OPA2333AQDRQ1 [TI]
汽车类 1.8V、17uA、2uV、微功耗 CMOS 零漂移系列运算放大器 | D | 8 | -40 to 125;
| 型号： | OPA2333AQDRQ1 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 汽车类 1.8V、17uA、2uV、微功耗 CMOS 零漂移系列运算放大器 | D | 8 | -40 to 125 放大器 光电二极管 运算放大器 |
| 文件： | 总16页 (文件大小：409K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
OPA2333-Q1
www.ti.com
SBOS463A –DECEMBER 2008–REVISED JUNE 2010
1.8-V MICROPOWER CMOS OPERATIONAL AMPLIFIER
ZERO-DRIFT SERIES
Check for Samples: OPA2333-Q1
1
FEATURES
D OR DGK PACKAGE
(TOP VIEW)
•
•
•
•
•
•
•
Qualified for Automotive Applications
Low Offset Voltage: 23 mV (Max)
0.01-Hz to 10-Hz Noise: 1.1 mVPP
Quiescent Current: 17 mA
OUT A
–IN A
+IN A
V–
V+
1
2
3
4
8
7
6
5
OUT B
–IN B
+IN B
Single-Supply Operation
Supply Voltage: 1.8 V to 5.5 V
Rail-to-Rail Input/Output
0.1Hz TO 10Hz NOISE
APPLICATIONS
•
•
•
•
•
•
Transducer Applications
Temperature Measurements
Electronic Scales
Medical Instrumentation
Battery-Powered Instruments
Handheld Test Equipment
1s/div
DESCRIPTION/ORDERING INFORMATION
The OPA2333A CMOS operational amplifiers use a proprietary auto-calibration technique to simultaneously
provide very low offset voltage (10 mV max) and near-zero drift over time and temperature. These miniature
high-precision low-quiescent-current amplifiers offer high-impedance inputs that have a common-mode range
100 mV beyond the rails and rail-to-rail output that swings within 50 mV of the rails. Single or dual supplies as
low as 1.8 V (±0.9 V) and up to 5.5 V (±2.75 V) may be used. They are optimized for low-voltage single-supply
operation.
The OPA2333A offers excellent common-mode rejection ratio (CMRR) without the crossover associated with
traditional complementary input stages. This design results in superior performance for driving analog-to-digital
converters (ADCs) without degradation of differential linearity.
The OPA2333A is specified for operation from –40°C to 125°C.
ORDERING INFORMATION(1)
TA
PACKAGE(2)
Reel of 2500
Reel of 2500
ORDERABLE PART NUMBER
TOP-SIDE MARKING
02333Q
OCOQ
SOIC – D
OPA2333AQDRQ1
–40°C to 125°C
MSOP – DGK
OPA2333AQDGKRQ1
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008–2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
OPA2333-Q1
SBOS463A –DECEMBER 2008–REVISED JUNE 2010
www.ti.com
ABSOLUTE MAXIMUM RATINGS(1)
over operating free-air temperature range (unless otherwise noted)
VCC
Supply voltage
7 V
VI
Input voltage, signal input terminals(2)
–0.3 V to (V+) + 0.3
Continuous
–40°C to 125°C
150°C
IO(SS) Output short-circuit circuit(3)
TA
Operating free-air temperature range
Maximum operating virtual-junction temperature
Storage temperature range
TJ
Tstg
–65°C to 150°C
2000 V
Human-Body Model (HBM)
ESD
Electrostatic discharge (ESD) rating
Charged-Device Model (CDM)
1000 V
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) Input terminals are diode clamped to the power-supply rails. Input signals that can swing more than 0.3 V beyond the supply rails should
be current limited to 10 mA or less.
(3) Short circuit to ground, one amplifier per package
ELECTRICAL CHARACTERISTICS: VS = 1.8 V to 5.5 V
Boldface limits apply over the specified temperature range, TA = –40°C to 125°C. At TA = 25°C, RL = 10 kΩ connected to
VS/2, VCM = VS/2, and VOUT = VS/2 (unless otherwise noted).
