RT9133A/B Rail-to-Rail Operational Amplifier General Description Features The RT9133A/B consist low cost, high slew rates, singlesupply rail-to-rail input and output operation amplifiers. The RT9133A contains a single amplifier and RT9133B contains two amplifiers. The RT9133A/B have high slew rates (12V/us), 35mA continuous output current, 120mA peak output current and offset voltage below 10mV. The RT9133A/B are ideal for Thin Film Transistor Liquid Crystal Displays (TFT-LCD). z Rail-to-Rail Output Swing z Supply Voltage : 4.5V to 15V Continuous Output Current : 35mA Peak Output Current : 120mA High Slew Rate : 12V/us Offset Voltage : 10mV RoHS Compliant and 100% Lead (Pb)-Free The RT9133A is available in SOT-23-5 and WDFN-6L 2x2 z z z z z Applications TFT-LCD Gamma / VCOM Buffer Portable Electronic Product Communications Product packages. The RT9133B is available in MSOP-8 package. The RT9133A/B are specified for operation over the full −40°C to +85°C temperature range. z Ordering Information Pin Configurations z RT9133A/B (TOP VIEW) Package Type QW : WDFN-6L 2x2 (Single only) B : SOT-23-5 (Single only) F : MSOP-8 (Dual only) Lead Plating System P : Pb Free G : Green (Halogen Free and Pb Free) VS+ VIN- 5 4 2 SOT-23-5 A : Single Amplifier B : Dual Amplifier Note : VSNC VS+ Richtek products are : ` RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. ` 3 VOUT VS- VIN+ 1 2 3 VS- z 7 6 5 4 VIN+ VINVOUT WDFN-6L 2x2 Suitable for use in SnPb or Pb-free soldering processes. Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area. DS9133A/B-07 April 2011 VOUTA VINAVINA+ VS- 8 2 7 3 6 4 5 VS+ VOUTB VINBVINB+ MSOP-8 www.richtek.com 1 RT9133A/B Function Block Diagram VOUTA VS+ VINVIN+ - VOUT + VOUTB VINAVINA+ VS- - - + + VS- VINBVINB+ VS+ RT9133A RT9133B Functional Pin Description Single SOT-23-5 Pin No. WDFN-6L 2x2 Pin Name Pin Function 1 4 VOUT Amplifier Output. -- 2 NC No Internal Connection. 2 1, 7 (Exposed Pad) VS- Negative Power Supply. 3 6 VIN+ Amplifier Non-Inverting Input. 4 5 VIN- Amplifier Inverting Input. 5 3 VS+ Positive Power Supply. Dual Pin No. Pin Name Pin Function 1 VOUTA Amplifier A Output. 2 VINA- Amplifier A Inverting Input. 3 VINA+ Amplifier A Non-Inverting Input. 4 VS- Negative Power Supply. 5 VINB+ Amplifier B Non-Inverting Input. 6 VINB- Amplifier B Inverting Input. 7 VOUTB Amplifier B Output. 8 VS+ Positive Power Supply. www.richtek.com 2 DS9133A/B-07 April 2011 RT9133A/B Absolute Maximum Ratings z z z z z z z (Note 1) Supply Voltage ------------------------------------------------------------------------------------------------------- 17V Power Dissipation, PD @ TA = 25°C SOT-23-5 --------------------------------------------------------------------------------------------------------------- 500mW WDFN-6L 2x2 --------------------------------------------------------------------------------------------------------- 758mW MSOP-8 --------------------------------------------------------------------------------------------------------------- 781mW Package Thermal Resistance (Note 2) SOT-23-5, θJA --------------------------------------------------------------------------------------------------------- 250°C/W WDFN-6L 2x2, θJA --------------------------------------------------------------------------------------------------- 165°C/W MSOP-8, θJA ---------------------------------------------------------------------------------------------------------- 160°C/W Differential Input Voltage -------------------------------------------------------------------------------------------- VS Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------- 260°C Storage Temperature Range --------------------------------------------------------------------------------------- −65°C to +150°C ESD Susceptibility (Note 3) HBM (Human Body Mode) ----------------------------------------------------------------------------------------- 2kV MM (Machine Mode) ------------------------------------------------------------------------------------------------ 200V Recommended Operating Conditions z z z (Note 4) Input Voltage ---------------------------------------------------------------------------------------------------------- −0.5V to Vs+0.5V Junction Temperature Range -------------------------------------------------------------------------------------- −65°C to +150°C Ambient Temperature Range -------------------------------------------------------------------------------------- −40°C to +85°C Note 1. Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. Note 2. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board (single layer, 1S) of JEDEC 51-3 thermal measurement standard. Note 3. Devices are ESD sensitive. Handling precaution is recommended. Note 4. The device is not guaranteed to function outside its operating conditions. DS9133A/B-07 April 2011 www.richtek.com 3 RT9133A/B Electrical Characteristics (VS+=+5V, VS- = -5V, RL = 10kΩ and CL = 10pF to 0V, TA =25°C, unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Input Characteristics Input Offset Voltage VOS VCM = 0 -- 2 15 mV Average Offset Voltage Drift ΔV OS /ΔT −40°C≦T A≦85°C -- 5 -- uV/°C Input Bias Current IB VCM = 0 -- 2 50 nA Input Impedance RIN -- 1 -- GΩ Input Capacitance CIN -- 1.35 -- pF Common-Mode Input Range CMIR -5.5 -- +5.5 V Common-Mode Rejection Ratio CMRR For VIN from –5.5V to +5.5V 50 80 -- dB Open-Loop Gain AVOL −4.5V≦V OUT≦+4.5V 75 95 -- dB Output swing Low VOL IL = -5mA -- -4.92 -4.85 V Output swing High VOH IL = +5mA 4.85 4.92 -- V Continuous V COM Buffer Output current IOC -- ±35 -- mA Peak V COM Buffer Output current IPC -- ±120 -- mA Supply Voltage VS 4.5 -- 15 V Power Supply Rejection Ratio PSRR VS is moved from ±2.25V to ±7.75V 60 70 -- dB Supply Current/Amplifier ISY No Load -- 500 750 uA Slew Rate(Note) SR −4.0V≦V OUT≦+4.0V, 20% to 80% -- 12 -- V/us Setting to ±0.1% (A V=+1) tS (A V = +1), VOUT = 2V step -- 500 -- ns -3dB Bandwidth BW RL = 10kΩ, CL =10 pF -- 12 -- MHz Gain-Bandwidth Product GBWP RL = 10kΩ, CL =10 pF -- 5 -- MHz Phase Margin PM RL = 10kΩ, CL =10 pF -- 50 -- ° Channel Separation CS f = 5MHz -- 75 -- dB Output Characteristics Power Supply Dynamic Performance Note: Slew rate is measured on rising and falling edges. www.richtek.com 4 DS9133A/B-07 April 2011 RT9133A/B (VS+=+2.5V, VS- = -2.5V, RL = 10kΩ and CL = 10pF to 2.5V, TA =25°C, unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Input Characteristics Input Offset Voltage VOS VCM = 2.5V -- 2 15 mV Average Offset Voltage Drift ΔV OS/ΔT −40°C≦TA ≦ 85°C -- 5 -- uV/°C Input Bias Current IB VCM = 2.5V -- 2 50 nA Input Impedance RIN -- 1 -- GΩ Input Capacitance CIN -- 1.35 -- pF Common-Mode Input Range CMIR −0.5 -- +5.5 V Common-Mode Rejection Ratio CMRR For VIN from –0.5V to +5.5V 45 65 -- dB Open-Loop Gain AVOL 0.5V≦VOUT≦+4.5V 75 95 -- dB Output swing Low VOL IL = −5mA -- −2.42 −2.35 mV Output swing High VOH IL = +5mA 2.35 2.42 -- V Continuous V COM Buffer Output current IOC -- ±35 -- mA IPC -- ±90 -- mA Output Characteristics Peak V COM Buffer Output current Power Supply Power Supply Rejection Ratio PSRR VS is moved from ±2.25V to ±7.75V 45 70 -- dB Supply Current/Amplifier ISY No Load -- 500 750 uA Slew Rate(Note) SR −4V≦VOUT≦+4V, 20% to 80% -- 12 -- V/us Setting to ±0.1% (A V = +1) tS (AV = +1), V OUT = 2V step -- 500 -- ns -3dB Bandwidth BW RL = 10kΩ, CL =10 pF -- 12 -- MHz Gain-Bandwidth Product GBWP RL = 10kΩ, CL =10 pF -- 5 -- MHz Phase Margin PM RL = 10kΩ, CL =10 pF -- 50 -- ° Channel Separation CS f = 5MHz -- 75 -- dB Dynamic Performance Note: Slew rate is measured on rising and falling edges. DS9133A/B-07 April 2011 www.richtek.com 5 RT9133A/B Typical Operating Characteristics Quescent Current vs. Supply Voltage Quisient current vs. Temperature 0.52 0.56 VS = ±5V 0.54 0.5 Quisient current (mA) Quescent Current (mA) TA = 25°C 0.48 0.46 0.44 0.52 0.5 0.48 0.46 0.44 0.42 0.42 0.4 0.4 4 5 6 7 8 9 10 11 12 13 14 15 -50 -30 -10 Output High Voltage vs. Temperature 4.94 4.92 4.9 4.88 4.86 4.84 4.82 90 110 130 150 VS = ±5V IOUT = −5mA -4.885 -4.89 -4.895 -4.9 -4.905 -4.91 -4.915 -4.92 -4.925 4.8 -4.93 -50 -30 -10 10 30 50 70 90 110 130 150 -50 -30 -10 Temperature (°C) Magnitude (Normalized) (dB) 12 