LT6205/LT6206/LT6207 Single/Dual/Quad Single Supply 3V, 100MHz Video Op Amps DESCRIPTION FEATURES n n n n n n n n n n n n 450V/μs Slew Rate 100MHz Gain Bandwidth Product Wide Supply Range 2.7V to 12.6V Output Swings Rail-to-Rail Input Common Mode Range Includes Ground High Output Drive: 50mA Channel Separation: 90dB at 10MHz Specified on 3V, 5V and ±5V Supplies Input Offset Voltage: 1mV Low Power Dissipation: 20mW per Amplifier on Single 5V Operating Temperature Range: –40°C to 125°C Low Profile (1mm) SOT-23 (ThinSOT™) Package n n n n These amplifiers maintain their performance for supplies from 2.7V to 12.6V and are specified at 3V, 5V and ±5V. The inputs can be driven beyond the supplies without damage or phase reversal of the output. Isolation between channels is high, over 90dB at 10MHz. The LT6205 is available in the 5-pin SOT-23, and the LT6206 is available in an 8-lead MSOP package with standard op amp pinouts. For compact layouts the quad LT6207 is available in the 16-pin SSOP package. These devices are specified over the commercial, industrial and automotive temperature ranges. APPLICATIONS n The LT®6205/LT6206/LT6207 are low cost single/dual/ quad voltage feedback amplifiers that feature 100MHz gain-bandwidth product, 450V/μs slew rate and 50mA output current. These amplifiers have an input range that includes ground and an output that swings within 60mV of either supply rail, making them well suited for single supply operation. Video Line Driver Automotive Displays RGB Amplifiers Coaxial Cable Drivers Low Voltage High Speed Signal Processing L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Baseband Video Splitter/Cable Driver 3.3V 499Ω Output Step Response 1μF VOUT 75Ω 499Ω VOUT1 8 LT6206 VIN 2 – 3 + 0V 75Ω 1 VIN 0V 75Ω 5 + 7 6 499Ω 20ns/DIV 620567 TA01b VOUT2 – 75Ω 4 499Ω VS = 3.3V VIN = 0.1V TO 1.1V f = 10MHz 75Ω F3dB z 50MHz IS b 25mA 620567 TA01a 620567fc 1 LT6205/LT6206/LT6207 ABSOLUTE MAXIMUM RATINGS (Note 1) Total Supply Voltage (V + to V–) ..............................12.6V Input Current .......................................................±10mA Input Voltage Range (Note 2)....................................±VS Output Short-Circuit Duration (Note 3) ........... Indefinite Pin Current While Exceeding Supplies (Note 9) ...±25mA Operating Temperature Range (Note 4) LT6205C/LT6206C/LT6207C, LT6205I/LT6206I/LT6207I .................... –40°C to 85°C LT6205H ........................................... –40°C to 125°C Specified Temperature Range (Note 4) LT6205C/LT6206C/LT6207C ..................... 0°C to 70°C LT6205I/LT6206I/LT6207I .................... –40°C to 85°C LT6205H ........................................... –40°C to 125°C Storage Temperature Range .................. –65°C to 150°C Maximum Junction Temperature .......................... 150°C Lead Temperature (Soldering, 10 sec) ................. 300°C PIN CONFIGURATION TOP VIEW OUT A 1 TOP VIEW TOP VIEW 5 V+ OUT 1 OUT A –IN A +IN A V– V– 2 + – +IN 3 4 –IN 1 2 3 4 – + – + 8 7 6 5 V+ OUT B –IN B +IN B MS8 PACKAGE 8-LEAD PLASTIC MSOP S5 PACKAGE 5-LEAD PLASTIC TSOT-23 TJMAX = 150°C, θJA = 250°C/W TJMAX = 150°C, θJA = 250°C/W 16 OUT D –IN A 2 – +IN A 3 + A D – 15 –IN D + 14 +IN D V+ 4 13 V– +IN B 5 + –IN B 6 – B C + 12 +IN C – 11 –IN C OUT B 7 NC 8 10 OUT C 9 NC GN PACKAGE 16-LEAD NARROW PLASTIC SSOP TJMAX = 150°C, θJA = 135°C/W ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LT6205CS5#PBF LT6205CS5#TRPBF LTAEM 5-Lead Plastic TSOT-23 0°C to 70°C LT6205IS5#PBF LT6205IS5#TRPBF LTAEM 5-Lead Plastic TSOT-23 –40°C to 85°C LT6205HS5#PBF LT6205HS5#TRPBF LTAEM 5-Lead Plastic TSOT-23 –40°C to 125°C LT6206CMS8#PBF LT6206CMS8#TRPBF LTH3 8-Lead Plastic MSOP 0°C to 70°C LT6206IMS8#PBF LT6206IMS8#TRPBF LTH4 8-Lead Plastic MSOP –40°C to 85°C LT6207CGN#PBF LT6207CGN#TRPBF 6207 16-Lead Narrow Plastic SSOP 0°C to 70°C LT6207IGN#PBF LT6207IGN#TRPBF 6207I 16-Lead Narrow Plastic SSOP –40°C to 85°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ 620567fc 2 LT6205/LT6206/LT6207 ELECTRICAL CHARACTERISTICS The l denotes specifications which apply over the specified temperature