RT9134PC

Preliminary RT9134 Rail-to-Rail Quad Operational Amplifier General Description The RT9134 consists of low cost, high slew rates, singlesupply rail-to-rail input and output operation amplifiers. The RT9134 contains four amplifiers in one package. The RT9134 has high slew rates (12V/ μ s), 35mA continuous output current, 120mA peak output current and offset voltage below 10mV. The RT9134 is ideal for Thin Film Transistor Liquid Crystal Displays (TFT-LCD). The RT9134 is available in TSSOP-14 and VQFN-16L 4x4 package and is specified for operation over the full −40°C to +85°C temperature range. Features Rail-to-Rail Output Swing Supply Voltage : 4.5V to 15V Continuous Output Current : 35mA Peak Output Current : 120mA High Slew Rate : 12V/μs Unity-Gain Stable RoHS Compliant and 100% Lead (Pb)-Free Applications TFT-LCD Gamma / VCOM Buffer Portable Electronic Product Communications Product Ordering Information RT9134 Package Type QV : VQFN-16L 4x4 (V-Type) C : TSSOP-14 Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commercial Standard Pin Configurations (TOP VIEW) VOUTA VOUTD NC 16 15 14 13 NC 12 11 10 9 Note : Richtek Pb-free and Green products are : RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. 100% matte tin (Sn) plating. VINAVINA+ VS+ VINB+ 1 2 3 4 5 6 7 8 GND 17 VINDVIND+ VSVINC+ VOUTC VOUTB VINB- VQFN-16L 4x4 Function Block Diagram VOUTA VINAVINA+ VS+ VINB+ VINBVOUTB + + + + VINC- VOUTD VINDVIND+ VSVINC+ VINCVOUTC VOUTA VINAVINA+ VS+ VINB+ VINBVOUTB 2 3 4 5 6 7 14 13 12 11 10 9 8 VOUTD VINDVIND+ VSVINC+ VINCVOUTC TSSOP-14 DS9134-04 August 2007 www.richtek.com 1 RT9134 Functional Pin Description Pin No. RT9134□C 1 2 3 4 5 6 7 8 9 10 11 12 13 14 -RT9134PQV 15 1 2 3 4 5 6 7 8 9 10 11 12 14 16, Exposed Pad (17) Pin Name VOUTA VINAVINA+ VS+ VINB+ VINBVOUTB VOUTC VINCVINC+ VSVIND+ VINDVOUTD GND Preliminary Pin Function Amplifier A Output. Amplifier A Inverting Input. Amplifier A Non-Inverting Input. Positive Power Supply. Amplifier B Non-Inverting Input. Amplifier B Inverting Input. Amplifier B Output. Amplifier C Output. Amplifier C Inverting Input. Amplifier C Non-Inverting Input. Negative Power Supply. Amplifier D Non-Inverting Input. Amplifier D Inverting Input. Amplifier D Output. The exposed pad must be soldered to a large PCB and connected to GND for maximum power dissipation. Absolute Maximum Ratings Supply Voltage --------------------------------------------------------------------------------------------------------- 17V Power Dissipation, PD @ TA = 25°C VQFN-16L 4x4 --------------------------------------------------------------------------------------------------------- 2315mW TSSOP-14 --------------------------------------------------------------------------------------------------------------- 1250mW Package Thermal Resistance (Note ) VQFN-16L 4x4, θJA --------------------------------------------------------------------------------------------------- 54°C/W TSSOP-14, θJA --------------------------------------------------------------------------------------------------------- 100°C/W Input Voltage ------------------------------------------------------------------------------------------------------------ −0.5V