11.5 11 10.5 10 9.5 9 -30 -10 10 30 50 70 Temperature (°C) www.richtek.com 6 30 50 70 90 110 130 150 Frequency Response for Various RL 5 VS = ±5V -50 10 Temperature (°C) Slew Rate vs. Temperature Slew Rate (V/us) 70 Output Low Voltage vs. Temperature Output Low Voltage (V) Output High Voltage (V) 4.96 12.5 50 -4.88 VS = ±5V IOUT = 5mA 4.98 30 Temperature (°C) Supply Voltage (V) 5 10 90 110 130 150 VS = ±5V CL = 10pF AV = 1 RL = 10kΩ 0 RL = 1kΩ RL = 560Ω -5 RL = 150Ω -10 -15 100k 100000 1M 1000000 10M 10000000 100M 100000000 Frequency (Hz) DS9133A/B-07 April 2011 RT9133A/B 10 PSRR vs. Frequency Frequency Response for Various CL 80 VS = ±5V RL = 10kΩ AV = 1 PSRR+ 60 PSRRCL = 12pF 0 CL = 50pF CL = 1000pF CL = 100pF -10 -20 PSRR (dB) Magnitude (Normalized) (dB)1 20 40 20 0 -20 -30 100k 100000 VS = ±5V TA = 25°C -40 1M 1000000 10M 10000000 100M 100000000 100 1000 1k 10000 10k 100000 100k 1000000 1M Frequency (Hz) Frequency (Hz) Slew Transient Response Slew Transient Response VS = ±5V AV = 1 VS = ±5V AV = 1 (1V/Div) (2V/Div) VOUT V+ (1V/Div) VOUT (2V/Div) V+ Time (250ns/Div) Time (250ns/Div) Small Signal Transient Response Large Signal Transient Response VS = ±5V AV = 1 VS = ±7V AV = 1 V+ V+ (100mV/Div) (2V/Div) (2V/Div) VOUT VOUT (100mV/Div) Time (1μs/Div) DS9133A/B-07 April 2011 Time (250ns/Div) www.richtek.com 7 RT9133A/B CMRR vs. Frequency 80 70 CMRR (dB) 60 50 40 30 20 10 VS = ±5V TA = 25°C 0 100 100 1k 1000 10k 10000 100k 100000 1M 10M 1000000 10000000 Frequency (Hz) www.richtek.com 8 DS9133A/B-07 April 2011 RT9133A/B Applications Information The RT9133A/B has high performance to drive large load for different application. High slew rates, rail-to-rail input and output capability and low power consumption are the features to make the RT9133A/B ideal for LCD applications. The RT9133A/B also has wide bandwidth and phase margin to drive a load of 10kΩ and 10pF. Operating Voltage junction to ambient. The maximum power dissipation can be calculated by following formula: PD(MAX) = ( TJ(MAX) - TA ) /θJA Where TJ(MAX): The maximum operation junction temperature 150°C TA : The ambient temperature. The RT9133A/B is specified with single supply voltage from 5V to 15V. According to the electrical characteristics, the total supply voltage range is guaranteed from 4.5V to 15V. To refer the typical operational curves can get stable specifications in wide range of temperature and operating voltage. Input Voltage (5V/Div) The output swing of the RT9133A/B typically extends to within 80mV of positive/negative supply rails with 5mA load current source/sink. Decreasing the load current will get output swing even closer to the supply rails. Figure 1 shows the rail-to-rail input and output waveforms in the unit gain configuration without load current. The supply rails are +/-5V. Applying an input 10Vp_p sinusoidal waveform results in a 9.8Vp_p output voltage as shown in Figure 1. θJA : The junction to ambient thermal resistance. The recommended operating condition of RT9133A/B is below the maximum junction temperature 150°C of the die. The junction to ambient thermal resistance for SOT-23-5 package is 250°C/W, WDFN-6L 2x2 package is 165°C/W and MSOP-8 package is 160°C/W on the standard JEDEC 51-3 single layer thermal test board. The maximum power dissipation at TA = 25°C can be calculated by following formula: PD(MAX) = (150°C−25°C) / 250 = 500mW (SOT-23-5) PD(MAX) = (150°C−25°C) / 165 = 758mW (WDFN-6L 2x2) PD(MAX) = ( 150°C - 25°C ) / 160 = 781mW (MSOP-8) For continuous operation, do not exceed absolute maximum operation junction temperature 150°C. The power dissipation definition for the RT9133A/B is as following: PD = (VS - VOUT) x ILoad VS : the supply voltage Output Voltage (5V/Div) VOUT : the output voltage ILoad : the output load current Time (250μs/Div) Figure 1. Operation with Rail-to-Rail Input and Output The maximum power dissipation depends on operating ambient temperature for fixed T J(MAX) and thermal resistance θJA. Figure 2 shows the power dissipation derating curves of the RT9133A/B with different packages. As the ambient