range, otherwise specifications are at TA = 25°C. VS = 3V, 0V; VS = 5V, 0V; VCM = VOUT = 1V, unless otherwise noted. LT6205C/LT6206C/LT6207C LT6205I/LT6206I/LT6207I SYMBOL PARAMETER VOS Input Offset Voltage IB IOS MIN CONDITIONS l TYP MAX 1 3.5 5 mV mV 1 3 4 mV mV UNITS Input Offset Voltage Match (Channel-to-Channel) (Note 5) l Input Offset Voltage Drift (Note 6) l 7 15 μV/°C Input Bias Current l 10 30 μA Input Offset Current l 0.6 3 μA Input Noise Voltage 0.1Hz to 10Hz 2 μVP-P en Input Noise Voltage Density f = 10kHz 9 nV/√Hz in Input Noise Current Density f = 10kHz 4 pA/√Hz 1 MΩ Input Resistance VCM = 0V to V+ – 2V Input Capacitance CMRR Common Mode Rejection Ratio VCM = 0V to V+ – 2V Input Voltage Range l 78 l 0 67 2 pF 90 dB V+ – 2 V Power Supply Rejection Ratio VS = 3V to 12V VCM = VOUT = 0.5V l Minimum Supply Voltage VCM = 0.5V l A VOL Large-Signal Voltage Gain VS = 5V, VO = 0.5V to 4.5V, RL = 1k VS = 5V, VO = 1V to 3V, RL = 150Ω VS = 3V, VO = 0.5V to 2.5V, RL = 1k l l l VOL Output Voltage Swing Low (Note 7) No Load, Input Overdrive = 30mV ISINK = 5mA VS = 5V, ISINK = 25mA VS = 3V, ISINK = 15mA l l l l 10 75 300 200 25 150 500 350 mV mV mV mV VOH Output Voltage Swing High (Note 7) No Load, Input Overdrive = 30mV ISOURCE = 5mA VS = 5V, ISOURCE = 25mA VS = 3V, ISOURCE = 15mA l l l l 60 150 650 300 100 250 1200 500 mV mV mV mV ISC Short-Circuit Current PSRR VS = 5V, Output Shorted to GND VS = 3V, Output Shorted to GND IS Supply Current per Amplifier GBW Gain Bandwidth Product f = 2MHz SR Slew Rate 75 dB 2.7 30 5 20 100 20 60 V V/mV V/mV V/mV l 35 20 60 mA mA l 30 20 50 mA mA 3.75 l l 65 5 5.75 mA mA 100 MHz VS = 5V, A V = 2, RF = RG = 1k VO = 1V to 4V, Measured from 1.5V to 3.5V 450 V/μs Channel Separation f = 10MHz 90 dB FPBW Full Power Bandwidth VOUT = 2VP-P (Note 8) 71 MHz ts Settling Time to 3% Settling Time to 1% VS = 5V, ΔVOUT = 2V, AV = –1, RL = 150Ω 15 25 ns ns Differential Gain Differential Phase VS = 5V, A V = 2, RL = 150Ω, Output Black Level = 1V VS = 5V, A V = 2, RL = 150Ω, Output Black Level = 1V 0.05 0.08 % Deg 620567fc 3 LT6205/LT6206/LT6207 ELECTRICAL CHARACTERISTICS The l denotes specifications which apply over the specified temperature range, otherwise specifications are at TA = 25°C. VS = ±5V; VCM = VOUT = 0V, unless otherwise noted. LT6205C/LT6206C/LT6207C LT6205I/LT6206I/LT6207I SYMBOL PARAMETER VOS Input Offset Voltage MIN CONDITIONS l TYP MAX 1 4.5 6 mV mV 1 3 4 mV mV UNITS Input Offset Voltage Match (Channel-to-Channel) (Note 5) l Input Offset Voltage Drift (Note 6) l 10 18 μV/°C IB Input Bias Current l 18 30 μA IOS Input Offset Current l 0.6 3 μA Input Noise Voltage 0.1Hz to 10Hz 2 en Input Noise Voltage Density f = 10kHz 9 nV/√Hz in Input Noise Current Density f = 10kHz 4 pA/√Hz Input Resistance VCM = –5V to 3V 1 MΩ 2 pF 90 dB Input Capacitance CMRR Common Mode Rejection Ratio VCM = –5V to 3V Input Voltage Range l 78 l –5 μVP-P 3 V PSRR Power Supply Rejection Ratio VS = ±2V to ±6V l 67 75 dB AVOL Large-Signal Voltage Gain VO = –4V to 4V, RL = 1k l 50 133 V/mV V/mV VO = –3V to 3V, RL = 150Ω l 7.5 20 Output Voltage Swing No Load, Input Overdrive = 30mV IOUT = ±5mA IOUT = ±25mA l l l ±4.88 ±4.75 ±3.8 ±4.92 ±4.85 ±4.35 ISC Short-Circuit Current Short to Ground l ±40 ±30 ±60 IS Supply Current per Amplifier GBW Gain Bandwidth Product f = 2MHz SR Slew Rate A V = –1, RL = 1k VO = –4V to 4V, Measured from –3V to 3V Channel Separation f = 10MHz FPBW Full Power Bandwidth VOUT = 8VP-P (Note 8) ts Settling Time to 3% Settling Time to 1% ΔVOUT = 2V, AV = –1, RL = 150Ω Differential Gain Differential Phase A V = 2, RL = 150Ω, Output Black Level = 1V A V = 2, RL = 150Ω, Output Black Level = 1V 4 l l V V V mA mA 5.6 6.5 mA mA 65 100 MHz 350 600 V/μs 90 dB 24 MHz 15 25 ns ns 0.05 0.08 % Deg 14 The l denotes specifications which apply over the full specified temperature range, –40°C ≤ TA ≤ 125°C, otherwise specifications are at TA = 25°C. VS = 3V, 0V; VS = 5V, 0V; VCM = VOUT = 1V, unless otherwise noted. LT6205H SYMBOL PARAMETER VOS Input Offset Voltage IB CONDITIONS MIN l UNITS TYP MAX 1 3.5 6 mV mV Input Offset Voltage Drift (Note 6) l 20 μV/°C