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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/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 -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 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
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RT9134
Functional Pin Description
Pin No. RT9134C 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 = 25C VQFN-16L 4x4 --------------------------------------------------------------------------------------------------------- 2315mW TSSOP-14 --------------------------------------------------------------------------------------------------------------- 1250mW Package Thermal Resistance (Note ) VQFN-16L 4x4, JA --------------------------------------------------------------------------------------------------- 54C/W TSSOP-14, JA --------------------------------------------------------------------------------------------------------- 100C/W Input Voltage ------------------------------------------------------------------------------------------------------------ -0.5V to Vs+0.5V Differential Input Voltage --------------------------------------------------------------------------------------------- VS Storage Temperature Range ---------------------------------------------------------------------------------------- -65C to +150C Operating Temperature Range -------------------------------------------------------------------------------------- -40C to +85C Junction Temperature Range ---------------------------------------------------------------------------------------- -65C to +150C
Note : JA is measured in the natural convection at TA = 25C on a high effective thermal conductivity test board (4-Layers, 2S2P) of JEDEC 51-7 thermal measurement standard.
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Preliminary Electrical Characteristics
(VS+=+5V, VS- = -5V, RL = 10k and CL = 10pF to 0V, TA =25C, 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 G pF V dB dB
VOS/T -40CTA85C IB RIN CIN CMIR For VIN from -5.5V to +5.5V -4.5VVOUT+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
-4.0VVOUT+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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RT9134
Parameter Input Characteristics Input Offset Voltage Average Offset Voltage Drift Input Bias Current Input Impedance Input Capacitance Common-Mode Input Range VOS VOS/T IB RIN CIN CMIR Symbol
Preliminary
(VS+ = +2.5V, VS- = -2.5V, RL = 10k and CL = 10pF to 2.5V, TA =25C, unless otherwise specified)
Test Conditions
Min
Typ
Max
Units
VCM = 2.5V -40CTA85C 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
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 0.5VVOUT+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
-4.0VVOUT+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 Typical Operating Characteristics
Quescent Current vs. Supply Voltage
0.52
0.56
RT9134
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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RT9134
Preliminary
Frequency Response for Various RL
20
PSRR vs. Frequency
80 60
Magnitude (Normalized) (dB)
10
VS = 5V RL = 10k 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 = 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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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 = 25C 1k 1000 10k 10000 100k 100000 1M 10M 1000000 10000000
-60 -70 -80 -90 -100 1000
CMRR
40 30 20 10
0 100 100
10000 10k
100000 100k
1000000 1M
10000000 10M
Frequency (Hz)
Frequency Response (Hz)
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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 10k 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 ) /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 the RT9134 is below 150C the maximum junction temperature of the die. The junction to ambient thermal resistance (JA is layout dependent) for VQFN-16L 4x4 package is 54C/W and TSSOP-14 package is 100C /W on the standard JEDEC 51-7 4-layers thermal test board. The maximum power dissipation at TA = 25C can be calculated by following formula : PD(MAX) = ( 150C - 25C ) / 54 = 2.315W fo rV QFN-16L 4x4 package PD(MAX) = ( 150C - 25C ) / 100 = 1.250W for TSSOP-14 package For continuous operation, do not exceed absolute maximum operation junction temperature 150C. 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 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 RT9134 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
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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 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.
Input Square (5V/Div) Measure Current (100mA/Div)
Time (2.5s/Div)
Figure 4. Scope Photo of the V-com Peak Current
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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
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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
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