OPA
2341
OPA341
OPA2341
OPA
341
SBOS202A – AUGUST 2001
SINGLE-SUPPLY, RAIL-TO-RAIL
OPERATIONAL AMPLIFIER WITH SHUTDOWN
microAmplifier ™ Series
FEATURES
APPLICATIONS
●
●
●
●
●
●
●
●
●
●
●
●
RAIL-TO-RAIL INPUT AND OUTPUT SWING
MicroSIZE PACKAGES
BANDWIDTH: 5.5MHz
SLEW RATE: 6V/µs
QUIESCENT CURRENT: 750µA/Chan
POWER SHUTDOWN MODE
DESCRIPTION
The OPA341 series rail-to-rail CMOS operational amplifiers
are designed for low-cost, miniature applications. They are
optimized for low-voltage, single-supply operation. Rail-to-rail
input and output and high-speed operation make them ideal for
driving sampling Analog-to-Digital (A/D) converters.
The power-saving shutdown feature makes the OPA341
ideal for portable low-power applications. The OPA341
series is also well suited for general-purpose and audio
applications as well as providing I/V conversion at the
output of Digital-to-Analog (D/A) converters. Single and
dual versions have identical specifications for design flexibility.
OPA341
SENSOR BIASING
SIGNAL CONDITIONING
DATA ACQUISITION
PROCESS CONTROL
ACTIVE FILTERS
TEST EQUIPMENT
The OPA341 series operate on a single supply as low as 2.5V,
and input common-mode voltage range extends 300mV beyond
the supply rails. Output voltage swings to within 1mV of the
supply rails with a 100kΩ load. The OPA341 series offers
excellent dynamic response (BW = 5.5MHz, SR = 6V/µs) with
a quiescent current of only 750µA. The dual design features
completely independent circuitry for lowest crosstalk and freedom from interaction.
The single (OPA341) packages are the tiny SOT23-6 surface
mount and SO-8 surface mount. The dual (OPA2341) comes
in the miniature MSOP-10 surface mount. All are specified
from –55°C to +125°C and operate from –55°C to +150°C.
The OPA343 provides similar performance without shutdown capability.
OPA2341
OPA341
Out 1
6
V+
NC
1
8
SD
Out A
1
10 V+
V– 2
5
SD
–In
2
7
V+
–In A
2
9
Out B
+In 3
4
–In
+In
3
6
Out
+In A
3
8
–In B
V–
4
5
NC
V–
4
7
+In B
SD A
5
6
SD B
SOT23-6 (N)
SO-8 (U)
MSOP-10 (DGS)
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.
Copyright © 2001, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
www.ti.com
ABSOLUTE MAXIMUM RATINGS(1)
ELECTROSTATIC
DISCHARGE SENSITIVITY
Supply Voltage, V+ to V– ................................................................... 6.0V
Input Voltage Range(2) ................................... (V–) – 0.5V to (V+) + 0.5V
Input Terminal(3) ............................................................................... 10mA
Output Short Circuit(3) .............................................................. Continuous
Operating Temperature .................................................. –55°C to +150°C
Storage Temperature ..................................................... –65°C to +150°C
Junction Temperature ...................................................................... 150°C
Lead Temperature (soldering, 10s) ................................................. 300°C
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade device reliability. (2) Input terminals are diode-clamped to the power
supply rails. Input signals that can swing more than 0.5V beyond the supply
rails should be current-limited to 10mA or less. (3) Short-circuit to ground,
one amplifier per package.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION
PRODUCT
PACKAGE
PACKAGE
DRAWING
NUMBER
OPA341NA
SOT23-6
332
"
"
SO-8
182
OPA341UA
"
—
—
–55°C to +125°C
"
"
"
MSOP-10
4073272
DGS
–55°C to +125°C
C41
"
"
"
"
"
"
OPA341UA
"
OPA2341DGSA
"
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
MARKING
ORDERING
NUMBER(1)
TRANSPORT
MEDIA
—
—
–55°C to +125°C
B41
"
"
OPA341NA/250
OPA341NA/3K
Tape and Reel
Tape and Reel
OPA341UA
OPA341UA/2K5
Rails
Tape and Reel
OPA2341DGSA/250
OPA2341DGSA/2K5
Tape and Reel
Tape and Reel
PACKAGE
DESIGNATOR
NOTE: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /3K indicates 3000 devices per reel). Ordering 3000 pieces
of “OPA341NA/3K” will get a single 3000-piece Tape and Reel..