Input Bias Current l 45 μA 620567fc 4 LT6205/LT6206/LT6207 ELECTRICAL CHARACTERISTICS The l denotes specifications which apply over the full specified temperature range, –40°C ≤ TA ≤ 125°C, otherwise specifications are at TA = 25°C. VS = 3V, 0V; VS = 5V, 0V; VCM = VOUT = 1V, unless otherwise noted. LT6205H SYMBOL IOS PARAMETER CONDITIONS MIN TYP l Input Offset Current MAX 5 UNITS μA Input Noise Voltage 0.1Hz to 10Hz 2 μVP-P en Input Noise Voltage Density f = 10kHz 9 nV/√Hz in Input Noise Current Density f = 10kHz 4 pA/√Hz 1 MΩ Input Resistance VCM = 0V to V+ – 2V Input Capacitance CMRR Common Mode Rejection Ratio 2 VCM = 0V to V+ – 2V Input Voltage Range l 72 l 0 62 pF dB V+ – 2 V Power Supply Rejection Ratio VS = 3V to 12V VCM = VOUT = 0.5V l Minimum Supply Voltage VCM = 0.5V l AVOL Large-Signal Voltage Gain VS = 5V, V0 = 0.5V to 4.5V, RL = 1k VS = 5V, V0 = 1V to 3V, RL = 150Ω VS = 3V, V0 = 0.5V to 2.5V, RL = 1k l l l VOL Output Voltage Swing Low (Note 7) No Load, Input Overdrive = 30mV ISINK = 5mA VS = 5V, ISINK = 25mA VS = 3V, ISINK = 15mA l l l l 40 200 600 400 mV mV mV mV VOH Output Voltage Swing High (Note 7) No Load, Input Overdrive = 30mV ISOURCE = 5mA VS = 5V, ISOURCE = 25mA VS = 3V, ISOURCE = 15mA l l l l 125 300 1400 600 mV mV mV mV ISC Short-Circuit Current PSRR VS = 5V, Output Shorted to GND VS = 3V, Output Shorted to GND dB 2.7 25 3.5 15 V V/mV V/mV V/mV l 35 20 60 mA mA l 30 15 50 mA mA IS Supply Current per Amplifier GBW Gain Bandwidth Product f = 2MHz SR Slew Rate VS = 5V, AV = 2, RF = RG = 1k VO = 1V to 4V, Measured from 1.5V to 3.5V 450 V/μs Channel Separation f = 10MHz 90 dB FPBW Full Power Bandwidth VOUT = 2VP-P (Note 8) 71 MHz ts Settling Time to 3% Settling Time to 1% VS = 5V, ΔVOUT = 2V, A V = –1, RL = 150Ω 15 25 ns ns Differential Gain Differential Phase VS = 5V, A V = 2, RL = 150Ω, Output Black Level = 1V VS = 5V, A V = 2, RL = 150Ω, Output Black Level = 1V 0.05 0.08 % Deg 3.75 l l 5 6.5 50 mA mA MHz The l denotes specifications which apply over the full specified temperature range, –40°C ≤ TA ≤ 125°C, otherwise specifications are at TA = 25°C. VS = ±5V; VCM = VOUT = 0V, unless otherwise noted. LT6205H SYMBOL PARAMETER VOS Input Offset Voltage Input Offset Voltage Drift (Note 6) CONDITIONS MIN l l UNITS TYP MAX 1.3 4.5 7 mV mV 25 μV/°C 620567fc 5 LT6205/LT6206/LT6207 ELECTRICAL CHARACTERISTICS The l denotes specifications which apply over the full specified temperature range, –40°C ≤ TA ≤ 125°C, otherwise specifications are at TA = 25°C. VS = ±5V; VCM = VOUT = 0V, unless otherwise noted. LT6205H SYMBOL PARAMETER CONDITIONS IB Input Bias Current l 50 μA IOS Input Offset Current l 5 μA MIN TYP MAX UNITS Input Noise Voltage 0.1Hz to 10Hz 2 μVP-P en Input Noise Voltage Density f = 10kHz 9 nV/√Hz in Input Noise Current Density f = 10kHz 4 pA/√Hz Input Resistance VCM = –5V to 3V 1 MΩ 2 pF Input Capacitance CMRR Common Mode Rejection Ratio l 72 l –5 VS = ±2V to ±6V l 62 VCM = –5V to 3V Input Voltage Range PSRR Power Supply Rejection Ratio A VOL Large-Signal Voltage Gain dB 3 V dB VO = –4V to 4V, RL = 1k l 40 V/mV VO = –3V to 3V, RL = 150Ω l 5 V/mV Output Voltage Swing No Load, Input Overdrive = 30mV IOUT = ±5mA IOUT = ±25mA l l l ±4.85 ±4.65 ±3.5 ISC Short-Circuit Current Short to Ground l ±40 ±20 IS Supply Current per Amplifier GBW Gain Bandwidth Product f = 2MHz SR Slew Rate A V = –1, RL = 1k VO = –4V to 4V, Measured from –3V to 3V Channel Separation f = 10MHz FPBW Full Power Bandwidth VOUT = 8VP-P (Note 8) ts Settling Time to 3% Settling Time to 1% ΔVOUT = 2V, AV = –1, RL = 150Ω Differential Gain Differential Phase A V = 2, RL = 150Ω, Output Black Level = 1V A V = 2, RL = 150Ω, Output Black Level = 1V Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The inputs are protected by back-to-back diodes. If the differential input voltage exceeds 1.4V, the input current should be limited to less than 10mA. Note 3: A heat sink may be required to keep the junction temperature below absolute maximum. This depends on the power supply voltage and how many amplifiers are shorted. Note 4: The LT6205C/LT6206C/LT6207C are guaranteed to