MAX3765 Maxim Integrated Products, MAX3765 Datasheet

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... Supply Voltage ♦ Low Deterministic Jitter 14ps (MAX3264) 11ps (MAX3265/MAX3765) ♦ 150ps (max) Edge Speed (MAX3265/MAX3765) 300ps (max) Edge Speed (MAX3264) ♦ Programmable Signal-Detect Function ♦ Choice of CML or PECL Output Interface ♦ 10-Pin µMAX or 16-Pin TSSOP Package PART ...

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... PARAMETER MAX3264/MAX3268/MAX3768 Data Rate MAX3265/MAX3269/MAX3765 MAX3264/MAX3268/MAX3768 Input Voltage Range MAX3265/MAX3269/MAX3765 MAX3264/MAX3268/MAX3768 (Notes 2, 3) Deterministic Jitter MAX3265/MAX3269/MAX3765 (Notes 2, 3) MAX3264/MAX3268/MAX3768 (Notes 2, 4) Random Jitter MAX3265/MAX3269/MAX3765 (Notes 2, 4) MAX3264 (Note 5) MAX3265/MAX3765 (Note 6) Data Output Edge Speed MAX3268/MAX3768 (Note 5) MAX3269 (Note 6) LOS Hysteresis ...

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... T = 0°C to +70°C. Typical values are CONDITIONS MAX3264/MAX3268/MAX3768 = 7kΩ MAX3265/MAX3269/MAX3765 MAX3264/MAX3268/MAX3768 = 7kΩ MAX3265/MAX3269/MAX3765 MAX3264/MAX3268/MAX3768 = 20kΩ MAX3265/MAX3269/MAX3765 MAX3264/MAX3268/MAX3768 = 20kΩ MAX3265/MAX3269/MAX3765 = 50Ω LOAD = 75Ω LOAD -30µA = +1.2mA = open = 0.1µF MAX3268 MAX3269 MAX3264 MAX3265 Output not squelched ...

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Limiting Amplifiers ELECTRICAL CHARACTERISTICS—MAX3265EUE (Data outputs terminated per Figure 1, V unless otherwise noted.) (Note 1) PARAMETER Data Rate Input Voltage Range Deterministic Jitter (Notes 2, 3) Random Jitter (Notes 2, 4) Data Output Edge Speed ...

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... Limiting Amplifiers MAX3265EUE LOS HYSTERESIS vs. TEMPERATURE 6.5 6.0 5 4.6kΩ TH 5.0 4 16kΩ 4.0 TH 3.5 -40 - TEMPERATURE (°C) MAX3265/MAX3269/MAX3765 DETERMINISTIC JITTER vs. INPUT AMPLITUDE 200 400 600 800 50 INPUT AMPLITUDE (mV) MAX3268/MAX3768 DATA OUTPUT EYE DIAGRAM (MINIMUM INPUT) 300mV/div 200ps/div 60 85 ...

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... R (kΩ) TH MAX3265/MAX3765 DATA OUTPUT EYE DIAGRAM 2.5Gbps (MINIMUM INPUT) 150mV/div 100ps/div OUTPUT VSWR vs. FREQUENCY 4.0 3.5 3.0 2.5 2.0 1.5 1 0.5 1.0 1.5 2.0 FREQUENCY (GHz) COMMON-MODE REJECTION RATIO vs. FREQUENCY TH 55 MAX3268/MAX3768 MAX3265/MAX3765 10M 100M 1G 30 FREQUENCY (Hz) 2.5 3.0 10G ...

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... Output Current Level. When this pin is not connected, the CML output current is approximately 16mA. When this pin is connected to ground, the output current increases to approximately 20mA. (In the MAX3265CUB/MAX3765CUB, LEVEL is internally connected to ground.) Noninverted Loss-of-Signal Output. LOS is low when the level of the input signal is above the preset threshold set by the TH input ...