PARAMETER
OFFSET VOLTAGE
TEST CONDITIONS
MIN
TYP
2
MAX
UNIT
Input offset voltage
over temperature
vs temperature
VOS
VS = 5 V
10
mV
mV
22
dVOS/dT
PSRR
0.02
mV/°C
mV/V
vs power supply
Long-term stability(1)
Channel separation, dc
INPUT BIAS CURRENT
Input bias current
over Temperature
Input offset current
NOISE
VS = 1.8 V to 5.5 V
1
(1)
6
0.1
mV/V
IB
±70
±150
±140
±200
±400
pA
pA
pA
IOS
Input voltage noise,
f = 0.01 Hz to 1 Hz
0.3
mVPP
Input voltage noise,
f = 0.1 Hz to 10 Hz
1.1
mVPP
Input current noise, f = 10 Hz
INPUT VOLTAGE RANGE
Common mode voltage range
in
100
fA/√Hz
VCM
(V–) – 0.1
(V+) + 0.1
V
Common-Mode Rejection
Ratio
CMRR
(V–) – 0.1 V < VCM < (V+) + 0.1 V
102
130
dB
INPUT CAPACITANCE
Differential
2
4
pF
pF
Common mode
OPEN-LOOP GAIN
(V–) + 100 mV < VO < (V+) – 100 mV,
Open-loop voltage gain
AOL
104
130
dB
RL = 10 kΩ
FREQUENCY RESPONSE
Gain-bandwidth product
Slew rate
GBW
SR
CL = 100 pF
G = 1
350
kHz
0.16
V/ms
(1) 300-hour life test at 150°C demonstrated randomly distributed variation of approximately 1 mV.
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Product Folder Link(s): OPA2333-Q1
OPA2333-Q1
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SBOS463A –DECEMBER 2008–REVISED JUNE 2010
ELECTRICAL CHARACTERISTICS: VS = 1.8 V to 5.5 V (continued)
Boldface limits apply over the specified temperature range, TA = –40°C to 125°C. At TA = 25°C, RL = 10 kΩ connected to
VS/2, VCM = VS/2, and VOUT = VS/2 (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
30
MAX
UNIT
OUTPUT
Voltage output swing from rail
over temperature
RL = 10 kΩ
RL = 10 kΩ
50
mV
mV
mA
85
Short-circuit current
ISC
CL
±5
Capacitive load drive
(2)Open-loop output
impedance
f = 350 kHz, IO = 0
2
kΩ
POWER SUPPLY
Specified voltage range
VS
IQ
1.8
5.5
25
30
V
Quiescent current per
amplifier
IO = 0
17
mA
over temperature
Turn-on time
mA
ms
VS = 5 V
100
TEMPERATURE RANGE
Specified range
–40
–40
–65
125
125
150
°C
°C
Operating range
Storage range
°C
Thermal resistance
qJA
SO-8 (D)
150
°C/W
°C/W
MSOP-8 (DGK)
172.47
(2) See Typical Characteristics.
Copyright © 2008–2010, Texas Instruments Incorporated
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SBOS463A –DECEMBER 2008–REVISED JUNE 2010
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TYPICAL CHARACTERISTICS
At TA = 25°C, VS = 5 V, and CL = 0 pF (unless otherwise noted)
OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION
OFFSET VOLTAGE PRODUCTION DISTRIBUTION
µ
Offset Voltage ( V)
µ
_
Offset Voltage Drift ( V/ C)
OPEN−LOOP GAIN vs FREQUENCY
COMMON−MODE REJECTION RATIO vs FREQUENCY
120
100
80
60
40
20
0
250
200
150
100
50
140
120
100
80
60
0
40
−
−
50
20
−
20
100
0
10
100
1k
10k
100k
1M
1
10
100
1k
10k
100k
1M
Frequency (Hz)
Frequency (Hz)
POWER−SUPPLY REJECTION RANGE vs FREQUENCY
+PSRR
OUTPUT VOLTAGE SWING vs OUTPUT CURRENT
120
100
80
60
40
20
0
3
2
1
0
±
±
VS
VS
=
=
2.75V
0.9V
−
_
40 C
−
PSRR
_
+25 C
_
+125 C
_
+25 C
−
_
40 C
−
−
−
1
2
3
_
+125 C
_
+25 C
−
_
40 C
1
10
100
1k
10k
100k
1M
0
1
2
3
4
5
6
7
8
9
10
Frequency (Hz)
Output Current (mA)
4
