LMH0026MH

LMH0026 NSC | Alldatasheet

Document overview

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Technical content

Features

■ Supports SMPTE 259M (C) serial digital video standard ■ Supports 270 Mbps serial data rate operation ■ Supports DVB-ASI at 270 Mbps ■ Single 3.3V supply operation ■ 330 mW typical power consumption ■ Two differential, reclocked outputs ■ Choice of second reclocked output or low-jitter, differential, data-rate clock output ■ Single 27 MHz external crystal or reference clock input ■ Lock Detect indicator output ■ Output mute function for data and clock ■ Auto/Manual reclocker bypass ■ Differential LVPECL compatible serial data inputs and outputs ■ LVCMOS control inputs and indicator outputs ■ 20-Pin e-TSSOP package ■ Industrial temperature range: -40°C to +85°C ■ Footprint compatible with the LMH0046 and LMH0346

Applications

■ SDTV serial digital video interfaces for: — Digital video routers and switchers — Digital video processing and editing equipment — DVB-ASI equipment — Video standards and format converters Typical Application 30001801 © 2009 National Semiconductor Corporation 300018 www.national.com LMH0026 SD SDI Reclocker with Dual Differential Outputs

The exposed die attach pad is the negative electrical terminal for this device. It must be connected to the negative power supply voltage. 20-Pin e-TSSOP Order Number LMH0026MH See NS Package Number MXA20A www.national.com 2 LMH0026

1 LF1 Loop Filter. 2 LF2 Loop Filter. 3 NC No Connect. Not bonded internally. 4 RSVD Reserved. Do not connect or connect to ground. 5 SDI Data Input true. 6 SDI Data Input complement. 7 VCC Positive power supply input.

8 BYPASS/AUTO BYPASS

Bypass/Auto Bypass mode select. Bypasses reclocking when high. This pin has an internal pulldown.

9 OUTPUT MUTE

Data and Clock Output Mute input. Mutes the output when low. This pin has an internal pullup. 10 XTAL IN/EXT CLK Crystal or External Oscillator input. 11 XTAL OUT Crystal Oscillator output. 12 LOCK DETECT PLL Lock Detect output (active high). 13 SCO/SDO2 Serial Clock or Serial Data Output 2 complement. 14 SCO/SDO2 Serial Clock or Serial Data Output 2 true. 15 VCCO Positive power supply input (Output Driver). 16 SDO Data Output complement. 17 SDO Data Output true. 18 VCCO Positive power supply input (output driver). 19 SD SD indicator output. Output is high when locked to 270 Mbps.

20 SCO_EN

Serial Clock or Serial Data 2 Output select. Sets second output to output the clock when high and the data when low. This pin has an internal pulldown. DAP VEE Connect exposed DAP to negative power supply (ground). 3 www.national.com LMH0026

Absolute Maximum Ratings (Note 1) It is anticipated that this device will not be offered in a military qualified version. If Military/Aerospace specified devices are required, please contact the National Semicon- ductor Sales Office/Distributors for availability and specifica- tions. Supply Voltage (VCC–VEE) 4.0V Logic Supply Voltage (Vi) VEE−0.15V to VCC +0.15V Logic Input Current (single input): Vi = V EE−0.15V −5 mA Vi = V CC+0.15V +5 mA Logic Output Voltage (Vo) VEE−0.15V to VCC +0.15V Logic Output Source/Sink Current ±8 mA Serial Data Input Voltage (VSDI) VCC to VCC−2.0V Serial Data Output Sink Current (ISDO) 24 mA Package Thermal Resistance, TSSOP θJA 26.6°C/W θJC 2.4°C/W Storage Temp. Range −65°C to +150°C Junction Temperature +150°C Lead Temperature (Soldering 4 Sec) +260°C (Pb-free) ESD Rating (HBM) 7 kV ESD Rating (MM) 350V ESD Rating (CDM) 1250V Recommended Operating Conditions Supply Voltage (VCC–VEE) 3.3V ±5% Logic Input Voltage VEE to VCC Differential Serial Input Voltage 800 mV ±10% Serial Data or Clock Output Sink Current (I SO) 16 mA max. Operating Free Air Temperature (TA) −40°C to +85°C Over Supply Voltage and Operating Temperature ranges, unless otherwise specified. (Note 2, Note 3) Symbol Parameter Conditions Reference Min Typ Max Units VIH Input Voltage High Level Logic level inputs 2 VCC V VIL Input Voltage Low Level VEE 0.8 V IIH Input Current High Level VIH = VCC 47 65 µA IIL Input Current Low Level VIL = VEE −18 −25 µA VOH Output Voltage High Level IOH = −2 mA All logic level outputs 2 V VOL Output Voltage Low Level IOL = +2 mA VEE + 0.6 V VSDID Serial Input Voltage, Differential SDI 200 1600 mVP-P VCMI Input Common Mode Voltage VSDID = 200 mV VEE+1.2 VCC−0.2 V VSDOD Serial Output Voltage, Differential 100Ω differential load SDO, SCO 720 800 880 mVP-P VCMO Output Common Mode Voltage 100Ω differential load VCC− VVSDOD ICC Power Supply Current, 3.3V supply, Total