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... MAX3268/MAX3269/MAX3768 OUTPUT TERMINATION Figure 1. Data Output Termination 8 _______________________________________________________________________________________ R TERM 100Ω 100Ω C OUT LOAD 100Ω C OUT MAX3264 MAX3265 MAX3765 (b) MAX3264/MAX3265/MAX3765 WITH 75Ω TERMINATION V CC 50Ω TERM 300Ω 300Ω 100Ω C OUT LOAD 150Ω ...

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... CONTROL R TH 2.5kΩ OUT+ MAX3268 MAX3269 OUT- MAX3768 R TH 2.5kΩ Limiting Amplifiers I OUT MAX3264CUE: OPEN MAX3265CUE: OPEN SQUELCH MAX3265CUB: GND (INTERNAL) MAX3765CUB: V (INTERNAL) CC MAX3264CUE: OPEN MAX3265CUE: OPEN LEVEL MAX3265CUB: GND (INTERNAL) MAX3765CUB: GND (INTERNAL) OPEN OPEN 9 ...

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... MAX3768 IN+ INPUT 100Ω BUFFER IN- TOTAL GAIN = 55dB (MAX3264/MAX3268/MAX3768) TOTAL GAIN = 49dB (MAX3265/MAX3269/MAX3765) Figure 3. Functional Diagram 10 ______________________________________________________________________________________ An RMS power detector looks at the signal from the input buffer and compares threshold set by the TH resistor (see Typical Operating Characteristics for appropriate resistor values). The signal-detect informa- tion is provided to the LOS outputs, which are internally terminated with 8kΩ ...

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... Gain Stage and Offset Correction The limiting amplifier provides approximately 55dB (MAX3264/MAX3268/MAX3768) or 49dB (MAX3265/ MAX3269/MAX3765) of gain. This large gain makes the amplifier susceptible to small DC offsets in the input sig- nal. DC offsets as low as 1mV reduce the accuracy of the power-detection circuit and may cause deterministic jitter ...

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Limiting Amplifiers V CC GND Figure 6. PECL Output Circuit The buffer’s output impedance is determined by the par- allel combination of internal and external pullup resistors, which are chosen to match the impedance of the ...

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... The MAX3264/MAX3265/MAX3268/MAX3269/MAX3765s’ typical voltage hysteresis is 4.4dB. This provides an opti- cal hysteresis of 2.2dB. GBIC Loss of Signal In a GBIC application, the GBIC’s LOS output must be high impedance when V MODULE = GND. Figure 8 CC_ shows the recommended circuit to maintain high impedance ...

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... CAZ1 1 16 N.C. CAZ2 2 15 SQUELCH GND MAX3264 IN OUT+ MAX3265 IN OUT- GND LEVEL 7 10 LOS LOS TSSOP GND IN OUT+ MAX3265 IN OUT- MAX3268 MAX3269 GND MAX3765 MAX3768 LOS µMAX ...

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... PECL MAX3765 CML MAX3768 PECL *LEVEL pin grounded MAX3264/MAX3265/MAX3765 N.C. CAZ1 CAZ2 GND IN+ IN- GND LEVEL LOS TH N.C. 0.061" (1.55mm) MAX3264/MAX3265/MAX3765 TRANSISTOR COUNT: 726 MAX3268/MAX3269/MAX3768 TRANSISTOR COUNT: 728 SUBSTRATE CONNECTED TO GND ______________________________________________________________________________________ +3.0V to +5.5V, 1.25Gbps/2.5Gbps DATA RATE (Gbps) PACKAGE 1.25 16 TSSOP-EP 16 TSSOP-EP 2.5 10 µMAX-EP 1.25 10 µMAX-EP 2.5 10 µMAX-EP 2.5 10 µ ...

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Limiting Amplifiers (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 Ø 0.50±0.1 0.6±0.1 1 0.6±0.1 TOP VIEW D2 A2 ...

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... 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. 17 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products +3.0V to +5.5V, 1.25Gbps/2.5Gbps ...