ds64ev100sdx National Semiconductor Corporation, ds64ev100sdx Datasheet

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ds64ev100sdx

Manufacturer Part Number
ds64ev100sdx
Description
Programmable Single Equalizer
Manufacturer
National Semiconductor Corporation
Datasheet
© 2007 National Semiconductor Corporation
DS64EV100
Programmable Single Equalizer
General Description
The DS64EV100 programmable equalizer provides compen-
sation for transmission medium losses and reduces the medi-
um-induced deterministic jitter for NRZ data channel. The
DS64EV100 is optimized for operation up to 10 Gbps for both
cables and FR4 traces. The equalizer channel has eight lev-
els of input equalization that can be programmed by three
control pins.
The equalizer supports both AC and DC-coupled data paths
for long run length data patterns such as PRBS-31, and bal-
anced codes such as 8b/10b. The device uses differential
current-mode logic (CML) inputs and outputs, and is available
in a 3 mm x 4 mm 14-pin leadless LLP package. Power is
supplied from either a 2.5V or 3.3V supply.
Simplified Application Diagram
201964
Features
Equalizes up to 24 dB loss at 10 Gbps
Equalizes up to 22 dB loss at 6.4 Gbps
8 levels of programmable equalization
Operates up to 10 Gbps with 30” FR4 traces
Operates up to 6.4 Gbps with 40” FR4 traces
0.175 UI residual deterministic jitter at 6.4 Gbps with 40”
FR4 traces
Single 2.5V or 3.3V power supply
Supports AC or DC-Coupling with wide input common-
mode
Low power consumption: 100 mW Typ at 2.5V
Small 3 mm x 4 mm 14-pin LLP package
>8 kV HBM ESD
-40 to 85°C operating temperature range
20196401
November 9, 2007
www.national.com

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ds64ev100sdx Summary of contents

Page 1

... The device uses differential current-mode logic (CML) inputs and outputs, and is available 14-pin leadless LLP package. Power is supplied from either a 2.5V or 3.3V supply. Simplified Application Diagram © 2007 National Semiconductor Corporation Features ■ Equalizes loss at 10 Gbps ■ ...

Page 2

Pin Diagram Pin Descriptions I/O, Pin Name Pin Number Type HIGH SPEED DIFFERENTIAL I/O IN CML IN− 4 OUT CML Inverting and non-inverting CML differential outputs from the equalizer. An on-chip 50Ω OUT− 11 EQUALIZATION CONTROL ...

Page 3

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. If Military/Aerospace specified devices are required, please contact the National Semiconductor sales offices/ distributors for availability and specifications. Supply ...

Page 4

Symbol Parameter R Differential Input 100 MHz – 1.6 GHz, with fixture’s effect de- LI Return Loss embedded R Differential Input Differential Across IN+ and IN- IN Return Loss CML OUTPUTS (OUT+, OUT−) V Output Voltage Swing Differential measurement with ...

Page 5

FIGURE 1. Test Setup Diagram FIGURE 2. CML Output Transition Times FIGURE 3. Propagation Delay Timing Diagram 5 20196403 20196404 20196405 www.national.com ...

Page 6

DS64EV100 Applications Information The DS64EV100 is a programmable equalizer optimized for operation Gbps for backplane and cable applications. EQUALIZER BOOST CONTROL The equalizer channel supports eight programmable levels of equalization boost, and is controlled by the Boost ...

Page 7

Typical Performance Eye Diagrams and Curves Figure 5. Equalized Signal (40 in FR4, 2.5 Gbps, PRBS7, 0x07 Setting) Figure 7. Equalized Signal (40 in FR4, 6.4 Gbps, PRBS7, 0x06 Setting) Figure 9. Equalized Signal (30 in FR4, 10 Gbps, PRBS7, ...

Page 8

Figure 11. Equalized Signal (32 in Tyco XAUI Backplane, 6.25 Gbps, PRBS7, 0x06 Setting) Figure 13. DJ vs. EQ Setting (10 Gbps) www.national.com 20196413 Figure 12. DJ vs. EQ Setting (6.4 Gbps) 20196415 8 20196414 ...

Page 9

Physical Dimensions inches (millimeters) unless otherwise noted 14-Pin Leadless LLP Package Order Number DS64EV100 NS Package Number SDA14A 9 www.national.com ...

Page 10

... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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