LPV321M7/NOPB [TI]
Single channel general purpose, low voltage, low power, rail-to-rail output operational amplifier 5-SC70 -40 to 85;
| 型号： | LPV321M7/NOPB |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | Single channel general purpose, low voltage, low power, rail-to-rail output operational amplifier 5-SC70 -40 to 85 运算放大器 放大器电路 光电二极管 信息通信管理 |
| 文件： | 总22页 (文件大小：1203K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LPV321,LPV324,LPV358
LPV321 Single/LPV358 Dual/LPV324 Quad General Purpose, Low Voltage, Low
Power, Rail-to-Rail Output Operational Amplifiers
Literature Number: SNOS413C
October 2006
LPV321 Single/LPV358 Dual/LPV324 Quad
General Purpose, Low Voltage, Low Power, Rail-to-Rail
Output Operational Amplifiers
General Description
Features
The LPV321/358/324 are low power (9 µA per channel at
5.0V) versions of the LMV321/358/324 op amps. This is
another addition to the LMV321/358/324 family of commod-
ity op amps.
(For V+ = 5V and V− = 0V, typical unless otherwise noted)
j
j
j
Guaranteed 2.7V and 5V performance
No crossover distortion
Space saving package
5-Pin SC70
The LPV321/358/324 are the most cost effective solutions
for the applications where low voltage, low power operation,
space saving and low price are needed. The LPV321/358/
324 have rail-to-rail output swing capability and the input
common-mode voltage range includes ground. They all ex-
hibit excellent speed-power ratio, achieving 5 kHz of band-
width with a supply current of only 9 µA.
2.0x2.1x1.0 mm
j
Industrial temperature
range
−40˚C to +85˚C
152 kHz
j
j
Gain-bandwidth product
Low supply current
LPV321
The LPV321 is available in space saving 5-Pin SC70, which
is approximately half the size of 5-Pin SOT23. The small
package saves space on PC boards, and enables the design
of small portable electronic devices. It also allows the de-
signer to place the device closer to the signal source to
reduce noise pickup and increase signal integrity.
9 µA
15 µA
28 µA
LPV358
LPV324
j
j
Rail-to-rail output swing
100 kΩ Load
V+−3.5 mV
V−+90 mV
−0.2V to V+−0.8V
@
The chips are built with National’s advanced submicron
silicon-gate BiCMOS process. The LPV321/358/324 have
bipolar input and output stages for improved noise perfor-
mance and higher output current drive.
VCM
Applications
n Active filters
n General purpose low voltage applications
n General purpose portable devices
Connection Diagrams
5-Pin
SC70/SOT23
8-Pin SOIC/MSOP
14-Pin SOIC/TSSOP
10092001
10092002
Top View
Top View
10092003
Top View
© 2006 National Semiconductor Corporation
DS100920
www.national.com
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Infrared or Convection (20 sec)
Storage Temperature Range
235˚C
−65˚C to 150˚C
150˚C
Junction Temp. (TJ, max) (Note 5)
ESD Tolerance (Note 2)
Human Body Model
Operating Ratings (Note 1)
Supply Voltage
Temperature Range
Thermal Resistance (θJA)(Note 10)
5-Pin SC70
2.7V to 5V
LPV324
LPV358
2000V
1500V
−40˚C to +85˚C
LPV321
1500V
478˚C/W
265˚C/W
190˚C/W
235˚C/W
145˚C/W
155˚C/W
Machine Model
100V
5-Pin SOT23
Differential Input Voltage
Supply Voltage
5.5V
8-Pin SOIC
−
Supply Voltage (V+–V
)
8-Pin MSOP
+
−
Output Short Circuit to V
Output Short Circuit to V
Soldering Information
(Note 3)
(Note 4)
14-Pin SOIC
14-Pin TSSOP
2.7V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 2.7V, V− = 0V, VCM = 1.0V, VO = V+/2 and R