270 Mbps 100 mA

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Over Supply Voltage and Operating Temperature ranges, unless otherwise specified. (Note 3) Symbol Parameter Conditions Reference Min Typ Max Units BRSD Serial Data Rate SMPTE 259M-C SDI, SDO 270 Mbps TOLJIT Serial Input Jitter Tolerance

270 Mbps,

(Note 7, Note 8, Note 9) SDI >6 UIP-P TOLJIT Serial Input Jitter Tolerance (Note 7, Note 8, Note 10) >0.6 UIP-P tJIT Serial Data Output Jitter 270 Mbps, (Note 8, Note 11) SDO 0.02 0.08 UIP-P BWLOOP Loop Bandwidth 270 Mbps, <0.1dB Peaking 300 kHz FCO Serial Clock Output Frequency

270 Mbps data rate SCO 270 MHz

tJIT Serial Clock Output Jitter 2 3 psRMS Serial Clock Output Alignment with respect to Data Interval SDO, SCO 40 60 % Serial Clock Output Duty Cycle SCO 45 55 % TACQ Acquisition Time (Note 4, Note 6) 15 ms tr, tf Input rise/fall time 10%–90% Logic inputs 1.5 3 ns tr, tf Input rise/fall time 20%–80% SDI 1500 ps tr, tf Output rise/fall time 10%–90% Logic outputs 1.5 3 ns tr, tf Output rise/fall time 20%–80%, (Note 5) SDO, SCO 90 130 ps FREF Reference Clock Frequency

27 MHz

±50 ppm Note 1: “Absolute Maximum Ratings” are those parameter values beyond which the life and operation of the device cannot be guaranteed. The stating herein of these maximums shall not be construed to imply that the device can or should be operated at or beyond these values. The table of “Electrical Characteristics” specifies acceptable device operating conditions. Note 2: Current flow into device pins is defined as positive. Current flow out of device pins is defined as negative. All voltages are referenced to VEE (equal to zero volts). Note 3: Typical values are stated for: VCC = +3.3V, TA = +25°C. Note 4: Specification is guaranteed by design. Note 5: RL = 100Ω differential. Note 6: Measured from first SDI transition until Lock Detect (LD) output goes high (true). Note 7: Peak-to-peak amplitude with sinusoidal modulation per SMPTE RP 184-1996 paragraph 4.1. The test data signal shall be color bars. Note 8: This parameter is guaranteed by characterization over voltage and temperature limits. Note 9: Refer to “A1” in Figure 1 of SMPTE RP 184-1996. Note 10: Refer to “A2” in Figure 1 of SMPTE RP 184-1996. Note 11: Serial Data Output Jitter is total output jitter with 0.2 UIP-P input jitter. 5 www.national.com LMH0026

FIGURE 2. Equivalent SDO Output Circuit (SDO, SDO, SCO/SDO2, SCO/SDO2) within 10% of the center of the data interval. internal pull-up device to enable the output by default. PASS has an internal pull-down device. TABLE 1. Control Functionality

0 LOCK DETECT X Outputs muted

1 LOCK DETECT 0 PLL locked to supported data rate, reclocker not bypassed

the relationship between SDI, Lock Detect, and SD.

FIGURE 3. SDI, Lock Detect, and SD Timing SCO_EN is high. This pin has an internal pull-down device. rameters for a suitable crystal are given in Table 2. TABLE 2. Crystal Parameters