2
OPA341, 2341
SBOS202A
ELECTRICAL CHARACTERISTICS: VS = 2.7V to 5.5V
Boldface limits apply over the specified temperature range, TA = –55°C to +125°C.
At TA = +25°C, RL = 10kΩ connected to VS / 2 and VOUT = VS / 2, VENABLE = VDD, unless otherwise noted.
OPA341NA, UA
OPA2341DGSA
PARAMETER
OFFSET VOLTAGE
Input Offset Voltage
Drift
vs Power Supply
Over Temperature
Channel Separation, dc
CONDITION
VOS
dVOS/dT
PSRR
VS = 5V
VS = 2.7V to 5.5V, VCM = 0V
VS = 2.7V to 5.5V, VCM = 0V
NOISE
Input Voltage Noise, f = 0.1Hz to 50kHz
Input Voltage Noise Density, f = 1kHz
Input Current Noise Density, f = 1kHz
mV
µV/°C
µV/V
µV/V
µV/V
en
in
8
25
3
VCM
CMRR
AOL
200
200
VS = 5V, (V–) – 0.3V < VCM < (V+) – 1.8V
VS = 5V, (V–) – 0.1V < VCM < (V+) – 1.8V
VS = 5V, (V–) – 0.3V < VCM < (V+) + 0.3V
VS = 5V, (V–) – 0.1V < VCM < (V+) + 0.1V
VS = 2.7V, (V–) – 0.3V < VCM < (V+) + 0.3V
VS = 2.7V, (V–) – 0.1V < VCM < (V+) + 0.1V
(V–) – 0.3
(V–) – 0.1
76
74
60
58
57
55
RL = 100kΩ, (V–) + 5mV < VO < (V+) – 5mV
RL = 100kΩ, (V–) + 5mV < VO < (V+) – 5mV
RL = 2kΩ, (V–) + 200mV < VO < (V+) – 200mV
RL = 2kΩ, (V–) + 200mV < VO < (V+) – 200mV
100
100
96
94
±10
2000
±10
pA
pA
pA
µVrms
nV/√Hz
fA/√Hz
(V+) + 0.3
(V+) + 0.1
90
74
70
V
V
dB
dB
dB
dB
dB
dB
1013 || 3
1013 || 6
Ω || pF
Ω || pF
120
dB
dB
dB
dB
110
VS = 5V
GBW
SR
tS
THD+N
OUTPUT
Voltage Output Swing from Rail
Over Temperature
5.5
6
1
1.6
0.2
0.0007
G = +1, CL = 100pF
VS = 5V, 2V Step, G = +1, CL = 100pF
VS = 5V, 2V Step, G = +1, CL = 100pF
VIN • Gain ≤ VS
VS = 5V, VO = 3Vp-p(1), G = +1, f = 1kHz
RL = 100kΩ, AOL > 100dB
RL = 100kΩ, AOL > 100dB
RL = 2kΩ, AOL > 96dB
RL = 2kΩ, AOL > 94dB
ISC
CLOAD
SHUTDOWN
tOFF
tON
VL (Shutdown)
VH (Amplifier is Active)
IQSD
TEMPERATURE RANGE
Specified Range
Operating Range
Storage Range
Thermal Resistance
SOT-23-6 Surface Mount
MSOP-10 Surface Mount
SO-8 Surface Mount
±6
±0.2
Over Temperature
POWER SUPPLY
Specified Voltage Range
Operating Voltage Range
Quiescent Current (per amplifier)
Over Temperature
±2
±2
40
IOS
INPUT IMPEDANCE
Differential
Common-Mode
Over Temperature
Short-Circuit Current
Capacitive Load Drive
UNITS
±0.6
Over Temperature
FREQUENCY RESPONSE
Gain-Bandwidth Product
Slew Rate
Settling Time, 0.1%
0.01%
Overload Recovery Time
Total Harmonic Distortion + Noise
MAX
IB
Over Temperature
OPEN-LOOP GAIN
Open-Loop Voltage Gain
Over Temperature
TYP
0.2
INPUT BIAS CURRENT
Input Bias Current
Over Temperature
Input Offset Current
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection Ratio
Over Temperature
MIN
1
40
MHz
V/µs
µs
µs
µs
%
5
5
200
200
±50
See Typical Characteristics
1
3
V–
(V–) + 2
(V–) + 0.8
V+
10
VS
IQ
2.7
5.5
2.5 to 5.5
0.75
IO = 0, VS = 5V
–55
–55
–65
1.0
1.2
125
150
150
θJA
200
150
150
mV
mV
mV
mV
mA
µs
µs
V
V
nA
V
V
mA
mA
°C
°C
°C
°C/W
°C/W
°C/W
°C/W
NOTE: (1) VOUT = 0.25V to 3.25V.
