-  
DIN  
Noninverted Input Signal  
DIN  
Inverted Input Signal  
V
V
Reference Voltage for LOS Threshold Setting  
Loss-of-Signal Level Set. A voltage on this pin created by a two-resistor divider sets  
REF  
REF  
5
6
TH  
LOSLVL  
GND  
the threshold level. Connect one resistor from this pin to V  
and another from this pin  
CC  
to V  
(see Figure 5).  
REF  
GND  
Ground  
Loss of Signal. Open collector for the MAX3747A; internal 100kpullup to V  
for the  
CC  
MAX3747B. LOS is high when the level of the input signal drops below the preset  
threshold set by the TH input. LOS is deasserted low when the signal level is above  
the threshold.  
7
LOS  
LOS  
OUT-  
8
9
DOUT  
Inverted Data Output, CML  
Noninverted Data Output, CML  
Positive Power Supply  
OUT+  
DOUT  
10  
V
V
CC  
CC  
Detailed Description  
The limiting amplifiers consist of a multistage amplifier,  
offset-correction circuitry, an output buffer, and loss-of-  
signal detect circuitry (see the Functional Diagram).  
V
CC  
MAX3747A  
MAX3747B  
Input Stage  
The input stage is shown in Figure 3. It provides 50ter-  
mination to V  
for each input signal, IN+ and IN-. The  
REF  
MAX3747A/MAX3747B should be AC-coupled.  
ESD  
STRUCTURES  
Multistage Amplifier  
The high-bandwidth multistage amplifier provides approx-  
imately 61dB of gain for the MAX3747A/MAX3747B.  
Offset Correction Loop  
The MAX3747A/MAX3747B are susceptible to DC offsets  
in the signal path because they have high gain. In com-  
munication systems using NRZ data with a 50% duty  
cycle, pulse-width distortion present in the signal or gener-  
ated in the transimpedance amplifier appears as an input  
offset and is reduced by the offset correction loop.  
50  
50Ω  
V
REF  
The offset correction loop sets a low-frequency cutoff of  
3.2kHz.  
Figure 3. Differential Input Stage  
Maxim Integrated  
7
MAX3747A/MAX3747B  
155Mbps to 3.2Gbps, Low-Power SFP  
Limiting Amplifiers  
Functional Diagram  
V
CC  
MAX3747A  
MAX3747B  
50Ω  
50Ω  
DIGITAL  
OFFSET  
CORRECTION  
OUT+  
OUT-  
IN+  
IN-  
DISABLE  
50Ω  
50Ω  
V
REF  
V
SIGNAL DETECT  
TH LOS  
REF  
V
REF  
R
TH1  
R
TH2  
R
+ R 5kΩ  
TH2  
TH1  
V
CC  
CML Output Buffer  
V
CC  
The CML outputs of the MAX3747A/MAX3747B limiting  
amplifiers provide high tolerance to impedance mis-  
matches and inductive connectors. The output current  
is approximately 16mA for the MAX3747A/MAX3747B.  
50Ω  
50Ω  
Connecting the DISABLE pin to V  
disables the out-  
CC  
OUT+  
OUT-  
put. If the LOS pin is connected to the DISABLE pin,  
the outputs OUT+ and OUT- are at a static voltage  
(squelch) whenever the input signal level drops below  
the LOS threshold. The output buffer can be AC- or DC-  
coupled to the load (Figure 4).  
DISABLE  
DATA  
Q3 Q4  
Q1  
Q2  
ESD  
STRUCTURES  
The MAX3747A/MAX3747B output is 800mV  
.