meet specified performance from 0°C to 70°C and are designed, characterized and expected to meet specified performance from –40°C to 85°C but are not tested or QA sampled at these temperatures. The LT6205I/LT6206I/LT6207I are guaranteed to meet specified performance from –40°C to 85°C. The LT6205H is guaranteed to meet specified performance from –40°C to 125°C. ±60 4 l l V V V 50 mA mA 5.6 7.5 mA mA MHz 350 600 V/μs 90 dB 14 24 MHz 15 25 ns ns 0.05 0.08 % Deg Note 5: Matching parameters are the difference between the two amplifiers A and D and between B and C of the LT6207; between the two amplifiers of the LT6206. Note 6: This parameter is not 100% tested. Note 7: Output voltage swings are measured between the output and power supply rails. Note 8: Full power bandwidth is calculated from the slew rate measurement: FPBW = SR/2πVPEAK. Note 9: There are reverse biased ESD diodes on all inputs and outputs. If these pins are forced beyond either supply, unlimited current will flow through these diodes. If the current is transient in nature and limited to less than 25mA, no damage to the device will occur. 620567fc 6 LT6205/LT6206/LT6207 TYPICAL PERFORMANCE CHARACTERISTICS Supply Current per Amplifier vs Supply Voltage VOS Distribution 30 25 20 15 10 5 0 100 TA = 125°C 4 TA = 25°C 3 TA = –55°C 2 1 0 –3 –2 –1 0 1 2 INPUT OFFSET VOLTAGE (mV) 3 0 1 2 TA = 25°C 200 TA =125°C 0 –4 –5 –6 TA = 125°C –7 –8 TA = 25°C –9 –10 5 0 TA = 125°C 1 TA = 25°C 0.01 0.01 TA = –55°C 0.1 1 10 LOAD CURRENT (mA) 100 620567 G07 OUTPUT SATURATION VOLTAGE (V) OUTPUT SATURATION VOLTAGE (V) 10 0.1 –6 –7 –8 –9 –10 1 2 3 4 INPUT COMMON MODE VOLTAGE (V) –12 –50 5 –25 0 25 50 75 TEMPERATURE (°C) 100 VS = 5V, 0V VOD = 30mV Short-Circuit Current vs Temperature 75 TA = 125°C 1 TA = 25°C 0.1 0.01 0.01 125 620567 G06 Output Saturation Voltage vs Load Current (Output High) VS = 5V, 0V VOD = 30mV VS = 5V, 0V VCM = 1V 620567 G05 Output Saturation Voltage vs Load Current (Output Low) 5.0 –11 TA = –55°C 620567 G04 10 2.5 3.0 3.5 4.0 4.5 TOTAL SUPPLY VOLTAGE (V) Input Bias Current vs Temperature –4 –12 1 2 3 4 INPUT COMMON MODE VOLTAGE (V) 2.0 620567 G03 –5 –11 TA = –55°C 0 –500 VS = 5V, 0V –3 400 TA = 25°C –400 INPUT BIAS CURRENT (μA) VS = 5V, 0V INPUT BIAS CURRENT (μA) OFFSET VOLTAGE CHANGE (μV) –2 600 TA =125°C –300 Input Bias Current vs Input Common Mode Voltage 800 TA = –55°C –200 620567 G02 Change in Offset Voltage vs Input Common Mode Voltage 1000 –100 –600 1.5 3 4 5 6 7 8 9 10 11 12 TOTAL SUPPLY VOLTAGE (V) 620567 G01 0 OUTPUT SHORT-CIRCUIT CURRENT (mA) PERCENT OF UNITS (%) SUPPLY CURRENT PER AMPLIFIER (mA) VS = 5V, 0V VCM = 1V 35 Minimum Supply Voltage 5 CHANGE IN INPUT OFFSET VOLTAGE (μV) 40 TA = –55°C 0.1 1 10 LOAD CURRENT (mA) 100 620567 G08 70 SINKING 65 VS = 5V, 0V VCM = 1V SOURCING 60 SINKING 55 SOURCING 50 45 VS = 3V, 0V VCM = 1V 40 35 –50 –25 0 25 50 75 TEMPERATURE (°C) 100 125 620567 G09 620567fc 7 LT6205/LT6206/LT6207 TYPICAL PERFORMANCE CHARACTERISTICS Short-Circuit Current vs Temperature Open-Loop Gain Open-Loop Gain 500 VS = p5V VS = 5V, 0V VCM = 1V TA = 25°C 400 80 INPUT VOLTAGE (μV) 70 SOURCING 60 50 40 3O –50 100 RL = 1k –100 RL = 150Ω –200 0 25 50 75 TEMPERATURE (°C) 100 80 VS = 5V, 0V 60 40 20 0 25 16 20 15 10 5 1k 10k FREQUENCY (Hz) 10 8 6 4 2 1k 10k FREQUENCY (Hz) 100k Gain Bandwidth and Phase Margin vs Supply Voltage 70 140 PHASE 60 50 100 30 20 40 10 0 –10 60 20 VS = 3V, 0V TA = 25°C RL = 1k CL = 5pF –20 100k 0 PHASE (DEG) 80 VS = p5V 45 PHASE MARGIN 40 110 35 GAIN BANDWIDTH 105 PHASE MARGIN (DEG) VS = 3V, 0V 50 TA = 25°C RF = RG = 1k CL = 5pF 120 40 GAIN (dB) 12 620567 G15 Gain and Phase vs Frequency NOISE VOLTAGE (1μV/DIV) VS = 5V, 0V VCM = 1V TA = 25°C 620567 G14 0.1Hz to 10Hz Noise Voltage 620567 G16 14 0 100 100k 620567 G13 5 Input Noise Current Density vs Frequency VS = 5V, 0V VCM = 1V TA = 25°C 0 100 10 20 30 40 50 60 70 80 90 100 TIME AFTER POWER-UP (s) 4 620567 G12 INPUT NOISE CURRENT DENSITY (pA/Hz) 30 VS = ±5V TIME (2 SEC/DIV) 3 620567 G11 INPUT NOISE VOLTAGE DENSITY (nV/Hz) CHANGE IN OFFSET VOLTAGE (μV) –5 –4 –3 –2 –1 0 1 2 OUTPUT VOLTAGE (V) 