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| SGM9115 PRODUCT DESCRIPTION SGM9115 is a video buffer which integrates triple 6dB Gain rail-to-rail output driver and triple 3rd output reconstruction filter, it has 9MHz -3dB bandwidth and 44V/s slew rate. SGM9115 provides improved image quality compared with passive LC filters and discrete drivers solution. Operating from single supplies ranging from +2.5V to +5.5V and sinking an ultra-low 6.8mA quiescent current, the SGM9115 is ideally suited for battery powered applications. SGM9115 can be DC-coupled or AC-coupled with input video signal, such as the output stage of DAC to eliminate out-of-band noise. Internal diode clamps and bias circuitry may be used if AC-coupled inputs are required. SGM9115 also integrates an internal level shift circuit which avoids sync-pulse being clipped and allows DC-coupled output. The drivers in SGM9115 can drive DC or AC-coupled single (150) or dual (75 ) loads. The SGM9115 has lead (Pb) free SOIC-8 package and ESD(HBM) reaches 8KV. Triple, 9MHz, 3rd Order SDTV Video Filter Drivers FEATURES * Triple 3rd order 9MHz (SD) filters * Transparent input clamping * 6dB output driver Gain and drive dual video load * Rail-to-Rail Output * Input Voltage Range Includes Ground * AC or DC Coupled Inputs * AC or DC Coupled Outputs * Operates from 2.5 V to 5.5 V Single power supply * Low Power (2.3mA/channel) 6.8 mA total Supply Current * Lead (Pb) Free SOIC-8 package APPLICATIONS Video amplifiers Cable and Satellite set top boxes Communications devices Video on demand Portable and handheld products Personal video recorders DVD players SDTVs BLOCK DIAGRAM IN1 Transparent Clamp 6 dB 9MHz, 3rd order OUT1 IN2 Transparent Clamp 6 dB 9MHz, 3rd order OUT2 IN3 Transparent Clamp 6 dB 9MHz, 3rd order OUT3 Shengbang Microelectronics Co, Ltd Tel: 86/451/84348461 www.sg-micro.com REV. B ELECTRICAL CHARACTERISTICS: VS = +5.0V (At RL = 150 connected to GND, Vin=1Vppand CIN = 0.1F, all outputs AC coupled with 220Funless otherwise noted) SGM9115 PARAMETER CONDITION TYP +25 INPUT CHARACTERISTICS Output Level Shift Voltage (VOLS) Input Bias Current (IB) Input Voltage Clamp (VCLAMP) Clamp Charge Current Input Resistance (RIN) Voltage Gain ( AV) IIN = -1mA VIN = VCLAMP -100mV 0.5V VIN 1.0V RL = 150 2.0 1.95 2.04 1.93 2.06 4.29 1.91 2.08 4.25 1.90 2.09 4.2 -15 -5 -20 -5.9 -21 -6 -24 -6.5 -27 -7 VIN = 0V, no load 258 340 350 380 400 mV pA mV mA M V/V V/V V mA mA 2.7 5.5 58 8.0 2.7 5.5 57 8.5 2.7 5.5 56 9.0 V V dB mA MHz MHz dB dB V/s % % ns dB ns ns MAX TYP MIN MIN MIN MIN MAX MIN MAX MIN MIN MAX MIN MAX TYP TYP TYP TYP TYP TYP TYP TYP TYP TYP TYP TYP TYP MIN/MAX OVER TEMPERATURE +25 0 to70 -40 to 85 -40 MIN/ to125 UNITS MAX OUTPUT CHARACTERISTICS Output Voltage High Swing Output Short-Circuit Current (ISC) VIN = 3V, RL = 150 to GND VIN = 3V, to GND through 10 VIN = 100mV, out short to VDD through 10 4.4 -104 110 4.3 -100 103 2.5 5.5 Power Supply Rejection Ratio (PSRR) Quiescent Current (IQ) DYNAMIC PERFORMANCE 0.1dB Bandwidth -3dB Bandwidth Filter Response Normalized Gain: fIN = 4.5MHz fIN = 27MHz Slew Rate Differential Gain (DG) Differential Phase (DP) Group Delay Variation (D/DT) Crosstalk (channel - to - channel) Fall Time Rise Time 20% to 80%, VIN = 1V Step, NTSC & PAL DC coupled NTSC & PAL AC coupled NTSC & PAL DC coupled NTSC & PAL AC coupled f = 400KHz, 6.5MHz at 1MHz 2.0VSTEP, 80% to 20% 2.0VSTEP, 80% to 20% -0.1 -22 44 0.2 0.52 0.4 1.0 5.5 -64 36 38 RL = 150 RL = 150 4.5 9.0 Vs = +2.7 V to + 5.5 V VIN = 500mV, 60 6.8 58 7.8 POWER SUPPLY Operating Voltage Range Specifications subject to change without notice. 2 SGM9115 PACKAGE/ORDERING INFORMATION ORDER NUMBER PACKAGE DESCRIPTION TEMPERATURE RANGE PACKAGE OPTION MARKING INFORMATION SGM9115ZS/TR SGM9115XS/TR SO-8 SO-8 0 to +70 -40 to +125 Tape and Reel, 2500 Tape and Reel, 2500 SGM9115ZS SGM9115XS PIN CONFIGURATIONS (Top View) SGM9115 IN1 IN2 IN3 +VS 1 2 3 4 SO-8 8 7 6 5 OUT1 OUT2 OUT3 GND PIN DESCRIPTION PIN 1 2 3 4 5 6 7 8 NAME IN1 IN2 IN3 +VS GND OUT3 OUT2 OUT1 FUNCTION Video input, channel 1 Video input, channel 2 Video input, channel 3 Power supply Ground Filtered output, channel 3 Filtered output, channel 2 Filtered output, channel 1 ABSOLUTE MAXIMUM RATINGS Supply Voltage, V+ to V- ......................................... 