1 MΩ.
>
L
Min
(Note 7)
Typ
(Note 6)
1.2
Max
(Note 7)
7
Symbol
VOS
Parameter
Input Offset Voltage
Input Offset Voltage Average
Drift
Conditions
Units
mV
TCVOS
2
µV/˚C
IB
Input Bias Current
1.7
0.6
70
50
40
nA
nA
dB
dB
IOS
Input Offset Current
Common Mode Rejection Ratio
Power Supply Rejection Ratio
CMRR
PSRR
0V ≤ VCM ≤ 1.7V
2.7V ≤ V+ ≤ 5V
50
50
65
VO = 1V, VCM = 1V
VCM
VO
IS
Input Common-Mode Voltage
Range
For CMRR ≥ 50 dB
0
−0.2
1.9
V+ −3
80
V
1.7
Output Swing
RL = 100 kΩ to 1.35V
V+ −100
mV
mV
µA
180
8
Supply Current
LPV321
4
LPV358
8
16
µA
Both Amplifiers
LPV324
16
24
µA
All Four Amplifiers
2.7V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 2.7V, V− = 0V, VCM = 1.0V, VO = V+/2 and R
1 MΩ.
>
L
Symbol
Parameter
Conditions
Min
(Note 7)
Typ
(Note 6)
112
Max
(Note 7)
Units
GBWP
Φm
Gain-Bandwidth Product
Phase Margin
CL = 22 pF
kHz
Deg
dB
97
Gm
Gain Margin
35
en
Input-Referred Voltage Noise
f = 1 kHz
f = 1 kHz
178
in
Input-Referred Current Noise
0.50
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2
5V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 5V, V− = 0V, VCM = 2.0V, VO = V+/2 and R
1 MΩ.
>
L
Boldface limits apply at the temperature extremes.
Min
(Note 7)
Typ
(Note 6)
1.5
Max
(Note 7)
Symbol
VOS
Parameter
Conditions
Units
Input Offset Voltage
7
mV
10
TCVOS
IB
Input Offset Voltage Average
Drift
2
2
µV/˚C
Input Bias Current
50
60
40
50
nA
nA
IOS
Input Offset Current
0.6
CMRR
PSRR
Common Mode Rejection Ratio
Power Supply Rejection Ratio
0V ≤ VCM ≤ 4V
2.7V ≤ V+ ≤ 5V
50
50
71
65
dB
dB
VO = 1V, VCM = 1V
VCM
AV
Input Common-Mode Voltage
Range
For CMRR ≥ 50 dB
0
−0.2
4.2
V
4
Large Signal Voltage Gain
(Note 8)
RL = 100 kΩ
15
100
V/mV
10
VO
Output Swing
RL = 100 kΩ to 2.5V
V+ −100
V+ −200
V+ −3.5
90
mV
180
220
IO
Output Short Circuit Current
Sourcing
LPV324, LPV358, and LPV321
VO = 0V
2
16
mA
mA
mA
µA
Output Short Circuit Current
Sinking
LPV321
20
11
60
VO = 5V
LPV324 and LPV358
VO = 5V
16
IS
Supply Current
LPV321
9
12
15
20
24
42
46
LPV358
15
µA
Both amplifiers
LPV324
28
µA
All four amplifiers
5V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25˚C, V+ = 5V, V− = 0V, VCM = 2.0V, VO = V+/2 and R
1MΩ.
>
L
Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 7)
Typ
(Note 6)
0.1
Min
(Note 7)
Units
SR
Slew Rate
(Note 9)
V/µs
kHz
Deg
dB
GBWP
Φm
Gain-Bandwidth Product
Phase Margin
CL = 22 pF
152
87
Gm
Gain Margin
19
en
Input-Referred Voltage Noise
f = 1 kHz,
f = 1 kHz
146
in
Input-Referred Current Noise
0.30
3
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5V AC Electrical Characteristics (Continued)
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human Body Model, applicable std. MIL-STD-883, Method 3015.7. Machine Model, applicable std. JESD22-A115-A (ESD MM std. of JEDEC)
Field-Induced Charge-Device Model, applicable std. JESD22-C101-C (ESD FICDM std. of JEDEC).