OPA341, 2341
SBOS202A
3
TYPICAL CHARACTERISTICS
At TA = +25°C, VENABLE = VDD, VS = +5V, RL = 10kΩ, unless otherwise noted.
POWER-SUPPLY AND COMMON-MODE
REJECTION vs FREQUENCY
OPEN-LOOP GAIN/PHASE vs FREQUENCY
160
100
0
PSRR
140
120
80
PSRR, CMRR (dB)
–45
80
–90
60
Phase (°)
AOL (dB)
100
40
–135
20
60
40
CMRR
VCM = –0.3V to (V+) –1.8V
20
0
–180
–20
0.1
10
1
100
1k
10k
100k
1M
0
10M
1
10
100
1k
10k
100k
Frequency (Hz)
Frequency (Hz)
INPUT VOLTAGE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
TOTAL HARMONIC DISTORTION + NOISE
vs FREQUENCY
1k
10k
1M
0.1
RL = 600
Voltage Noise
10
100
1
10
RL = 2k
0.01
THD+N (%)
100
1k
Current Noise (fA√Hz)
Voltage Noise (nV√Hz)
Current Noise
G = 10
RL = 10k
RL = 600
0.001
RL = 10k
0.1
1
1
10
100
1k
10k
100k
0.0001
1M
20
100
Frequency (Hz)
1k
10k
20k
Frequency (Hz)
CLOSED-LOOP OUTPUT RESISTANCE
vs FREQUENCY
CHANNEL SEPARATION vs FREQUENCY
150
20000
G = 100
140
Channel Separation (dB)
Output Resistance (Ω)
RL = 2k
G=1
15000
G = 10
10000
G=1
5000
130
VS = 2.7V
120
110
100
90
80
70
0
60
10
1k
100k
Frequency (Hz)
4
1M
10
100
1k
10k
100k
Frequency (Hz)
OPA341, 2341
SBOS202A
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, VENABLE = VDD, VS = +5V, RL = 10kΩ, unless otherwise noted.
OPEN-LOOP GAIN AND PSRR
vs TEMPERATURE
CMRR vs TEMPERATURE
100
160
120
90
RL = 100kΩ
AOL
AOL
100
RL = 2kΩ
80
VS = 5V, (V–) – 0.3V < VCM < (V+) – 1.8V
CMRR (dB)
AOL, CMRR, PSRR (dB)
140
80
PSRR
VS = 5V, (V–) – 0.3V < VCM < (V+) + 0.3V
70
60
VS = 2.7V, (V–) – 0.3V < VCM < (V+) + 0.3V
60
40
–75
–25
25
75
125
–75
150
–25
25
75
125
150
Temperature (°C)
Temperature (°C)
QUIESCENT CURRENT vs SUPPLY VOLTAGE
QUIESCENT CURRENT vs TEMPERATURE
0.80
1.20
Quiescent Current (mA)
Quiescent Current (mA)
1.00
0.80
0.60
0.40
0.75
0.70
0.65
0.20
0.60
0.00
–75
–25
25
75
125
2
150
3
SHORT-CIRCUIT CURRENT vs TEMPERATURE
5
6
SHORT-CIRCUIT CURRENT vs SUPPLY VOLTAGE
100
60
90
58
–ISC
Short-Circuit Current (mA)
Short-Circuit Current (mA)
4
Supply Voltage (V)
Temperature (°C)
80
70
60
50
+ISC
40
30
20
56
–ISC
54
52
50
+ISC
48
46
44
42
10
40
0
–75
–25
25
75
Temperature (°C)
OPA341, 2341
SBOS202A
125
150
2
3
4
5
6
Supply Voltage (V)
5
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, VENABLE = VDD, VS = +5V, RL = 10kΩ, unless otherwise noted.
