DS30EA101 0.15 to 3.125 Gbps Adaptive Cable Equalizer General Description Features The DS30EA101 is an adaptive cable equalizer optimized for equalizing data transmitted over copper cables. The equalizer operates over a range of data rates from 150 Mbps to 3.125 Gbps and automatically adapts to equalize signals sent over any cable length from zero meters to lengths that attenuate the signal by 50 dB at 1.5 GHz. The DS30EA101 allows either single-ended or differential input. This enables equalization of signals over coaxial cables as well as twisted pair cables. Additional features include an LOS detect and output enable which, when tied together, disable the output when no input signal is present. The DS30EA101 is powered from a single 2.5V supply and consumes 115 mW (typical). It operates over the full industrial temperature range of -40°C to +85°C and is available in a 4 x 4 mm 16-pin LLP package. ■ ■ ■ ■ ■ Automatic equalization of coaxial and twisted pair cables Data rates from 150 Mbps to 3.125 Gbps Supports SD and HD video resolutions Power consumption: 115 mW typical Industrial temperature range: -40°C to +85°C Applications ■ Cable extension ■ Data recovery equalization ■ Security and surveillance Typical Application 30151901 © 2012 Texas Instruments Incorporated 301519 SNLS404 www.ti.com DS30EA101 0.15 to 3.125 Gbps Adaptive Cable Equalizer February 9, 2012 DS30EA101 Connection Diagram 30151903 The exposed die attach pad is a negative electrical terminal for this device. It should be connected to the negative power supply voltage. 16-Pin LLP Order Number DS30EA101SQ Package Number SQB16A Ordering Information Part Number Package Quantity DS30EA101SQ 16-Pin LLP, 4.0 x 4.0 x 0.8 mm, 0.65 mm pitch Reel of 1000 DS30EA101SQE 16-Pin LLP, 4.0 x 4.0 x 0.8 mm, 0.65 mm pitch Reel of 250 DS30EA101SQX 16-Pin LLP, 4.0 x 4.0 x 0.8 mm, 0.65 mm pitch Reel of 4500 www.ti.com 2 DS30EA101 Pin Descriptions Pin Name I/O, Type Description 1 VEE Ground Negative power supply (ground). 2 IN+ I, Data Non-inverting input. 3 IN- I, Data Inverting input. 4 VEE Ground Negative power supply (ground). 5 DNC N/A Do not connect – leave open. 6 DNC N/A Do not connect – leave open. 7 VEE Ground Negative power supply (ground). 8 VEE Ground Negative power supply (ground). 9 VEE Ground Negative power supply (ground). 10 OUT- O, LVDS Inverting output. 11 OUT+ O, LVDS Non-inverting output. 12 VEE Ground Negative power supply (ground). 13 VCC Power Positive power supply (+2.5V). 14 EN I, LVCMOS Output enable. LOS may be tied to this pin to inhibit the output when no input signal is present. This pin has an internal pulldown. H = Outputs disabled. L = Outputs enabled. 15 LOS O, LVCMOS Loss of signal. H = No input signal detected. L = Input signal detected. 16 VCC Power Positive power supply (+2.5V). DAP VEE Ground Connect exposed DAP to negative power supply (ground). 3 www.ti.com DS30EA101 Recommended Operating Conditions Absolute Maximum Ratings (Note 1) Supply Voltage Input Voltage (all inputs) Storage Temperature Range Junction Temperature Package Thermal Resistance θJA 16-pin LLP θJC 16-pin LLP ESD Rating (HBM) 3.1V −0.3V to VCC+0.3V −65°C to +150°C +125°C Supply Voltage (VCC) Input Coupling Capacitance Operating Free Air Temperature (TA) 2.5V ±5% 1.0 µF -40°C to +85°C +40°C/W +6°C/W ≥±6 kV ≥±300V ≥±2 kV ESD Rating (MM) ESD Rating (CDM) DC Electrical Characteristics Over recommended supply voltage and operating temperature ranges, unless otherwise specified. (Note 2, Note 3) Symbol Parameter Conditions Reference Min Typ Max Units VIN Input Voltage 0m cable length IN+, IN- 720 800 880 mVP−P VSS Steady State Differential Output Voltage 100Ω load, Figure 1 OUT+, OUT- 500 700 900 mVP-P VOD Differential Output Voltage 250 350 450 mV ΔVOD Change in Magnitude of VOD for Complimentary Output States 50 mV VOS Offset Voltage 1.35 V ΔVOS Change in Magnitude of VOS for Complimentary Output States 50 mV IOS Output Short Circuit Current VIH Input Voltage High Level VIL Input Voltage Low Level VOH Output Voltage High Level IOH = -2 mA VOL Output Voltage Low Level IOL = +2 mA ICC Supply Current www.ti.com 1.1 EN LOS 1.2 30 mA 1.7 VCC V VEE 0.7 V 2.0 V 45 4 0.2 V 65 mA Over recommended supply voltage and operating temperature ranges, unless otherwise specified. (Note 2, Note 3) Symbol Parameter DRIN tJIT Conditions