MAX3748HETETG16 Maxim Integrated Products, Inc., MAX3748HETETG16 Datasheet
MAX3748HETETG16
Related parts for MAX3748HETETG16
MAX3748HETETG16 Summary of contents
Page 1
Rev 4; 7/06 General Description The MAX3748/MAX3748A/MAX3748B multirate limiting amplifiers function as a data quantizer for SONET, Fibre Channel, and Gigabit Ethernet optical receivers. The amplifier accepts a wide range of input voltages and pro- vides constant-level current-mode logic ...
Page 2
Compact 155Mbps to 4.25Gbps Limiting Amplifier ABSOLUTE MAXIMUM RATINGS Power-Supply Voltage (V ) .................................-0.5V to +6.0V CC Voltage at IN+, IN- ..........................(V CC Voltage at DISABLE, OUTPOL, RSSI, CAZ1, CAZ2, LOS, TH............................-0. Current into LOS ...................................................-1mA to +9mA ...
Page 3
ELECTRICAL CHARACTERISTICS (continued 2.97V to 3.63V, ambient temperature = -40°C to +85°C, CML output load is 50Ω +25° 3.3V, unless otherwise specified. The data input transition time is controlled by a 4th-order Bessel ...
Page 4
Compact 155Mbps to 4.25Gbps Limiting Amplifier (T = +25°C and V = +3.3V, unless otherwise specified SUPPLY CURRENT vs. TEMPERATURE 100 -40 -30-20 - ...
Page 5
V = +3.3V, unless otherwise specified OUTPUT EYE DIAGRAM WITH MAXIMUM INPUT (DATA RATE OF 2.6667Gbps) MAX3748 toc10 2.7Gbps PRBS, 1200mV P-P 100mV/div 50ps/div INPUT RETURN GAIN vs. FREQUENCY (SDD11) ...
Page 6
Compact 155Mbps to 4.25Gbps Limiting Amplifier PIN NAME MAX3748/ MAX3748B MAX348A Supply Voltage IN+ Noninverted Input Signal, CML 3 3 IN- Inverted Input Signal, CML Loss-of-Signal Threshold Pin. Resistor to ground ...
Page 7
(SUPPLY CURRENT) CC 50Ω 50Ω MAX3748/ MAX3748A/ MAX3748B Figure 1. Power-Supply Current Measurement Detailed Description The limiting amplifier consists of an input buffer, a multi- stage amplifier, offset correction circuitry, an output buffer, power-detection circuitry, and signal-detect ...
Page 8
Compact 155Mbps to 4.25Gbps Limiting Amplifier CML Output Buffer The MAX3748/MAX3748A/MAX3748B limiting amplifi- er’s CML output provides high tolerance to impedance mismatches and inductive connectors. The output cur- rent is approximately 18mA. The output is disabled by connecting the DISABLE ...
Page 9
Select the Offset-Correction Capacitor The capacitor between CAZ1 and CAZ2 determines the time constant of the signal path DC offset cancellation loop. To maintain stability important to keep a one- decade separation between f and the low-frequency IN ...
Page 10
Compact 155Mbps to 4.25Gbps Limiting Amplifier V (+3.3V OR APD CC V (+3.3V) CC REFERENCE VOLTAGE) 5-PIN TO HEADER PIN OR IN+ APD MAX3744 TIA IN- DS1858 3-INPUT DIAGNOSTIC MONITOR R1 C1 3kΩ 0.1µF V (+3.3V OR APD CC REFERENCE ...
Page 11
Compact 155Mbps to 4.25Gbps V CC CAZ1 50Ω 50Ω IN+ IN- RSSI DETECT V OUT+ OUT- OUTPOL RSSI 13 8 GND CAZ2 LOS 14 7 MAX3748/ MAX3748A CAZ1 DISABLE 15 6 EP* GND TH 16 ...
Page 12
Compact 155Mbps to 4.25Gbps Limiting Amplifier (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.) E MARKING E/2 AAAA D 0.10 C 0.08 ...
Page 13
... T1233-3 0.95 1.10 0.50 BSC. T1233-4 1.10 0.95 0.30 0.40 0.50 0.95 T1633-1 1.10 16 T1633-2 0.95 1.10 4 T1633F-3 0.65 0.80 4 T1633FH-3 0.65 0.80 0 0.02 0.05 T1633-4 0.95 1.10 0.20 REF - - 0. registered trademark of Maxim Integrated Products, Inc. Limiting Amplifier DOWN E2 PIN ID JEDEC BONDS MAX. MIN. NOM. MAX. ALLOWED 1.25 1.25 0.25 0.70 0.35 x 45° WEEC NO 1.25 0.95 1.10 1.25 0.35 x 45° WEED-1 NO 1.25 0.95 1.10 1.25 0.35 x 45° WEED-1 YES 1.25 0.95 1.10 1.25 0.35 x 45° WEED-1 YES 1 ...