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 OUTPUT VOLTAGE (V) Input Noise Voltage Density vs Frequency VS = 5V, 0V VCM = 1V TA = 25°C RL = 150Ω –200 –500 0 TA = 25°C 100 –100 –400 125 RL = 1k 0 –300 Warm Up Drift vs Time (LT6206) 120 100 –400 –500 –25 200 –300 620567 G10 0 300 200 0 VS = p5V TA = 25°C 400 INPUT VOLTAGE ( μV) 300 SINKING 500 GAIN BANDWIDTH (MHz) OUTPUT SHORT-CIRCUIT CURRENT (mA) 90 100 GAIN 1M VS = p5V 10M FREQUENCY (Hz) 100M -20 -40 500M 620567 G17 95 0 2 4 6 8 10 TOTAL SUPPLY VOLTAGE (V) 12 620567 G18 620567fc 8 LT6205/LT6206/LT6207 TYPICAL PERFORMANCE CHARACTERISTICS Gain Bandwidth and Phase Margin vs Temperature 50 700 45 35 VS = 3V, 0V VS = p5V 120 110 80 –50 –25 0 25 50 75 TEMPERATURE (°C) FALLING VS = p5V 550 RISING VS = 5V, 0V 500 FALLING VS = 5V, 0V 400 100 350 –50 125 GAIN (dB) 0 VS = 3V VCM = 1V OUTPUT IMPEDANCE (Ω) VS = p5V VCM = 0V 3 –9 0 25 50 75 TEMPERATURE (°C) 100 125 1M 10M FREQUENCY (Hz) 100M AV = 10 AV = 1 AV = 2 10 1 0.1 100k 500M 1M 10M FREQUENCY (Hz) 70 60 40 30 20 10 30 40 35 VS = 5V, 0V AV = 1 TA = 25°C 0 10k 90 80 70 1M 10M FREQUENCY (Hz) 100M 1G 620567 G25 100M RS = 10Ω, RL = d 25 20 RS = 20Ω, RL = d 15 60 10 50 5 40 100k 1M 10M FREQUENCY (Hz) 30 20 10 100k Series Output Resistor vs Capacitive Load OVERSHOOT (%) 40 –PSRR 620567 G24 VS = p5V LT6206 CH A-B 110 LT6207 CH A-D, CH B-C T = 25°C 100 A 80 50 +PSRR 50 0 10k 500M 120 VOLTAGE GAIN (dB) COMMON MODE REJECTION RATIO (dB) 100M VS = 5V, 0V TA = 25°C 80 620567 G23 VS = p5V TA = 25°C 60 5 620567 G21 Channel Separation vs Frequency 70 4 90 100 Common Mode Rejection Ratio vs Frequency 90 3 Power Supply Rejection Ratio vs Frequency VS = 5V, 0V TA = 25°C 620567 G22 100 2 GAIN (AV) –12 –15 100k FALLING 500 400 –25 POWER SUPPLY REJECTION RATIO (dB) 1000 –6 550 Output Impedance vs Frequency 15 –3 RISING 600 620567 G20 Closed-Loop Gain vs Frequency 6 650 450 620567 G19 TA = 25°C 12 CL = 5pF A = +1 9 V VS = p5V VO = –4V to 4V RL = 1k TA = 25°C 700 450 GAIN BANDWIDTH 90 RISING VS = p5V 600 VS = 3V, 0V 100 AV = –1 RG = RF = 1k RL = 1k 650 SLEW RATE (V/μs) 40 PHASE MARGIN Slew Rate vs Closed-Loop Gain 750 SLEW RATE (V/μs) VS = p5V 750 PHASE MARGIN (DEG) GAIN BANDWIDTH (MHz) RL = 1k CL = 5pF Slew Rate vs Temperature 55 RL = RS = 50Ω 0 1M 10M FREQUENCY (Hz) 100M 620567 G26 10 100 CAPACITIVE LOAD (pF) 1000 620567 G27 620567fc 9 LT6205/LT6206/LT6207 TYPICAL PERFORMANCE CHARACTERISTICS Series Output Resistor vs Capacitive Load VS = 5V, 0V AV = 2 TA = 25°C 9 RS = 10Ω, RL = d OVERSHOOT (%) 30 25 20 RS = 20Ω, RL = d 15 10 RL = RS = 50Ω 5 0 100 CAPACITIVE LOAD (pF) AV = –1 8 6 5 4 3 2 VS = p5V TA = 25°C HD2, HD3 < –30dBc –70 RL = 1k, 2ND RL = 150Ω, 2ND RL = 150Ω, 3RD –80 RL = 1k, 3RD 1 10 FREQUENCY (MHz) 100 –100 0.01 AV = +1 VO = 2VP-P VS = p5V –40 RL = 150Ω, 3RD –50 0.1 1 FREQUENCY (MHz) –60 RL = 150Ω, 2ND –70 AV = +2 VO = 2VP-P VS = p5V RL = 150Ω, 3RD –50 RL = 150Ω, 2ND –60 –70 –80 –90 RL = 1k, 2ND RL = 1k, 3RD 10 10 Distortion vs Frequency –90 RL = 1k, 3RD 0.1 1 FREQUENCY (MHz) 620567 G31 –30 –80 –90 RL = 150Ω, 2ND –100 0.01 DISTORTION (dB) –40 DISTORTION (dB) DISTORTION (dB) AV = +2 VO = 2VP-P VS = 5V, 0V –60 RL = 150Ω, 3RD –70 Distortion vs Frequency –30 –50 –60 620567 G30 Distortion vs Frequency –40 RL = 1k, 2ND –50 –90 620567 G28 –30 AV = +1 VO = 2VP-P VS = 5V, 0V –80 0 0.1 1000 –40 AV = 2 7 1 10 –30 DISTORTION (dB) 35 Distortion vs Frequency 10 OUTPUT VOLTAGE SWING (VP-P) 40 Maximum Undistorted Output Signal vs Frequency RL = 1k, 2ND –100 0.01 0.1 1 FREQUENCY (MHz) 620567 G32 10 –100 0.01 0.1 1 FREQUENCY (MHz) 10 620567 G34 620567 G33 Large Signal Response VS = 5V, 0V RL = 1k, 3RD 500mV/DIV 500mV/DIV Small Signal Response VS = 5V, 0V 2.5V 0V VS = 5V, 0V AV = 1 RL = 150Ω 50ns/DIV 620567 G35 VS = 5V, 0V AV = 1 RL = 150Ω 50ns/DIV 620567 G36 620567fc 10 LT6205/LT6206/LT6207 TYPICAL PERFORMANCE CHARACTERISTICS 620567 G37 50ns/DIV VS = ±5V AV = 1 RL = 150Ω 0V 0V VOUT (2V/DIV 0V Output-Overdrive Recovery VIN (1V/DIV Small Signal Response VS = ±5V 50mV/DIV 1V/DIV Large Signal Response VS = ±5V 620567 G38 50ns/DIV VS = ±5V AV = 1 RL = 150Ω 0V 100ns/DIV VS = 5V, 0V AV = 2 