Input Data Rate Total Jitter at BER 10-12 Reference Min IN+, IN- 150 Typ Max Units 3125 Mbps (Note 5) 3.125 Gbps, 0-10 meters CAT6 0.35 UI 2.5 Gbps, 0-25 meters CAT6 0.35 UI 1.5 Gbps, 0-50 meters CAT6 0.35 UI 3.125 Gbps, 0-100 meters RG59 0.3 UI 2.5 Gbps, 0-110 meters RG59 0.35 UI 1.5 Gbps, 0-120 meters RG59 0.2 UI tTLH Transition Time Low to High tTHL Transition Time High to Low 20% - 80%, 100Ω load, (Note 4), Figure 1 OUT+, OUT- 90 130 ps 90 130 ps Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device my occur, including inoperability and degradation of device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating Conditions indicate conditions at which the device is functional and the device should not be operated beyond such conditions. Note 2: The Electrical Characteristics tables list guaranteed specifications under the listed Recommended Operating Conditions except as otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not guaranteed. Note 3: Typical values represent most likely parametric norms at VCC = +2.5V, TA = +25°C, and at the Recommended Operating Conditions at the time of product characterization and are not guaranteed. Note 4: Specification is guaranteed by characterization and is not tested in production. Note 5: The total jitter at BER 10-12 is calculated as DJ + (14 x RJ), where DJ is deterministic jitter and RJ is random jitter. The jitter is expressed as a portion of the unit interval (UI). The UI is the reciprocal of the data rate. Timing Diagrams 30151908 FIGURE 1. LVDS Output Voltage, Offset, and Timing Parameters 5 www.ti.com DS30EA101 AC Electrical Characteristics DS30EA101 EN can be used to manually disable or enable the OUT+ and OUT- output signals. Applying a high input to EN will disable the DS30EA101 outputs by forcing the output to a logic 1, and applying a low input to EN will force the outputs to be active. EN has an internal pulldown to enable the outputs by default. LOS and EN may be tied together to automatically disable the DS30EA101 outputs when no input signal is present. Device Operation The DS30EA101 equalizes data transmitted over copper cables. It automatically adjusts its gain to reverse the effects of the cable loss and restore the original signal. For proper operation, the launch amplitude of the signal going into the cable (the signal amplitude prior to the cable attenuation) must be set appropriately. If the signal is single-ended, its single-ended amplitude must be 800 mVP-P ±10%. If the signal is differential, its differential amplitude must be 800 mVP-P ±10% (400 mVP-P single-ended). Application Information CABLE EXTENDER APPLICATION The DS30EA101 together with the DS30BA101 form a cable extender chipset optimized for extending serial data streams from serializer/deseralizer (SerDes) pairs and FPGAs over 100Ω differential cables and 75Ω coaxial cables. Setting the correct DS30BA101 output amplitude and proper cable termination are essential for optimal operation. Figure 2 shows the recommended chipset configuration for 100Ω differential cable and Figure 3 shows the recommended chipset configuration for 75Ω coaxial cable. INPUT INTERFACING The DS30EA101 accepts either differential or single-ended input. The input must be AC coupled. Figure 2 and Figure 3 show the typical configurations for differential input and single-ended input, respectively. For single-ended input, the unused input must be properly terminated as shown. OUTPUT INTERFACING The DS30EA101 output signals (OUT+ and OUT- ) are internally terminated 100Ω LVDS outputs. These outputs can be DC coupled to most common differential receivers. LOS AND EN LOS indicates the loss of signal at the DS30EA101 input. LOS is high when no input signal is present and low when a valid input signal is detected. 30151931 FIGURE 2. Cable Extender Chipset Application Circuit for 100Ω Differential Cable www.ti.com 6 DS30EA101 30151932 FIGURE 3. Cable Extender Chipset Application Circuit for 75Ω Coaxial Cable 7 www.ti.com DS30EA101 Physical Dimensions inches (millimeters) unless otherwise noted 16-Pin LLP Order Number DS30EA101SQ Package Number SQB16A www.ti.com 8 DS30EA101 Notes 9 www.ti.com DS30EA101 0.15 to 3.125 Gbps Adaptive Cable Equalizer Notes www.ti.com IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. 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