RT9133A/B

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).
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Rail-to-Rail Output Swing
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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
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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.
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Ordering Information
Pin Configurations
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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-
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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
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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.
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DS9133A/B-07 April 2011
RT9133A/B
Absolute Maximum Ratings
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(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
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(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
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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.
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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
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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)
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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)
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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)
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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
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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.
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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
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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
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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.
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