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Preliminary
RT9133A/B
Rail-to-Rail Operational Amplifier
General Description
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). The RT9133A is available in SOT-23-5 and WDFN-6L 2x2 packages. The RT9133B is available in MSOP-8 package. The RT9133A/B are specified for operation over the full -40C to +85C 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/s Offset Voltage : 10mV RoHS Compliant and 100% Lead (Pb)-Free
Applications
TFT-LCD Gamma / VCOM Buffer Portable Electronic Product Communications Product
Ordering Information
RT9133A/B Package Type QW : WDFN-6L 2x2 (Single only) B : SOT-23-5 (Single only) F : MSOP-8 (Dual only) Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commercial Standard) A : Single Amplifier B : Dual Amplifier
Pin Configurations
(TOP VIEW)
VS+ 5 1 2 VIN4 3
VOUT VS- VIN+
SOT-23-5
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.
VOUTA VINAVINA+ VS8 2 3 4 7 6 5
VSNC VS+
1 2 3 7
6 5 4
VIN+ VINVOUT
WDFN-6L 2x2
Marking Information
For marking information, contact our sales representative directly or through a Richtek distributor located in your area, otherwise visit our website for detail.
VS+ VOUTB VINBVINB+
MSOP-8
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RT9133A/B
Function Block Diagram
Preliminary
VS+ VINVIN+
+
VOUTA VINAVINA+ VS+ +
VOUTB VINBVINB+ VS+
VOUT VS-
RT9133A
RT9133B
Functional Pin Description
Single
Pin No. SOT-23-5 1 -2 3 4 5 WDFN-6L 2x2 4 2, Exposed Pad (7) 1 6 5 3 Pin Name VOUT NC VSVIN+ VINVS+ Pin Function Amplifier Output. No Internal Connection. Negative Power Supply. Amplifier Non-Inverting Input. Amplifier Inverting Input. Positive Power Supply.
Dual
Pin No. 1 2 3 4 5 6 7 8 Pin Name VOUTA VINAVINA+ VSVINB+ VINBVOUTB VS+ Pin Function Amplifier A Output. Amplifier A Inverting Input. Amplifier A Non-Inverting Input. Negative Power Supply. Amplifier B Non-Inverting Input. Amplifier B Inverting Input. Amplifier B Output. Positive Power Supply.
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Preliminary Absolute Maximum Ratings
(Note 1)
RT9133A/B
Supply Voltage --------------------------------------------------------------------------------------------------------- 17V Power Dissipation, PD @ TA = 25C SOT-23-5 ---------------------------------------------------------------------------------------------------------------- 500mW WDFN-6L 2x2 ---------------------------------------------------------------------------------------------------------- 758mW MSOP-8 ----------------------------------------------------------------------------------------------------------------- 781mW Package Thermal Resistance (Note 4) SOT-23-5, JA ----------------------------------------------------------------------------------------------------------- 250C/W WDFN-6L 2x2, JA ----------------------------------------------------------------------------------------------------- 165C/W MSOP-8, JA ------------------------------------------------------------------------------------------------------------ 160C/W Differential Input Voltage --------------------------------------------------------------------------------------------- VS Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------------------- 260C Storage Temperature Range ---------------------------------------------------------------------------------------- -65C to +150C ESD Susceptibility (Note 2) HBM (Human Body Mode) ------------------------------------------------------------------------------------------ 2kV MM (Machine Mode) -------------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions
(Note 3)
Input Voltage ------------------------------------------------------------------------------------------------------------ -0.5V to Vs+0.5V Junction Temperature Range ---------------------------------------------------------------------------------------- -65C to +150C Ambient Temperature Range ---------------------------------------------------------------------------------------- -40C to +85C
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. Devices are ESD sensitive. Handling precaution recommended. Note 3. The device is not guaranteed to function outside its operating conditions. Note 4. JA is measured in the natural convection at TA = 25C on a low effective thermal conductivity test board (single layer, 1S) of JEDEC 51-3 thermal measurement standard.
