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DS125BR401ANJY Datasheet(PDF) 8 Page - Texas Instruments |
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DS125BR401ANJY Datasheet(HTML) 8 Page - Texas Instruments |
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8 / 52 page  DS125BR401A SNLS466A – SEPTEMBER 2013 – REVISED MARCH 2014 www.ti.com Electrical Characteristics (continued) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VTX-CM-DC-LINE- Absolute delta of DC common mode 25 mV DELTA voltage between TX+ and TX- HIGH SPEED OUTPUTS (A-CHANNELS) VTXA-diff1-pp Differential measurement with OUTA_n+ and OUTA_n-, AC-Coupled and terminated by Output Voltage Differential Swing 50 Ω to GND, 375 465 600 mVp-p Inputs AC-Coupled, VID = 600 mVp-p VOD = 001'b (800mV) VTXA-diff2-pp Differential measurement with OUTA_n+ and OUTA_n-, AC-Coupled and terminated by Output Voltage Differential Swing 50 Ω to GND, 550 675 825 mVp-p Inputs AC-Coupled, VID = 1000 mVp-p VOD = 001'b (800mV) VTXA-diff3-pp Differential measurement with OUTA_n+ and OUTA_n-, AC-Coupled and terminated by Output Voltage Differential Swing 50 Ω to GND, 475 600 750 Vp-p Inputs AC-Coupled, VID = 600 mVp-p DEMA[1:0] = 10, VOD = 1300mV VTXA-diff4-pp Differential measurement with OUTA_n+ and OUTA_n-, AC-Coupled and terminated by Output Voltage Differential Swing 50 Ω to GND, 775 915 1125 Vp-p Inputs AC-Coupled, VID = 1000 mVp-p VOD = 110'b (1300mV) TTXA-IDLE-DATA Time to transition to valid differential VID = 1.0 Vp-p, 3 Gbps 0.04 ns signal after idle TTXA-DATA-IDLE Time to transition to idle after VID = 1.0 Vp-p, 3 Gbps 0.70 ns differential signal TPDEQA Differential propagation delay - EQ = Level 1 to Level 4 80 ps Channel A HIGH SPEED OUTPUTS (B-CHANNELS) VTXB-diff1-pp Differential measurement with OUTB_n+ and OUTB_n-, AC-Coupled and terminated by Output Voltage Differential Swing 50 Ω to GND, 0.8 1.0 1.2 Vp-p Inputs AC-Coupled, VID = 1.0 Vp-p, MODE_B = 1 DEMB1 = 0, DEMB0 = 1(2) VTXB-diff2-pp Differential measurement with OUTB_n+ and OUTB_n-, AC-Coupled and terminated by Output Voltage Differential Swing 50 Ω to GND, 670 820 930 mVp-p Inputs AC-Coupled, VID = 1.0 Vp-p, MODE_B = 0 DEMB1 = 0, DEMB0 = R VTXB-diff3-pp Differential measurement with OUTB_n+ and OUTB_n-, AC-Coupled and terminated by Output Voltage Differential Swing 50 Ω to GND, 950 1140 1250 mVp-p Inputs AC-Coupled, VID = 1.0 Vp-p, MODE_B = 0 DEMB1 = R, DEMB0 = FLOAT (2) In SAS-3 and PCIe GEN3 mode, the output VOD level is not fixed. It will be adjusted automatically based on the VID input amplitude level. The output VOD level set by DEMA/B[1:0] in this mode BOUTn is dependent on the VID level and the frequency content. The DS125BR401A repeater is designed to be transparent in this mode, so the TX-FIR (de-emphasis) is passed to the RX to support the handshake negotiation link training. 8 Submit Documentation Feedback Copyright © 2013–2014, Texas Instruments Incorporated Product Folder Links: DS125BR401A |
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