to Vs+0.5V Differential Input Voltage --------------------------------------------------------------------------------------------- VS Storage Temperature Range ---------------------------------------------------------------------------------------- −65°C to +150°C Operating Temperature Range -------------------------------------------------------------------------------------- −40°C to +85°C Junction Temperature Range ---------------------------------------------------------------------------------------- −65°C to +150°C Note : θJA is measured in the natural convection at TA = 25°C on a high effective thermal conductivity test board (4-Layers, 2S2P) of JEDEC 51-7 thermal measurement standard. www.richtek.com 2 DS9134-04 August 2007 Preliminary Electrical Characteristics (VS+=+5V, VS- = -5V, RL = 10kΩ and CL = 10pF to 0V, TA =25°C, unless otherwise specified) RT9134 Parameter Input Characteristics Input Offset Voltage Average Offset Voltage Drift Input Bias Current Input Impedance Input Capacitance Common-Mode Input Range Symbol Test Conditions Min Typ Max Units VOS VCM = 0 ------5.5 2 5 2 1 1.35 -80 95 15 -50 --+5.5 --- mV uV/°C nA GΩ pF V dB dB ΔVOS/ΔT -40°C≦TA≦85°C IB RIN CIN CMIR For VIN from –5.5V to +5.5V -4.5V≦VOUT≦+4.5V VCM = 0 Common-Mode Rejection Ratio CMRR Open-Loop Gain Output Characteristics Output swing Low Output swing High Continuous VCOM Buffer Output current Peak VCOM Buffer Output current Power Supply Supply Voltage Power Supply Rejection Ratio Supply Current/Amplifier Dynamic Performance Slew Rate(Note) Setting to ±0.1% (AV=+1) -3dB Bandwidth Gain-Bandwidth Product Phase Margin Channel Separation SR tS BW GBWP PM CS VS PSRR ISY VOL VOH IOC IPC AVOL 50 75 IL = -5mA I L = +5mA -4.85 --- -4.92 4.92 ±35 ±120 -4.85 ---- V V mA mA 4.5 VS is moved from ±2.25V to ±7.75V No Load 60 -- -70 500 15 -750 V dB uA -4.0V≦VOUT≦+4.0V, 20% to 80% (AV = +1), VOUT = 2V step RL = 10kΩ, CL = 10 pF RL = 10kΩ, CL = 10 pF RL = 10kΩ, CL = 10 pF f = 5MHz ------- 12 500 12 5 50 75 ------- V/us ns MHz MHz ° dB Note: Slew rate is measured on rising and falling edges. DS9134-04 August 2007 www.richtek.com 3 RT9134 Parameter Input Characteristics Input Offset Voltage Average Offset Voltage Drift Input Bias Current Input Impedance Input Capacitance Common-Mode Input Range VOS ΔVOS/ΔT IB RIN CIN CMIR Symbol Preliminary (VS+ = +2.5V, VS− = −2.5V, RL = 10kΩ and CL = 10pF to 2.5V, TA =25°C, unless otherwise specified) Test Conditions Min Typ Max Units VCM = 2.5V -40°C≦TA≦85°C VCM = 2.5V ------0.5 2 5 2 1 1.35 -65 95 15 -50 --+5.5 --- mV uV/°C nA GΩ pF V dB dB Common-Mode Rejection Ratio CMRR Open-Loop Gain Output Characteristics Output swing Low Output swing High Continuous VCOM Buffer Output current Peak VCOM Buffer Output current Power Supply Power Supply Rejection Ratio Supply Current/Amplifier Dynamic Performance Slew Rate(Note) Setting to ±0.1% (AV = +1) -3dB Bandwidth Gain-Bandwidth Product Phase Margin Channel Separation SR tS BW GBWP PM CS PSRR ISY VOL VOH IOC IPC AVOL For VIN from –0.5V to +5.5V 0.5V≦VOUT≦+4.5V 45 75 IL = -5mA IL = +5mA -2.35 --- −2.42 2.42 ±35 ±90 −2.35 ---- V V mA mA VS is moved from ±2.25V to ±7.75V No Load 50 -- 