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Product Folder Link(s): OPA2333-Q1
OPA2333-Q1
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SBOS463A –DECEMBER 2008–REVISED JUNE 2010
TYPICAL CHARACTERISTICS (continued)
INPUT BIAS CURRENT vs COMMON−MODE VOLTAGE
INPUT BIAS CURRENT vs TEMPERATURE
100
80
60
40
20
0
200
150
100
50
VS = 5.5V
VS = 1.8V
−
IB
−
IB
−
IB
VS = 5V
0
+IB
−
−
−
−
20
40
60
80
−
50
−
−
−
100
150
200
+IB
+IB
−
100
−
−
0
1
2
3
4
5
50
25
0
25
50
75
100
125
_
Temperature ( C)
Common−Mode Voltage (V)
QUIESCENT CURRENT vs TEMPERATURE
LARGE−SIGNAL STEP RESPONSE
25
20
15
10
5
G = 1
RL = 10k
Ω
VS = 5.5V
VS = 1.8V
0
−
−
25
50
0
25
50
75
100
125
µ
Time (50 s/div)
_
Temperature ( C)
SMALL−SIGNAL STEP RESPONSE
POSITIVE OVER- VOLTAGE RECOVERY
G = +1
Ω
RL = 10k
0
Input
Output
10 kW
+2.5 V
1 kW
0
1/2
OPA2333
–2.5 V
µ
Time (5 s/div)
Time (50 µs/div)
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SBOS463A –DECEMBER 2008–REVISED JUNE 2010
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TYPICAL CHARACTERISTICS (continued)
SETTLING TIME vs CLOSED−LOOP GAIN
NEGATIVE OVER- VOLTAGE RECOVERY
600
500
400
300
200
100
0
4V Step
Input
0
0
10 kW
+2.5 V
1 kW
0.001%
0.01%
Output
1/2
OPA2333
–2.5 V
1
10
100
Time (50 µs/div)
Gain (dB)
SMALL−SIGNAL OVERSHOOT vs LOAD CAPACITANCE
0.1Hz TO 10Hz NOISE
40
35
30
25
20
15
10
5
0
10
100
1000
1s/div
Load Capacitance (pF)
CURRENT AND VOLTAGE NOISE SPECTRAL DENSITY
vs FREQUENCY
1000
100
10
1000
Continues with no 1/f (flicker) noise.
Current Noise
100
Voltage Noise
10
1
10
100
1k
10k
Frequency (Hz)
6
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Product Folder Link(s): OPA2333-Q1
OPA2333-Q1
www.ti.com
SBOS463A –DECEMBER 2008–REVISED JUNE 2010
APPLICATION INFORMATION
The OPA2333A op amps are unity-gain stable and free from unexpected output phase reversal. They use a
proprietary auto-calibration technique to provide low offset voltage and very low drift over time and temperature.
For lowest offset voltage and precision performance, circuit layout and mechanical conditions should be
optimized. Avoid temperature gradients that create thermoelectric (Seebeck) effects in the thermocouple
junctions formed from connecting dissimilar conductors. These thermally-generated potentials can be made to
cancel by ensuring they are equal on both input terminals. Other layout and design considerations include:
•
•
•
Use low thermoelectric-coefficient conditions (avoid dissimilar metals)
Thermally isolate components from power supplies or other heat sources
Shield op amp and input circuitry from air currents, such as cooling fans
Following these guidelines will reduce the likelihood of junctions being at different temperatures, which can cause
thermoelectric voltages of 0.1 mV/°C or higher, depending on materials used.
Operating Voltage
The OPA2333A op amps operate over a power-supply range of 1.8 V to 5.5 V (±0.9 V to ±2.75 V). Supply
voltages higher than 7 V (absolute maximum) can permanently damage the device. Parameters that vary over
supply voltage or temperature are shown in the Typical Characteristics section of this data sheet.