620567 G39 APPLICATIONS INFORMATION V+ I1 I2 R2 I3 R3 Q13 Q9 Q2 V+ Q5 CM V+ R1 RIN 150Ω DESD1 Q3 Q10 Q7 Q1 +IN DESD2 D1 D3 D2 D4 Q4 DESD5 Q6 COMPLEMENTARY DRIVE GENERATOR Q8 OUT DESD6 V– Q12 Q11 V– V+ RIN 150Ω DESD3 –IN Q14 I4 R4 R5 V– DESD4 620567 F01 V– Figure 1. Simplified Schematic 620567fc 11 LT6205/LT6206/LT6207 APPLICATIONS INFORMATION Amplifier Characteristics Figure 1 shows a simplified schematic of the LT6205/ LT6206/LT6207. The input stage consists of transistors Q1 to Q8 and resistor R1. This topology allows for high slew rates at low supply voltages. The input common mode range extends from ground to typically 1.75V from VCC, and is limited by 2 VBEs plus a saturation voltage of a current source. There are back-to-back series diodes, D1 to D4, across the + and – inputs of each amplifier to limit the differential voltage to ±1.4V. RIN limits the current through these diodes if the input differential voltage exceeds ±1.4V. The input stage drives the degeneration resistors of PNP and NPN current mirrors, Q9 to Q12, which convert the differential signals into a single-ended output. The complementary drive generator supplies current to the output transistors that swing from rail-to-rail. The current generated through R1, divided by the capacitor CM, determines the slew rate. Note that this current, and hence the slew rate, are proportional to the magnitude of the input step. The input step equals the output step divided by the closed loop gain. The highest slew rates are therefore obtained in the lowest gain configurations. The Typical Performance Characteristics curve of Slew Rate vs Closed-Loop Gain shows the details. ESD The LT6205/LT6206/LT6207 have reverse-biased ESD protection diodes on all inputs and outputs as shown in Figure 1. If these pins are forced beyond either supply unlimited current will flow through these diodes. If the current is transient, and limited to 25mA or less, no damage to the device will occur. Layout and Passive Components With a gain bandwidth product of 100MHz and a slew rate of 450V/μs the LT6205/LT6206/LT6207 require special attention to board layout and supply bypassing. Use a ground plane, short lead lengths and RF quality low ESR supply bypass capacitors. The positive supply pin should be bypassed with a small capacitor (typically 0.01μF to 0.1μF) within 0.25 inches of the pin. When driving heavy loads, an additional 4.7μF electrolytic capacitor should be used. When using split supplies, the same is true for the negative supply pin. For optimum performance all feedback components and bypass capacitors should be contained in a 0.5 inch by 0.5 inch area. This helps ensure minimal stray capacitances. The parallel combination of the feedback resistor and gain setting resistor on the inverting input can combine with the input capacitance to form a pole which can degrade stability. In general, use feedback resistors of 1k or less. Capacitive Load The LT6205/LT6206/LT6207 are optimized for wide bandwidth video applications. They can drive a capacitive load of 20pF in a unity-gain configuration. When driving a larger capacitive load, a resistor of 10Ω to 50Ω should be connected between the output and the capacitive load to avoid ringing or oscillation. The feedback should still be taken from the output pin so that the resistor will isolate the capacitive load and ensure stability. The Typical Performance Characteristics curves show the output overshoot when driving a capacitive load with different series resistors. Video Signal Characteristics Composite video is the most commonly used signal in broadcast grade products and includes luma (or luminance, the intensity information), chroma (the colorimetry information) and sync (vertical and horizontal raster timing) elements combined into a single signal, NTSC and PAL being the common formats. Component video for entertainment systems include separate signal(s) for the luma and chroma (i.e., Y/C or YPbPr) with sync generally applied to the luma channel (Y signal). In some instances, native RGB signals (separate intensity information for each primary color: red, green, blue) will have sync included as well. All the signal types that include sync are electrically similar from a voltage-swing standpoint, though various timing and bandwidth relationships exist depending on the applicable standard. The typical video waveforms that include sync (including full composite) are specified to have nominal 1VP-P amplitude. The lower 0.3V is reserved for sync tips that carry timing information, and by being at a lower potential than all the other information, represents blacker-than620567fc 12 LT6205/LT6206/LT6207 APPLICATIONS INFORMATION black intensity, thereby causing scan retrace activity to be invisible on a CRT. The black level of the waveform is at (or set up very slightly above) the upper limit of the sync information. Waveform content above the black level is intensity information, with peak brightness represented at the maximum signal level. In the case of composite video, the modulated color subcarrier is superimposed on the waveform, but the dynamics remain inside the 1VP-P limit (a notable exception is the chroma ramp used for differential-gain and differential-phase measurements, which can reach 1.15VP-P). DC-Coupled Video Amplifier Considerations Typically video amplifiers drive cables that are series terminated (back-terminated) at the source and load-terminated at the destination with resistances equal to the cable characteristic impedance, Z0 (usually 75Ω). This configuration forms a 2:1 resistor divider in the cabling that must be accounted for in the driver amplifier by delivering 2VP-P output into an effective 2 • Z0 load (e.g., 150Ω). Driving the cable can require more than 13mA while the output is approaching the saturation limits of the amplifier output. The absolute minimum supply is: VMIN = 2 + VOH +VOL. For example, the LT6206 dual operating on 3.3V as shown on the front page of this data sheet, with exceptionally low VOH ≤ 0.5V and VOL ≤ 0.35V, provides a design margin of 0.45V. The design margin must be large enough to include supply variations and DC bias accuracy for the DC-coupled video input. Handling AC-Coupled Video Signals AC-coupled video inputs are intrinsically more difficult to handle than those with DC-coupling because the average signal voltage of the video waveform is effected by the picture content, meaning that the black level at the amplifier wanders with scene brightness. The wander is measured as 0.56V for a 1VP-P NTSC waveform changing from black field to white field and vice-versa, so an additional 1.12V allowance must be made in the amplifier supply (assuming gain of 2, so VMIN = 3.12 + VOH +VOL). For example, an LT6205 operating on 5V has a conservative design margin of 1.03V. The amplifier output (for gain of 2) must swing +1.47V to –1.65V around the DC-operating point, so the biasing circuitry needs to be designed accordingly for optimal fidelity. Clamped AC-Input Cable Driver A popular method of further minimizing supply requirements with AC-coupling is to employ a simple clamping scheme, as shown in Figure 2. In this circuit, the LT6205 operates from 3.3V by having the sync tips control the charge on the coupling capacitor C1, thereby reducing the black level input wander to ≈ 0.07V. The only minor drawback to this circuit is the slight sync tip compression (≈ 0.025V at input) due to the diode conduction current, though the picture content remains full fidelity. This circuit has nearly the design margin of its DC-coupled counterpart, at 0.31V (for this circuit, VMIN = 2.14 + VOH +VOL). The clamp diode anode bias is selected to set the sync tip output voltage at or slightly above VOL. YPbPr to RGB Component Video Converter The back page application uses the LT6207 quad to implement a minimum amplifier count topology to transcode consumer component video into RGB. In this circuit, signals only pass through one active stage from any input to any output, with passive additions being performed by the cable back-termination resistors. The compromise in using passive output addition is that the amplifier outputs must be twice as large as that of a conventional cable driver. The Y-channel section also has the demanding requirement that it single-handedly drives all three outputs to full brightness during times of white content, so a helper current source is used to assure unclipped video when operating from ±5V supplies. This circuit maps sync-on-Y to sync on all the RGB channels, and for best results should have input black levels at 0V nominal to prevent clipping. 