+
Note 3: Shorting output to V will adversely affect reliability.
−
Note 4: Shorting output to V will adversely affect reliability.
Note 5: The maximum power dissipation is
a
function of
T
, θ . The maximum allowable power dissipation at any ambient temperature is
J(MAX) JA
P
= (T – T )/ θ . All numbers apply for packages soldered directly onto a PC Board.
D
J(MAX)
A
JA
Note 6: Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and will
also depend on the application and configuration. The typical values are not tested and are not guaranteed on shipped production material.
Note 7: All limits are guaranteed by testing or statistical analysis.
-
Note 8: R is connected to V . The output voltage is 0.5V ≤ V ≤ 4.5V.
L
O
Note 9: Connected as voltage follower with 3V step input. Number specified is the slower of the positive and negative slew rates.
Note 10: All numbers are typical, and apply for packages soldered directly onto a PC board in still air.
Ordering Information
Temperature Range
Package
Industrial
−40˚C to +85˚C
LPV321M7
LPV321M7X
LPV321M5
LPV321M5X
LPV358M
Packaging Marking
Transport Media
NSC Drawing
A19
A19
1k Units Tape and Reel
3k Units Tape and Reel
1k Units Tape and Reel
3k Units Tape and Reel
Rails
5-Pin SC70
MAA05A
MF05A
M08A
A27A
5-Pin SOT23
8-Pin SOIC
A27A
LPV358M
LPV358M
P358
LPV358MX
LPV358MM
LPV358MMX
LPV324M
2.5k Units Tape and Reel
1k Units Tape and Reel
3.5k Units Tape and Reel
Rails
8-Pin MSOP
14-Pin SOIC
14-Pin TSSOP
MUA08A
M14A
P358
LPV324M
LPV324M
LPV324MT
LPV324MT
LPV324MX
LPV324MT
LPV324MTX
2.5k Units Tape and Reel
Rails
MTC14
2.5k Units Tape and Reel
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4
Typical Performance Characteristics Unless otherwise specified, VS = +5V, single supply,
TA = 25˚C.
Supply Current vs. Supply Voltage (LPV321)
Input Current vs. Temperature
100920B4
100920B5
Sourcing Current vs. Output Voltage
Sourcing Current vs. Output Voltage
10092041
10092042
Sinking Current vs. Output Voltage
Sinking Current vs. Output Voltage
10092043
10092044
5
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Typical Performance Characteristics Unless otherwise specified, VS = +5V, single supply,
TA = 25˚C. (Continued)
Input Voltage Noise vs.
Output Voltage Swing vs. Supply Voltage
Frequency
10092056
100920B6
Input Current Noise vs
Frequency
Input Current Noise vs Frequency
10092070
10092068
Crosstalk Rejection vs. Frequency
PSRR vs. Frequency
10092073
10092072
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6
Typical Performance Characteristics Unless otherwise specified, VS = +5V, single supply,
TA = 25˚C. (Continued)
CMRR vs. Frequency
CMRR vs. Input Common Mode Voltage
10092064
10092063
CMRR vs. Input Common Mode Voltage
∆VOS vs. VCM
10092065
10092045
∆VOS vs. VCM
Input Voltage vs. Output Voltage
10092069
10092046
7
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Typical Performance Characteristics Unless otherwise specified, VS = +5V, single supply,
TA = 25˚C. (Continued)
Input Voltage vs. Output Voltage
Open Loop Frequency Response
Gain and Phase vs. Capacitive Load
Slew Rate vs. Supply Voltage
10092071
10092052
Open Loop Frequency Response
10092051
10092054
Gain and Phase vs. Capacitive Load
10092053
10092055
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8
Typical Performance Characteristics Unless otherwise specified, VS = +5V, single supply,
TA = 25˚C. (Continued)
Non-Inverting Large Signal Pulse Response
Non-Inverting Small Signal Pulse Response
10092050
10092049
Inverting Large Signal Pulse Response
Inverting Small Signal Pulse Response
10092047
10092048
Stability vs. Capacitive Load
Stability vs. Capacitive Load
10092061
10092060
9
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Typical Performance Characteristics Unless otherwise specified, VS = +5V, single supply,
TA = 25˚C. (Continued)
Stability vs. Capacitive Load
Stability vs. Capacitive Load
10092059
10092058
THD vs. Frequency
Open Loop Output Impedance vs Frequency
10092074
10092062
Short Circuit Current vs. Temperature (Sinking)
Short Circuit Current vs. Temperature (Sourcing)
100920B7
100920B8
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10
Application Information
BENEFITS OF THE LPV321/358/324
Size
The small footprints of the LPV321/358/324 packages save
space on printed circuit boards, and enable the design of
smaller electronic products, such as cellular phones, pagers,
or other portable systems. The low profile of the LPV321/
358/324 make them possible to use in PCMCIA type III
cards.