INPUT BIAS CURRENT
vs INPUT COMMON-MODE VOLTAGE
INPUT BIAS vs TEMPERATURE
2
1.5
1000
Input Bias Current (pA)
Input Bias Current (pA)
10000
100
10
1
1
0.5
0
–0.5
–1
0.1
–75
–25
25
75
125
150
–1
0
Temperature (°C)
OUTPUT VOLTAGE SWING vs OUTPUT CURRENT
+25°C
–55°C
Output Voltage (Vp-p)
Output Voltage (V)
3
2
+125°C
0
0
±10
±30 ±40
5
6
±50 ±60
VS = 5.5V
Maximum output
voltage without
slew rate-induced
distortion.
4
3
VS = 2.7V
2
0
100k
±70 ±80 ±90 ±100
Output Current (mA)
1M
10M
Frequency (Hz)
VOS DRIFT DISTRIBUTION
VOS PRODUCTION DISTRIBUTION
35
25
Typical distribution
of packaged units.
20
30
Percent of Amplifiers (%)
Percent of Amplifiers (%)
4
1
–55°C
+25°C
±20
3
5
4
1
2
MAXIMUM OUTPUT VOLTAGE vs FREQUENCY
6
5
+125°C
1
Common-Mode Voltage (V)
15
10
5
Typical distribution
of packaged units.
25
20
15
10
5
0
0
–6 –5 –4 –3
–2 –1
0
1
2
Offset Voltage (mV)
6
3
4
5
6
0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5
Offset Voltage Drift (µV/°C)
OPA341, 2341
SBOS202A
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, VENABLE = VDD, VS = +5V, RL = 10kΩ, unless otherwise noted.
SHUTDOWN CURRENT vs TEMPERATURE
SHUTDOWN CURRENT vs POWER SUPPLY
20
12
Shutdown Current (pA)
Shutdown Current (nA)
11
15
10
5
10
9
8
7
6
5
VENABLE = VSS
VENABLE = VSS
4
0
–75
–25
25
75
125
150
2
3
Temperature (°C)
4
5
6
Supply Voltage (V)
SHUTDOWN CURRENT vs POWER SUPPLY
SHUTDOWN CURRENT vs SHUTDOWN VOLTAGE
3.25
35
Shutdown Current (nA)
Shutdown Current (nA)
30
3.00
2.75
25
20
15
10
5
VENABLE = VSS + 0.8V
VS = 5V
2.50
0
2
3
4
5
6
0.0
0.2
Supply Voltage (V)
0.6
0.8
1.0
VENABLE (V)
QUIESCENT CURRENT vs VENABLE
QUIESCENT CURRENT vs VENABLE
0.8
0.8
0.7
0.7
Quiescent Current (mA)
Quiescent Current (mA)
0.4
0.6
0.5
0.4
0.3
0.2
0.1
0.6
0.5
0.4
0.3
0.2
0.1
VS = 2.7V
VS = 5.5V
0
0
0.0
0.4
0.8
1.2
VENABLE (V)
OPA341, 2341
SBOS202A
1.6
2.0
0.0
0.4
0.8
1.2
1.6
2.0
VENABLE (V)
7
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, VENABLE = VDD, VS = +5V, RL = 10kΩ, unless otherwise noted.
SETTLING TIME vs CLOSED-LOOP GAIN
(2VStep G = +1)
SMALL-SIGNAL OVERSHOOT
vs LOAD CAPACITANCE
60
100
G = +1
50
Overshoot (%)
Settling Time (µs)
G = +5
G = –1
40
30
G = –5
20
0.01%
10
0.1%
1
10
0
0.1
100
1k
10k
1
10
100
1000
Closed-Loop Gain (V/V)
SMALL-SIGNAL STEP RESPONSE
LARGE-SIGNAL STEP RESPONSE
1V/div
50mV/div
Load Capacitance (pF)
1µs/div
1µs/div
SHUT-DOWN RESPONSE
TURN-ON RESPONSE
VENABLE
1mA/div
Supply Current
Supply Current
2µs/div
8
Output Voltage
1V/div
Output Voltage
500µA/div
1V/div
VENABLE
2µs/div
OPA341, 2341
SBOS202A
APPLICATIONS INFORMATION
OPERATING VOLTAGE
OPA341 series op amps are fully specified from +2.7V to
+5.5V. However, supply voltage may range from +2.5V to
+5.5V. Parameters are tested over the specified supply
range—a unique feature of the OPA341 series. In addition,
many specifications apply from –55°C to +125°C. Most
behavior remains virtually unchanged throughout the full
operating voltage range. Parameters that vary significantly
with operating voltages or temperature are shown in the
Typical Characteristics.