620567fc 13 LT6205/LT6206/LT6207 TYPICAL APPLICATION 3.3V 1k 0.1μF 75Ω 1k VIDEO OUT 2.4k 4 C1 4.7μF – 75Ω 5 LT6205 COMPOSITE VIDEO IN 1VP-P 3 + 1 2 BAT54 10k IS b 19mA C2 4.7μF 470Ω 620567 TA02 Figure 2. Clamped AC-Input Video Cable Driver 620567fc 14 LT6205/LT6206/LT6207 PACKAGE DESCRIPTION S5 Package 5-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1635) 0.62 MAX 0.95 REF 2.90 BSC (NOTE 4) 1.22 REF 1.4 MIN 3.85 MAX 2.62 REF 2.80 BSC 1.50 – 1.75 (NOTE 4) PIN ONE RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.30 – 0.45 TYP 5 PLCS (NOTE 3) 0.95 BSC 0.80 – 0.90 0.20 BSC 0.01 – 0.10 1.00 MAX DATUM ‘A’ 0.30 – 0.50 REF 0.09 – 0.20 (NOTE 3) NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 1.90 BSC S5 TSOT-23 0302 620567fc 15 LT6205/LT6206/LT6207 PACKAGE DESCRIPTION MS8 Package 8-Lead Plastic MSOP (Reference LTC DWG # 05-08-1660) 0.889 ± 0.127 (.035 ± .005) 5.23 (.206) MIN 3.20 – 3.45 (.126 – .136) 3.00 ± 0.102 (.118 ± .004) (NOTE 3) 0.65 (.0256) BSC 0.42 ± 0.038 (.0165 ± .0015) TYP 8 0.52 (.0205) REF 7 6 5 RECOMMENDED SOLDER PAD LAYOUT 3.00 ± 0.102 (.118 ± .004) (NOTE 4) 4.90 ± 0.152 (.193 ± .006) DETAIL “A” 0.254 (.010) 0° – 6° TYP GAUGE PLANE 1 0.53 ± 0.152 (.021 ± .006) 2 3 4 1.10 (.043) MAX DETAIL “A” 0.86 (.034) REF 0.18 (.007) SEATING PLANE 0.22 – 0.38 (.009 – .015) TYP 0.1016 ± 0.0508 (.004 ± .002) 0.65 (.0256) BSC MSOP (MS8) 0307 REV F NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX GN Package 16-Lead Plastic SSOP (Narrow .150 Inch) (Reference LTC DWG # 05-08-1641) .189 – .196* (4.801 – 4.978) .045 ±.005 16 15 14 13 12 11 10 9 .254 MIN .009 (0.229) REF .150 – .165 .229 – .244 (5.817 – 6.198) .0165 ± .0015 .150 – .157** (3.810 – 3.988) .0250 BSC RECOMMENDED SOLDER PAD LAYOUT 1 .015 ± .004 × 45° (0.38 ± 0.10) .007 – .0098 (0.178 – 0.249) .0532 – .0688 (1.35 – 1.75) 2 3 4 5 6 7 8 .004 – .0098 (0.102 – 0.249) 0° – 8° TYP .016 – .050 (0.406 – 1.270) NOTE: 1. CONTROLLING DIMENSION: INCHES INCHES 2. DIMENSIONS ARE IN (MILLIMETERS) .008 – .012 (0.203 – 0.305) TYP .0250 (0.635) BSC GN16 (SSOP) 0204 3. DRAWING NOT TO SCALE *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 620567fc 16 LT6205/LT6206/LT6207 REVISION HISTORY (Revision history begins at Rev C) REV DATE DESCRIPTION PAGE NUMBER C 3/10 C Grade Specified Temperature Range Changed in the Order Information Section 2 620567fc Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 17 LT6205/LT6206/LT6207 TYPICAL APPLICATION YPBPR to RGB Converter 5V 1μF 36Ω CMPD6001S FMMT3906 150Ω R 4.7k 165Ω 499Ω 4 1 2 – – 75Ω 150Ω 16 15 499Ω 150Ω 3 Y + 75Ω B 107Ω 150Ω 75Ω LT6207 5 6 365Ω 499Ω PB 95.3Ω + 14 + + – – 12 80.6Ω 11 499Ω 10 7 150Ω 13 174Ω 150Ω G 75Ω PR 1μF 133Ω F3dB z 40MHz IS b 60mA BLACK LEVELS z 0V –5V R = Y + 1.4 • PR B = Y + 1.8 • PB G = Y – 0.34 • PB – 0.71 • PR 620567 TA03 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LT1253/LT1254 Low Cost Dual and Quad Video Amplifiers –3dB Bandwidth = 90MHz, Current Feedback LT1395/LT1396/LT1397 Single Dual Quad 400MHz Current Feedback Amplifiers 0.1dB Flatness to 100MHz, 80mA Output Drive LT1675 RGB Multiplexer with Current Feedback Amplifiers –3dB Bandwidth = 250MHz, 100MHz Pixel Switching LT1809/LT1810 Single/Dual, 180MHz, Rail-to-Rail Input and Output Amplifiers 350V/μs Slew Rate, Shutdown, Low Distortion –90dBc at 5MHz LT6550/LT6551 3.3V Triple and Quad Video Amplifiers Internal Gain of 2, 110MHz –3dB Bandwidth, Input Common Modes to Ground LT6552 3.3V Single Supply Video Difference Amplifier Differential or Single-Ended Gain Block, 600V/μs Slew Rate, Input Common Modes to Ground 620567fc 18 Linear Technology Corporation LT 0310 REV C • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com © LINEAR TECHNOLOGY CORPORATION 2003