70 500 -750 dB uA -4.0V≦VOUT≦+4.0V, 20% to 80% (AV = +1), VOUT = 2V step RL = 10kΩ, CL =10 pF RL = 10kΩ, CL =10 pF RL = 10kΩ, CL =10 pF f = 5MHz ------- 12 500 12 5 50 75 ------- V/us ns MHz MHz ° dB Note: Slew rate is measured on rising and falling edges. www.richtek.com 4 DS9134-04 August 2007 Preliminary Typical Operating Characteristics Quescent Current vs. Supply Voltage 0.52 0.5 RT9134 Quisient current vs. Temperature 0.56 0.54 TA = 25°C VS = ±5V Quescent Current (mA) Quisient current (mA) 4 5 6 7 8 9 10 11 12 13 14 15 0.52 0.5 0.48 0.46 0.44 0.42 0.4 -50 -30 -10 10 30 50 70 90 110 130 150 0.48 0.46 0.44 0.42 0.4 Supply Voltage (V) Temperature (°C) Output High Voltage vs. Temperature 5 4.98 Output Low Voltage vs. Temperature -4.88 -4.885 VS = ±5V IOUT = 5mA VS = ±5V IOUT = −5mA Output High Voltage (V) 4.94 4.92 4.9 4.88 4.86 4.84 4.82 4.8 -50 -30 -10 10 30 50 70 90 110 130 150 Output Low Voltage (V) 4.96 -4.89 -4.895 -4.9 -4.905 -4.91 -4.915 -4.92 -4.925 -4.93 -50 -30 -10 10 30 50 70 90 110 130 150 Temperature (°C) Temperature (°C) Slew Rate vs. Temperature 12.5 12 Frequency Response for Various RL 5 VS = ±5V Magnitude (Normalized) (dB) VS = ±5V CL = 10pF AV = 1 RL = 10kΩ RL = 1kΩ RL = 560Ω Slew Rate (V/us) 11.5 11 10.5 10 9.5 9 -50 -30 -10 10 30 50 70 90 110 130 150 0 -5 RL = 150Ω -10 -15 100k 100000 1M 1000000 10M 10000000 100M 100000000 Temperature (°C) Frequency (Hz) DS9134-04 August 2007 www.richtek.com 5 RT9134 Preliminary Frequency Response for Various RL 20 PSRR vs. Frequency 80 60 Magnitude (Normalized) (dB) 10 VS = ±5V RL = 10kΩ AV = 1 CL = 12pF PSRR+ PSRR- 0 CL = 50pF CL = 1000pF -10 PSRR (dB) 40 20 0 -20 -40 CL = 100pF -20 VS = ±5V TA = 25°C 100 100 1000 1k 10000 10k 100000 100k 1000000 1M -30 100k 100000 1M 1000000 10M 10000000 100M 100000000 Frequency (Hz) Frequency (Hz) Slew Transient Response VS : ±5V AV : 1 Slew Transient Response VS : ±5V AV : 1 (1V/Div) (2V/Div) V+ VOUT (2V/Div) VOUT (1V/Div) V+ Time (250ns/Div) Time (250ns/Div) Large Signal Transient Response VS : ±7V AV : 1 Small Signal Transient Response VS : ±5V AV : 1 V+ V+ (2V/Div) (100mV/Div) (2V/Div) VOUT VOUT (100mV/Div) Time (1μs/Div) Time (250ns/Div) www.richtek.com 6 DS9134-04 August 2007 Preliminary RT9134 Channel Separation vs. Frequency Response -40 -50 CMRR vs. Frequency 80 70 60 50 Quad measured channel A to C. VS : ±5V AV : 1 Channel Separation VS = ±5V TA = 25°C 1k 1000 10k 10000 100k 100000 1M 10M 1000000 10000000 -60 -70 -80 -90 -100 1000 1000 CMRR 40 30 20 10 0 100 100 10000 10k 100000 100k 1000000 1M 10000000 10M Frequency (Hz) Frequency Response (Hz) DS9134-04 August 2007 www.richtek.com 7 RT9134 Applications Information Preliminary The RT9134 packaged in quad operational amplifiers 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 RT9134 ideal for LCD applications. The RT9134 also has wide bandwidth and phase margin to drive a load of 10kΩ and 10pF. Operating Voltage The RT9134 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. The output swing of the RT9134 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. 