DC coupled to the input of the receiving device as long as the common mode ranges of both devices are compatible. Figure 4 shows an example of a DC coupled interface between the LMH0026 and LMH0001 cable driver. All that is required is a 100Ω differential termination as shown. The resistor should be placed as close to the LMH0001 input as possible. If de- sired, this network may be terminated with two 50Ω resisters and a center tap capacitor to ground in place of the single 100Ω resistor. The external loop filter capacitor (between LF1 and LF2) should be 56 nF. This is the only supported value; the loop filter capacitor should not be changed. BYPASS/AUTO BYPASS has an internal pulldown to enable Auto Bypass mode by default. This pin may be pulled high to force the LMH0026 to bypass all data. OUTPUT MUTE has an internal pullup to enable the outputs by default. This pin may be pulled low to mute the outputs. The XTAL IN/EXT CLK and XTAL OUT pins are shown with a 27 MHz crystal and the proper loading. The crystal should match the parameters described in Table 2 . Alternately, a 27MHz LVCMOS compatible clock signal may be input to XTAL IN/EXT CLK. The active high LOCK DETECT output provides an indication that proper data is being received and the PLL is locked. The SD output may be used to drive the SD/HD pin of an SDI cable driver (such as the LMH0002) in order to properly set the cable driver’s edge rate for SMPTE compliance. It defaults to low when the LMH0026 is not locked. SCO_EN has an internal pulldown to set the second output (SCO/SDO2) to output data. This pin may be pulled high to set the second output as a serial clock. The ground connection for the LMH0026 is through the large exposed DAP. The DAP must be connected to ground for proper operation of the LMH0026. www.national.com 10 LMH0026

Physical Dimensions inches (millimeters) unless otherwise noted 20-Pin TSSOP Order Number LMH0026MH 11 www.national.com LMH0026

LMH0026 SD SDI Reclocker with Dual Differential Outputs For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Design Support Amplifiers www.national.com/amplifiers WEBENCH® Tools www.national.com/webench Audio www.national.com/audio App Notes www.national.com/appnotes Clock and Timing www.national.com/timing Reference Designs www.national.com/refdesigns Data Converters www.national.com/adc Samples www.national.com/samples Interface www.national.com/interface Eval Boards www.national.com/evalboards LVDS www.national.com/lvds Packaging www.national.com/packaging Power Management www.national.com/power Green Compliance www.national.com/quality/green Switching Regulators www.national.com/switchers Distributors www.national.com/contacts LDOs www.national.com/ldo Quality and Reliability www.national.com/quality LED Lighting www.national.com/led Feedback/Support www.national.com/feedback Voltage Reference www.national.com/vref Design Made Easy www.national.com/easy PowerWise® Solutions www.national.com/powerwise Solutions www.national.com/solutions Serial Digital Interface (SDI) www.national.com/sdi Mil/Aero www.national.com/milaero Temperature Sensors www.national.com/tempsensors SolarMagic™ www.national.com/solarmagic Wireless (PLL/VCO) www.national.com/wireless PowerWise® Design University www.national.com/training THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION (“NATIONAL”) PRODUCTS. NATIONAL MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY OR COMPLETENESS OF THE CONTENTS OF THIS PUBLICATION AND RESERVES THE RIGHT TO MAKE CHANGES TO SPECIFICATIONS AND PRODUCT DESCRIPTIONS AT ANY TIME WITHOUT NOTICE. NO LICENSE, WHETHER EXPRESS, IMPLIED, ARISING BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. TESTING AND OTHER QUALITY CONTROLS ARE USED TO THE EXTENT NATIONAL DEEMS NECESSARY TO SUPPORT NATIONAL’S PRODUCT WARRANTY. EXCEPT WHERE MANDATED BY GOVERNMENT REQUIREMENTS, TESTING OF ALL PARAMETERS OF EACH PRODUCT IS NOT NECESSARILY PERFORMED. NATIONAL ASSUMES NO LIABILITY FOR APPLICATIONS ASSISTANCE OR BUYER PRODUCT DESIGN. BUYERS ARE RESPONSIBLE FOR THEIR PRODUCTS AND APPLICATIONS USING NATIONAL COMPONENTS. PRIOR TO USING OR DISTRIBUTING ANY PRODUCTS THAT INCLUDE NATIONAL COMPONENTS, BUYERS SHOULD PROVIDE ADEQUATE DESIGN, TESTING AND OPERATING SAFEGUARDS. EXCEPT AS PROVIDED IN NATIONAL’S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, NATIONAL ASSUMES NO LIABILITY WHATSOEVER, AND NATIONAL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY RELATING TO THE SALE AND/OR USE OF NATIONAL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS PRIOR WRITTEN APPROVAL OF THE CHIEF EXECUTIVE OFFICER AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: Life support devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the user. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness. 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. Copyright© 2009 National Semiconductor Corporation For the most current product information visit us at www.national.com National Semiconductor Americas Technical Support Center Email: support@nsc.com Tel: 1-800-272-9959 National Semiconductor Europe Technical Support Center Email: europe.support@nsc.com National Semiconductor Asia Pacific Technical Support Center Email: ap.support@nsc.com National Semiconductor Japan Technical Support Center Email: jpn.feedback@nsc.com www.national.com