P-P  
DISABLE  
DISABLE  
Figure 4. CML Output Buffer  
Maxim Integrated  
8
MAX3747A/MAX3747B  
155Mbps to 3.2Gbps, Low-Power SFP  
Limiting Amplifiers  
Loss-of-Signal Indicator  
Applications Information  
Program the LOS Assert Threshold  
Program the LOS assert threshold according to Figure  
The MAX3747A/MAX3747B are equipped with LOS cir-  
cuitry that indicates when the input signal is below a pro-  
grammable threshold, set by a voltage on the TH pin  
(see the Typical Operating Characteristics). The voltage  
on the TH pin is set by two resistors, one connecting  
5. The combination of R  
and R  
should be  
TH2  
TH1  
greater than or equal to 5k, see the Assert/Deassert  
vs. V graph in the Typical Operating Characteristics.  
TH  
from the TH pin to V  
and the other connecting from TH  
(Figure 5). An RMS power detector compares  
CC  
to V  
REF  
Select the Coupling Capacitor  
the input signal amplitude with this threshold and feeds  
the signal-detect information to the LOS output, which is  
open collector. To prevent LOS chatter in the region of  
the programmed threshold, approximately 2dB of hys-  
teresis is built into the LOS assert/deassert function.  
Once asserted, LOS is not deasserted until the input  
amplitude rises to the required level. Figure 6 shows the  
LOS output circuit.  
When AC-coupling is desired, coupling capacitors C  
IN  
and C  
should be selected to minimize the receiv-  
OUT  
er’s deterministic jitter. Jitter is decreased as the input  
low-frequency cutoff (f ) is decreased:  
IN  
f
IN  
= 1/[2π(50)(C )]  
IN  
For all applications, the recommended value for C  
IN  
and C  
is 0.1µF, which provides f equal to 32kHz.  
OUT  
IN  
Refer to Application Note HFAN-1.1: Choosing AC-  
Coupling Capacitors on the Maxim website  
(www.maximintegrated.com).  
V
CC  
R
R
TH2  
TH1  
TH  
V
REF  
V
= (R x (V - V )) / (R + R  
)
TH  
TH2  
REF  
CC  
TH1  
TH2  
V
TH  
IS V REFERENCED  
CC  
R
TH1  
+ R 5kΩ  
TH2  
Figure 5. MAX3747A/MAX3747B LOS Threshold Circuit  
V
CC  
*
LOS  
ESD  
STRUCTURE  
*100kPULLUP (MAX3747B ONLY)  
Figure 6. MAX3747A/MAX3747B LOS Output Circuit  
Maxim Integrated  
9
MAX3747A/MAX3747B  
155Mbps to 3.2Gbps, Low-Power SFP  
Limiting Amplifiers  
Pin Configuration  
Chip Information  
PROCESS: SiGe Bipolar  
TOP VIEW  
+
DISABLE  
IN+  
1
2
3
4
5
10  
9
V
CC  
OUT+  
OUT-  
LOS  
Package Information  
MAX3747A  
MAX3747B  
IN-  
8
For the latest package outline information and land patterns (foot-  
prints), go to www.maximintegrated.com/packages. Note that a  
“+”, “#”, or “-” in the package code indicates RoHS status only.  
Package drawings may show a different suffix character, but the  
drawing pertains to the package regardless of RoHS status.  
V
7
REF  
TH  
6
GND  
µMAX  
LAND  
PATTERN NO.  
PACKAGE  
TYPE  
PACKAGE  
CODE  
OUTLINE NO.  
21-0061  
90-0330  
10 µMAX  
U10CN+1  
Maxim Integrated  
10  
MAX3747A/MAX3747B  
155Mbps to 3.2Gbps, Low-Power SFP  
Limiting Amplifiers  
Revision History  
REVISION REVISION  
PAGES  
DESCRIPTION  
NUMBER  
DATE  
CHANGED  
0
1
2
5/05  
10/07  
8/12  
Initial release  
Release of the MAX3747B.  
1–10  
1–10  
Removed MAX3747 from data sheet, updated Electrical Characteristics.  
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent  
licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and  
max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.  
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 ________________________________ 11  
© 2012 Maxim Integrated Products, Inc.  
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.  

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