7.5 V Input Voltage .......................... GND - 0.3 V to (+VS) +0.3V Storage Temperature Range..............-65 to +150 Junction Temperature ............................................. 160 Operating Temperature Range ........... -40 to +125 Power Dissipation, PD @ TA = 25 SO-8 .............................................................................0.8W Package Thermal Resistance SO-8, JA................................................................ 128/W Lead Temperature Range (Soldering 10 sec) ...................................................... 260 ESD Susceptibility HBM...........................................................................8000V MM...............................................................................400V NOTES 1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. CAUTION This integrated circuit can be damaged by ESD if you don't pay attention to ESD protection. Shengbang Micro-electronics recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. 3 SGM9115 TYPICAL PERFORMANCE CHARACTERISTICS At VS = +5.0V, TA = +25, RL = 150, all outputs AC coupled with 220F, unless otherwise noted. Frequency Response 270 180 3 0 Phase vs. Frequency Normalized Gain(dB) -3 -6 -9 -12 -15 0.01 Phase(degree) 90 0 -90 -180 -270 0.1 1 10 100 0.1 1 10 100 Frequency(MHz) Frequency(MHz) Large Signal Step Response 0.75 0.5 0.3 0.2 Small Signal Step Response Output Voltage(V/) 0.25 0 -0.25 -0.5 -0.75 -0.5 -0.4 -0.3 -0.2 -0.1 Output Voltage(V/) 0 0.1 0.2 0.3 0.4 0.5 0.1 0 -0.1 -0.2 -0.3 -0.5 -0.4 -0.3 -0.2 -0.1 Time (s) 0 0.1 0.2 0.3 0.4 0.5 Time (s) -40 -45 -50 -55 PSRR vs. Frequency(Bypass Caps) 0 -10 -20 PSRR vs. Frequency(No Bypass Caps) PSRR(dB) -60 -65 -70 -75 -80 -85 -90 0.01 0.1 1 10 100 PSRR(dB) -30 -40 -50 -60 -70 -80 0.01 0.1 1 10 100 Frequency(MHz) Frequency(MHz) 4 SGM9115 TYPICAL PERFORMANCE CHARACTERISTICS At VS = +5.0V, TA = +25, RL = 150, all outputs AC coupled with 220F, unless otherwise noted. Group Delay vs. Frequency 50 45 40 8 7.5 7 6.5 6 5.5 5 4.5 4 3.5 3 Quiescent Current vs. Supply Voltage No Load VIN = 500mV 35 30 25 20 15 10 0.01 Quiescent Current (mA) Group Delay (ns) 0.1 Frequency(MHz) 1 10 2 2.5 3 3.5 4 4.5 5 5.5 Supply Voltage(V) Output Voltage Swing to The Positive Rail vs. Output Current 5 Output Voltage Swing to The Negative Rail vs. Output Current 0.7 0.6 VIN = 0V -40 +25 +85 Output Voltage(v) Output Voltage(v) 60 80 100 4.5 0.5 0.4 0.3 0.2 0.1 4 +85 +25 3.5 -40 3 0 20 40 0 Output Current(mA) 0 20 40 60 80 100 Output Current(mA) Gain Error vs. Temperature 1 0.9 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -50 -25 0 25 50 75 100 125 0.8 12 11 10 9 8 7 6 5 4 3 2 -50 Quiescent Current vs. Temperature Quiescent Current (mA) Gain Error(%) -25 0 25 50 75 100 125 Temperature() Temperature() 5 SGM9115 Applications Information Functional Description SGM9115 operates from a single +2.5V to +5V supply. In application, SGM9115 is a fully integrated solution for filtering and buffering SDTV signals in front of video decoder or behind video encoder. For example, SGM9115 can replace three passive LC filters and three amplifier drivers at CVBS and S-video output side in set-top box and DVD player, this solution can help you save PCB size and production cost, it also improves video signal performance comparing with traditional design using discrete components. SGM9115 features a DC-coupled input buffer, 3-pole low-pass filter to eliminate out-of-band noise of video encoder, and a gain of +6dB in the output amplifier to drive 75 load. The AC or DC-coupled input buffer eliminates sync crush, droop, and field tilt. The output of SGM9115 also can be DC-coupled or AC-coupled. Typical Application Diagram The following schematic in Figure 3 is normally used for AC coupled output and DC-coupled input with DAC which has an output voltage range of 0V to 1.4V. AC coupled output offer slightly lower power dissipation and high ESD protection ability. The schematics