RT9134 Preliminary Rail-to-Rail Quad Operational Amplifier General Description Features 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. 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/μ μs Unity-Gain Stable RoHS Compliant and 100% Lead (Pb)-Free The RT9134 has high slew rates (12V/μs), 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. z z z z z Applications z z z Ordering Information RT9134 TFT-LCD Gamma / VCOM Buffer Portable Electronic Product Communications Product Pin Configurations Package Type QV : VQFN-16L 4x4 (V-Type) C : TSSOP-14 NC 12 2 11 GND 3 10 17 4 9 `Suitable for use in SnPb or Pb-free soldering processes. 6 7 VINDVIND+ VSVINC+ 8 VINC- ments of IPC/JEDEC J-STD-020. 5 VOUTC `RoHS compliant and compatible with the current require- 1 VINB- Richtek Pb-free and Green products are : 16 15 14 13 VINAVINA+ VS+ VINB+ VOUTB Note : NC Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commercial Standard VOUTA VOUTD (TOP VIEW) `100% matte tin (Sn) plating. VQFN-16L 4x4 Function Block Diagram VOUTA VINAVINA+ VOUTD - - + + VS+ VINB+ VINB- VINDVIND+ VOUTA VINAVINA+ VS+ VINB+ VINBVOUTB 2 3 4 5 6 7 14 13 12 11 10 9 8 VOUTD VINDVIND+ VSVINC+ VINCVOUTC VS+ + - - VOUTB DS9134-04 August 2007 VINC+ VINC- TSSOP-14 VOUTC www.richtek.com 1 RT9134 Preliminary Functional Pin Description Pin No. Pin Name Pin Function RT9134□C RT9134PQV 1 15 VOUTA Amplifier A Output. 2 1 VINA- Amplifier A Inverting Input. 3 2 VINA+ Amplifier A Non-Inverting Input. 4 3 VS+ Positive Power Supply. 5 4 VINB+ Amplifier B Non-Inverting Input. 6 5 VINB- Amplifier B Inverting Input. 7 6 VOUTB Amplifier B Output. 8 7 VOUTC Amplifier C Output. 9 8 VINC- Amplifier C Inverting Input. 10 9 VINC+ Amplifier C Non-Inverting Input. 11 10 VS- Negative Power Supply. 12 11 VIND+ Amplifier D Non-Inverting Input. 13 12 VIND- Amplifier D Inverting Input. 14 14 VOUTD Amplifier D Output. -- 16, Exposed Pad (17) GND The exposed pad must be soldered to a large PCB and connected to GND for maximum power dissipation. Absolute Maximum Ratings z z z z z z z z 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 RT9134 Preliminary 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 Units -- 2 15 mV Input Characteristics Input Offset Voltage VOS VCM = 0 Average Offset Voltage Drift ΔVOS/ΔT -40°C≦TA≦85°C -- 5 -- uV/°C Input Bias Current IB -- 2 50 nA Input Impedance RIN -- 1 -- GΩ Input Capacitance CIN -- 1.35 -- pF Common-Mode Input Range CMIR -5.5 -- +5.5 V VCM = 0 Common-Mode Rejection Ratio CMRR For VIN from –5.5V to +5.5V 50 80 -- dB Open-Loop Gain AVOL -4.5V≦VOUT≦+4.5V 75 95 -- dB Output swing Low VOL IL = -5mA -- -4.92 -4.85 V Output swing High VOH I L = +5mA 4.85 4.92 -- V IOC -- ±35 -- mA IPC -- ±120 -- mA Supply Voltage VS 4.5 -- 15 V Power Supply Rejection Ratio PSRR 60 70 -- dB Supply Current/Amplifier ISY No Load -- 500 750 uA Slew Rate(Note) SR -4.0V≦VOUT≦+4.0V, 20% to 80% -- 12 -- V/us Setting to ±0.1% (AV=+1) tS (AV = +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 Continuous VCOM Buffer Output current Peak VCOM Buffer Output current Power Supply VS is moved from ±2.25V to ±7.75V Dynamic Performance Note: Slew rate is measured on rising and falling edges. DS9134-04 August 2007 www.richtek.com 3 RT9134 Preliminary (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 Units Input Characteristics Input Offset Voltage VOS VCM = 2.5V -- 2 15 mV Average Offset Voltage Drift ΔVOS/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 V Output swing High VOH IL = +5mA 2.35 2.42 -- V IOC -- ±35 -- mA IPC -- ±90 -- mA 50 70 -- dB Output Characteristics Continuous VCOM Buffer Output current Peak VCOM Buffer Output current Power Supply Power Supply Rejection Ratio PSRR VS is moved from ±2.25V