OPA341 series op amps are fabricated on a state-of-the-art
0.6-micron CMOS process. They are unity-gain stable and
suitable for a wide range of general-purpose applications.
Rail-to-rail I/O make them ideal for driving sampling A/D
converters. In addition, excellent ac performance makes
them well suited for audio applications. The class AB output
stage is capable of driving 600Ω loads connected to any point
between V+ and ground. Rail-to-rail input and output swing
significantly increases dynamic range, especially in lowsupply applications. Figure 1 shows the input and output
waveforms for the OPA341 in unity-gain configuration.
Operation is from a single +5V supply with a 10kΩ load
connected to VS /2. The input is a 5Vp-p sinusoid. Output
voltage is approximately 4.98Vp-p. Power-supply pins should
be bypassed with 0.01µF ceramic capacitors.
RAIL-TO-RAIL INPUT
The input common-mode voltage range of the OPA341
series extends 300mV beyond the supply rails. This is achieved
with a complementary input stage—an N-channel input differential pair in parallel with a P-channel differential pair, as
shown in Figure 2. The N-channel pair is active for input
voltages close to the positive rail, typically (V+) – 1.3V to
300mV above the positive supply. The P-channel pair is on
for inputs from 300mV below the negative supply to approximately (V+) – 1.3V.
VS = 5, G = +1, RL = 10kΩ
There is a small transition region, typically (V+) – 1.5V to
(V+) – 1.1V, in which both input pairs are on. This 400mV
transition region can vary ±300mV with process variation.
Thus, the transition region (both stages on) can range from
(V+) – 1.8V to (V+) – 1.4V on the low end, up to (V+) – 1.2V
to (V+) – 0.8V on the high end. Within the 400mV transition
region PSRR, CMRR, offset voltage, offset drift, and THD
may be degraded compared to operation outside this region.
VIN
2V/div
VOUT
20µs/div
FIGURE 1. Rail-to-Rail Input and Output.
V+
Reference
Current
VIN+
VIN–
VBIAS1
Class AB
Control
Circuitry
VO
VBIAS2
ENABLE (CMOS Input)
On = High
Off = Low
V–
(Ground)
FIGURE 2. Simplified Schematic.
OPA341, 2341
SBOS202A
9
A double-folded cascode adds the signal from the two input
pairs and presents a differential signal to the class AB output
stage. Normally, input bias current is approximately 600fA,
however, input voltages exceeding the power supplies by
more than 300mV can cause excessive current to flow in or
out of the input pins. Momentary voltages greater than
300mV beyond the power supply can be tolerated if the
current on the input pins is limited to 10mA. This is easily
accomplished with an input resistor, as shown in Figure 3.
Many input signals are inherently current-limited to less
than 10mA, therefore, a limiting resistor is not required.
V+
IOVERLOAD
10mA max
capacitive load reacts with the op amp’s output resistance,
along with any additional load resistance, to create a pole in
the small-signal response which degrades the phase margin.
In unity gain, OPA341 series op amps perform well, with a
pure capacitive load up to approximately 1000pF. Increasing
gain enhances the amplifier’s ability to drive more capacitance. See the typical characteristic “Small-Signal Overshoot vs Capacitive Load.”
One method of improving capacitive load drive in the unitygain configuration is to insert a 10Ω to 20Ω resistor in series
with the output, as shown in Figure 4. This significantly
reduces ringing with large capacitive loads. However, if there
is a resistive load in parallel with the capacitive load, RS
creates a voltage divider. This introduces a DC error at the
output and slightly reduces output swing. This error may be
insignificant. For instance, with RL = 10kΩ and RS = 20Ω,
there is only about a 0.2% error at the output.
VOUT
OPAx341
VIN
FIGURE 3. Input Current Protection for Voltages Exceeding
the Supply Voltage.
RAIL-TO-RAIL OUTPUT
A class AB output stage with common-source transistors is
used to achieve rail-to-rail output. For light resistive loads
(> 50kΩ), the output voltage is typically a few millivolts
from the supply rails. With moderate resistive loads (2kΩ to
50kΩ), the output can swing to within a few tens of millivolts from the supply rails and maintain high open-loop
gain. See the typical characteristic “Output Voltage Swing
vs Output Current.”