10092004
FIGURE 1. Indirectly Driving A Capacitive Load Using
Resistive Isolation
Signal Integrity
Signals can pick up noise between the signal source and the
amplifier. By using a physically smaller amplifier package,
the LPV321/358/324 can be placed closer to the signal
source, reducing noise pickup and increasing signal integrity.
In Figure 1, the isolation resistor RISO and the load capacitor
CL form a pole to increase stability by adding more phase
margin to the overall system. The desired performance de-
pends on the value of RISO. The bigger the RISO resistor
value, the more stable VOUT will be. Figure 2 is an output
waveform of Figure 1 using 100 kΩ for RISO and 1000 pF for
CL.
Simplified Board Layout
These products help you to avoid using long pc traces in
your pc board layout. This means that no additional compo-
nents, such as capacitors and resistors, are needed to filter
out the unwanted signals due to the interference between
the long pc traces.
Low Supply Current
These devices will help you to maximize battery life. They
are ideal for battery powered systems.
Low Supply Voltage
National provides guaranteed performance at 2.7V and 5V.
These guarantees ensure operation throughout the battery
lifetime.
Rail-to-Rail Output
10092075
Rail-to-rail output swing provides maximum possible dy-
namic range at the output. This is particularly important
when operating on low supply voltages.
FIGURE 2. Pulse Response of the LPV324 Circuit in
Figure 1
Input Includes Ground
The circuit in Figure 3 is an improvement to the one in Figure
1 because it provides DC accuracy as well as AC stability. If
there were a load resistor in Figure 1, the output would be
voltage divided by RISO and the load resistor. Instead, in
Figure 3, RF provides the DC accuracy by using feed-
forward techniques to connect VIN to RL. Caution is needed
in choosing the value of RF due to the input bias current of
the LPV321/358/324. CF and RISO serve to counteract the
loss of phase margin by feeding the high frequency compo-
nent of the output signal back to the amplifier’s inverting
input, thereby preserving phase margin in the overall feed-
back loop. Increased capacitive drive is possible by increas-
ing the value of CF. This in turn will slow down the pulse
response.
Allows direct sensing near GND in single supply operation.
The differential input voltage may be larger than V+ without
damaging the device. Protection should be provided to pre-
vent the input voltages from going negative more than −0.3V
(at 25˚C). An input clamp diode with a resistor to the IC input
terminal can be used.
CAPACITIVE LOAD TOLERANCE
The LPV321/358/324 can directly drive 200 pF in unity-gain
without oscillation. The unity-gain follower is the most sensi-
tive configuration to capacitive loading. Direct capacitive
loading reduces the phase margin of amplifiers. The combi-
nation of the amplifier’s output impedance and the capacitive
load induces phase lag. This results in either an under-
damped pulse response or oscillation. To drive a heavier
capacitive load, circuit in Figure 1 can be used.