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RT9133A/B
Electrical Characteristics
Preliminary
(VS+=+5V, VS- = -5V, RL = 10k and CL = 10pF to 0V, TA =25C, unless otherwise specified)
Parameter Input Characteristics Input Offset Voltage Average Offset Voltage Drift Input Bias Current Input Impedance Input Capacitance Common-Mode Input Range Common-Mode Rejection Ratio 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
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 G pF V dB dB
VOS/T -40CTA85C IB RIN CIN CMIR CMRR AVOL VOL VOH IOC IPC For VIN from -5.5V to +5.5V -4.5VVOUT+4.5V IL = -5mA I L = +5mA VCM = 0
50 75
-4.85 ---
-4.92 4.92 35 120
-4.85 ----
V V mA mA
VS PSRR ISY SR tS BW GBWP PM CS VS is moved from 2.25V to 7.75V No Load
4.5 60 --
-70 500
15 -750
V dB uA
-4.0VVOUT+4.0V, 20% to 80% (AV = +1), VOUT = 2V step RL = 10k, CL =10 pF RL = 10k, CL =10 pF RL = 10k, 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.
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Preliminary
(VS+=+2.5V, VS- = -2.5V, RL = 10k and CL = 10pF to 2.5V, TA =25C, unless otherwise specified)
RT9133A/B
Min Typ Max Units
Parameter Input Characteristics Input Offset Voltage Average Offset Voltage Drift Input Bias Current Input Impedance Input Capacitance Common-Mode Input Range Common-Mode Rejection Ratio 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
Symbol
Test Conditions
VOS
VCM = 2.5V
------0.5
2 5 2 1 1.35 -65 95
15 -50 --+5.5 ---
mV uV/C nA G pF V dB dB
VOS/T -40CTA 85C IB RIN CIN CMIR CMRR AVOL For VIN from -0.5V to +5.5V 0.5VVOUT+4.5V VCM = 2.5V
45 75
VOL VOH IOC IPC
IL = -5mA IL = +5mA
-2.35 ---
-2.42 2.42 35 90
-2.35 ----
mV V mA mA
PSRR ISY
VS is moved from 2.25V to 7.75V No Load
45 --
70 500
-750
dB uA
SR tS BW GBWP PM CS
-4VVOUT+4V, 20% to 80% (AV = +1), VOUT = 2V step RL = 10k, CL =10 pF RL = 10k, CL =10 pF RL = 10k, 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.
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RT9133A/B
Preliminary
Typical Operating Characteristics
Quescent Current vs. Supply Voltage
0.52
0.56
Quisient current vs. Temperature
VS = 5V
0.54
TA = 25C
Quescent Current (mA)
0.5
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 = 10k RL = 1k RL = 560
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 = 150
-10
-15 100k 100000
1M 1000000
10M 10000000
100M 100000000
Temperature (C)
Frequency (Hz)
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Preliminary
RT9133A/B
PSRR vs. Frequency
80 60
20
Frequency Response for Various CL
VS = 5V RL = 10k AV = 1 CL = 12pF
PSRR+ PSRR-
Magnitude (Normalized) (dB)1
10
0
CL = 50pF CL = 1000pF
-10
PSRR (dB)
40 20 0 -20 -40
CL = 100pF
-20
VS = 5V TA = 25C
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 (1s/Div)
Time (250ns/Div)
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RT9133A/B
CMRR vs. Frequency
80 70 60
Preliminary
CMRR (dB)
50 40 30 20 10
VS = 5V TA = 25C 1k 1000 10k 10000 100k 100000 1M 10M 1000000 10000000
0 100 100
Frequency (Hz)
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DS9133A/B-04 August 2007
Preliminary 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 10k and 10pF. Operating Voltage 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. 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.
