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Ref: ATGBICS_X4DACBL3-C_V1 Page 6 of 8

Product Datasheet

General Product Characteristics

Q/4SFP+ DAC Specifications

Number of Lanes

Tx & Rx

Channel Data Rate

10.3125 Gbps

Operating Temperature

0 to + 70°C

Storage Temperature

-40 to + 85°C

Supply Voltage

3.3 V nominal

Electrical Interface

38 pins edge connector (QSFP+)

20 pins edge connector (SFP+)

Management Interface

Serial, I2C

High Speed Characteristics

Notes:

1. Reflection Coefficient given by equation SDD11(dB) < -12 + 2 × SQRT(f), with f in GHz

2. Reflection Coefficient given by equation SDD11(dB) < -6.3 + 13 × log10(f/5.5), with f in GHz

Parameter

Symbol

Min

Typical

Max

Unit

Note

Differential Impedance

TDR

90

100

110

Ώ

Insertion loss

SDD21

-17.04

dB

At 5.15625 GHz

Differential Return Loss

SDD11

SDD22

See 1

dB

At 0.05 to 4.1 GHz

See 2

dB

At 4.1 to 11.1 GHz

Differential to common mode

return loss

SCD11

SCD22

-10

dB

At 0.2 to 11.1 GHz

Common-mode to common-

mode output return loss

SCC11

SCC22

-3

dB

At 0.01 to 11.1 GHz