Input Voltage
The OPA2333A input common-mode voltage range extends 0.1 V beyond the supply rails. The device is
designed to cover the full range without the troublesome transition region found in some other rail-to-rail
amplifiers.
Normally, input bias current is about 70 pA; however, input voltages exceeding the power supplies can cause
excessive current to flow into or out of the input pins. Momentary voltages greater than the power supply can be
tolerated if the input current is limited to 10 mA. This limitation is easily accomplished with an input resistor(see
Figure 1).
+5 V
IOVERLOAD
1/2
10 mA max
OPA2333
VOUT
VIN
5 kW
(see Note)
NOTE: Current-limiting resistor required if input voltage exceeds supply rails by ≥ 0.5 V.
Figure 1. Input Current Protection
Internal Offset Correction
The OPA2333A op amps use an auto-calibration technique with a time-continuous 350-kHz op amp in the signal
path. This amplifier is zero corrected every 8 ms using a proprietary technique. Upon power up, the amplifier
requires approximately 100 ms to achieve specified VOS accuracy. This design has no aliasing or flicker noise.
Achieving Output Swing to the Op Amp Negative Rail
Some applications require output voltage swings from 0 V to a positive full-scale voltage (such as 2.5 V) with
excellent accuracy. With most single-supply op amps, problems arise when the output signal approaches 0 V,
near the lower output swing limit of a single-supply op amp. A good single-supply op amp may swing close to
single-supply ground, but will not reach ground. The output of the OPA2333A can be made to swing to ground or
slightly below on a single-supply power source. To do so requires the use of another resistor and an additional,
more negative, power supply than the op amp negative supply. A pulldown resistor may be connected between
the output and the additional negative supply to pull the output down below the value that the output would
otherwise achieve (see Figure 2).
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SBOS463A –DECEMBER 2008–REVISED JUNE 2010
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V+ = +5 V
1/2
VOUT
OPA2333
VIN
RP = 20 kW
Op Amp
V– = Ground
-5 V
Additional
Negative Supply
Figure 2. VOUT Range to Ground
The OPA2333A has an output stage that allows the output voltage to be pulled to its negative supply rail, or
slightly below, using the technique previously described. This technique only works with some types of output
stages. The OPA2333A has been characterized to perform with this technique; however, the recommended
resistor value is approximately 20 kΩ. Note that this configuration increases the current consumption by several
hundreds of microamps. Accuracy is excellent down to 0 V and as low as –2 mV. Limiting and nonlinearity
occurs below –2 mV, but excellent accuracy returns as the output is again driven above –2 mV. Lowering the
resistance of the pulldown resistor allows the op amp to swing even further below the negative rail. Resistances
as low as 10 kΩ can be used to achieve excellent accuracy down to –10 mV.
General Layout Guidelines
Attention to good layout practices is always recommended. Keep traces short and, when possible, use a printed
circuit board (PCB) ground plane with surface-mount components placed as close to the device pins as possible.
Place a 0.1-mF capacitor closely across the supply pins. These guidelines should be applied throughout the
analog circuit to improve performance and provide benefits, such as reducing the electromagnetic interference
(EMI) susceptibility.
Operational amplifiers vary in their susceptibility to radio frequency interference (RFI). RFI can generally be
identified as a variation in offset voltage or dc signal levels with changes in the interfering RF signal. The
OPA2333A has been specifically designed to minimize susceptibility to RFI and demonstrates remarkably low
sensitivity compared to previous-generation devices. Strong RF fields may still cause varying offset levels.
4.096V
REF3140
+5V
0.1µF
+
R9
150kW
R1
6.04kW
R5
+5V
0.1µF
31.6kW
D1
R2
R2
2.94kW
549W
-
-
1/2
OPA2333
+
+
VO
R6
200W
K-Type
Thermocouple
40.7µV/°C
R4
6.04kW
R3
Zero Adj.
60.4W
Figure 3. Temperature Measurement
Figure 4 shows the basic configuration for a bridge amplifier.