temperature increases, the maximum power dissipation decreases linearly to keep the junction temperature below 150°C. Power Dissipation The maximum power dissipation depends on the thermal resistance of IC package, PCB layout, the rate of surroundings airflow and temperature difference between DS9133A/B-07 April 2011 www.richtek.com 9 Maximum Power Dissipation (mW) RT9133A/B 800 Single Layer Board @ TA = 25°C 300k 700 600 MSOP-8 WDFN-6L 2x2 8V 3k 500 400 4V + SOT-23-5 300 10 Measure Current 10 10 10 10nF 10nF 10nF 10nF 200 100 10 0 0 20 40 60 80 100 120 140 VIN 0V to 8V Square Wave 160 Ambient Temperature (°C) Figure 3. V-com Test Circuit An internal short-circuit protection circuit is implemented to protect the device from output short circuit. The RT9133A/B limits the short circuit current to ±120mA if the output is directly shorted to positive/negative supply rails. For maximum reliability, the maximum continuous output current more than ±35mA is not recommended. Unused Amplifier It is recommended to connect the unused amplifier as a unit gain circuit. The negative input is directly connected to the output and the positive input should be connected to the ground. Measure Current (100mA/Div) Short Circuit Condition Input Square (5V/Div) Figure 2. Derating Curves for the RT9133A/B Package Time (2.5μs/Div) Figure 4. Scope Photo of the V-com Peak Current LCD Panel Applications The RT9133A/B is mainly designed for LCD gamma and V-com buffer. OP Amplifier has 120mA instantaneous source/sink peak current. To test the performance of the RT9133A/B for LCD driving capability, the test circuit is to simulate the V-com driver as shown Figure 3. Series capacitors and resistors connected to the output of the OP simulate the load of LCD panel. The 300Ω and 3kΩ feedback resistors are used to improve the settling time. This circuit is the worst case for a V-com buffer. Figure 4 shows the waveforms of the output peak current capability. www.richtek.com 10 DS9133A/B-07 April 2011 RT9133A/B Outline Dimension H D L B C b A A1 e Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 0.889 1.295 0.035 0.051 A1 0.000 0.152 0.000 0.006 B 1.397 1.803 0.055 0.071 b 0.356 0.559 0.014 0.022 C 2.591 2.997 0.102 0.118 D 2.692 3.099 0.106 0.122 e 0.838 1.041 0.033 0.041 H 0.080 0.254 0.003 0.010 L 0.300 0.610 0.012 0.024 SOT-23-5 Surface Mount Package DS9133A/B-07 April 2011 www.richtek.com 11 RT9133A/B D2 D L E E2 1 e b A A1 SEE DETAIL A 2 1 2 1 A3 DETAIL A Pin #1 ID and Tie Bar Mark Options Note : The configuration of the Pin #1 identifier is optional, but must be located within the zone indicated. Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 0.700 0.800 0.028 0.031 A1 0.000 0.050 0.000 0.002 A3 0.175 0.250 0.007 0.010 b 0.200 0.350 0.008 0.014 D 1.950 2.050 0.077 0.081 D2 1.000 1.450 0.039 0.057 E 1.950 2.050 0.077 0.081 E2 0.500 0.850 0.020 0.033 e L 0.650 0.300 0.026 0.400 0.012 0.016 W-Type 6L DFN 2x2 Package www.richtek.com 12 DS9133A/B-07 April 2011 RT9133A/B D L E1 E e A2 A A1 b Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 0.810 1.100 0.032 0.043 A1 0.000 0.150 0.000 0.006 A2 0.750 0.950 0.030 0.037 b 0.220 0.380 0.009 0.015 D 2.900 3.100 0.114 0.122 e 0.650 0.026 E 4.800 5.000 0.189 0.197 E1 2.900 3.100 0.114 0.122 L 0.400 0.800 0.016 0.031 8-Lead MSOP Plastic Package Richtek Technology Corporation Richtek Technology Corporation Headquarter Taipei Office (Marketing) 5F, No. 20, Taiyuen Street, Chupei City 5F, No. 95, Minchiuan Road, Hsintien City Hsinchu, Taiwan, R.O.C. Taipei County, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 Tel: (8862)86672399 Fax: (8862)86672377 Email: [email protected] Information that is provided by Richtek Technology Corporation is believed to be accurate and reliable. Richtek reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. No third party intellectual property infringement of the applications should be guaranteed by users when integrating Richtek products into any application. No legal responsibility for any said applications is assumed by Richtek. DS9133A/B-07 April 2011 www.richtek.com 13