RT9133A/B
junction to ambient. The maximum power dissipation can be calculated by following formula: PD(MAX) = ( TJ(MAX) - TA ) /JA Where TJ(MAX): The maximum operation junction temperature 150C TA : The ambient temperature. JA : The junction to ambient thermal resistance. The recommended operating condition of RT9133A/B is below the maximum junction temperature 150C of the die. The junction to ambient thermal resistance for SOT-23-5 package is 250C/W, WDFN-6L 2x2 package is 165C/W and MSOP-8 package is 160C/W on the standard JEDEC 51-3 single layer thermal test board. The maximum power dissipation at TA = 25C can be calculated by following formula: PD(MAX) = (150C-25C) / 250 = 500mW (SOT-23-5) PD(MAX) = (150C-25C) / 165 = 758mW (WDFN-6L 2x2) PD(MAX) = ( 150C - 25C ) / 160 = 781mW (MSOP-8) For continuous operation, do not exceed absolute maximum operation junction temperature 150C. The power dissipation definition for the RT9133A/B is as following: PD = (VS - VOUT) x ILoad VS : the supply voltage VOUT : the output voltage
Output Voltage (5V/Div)
Input Voltage (5V/Div)
ILoad : the output load current The maximum power dissipation depends on operating ambient temperature for fixed T J(MAX) and thermal resistance JA. 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 150C.
Time (250s/Div)
Figure 1. Operation with Rail-to-Rail Input and Output 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
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RT9133A/B
Maximum Power Dissipation (mW)
800 700 600 500 400 300 200 100 0 0 20 40 60 80 100 120
Preliminary
Single Layer Board @ TA = 25C
300k 8V
WDFN-6L 2x2
MSOP-8
3k
4V +
SOT-23-5
10 Measure Current
10 10nF
10 10nF
10 10nF 10nF
10
140 160
Ambient Temperature (C)
VIN 0V to 8V Square Wave
Figure 3. V-com Test Circuit Figure 2. Derating Curves for the RT9133A/B Package
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 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 300 and 3k 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.
Measure Current (100mA/Div)
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.
Input Square (5V/Div)
Short Circuit Condition
Time (2.5s/Div)
Figure 4. Scope Photo of the V-com Peak Current
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Preliminary Outline Dimension
RT9133A/B
H D L C B
b A A1 e
Symbol A A1 B b C D e H L
Dimensions In Millimeters Min 0.889 0.000 1.397 0.356 2.591 2.692 0.838 0.080 0.300 Max 1.295 0.152 1.803 0.559 2.997 3.099 1.041 0.254 0.610
Dimensions In Inches Min 0.035 0.000 0.055 0.014 0.102 0.106 0.033 0.003 0.012 Max 0.051 0.006 0.071 0.022 0.118 0.122 0.041 0.010 0.024
SOT-23-5 Surface Mount Package
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RT9133A/B
Preliminary
D
D2 L
E
E2 SEE DETAIL A
1 e A A1 A3
b
2
1
2
1
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 0.700 0.000 0.175 0.200 1.950 1.000 1.950 0.500 0.650 0.300 0.400 Max 0.800 0.050 0.250 0.350 2.050 1.450 2.050 0.850
Dimensions In Inches Min 0.028 0.000 0.007 0.008 0.077 0.039 0.077 0.020 0.026 0.012 0.016 Max 0.031 0.002 0.010 0.014 0.081 0.057 0.081 0.033
W-Type 6L DFN 2x2 Package
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DS9133A/B-04 August 2007
Preliminary
RT9133A/B
D L
E
E1
e A A1 b A2
Symbol A A1 A2 b D e E E1 L
Dimensions In Millimeters Min 0.810 0.000 0.750 0.220 2.900 0.650 4.800 2.900 0.400 5.000 3.100 0.800 Max 1.100 0.150 0.950 0.380 3.100
Dimensions In Inches Min 0.032 0.000 0.030 0.009 0.114 0.026 0.189 0.114 0.016 0.197 0.122 0.031 Max 0.043 0.006 0.037 0.015 0.122
8-Lead MSOP 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
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