to ±7.75V Supply Current/Amplifier ISY No Load -- 500 750 uA Slew Rate(Note) SR -4.0V≦VOUT≦+4.0V, 20% to 80% -- 12 -- V/us Setting to ±0.1% (AV = +1) tS (AV = +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 Dynamic Performance Note: Slew rate is measured on rising and falling edges. www.richtek.com 4 DS9134-04 August 2007 RT9134 Preliminary 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) DS9134-04 August 2007 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) www.richtek.com 5 RT9134 Preliminary Frequency Response for Various RL 10 PSRR vs. Frequency 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) 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) www.richtek.com 6 Time (250ns/Div) DS9134-04 August 2007 RT9134 Preliminary Channel Separation vs. Frequency Response CMRR vs. Frequency -40 80 70 Channel Separation -50 60 CMRR 50 40 30 20 10 1k 1000 10k 10000 100k 100000 Frequency (Hz) DS9134-04 August 2007 -60 -70 -80 -90 VS = ±5V TA = 25°C 0 100 100 Quad measured channel A to C. VS : ±5V AV : 1 1M 10M 1000000 10000000 -100 1000 10000 10k 100000 100k 1000000 1M 10000000 10M Frequency Response (Hz) www.richtek.com 7 RT9134 Preliminary Applications Information 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. 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 Operating Voltage Where 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. 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 Input Voltage (5V/Div) 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: Output Voltage (5V/Div) PD = (VS - VOUT) x ILoad 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 www.richtek.com 8 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. DS9134-04 August 2007 RT9134 Preliminary Maximum Power Dissipation (mW) 2400 300k 4-Layers Board 2200 2000 8V 1800 3k VQFN-16L 4x4 1600 1400 4V + 1200 1000 800 10 Measure Current 10 10 10 10nF 10nF 10nF 10nF TSSOP-14 600 400 10 200 0 0 15 30 45 60 75 90 VIN 0V to 8V Square Wave 105 120 135 150 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 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. Measure Current (100mA/Div) Short Circuit Condition Input Square (5V/Div) Figure 2. Derating Curves for the RT9134 Package Time (2.5μs/Div) Figure 4. Scope Photo of the V-com Peak Current 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. DS9134-04 August 2007 www.richtek.com 9 RT9134 Preliminary Outline Dimension D SEE DETAIL A D2 L 1 E E2 e b A A1 1 1 2 2 DETAIL A Pin #1 ID and Tie Bar Mark Options A3 Note : The configuration of the Pin #1 identifier is optional, but must be located within the zone indicated. Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 0.800 1.000 0.031 0.039 A1 0.000 0.050 0.000 0.002 A3 0.175 0.250 0.007 0.010 b 0.250 0.380 0.010 0.015 D 3.950 4.050 0.156 0.159 D2 2.000 2.450 0.079 0.096 E 3.950 4.050 0.156 0.159 E2 2.000 2.450 0.079 0.096 e L 0.650 0.500 0.026 0.600 0.020 0.024 V-Type 16L QFN 4x4 Package www.richtek.com 10 DS9134-04 August 2007 RT9134 Preliminary D L E1 E e A2 A A1 b Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 1.000 1.200 0.039 0.047 A1 0.050 0.150 0.002 0.006 A2 0.800 1.060 0.031 0.042 b 0.190 0.300 0.007 0.012 D 4.900 5.100 0.193 0.201 e 0.650 0.026 E 6.200 6.600 0.244 0.260 E1 4.300 4.500 0.169 0.177 L 0.450 0.750 0.018 0.030 14-Lead TSSOP Plastic Package Richtek Technology Corporation Richtek Technology Corporation Headquarter Taipei Office (Marketing) 5F, No. 20, Taiyuen Street, Chupei City 8F, No. 137, Lane 235, Paochiao Road, Hsintien City Hsinchu, Taiwan, R.O.C. Taipei County, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 Tel: (8862)89191466 Fax: (8862)89191465 Email: [email protected] DS9134-04 August 2007 www.richtek.com 11