MAX14950A datasheet(4/20 Pages) MAXIM

Part #	MAX14950A

Description	Single-Lane PCIe Equalizer/Redriver

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Manufacturer	MAXIM [Maxim Integrated Products]

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MAX14950A

Single-Lane PCIe Equalizer/Redriver

4

Maxim Integrated

ELECTRICAL CHARACTERISTICS (continued)

(VCC = +3.0V to +3.6V, CCL = 200nF coupling capacitor on each output, RL = 50I on each output, TA = 0NC to +70NC, unless oth-

erwise noted. Typical values are at VCC = +3.3V and TA = +25NC.) (Note 3)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

AC PERFORMANCE (Note 4)

Input Return Loss, Differential

RLRX-DIFF

f = 0.05GHz to 1.25GHz

9

dB

f = 1.25GHz to 2.5GHz

8

dB

f = 2.5GHz to 4GHz

5

dB

Input Return Loss, Common

Mode

RLRX-CM

f = 0.05GHz to 2.5GHz

6

dB

f = 2.5GHz to 4GHz

4

dB

Output Return Loss, Differential

RLTX-DIFF

f = 0.05GHz to 1.25GHz

10

dB

f = 1.25GHz to 2.5GHz

8

dB

f = 2.5GHz to 4GHz

4

dB

Output Return Loss, Common

Mode

RLTX-CM

f = 0.05GHz to 2.5GHz

6

dB

f = 2.5GHz to 4GHz

4

dB

Redriver-Operation Differential

Input-Signal Range

VRX-DIFF-

PP

100

1400

mVP-P

Full-Swing Differential Output

Voltage (No Deemphasis)

VTX-DIFF-

PP

OEQ_2 = OEQ_1 = OEQ_0 = GND

800

1000

1400

mVP-P

Output Deemphasis Ratio, 0dB

VTX-DE-

RATIO-0dB

OEQ_2 = OEQ_1 = OEQ_0 = GND,

Figure 1

0

dB

Output Deemphasis Ratio, 3.5dB

VTX-DE-

RATIO-

3.5dB

OEQ_2 = OEQ_1 = GND, OEQ_0 = VCC,

Figure 1

3.5

dB

Output Deemphasis Ratio, 6dB

VTX-DE-

RATIO-6dB

OEQ_2 = OEQ_0 = GND, OEQ_1 = VCC,

Figure 1

6

dB

Output Deemphasis Ratio, 6dB

with Higher Amplitude

VTX-DE-HA-

RATIO-6dB

OEQ_2 = GND, OEQ_1 = OEQ_0 = VCC,

Figure 1

6

dB

Output Deemphasis Ratio, 3.5dB

with Preshoot

VTX-DE-

PS-RATIO-

3.5dB

OEQ_2 = VCC, OEQ_1 = OEQ_0 = GND,

Figure 1

3.5

dB

Output Deemphasis Ratio, 6dB

with Preshoot

VTX-DE-PS-

RATIO-6dB

OEQ_2 = OEQ_0 = VCC, OEQ_1 = GND,

Figure 1

6

dB

Output Deemphasis Ratio, 9dB

with Preshoot

VTX-DE-PS-

RATIO-9dB

OEQ_2 = OEQ_1 = VCC, OEQ_0 = GND,

Figure 1

9

dB

Output Deemphasis Ratio,

9dB with Preshoot and Higher

Amplitude

VTX-DE-PS-

HA-RATIO-

9dB

OEQ_2 = OEQ_1 = OEQ_0 = VCC,

Figure 1

9

dB

Input Equalization, 5dB

VRX-EQ-

5dB

INEQ_1 = INEQ_0 = GND (Note 5)

5

dB

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