in Figure 1 and Figure 2 are also popular in design. Figure 4 is a kind of special application in STB. +5V 0.1F or 0.01F 4 +VS CVBS1 75 2 1 IN1 OUT1 8 75 CVBS1 10F SGM9115 IN2 OUT2 7 75 Y S-Video 3 IN3 OUT3 GND 5 6 75 C Y 75 Input Considerations Besides AC coupling, the SGM9115 inputs also can be DC-coupled. In DC coupling application, No input coupling capacitors are needed because the amplitude of input video signal from DAC includes ground and extends up to 1.4V, then SGM9115 can be directly connected to the output of a single-supply, current-output DAC without any external bias network. Some time, if DAC's output level exceeds the range of 0V to 1.4V, or SGM9115 is driven by an unknown external source or a SCART switch which has its own clamping circuit, AC coupling is needed in such applications. S-Video C 75 Figure 1. DC Coupling Application Schematic +5V 0.1F or 0.01F 4 0.1F CVBS1 75 0.1F Y S-Video 75 0.1F C 75 3 6 75 GND 5 220F 2 +VS 1 IN1 OUT1 8 75 220F CVBS1 10F Output Considerations The SGM9115 outputs can be DC-coupled or AC-coupled. When 0V is input, the SGM9115 output voltage is 260mV typically. In DC coupling design, one 75 resistor is used to Connect SGM9115's output pin with external load directly, this serial back-termination resistor is used to match the impedance of the transmission line between SGM9115 and external load to cancel the signal reflection. The SGM9115 outputs can sink and source current allowing the device to be AC-coupled with external load, in AC coupling, 220F at least capacitor will be used in order to eliminate field tilt. SGM9115 IN2 OUT2 7 75 220F S-Video IN3 OUT3 C Y Power-Supply Bypassing and Layout Correct power supply bypassing is very important for optimizing video performance in design. One 0.1F and one 10F capacitors are always used to Bypass VCC pin of SGM9115, please place these two capacitors as close to the SGM9115 output pin as possible, a large ground plane is also needed to ensure optimum performance. The input and output termination resistors should be placed as close to the related pin of SGM9115 as possible to avoid performance degradation. The PCB traces at the output side should have 75 characteristic impedance in order to match the 75 characteristic impedance cable connecting external load. In design, please keep the board trace at the inputs and outputs of the SGM9115 as short as possible to minimize the parasitic stray capacitance and noise pickup. Figure 2. AC Coupling Application Schematic +5V 0.1F or 0.01F 4 +VS CVBS1 75 2 1 IN1 OUT1 8 75 220F CVBS1 10F SGM9115 IN2 OUT2 7 75 220F S-Video 3 IN3 OUT3 GND 5 6 75 220F C Y Y 75 S-Video C 75 Figure 3. Input DC Coupling and Output AC Coupling Application Schematic 6 SGM9115 0.1F or 0.01F 10F VCC 4 +VS to Loading 1 8 A 75 75 75 220F to Loading 2 220F to Loading 1 75 75 75 220F to Loading 2 220F to Loading 1 3 IN3 OUT3 GND 5 6 C 75 75 75 220F to Loading 2 220F The three ports of A ,B and C should be immediate as signal output pin in layout Y 1 IN1 OUT1 SGM9115 2 IN2 7 OUT2 B SOC Of STB Pb Pr Figure 4. Input DC Coupling and Output AC Coupling Application Schematic in STB 7 SGM9115 PACKAGE OUTLINE DIMENSIONS SO-8 D C Symbol L Dimensions In Millimeters Min Max 1.750 0.250 1.550 0.510 0.250 5.000 4.000 6.300 1.270 8 1.350 0.100 1.350 0.330 0.190 4.780 3.800 5.800 0.400 0 Dimensions In Inches Min 0.053 0.004 0.053 0.013 0.007 0.188 0.150 0.228 0.016 0 Max 0.069 0.010 0.061 0.020 0.010 0.197 0.157 0.248 0.050 8 A A1 E1 A2 B C E e D E E1 B A2 A1 e L 1.270TYP 0.050TYP A 8 SGM9115 REVISION HISTORY Location 11/06-- Data Sheet changed from preliminary to REV. A Changes to ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Page 06/07-- Data Sheet changed from REV. A to REV. B Adds applications information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Shengbang Microelectronics Co, Ltd Unit 3, ChuangYe Plaza No.5, TaiHu Northern Street, YingBin Road Centralized Industrial Park Harbin Development Zone Harbin, HeiLongJiang 150078 P.R. China Tel.: 86-451-84348461 Fax: 86-451-84308461 www.sg-micro.com 9 SGM9115 |
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