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 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. θJA : The junction to ambient thermal resistance. The recommended operating condition of the RT9134 is below 150°C the maximum junction temperature of the die. The junction to ambient thermal resistance (θJA is layout dependent) for VQFN-16L 4x4 package is 54°C/W and TSSOP-14 package is 100°C /W on the standard JEDEC 51-7 4-layers thermal test board. The maximum power dissipation at TA = 25°C can be calculated by following formula : PD(MAX) = ( 150°C - 25°C ) / 54 = 2.315W fo rV QFN-16L 4x4 package PD(MAX) = ( 150°C - 25°C ) / 100 = 1.250W for TSSOP-14 package For continuous operation, do not exceed absolute maximum operation junction temperature 150°C. The power dissipation definition for the RT9134 is as following: PD = (VS - VOUT) x ILoad Output Voltage (5V/Div) Input Voltage (5V/Div) VS : the supply voltage 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 RT9134 with different packages. As the ambient temperature increases, the maximum power dissipation decreases linearly to keep the junction temperature below 150°C. www.richtek.com 8 DS9134-04 August 2007 Preliminary 2400 RT9134 300k Maximum Power Dissipation (mW) 2200 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 15 30 45 60 75 90 4-Layers Board 8V VQFN-16L 4x4 3k 4V + 10 Measure Current 10 10nF 10 10nF 10 10nF 10nF TSSOP-14 10 VIN 0V to 8V Square Wave 105 120 135 150 Ambient Temperature (°C) Figure 3. V-com Test Circuit Figure 2. Derating Curves for the RT9134 Package Short Circuit Condition An internal short-circuit protection circuit is implemented to protect the device from output short circuit. The RT9134 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. LCD Panel Applications The RT9134 is mainly designed for LCD gamma and V-com buffer. OP Amplifier-C has 120mA instantaneous source/sink peak current. To test the performance of the RT9134 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. Input Square (5V/Div) Measure Current (100mA/Div) Time (2.5μs/Div) Figure 4. Scope Photo of the V-com Peak Current DS9134-04 August 2007 www.richtek.com 9 RT9134 Outline Dimension Preliminary D D2 SEE DETAIL A L 1 E E2 1 1 2 e A A1 A3 b 2 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. Symbol A A1 A3 b D D2 E E2 e L Dimensions In Millimeters Min 0.800 0.000 0.175 0.250 3.950 2.000 3.950 2.000 0.650 0.500 0.600 Max 1.000 0.050 0.250 0.380 4.050 2.450 4.050 2.450 Dimensions In Inches Min 0.031 0.000 0.007 0.010 0.156 0.079 0.156 0.079 0.026 0.020 0.024 Max 0.039 0.002 0.010 0.015 0.159 0.096 0.159 0.096 V-Type 16L QFN 4x4 Package www.richtek.com 10 DS9134-04 August 2007 Preliminary RT9134 D L E E1 e A A1 b A2 Symbol A A1 A2 b D e E E1 L Dimensions In Millimeters Min 1.000 0.050 0.800 0.190 4.900 0.650 6.200 4.300 0.450 6.600 4.500 0.750 Max 1.200 0.150 1.060 0.300 5.100 Dimensions In Inches Min 0.039 0.002 0.031 0.007 0.193 0.026 0.244 0.169 0.018 0.260 0.177 0.030 Max 0.047 0.006 0.042 0.012 0.201 14-Lead TSSOP Plastic Package Richtek Technology Corporation Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 Richtek Technology Corporation Taipei Office (Marketing) 8F, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek.com DS9134-04 August 2007 www.richtek.com 11