CAPACITIVE LOAD AND STABILITY
OPA341 series op amps can drive a wide range of capacitive
loads. However, all op amps under certain conditions may
become unstable. Op amp configurations, gain, and load
value are just a few of the factors to consider when determining stability. An op amp in unity-gain configuration is the
most susceptible to the effects of capacitive load. The
DRIVING A/D CONVERTERS
OPA341 series op amps are optimized for driving medium
speed (up to 100kHz) sampling A/D converters. However,
they also offer excellent performance for higher-speed converters. The OPA341 series provides an effective means of
buffering the A/D converter’s input capacitance and resulting charge injection while providing signal gain. For applications requiring high accuracy, the OPA340 series is recommended.
The OPA341 implements a power-saving shutdown feature
particularly useful for low-power sampling applications. Figure 5
shows the OPA341 driving the ADS7816, a 12-bit micro-power
sampling converter available in the tiny MSOP-8 package. With
the OPA341 in non-inverting configuration, an RC network at the
amplifier’s output is used as an anti-aliasing filter. By tying the
enable of the OPA341 to the shutdown of the ADS7816, additional power-savings can be used for sampling applications. To
effectively drive the ADS7816, timing delay was introduced
between the two devices, see Figure 5. Alternative applications
may need additional timing adjustments.
Figure 6 shows the OPA341 configured as a speech bandpass filter. Figure 7 shows the OPA341 configured as a
transimpedance amplifier.
V+
RS
VOUT
OPAx341
10Ω to
20Ω
VIN
RL
CL
VENABLE
FIGURE 4. Series Resistor in Unity-Gain Configuration Improves Capacitive Load Drive.
10
OPA341, 2341
SBOS202A
+5V
0.1µF
RC Anti-Aliasing
Filter
500Ω
OPA341
10kΩ
1 VREF
8 V+
+In
2
VIN
0.1µF
–In
3300pF 3
DCLOCK
ADS7816
12-Bit A/D
Converter
DOUT
CS/SHDN
7
6
5
Serial
Interface
GND 4
VIN = 0V to 5V for
0V to 5V output.
ENABLE
Timing
Logic
NOTE: A/D Input = 0 to VREF
1.6µs
3µs
15µs
OA
OA
Enable Settling Anti-Aliasing Filter Settling
OPA341 SD
1µs
ADS7816 CS/SHDN
5µs
FIGURE 5. OPA341 in Noninverting Configuration Driving the ADS7816 with Timing Diagram.
+5V
Filters 160Hz to 2.4kHz
10MΩ
200pF
VIN
10MΩ
1/2
OPA2341
243kΩ
1.74MΩ
47pF
1/2
OPA2341
220pF
RL
ENABLE A
ENABLE B
FIGURE 6. Speech Bandpass Filter.
< 1pF (prevents gain peaking)
10MΩ
V+
λ
OPA341
VO
ENABLE
FIGURE 7. Transimpedance Amplifier.
OPA341, 2341
SBOS202A
11
PACKAGE OPTION ADDENDUM
www.ti.com
6-Feb-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
OPA2341DGSA/250
ACTIVE
VSSOP
DGS
10
250
Green (RoHS
& no Sb/Br)
NIPDAUAG
Level-2-260C-1 YEAR
-55 to 125
C41
OPA341NA/250
ACTIVE
SOT-23
DBV
6
250
Green (RoHS
& no Sb/Br)
NIPDAU
Level-2-260C-1 YEAR
-55 to 125
B41
OPA341NA/250G4
ACTIVE
SOT-23
DBV
6
250
Green (RoHS
& no Sb/Br)
NIPDAU
Level-2-260C-1 YEAR
-55 to 125
B41
OPA341NA/3K
ACTIVE
SOT-23
DBV
6
3000
Green (RoHS
& no Sb/Br)
NIPDAU
Level-2-260C-1 YEAR
-55 to 125
B41
OPA341UA
ACTIVE
SOIC
D
8
75
Green (RoHS
& no Sb/Br)
NIPDAU
Level-2-260C-1 YEAR
-55 to 125
OPA
341UA
(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)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
工商网监
湘ICP备2023018690号