8
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SBOS463A –DECEMBER 2008–REVISED JUNE 2010
VEX
R1
+5V
R
R
R
R
1/2
VOUT
OPA2333
R1
VREF
Figure 4. Single Op-Amp Bridge Amplifier
A low-side current shunt monitor is shown in Figure 5. RN are operational resistors used to isolate the ADS1100
from the noise of the digital I2C bus. Since the ADS1100 is a 16-bit converter, a precise reference is essential for
maximum accuracy. If absolute accuracy is not required, and the 5-V power supply is sufficiently stable, the
REF3130 may be omitted.
3V
REF3130
+5V
Load
R1
4.99kW
R2
49.9kW
R6
71.5kW
RN
56W
V
1/2
OPA2333
RSHUNT
W
ILOAD
1
R3
4.99kW
R4
48.7kW
RN
56W
I2C
ADS1100
R7
1.18kW
(PGA Gain = 4)
FS = 3.0V
Stray Ground- Loop Resistance
NOTE: 1% resistors provide adequate common-mode rejection at small ground-loop errors.
Figure 5. Low-Side Current Monitor
RG
zener(A)
V+
RSHUNT
(B)
R1
10k
1/2
MOSFET rated to
standoff supply voltage
such as BSS84 for
up to 50 V.
W
OPA2333
+5V
V+
Two zener
biasing methods
are shown.(C)
Output
RBIAS
Load
RL
A. Zener rated for op amp supply capability (that is, 5.1 V for OPA2333).
B. Current-limiting resistor
C. Choose Zener biasing resistor or dual NMOSFETs (FDG6301N, NTJD4001N, or Si1034).
Figure 6. High-Side Current Monitor
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SBOS463A –DECEMBER 2008–REVISED JUNE 2010
www.ti.com
100 kW
60 kW
1 MW
3V
1/2
NTC
OPA2333
Thermistor
1 MW
Figure 7. Thermistor Measurement
V1
In
INA152
1/2
-
OPA2333
2
5
6
R2
VO
R1
R2
3
1
1/2
OPA2333
V2
+In
-
VO = (1 + 2R2/R1) (V2 V1)
Figure 8. Precision Instrumentation Amplifier
10
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OPA2333-Q1
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SBOS463A –DECEMBER 2008–REVISED JUNE 2010
+VS
fLPF = 150Hz
C4
R1
1/2
1.06nF
100kW
OPA2333
RA
R14
GTOT = 1kV/V
W
1M
R7
100kW
+VS
7
+VS
GINA = 5
R12
R6
100kW
+VS
3
2
5kW
R2
1/2
6
1
(A)
INA321
100kW
OPA2333
1/2
VOUT
LL
OPA2333
4
5
C3
µ
1 F
GOPA = 200
R13
R8
100kW
W
318k
+VS
+VS
dc
ac
R3
1/2
1/2
100kW
OPA2333
Wilson
OPA2333
LA
VCENTRAL
C1
(RA + LA + LL)/3
47pF
fHPF = 0.5Hz
(provides ac signal coupling)
1/2 VS
R5
W
390k
+VS
VS = +2.7V to +5.5V
BW = 0.5Hz to 150Hz
R9
20kW
+VS
R4
100kW
1/2
OPA2333
1/2
OPA2333
RL
Inverted
VCM
+VS
R10
W
1M
1/2 VS
R11
C2
W
1M
µ
0.64
F
fO = 0.5Hz
A. Other instrumentation amplifiers can be used, such as the INA326, which has lower noise, but higher quiescent
current.
Figure 9. Single-Supply, Very-Low-Power ECG Circuit
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PACKAGE OPTION ADDENDUM
www.ti.com
16-Aug-2012
PACKAGING INFORMATION
Status (1)
Eco Plan (2)
MSL Peak Temp (3)
Samples
Orderable Device
Package Type Package
Drawing
Pins
Package Qty
Lead/
Ball Finish
(Requires Login)
OPA2333AQDGKRQ1
OPA2333AQDRQ1
ACTIVE
ACTIVE
VSSOP
SOIC
DGK
D
8
8
2500
2500
TBD
TBD
Call TI
Call TI
Call TI
Call TI
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
OTHER QUALIFIED VERSIONS OF OPA2333-Q1 :
Catalog: OPA2333
•
NOTE: Qualified Version Definitions:
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
16-Aug-2012
Catalog - TI's standard catalog product
•
Addendum-Page 2
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