11
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Application Information (Continued)
10092007
10092005
FIGURE 3. Indirectly Driving A Capacitive Load with
DC Accuracy
INPUT BIAS CURRENT CANCELLATION
The LPV321/358/324 family has a bipolar input stage. The
typical input bias current of LPV321/358/324 is 1.5 nA with
5V supply. Thus a 100 kΩ input resistor will cause 0.15 mV
of error voltage. By balancing the resistor values at both
inverting and non-inverting inputs, the error caused by the
amplifier’s input bias current will be reduced. The circuit in
Figure 4 shows how to cancel the error caused by input bias
current.
FIGURE 5. Difference Amplifier
Instrumentation Circuits
The input impedance of the previous difference amplifier is
set by the resistor R1, R2, R3, and R4. To eliminate the
problems of low input impedance, one way is to use a
voltage follower ahead of each input as shown in the follow-
ing two instrumentation amplifiers.
Three-op-amp Instrumentation Amplifier
The quad LPV324 can be used to build a three-op-amp
instrumentation amplifier as shown in Figure 6
10092006
FIGURE 4. Cancelling the Error Caused by Input Bias
Current
TYPICAL SINGLE-SUPPLY APPLICATION CIRCUITS
Difference Amplifier
10092085
The difference amplifier allows the subtraction of two volt-
ages or, as a special case, the cancellation of a signal
common to two inputs. It is useful as a computational ampli-
fier, in making a differential to single-ended conversion or in
rejecting a common mode signal.
FIGURE 6. Three-op-amp Instrumentation Amplifier
The first stage of this instrumentation amplifier is
a
differential-input, differential-output amplifier, with two volt-
age followers. These two voltage followers assure that the
input impedance is over 100 MΩ. The gain of this instrumen-
tation amplifier is set by the ratio of R2/R1. R3 should equal
R1 and R4 equal R2. Matching of R3 to R1 and R4 to R2
affects the CMRR. For good CMRR over temperature, low
drift resistors should be used. Making R4 Slightly smaller
than R and adding a trim pot equal to twice the difference
2
between R and R4 will allow the CMRR to be adjusted for
2
optimum.
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12
ACTIVE FILTER
Application Information (Continued)
Simple Low-Pass Active Filter
Two-op-amp Instrumentation Amplifier
The simple low-pass filter is shown in Figure 9. Its low-
A two-op-amp instrumentation amplifier can also be used to
make a high-input-impedance DC differential amplifier (Fig-
ure 7). As in the three-op-amp circuit, this instrumentation
amplifier requires precise resistor matching for good CMRR.
R4 should equal to R1 and R3 should equal R2.
→
frequency gain(ω
o) is defined by −R3/R1. This allows
low-frequency gains other than unity to be obtained. The
filter has a −20 dB/decade roll-off after its corner frequency
fc. R2 should be chosen equal to the parallel combination of
R1 and R3 to minimize errors due to bais current. The
frequency response of the filter is shown in Figure 10
10092011
10092014
FIGURE 7. Two-op-amp Instrumentation Amplifier
Single-Supply Inverting Amplifier
There may be cases where the input signal going into the
amplifier is negative. Because the amplifier is operating in
single supply voltage, a voltage divider using R3 and R4 is
implemented to bias the amplifier so the input signal is within
the input common-common voltage range of the amplifier.
The capacitor C1 is placed between the inverting input and
resistor R1 to block the DC signal going into the AC signal
source, VIN. The values of R1 and C1 affect the cutoff fre-
quency, fc = 1/2π R 1C1.
FIGURE 9. Simple Low-Pass Active Filter
As a result, the output signal is centered around mid-supply
(if the voltage divider provides V+/2 at the non-inverting
input). The output can swing to both rails, maximizing the
signal-to-noise ratio in a low voltage system.
10092015
FIGURE 10. Frequency Response of Simple Low-pass
Active Filter in Figure 9
Note that the single-op-amp active filters are used in to the
applications that require low quality factor, Q (≤ 10), low
frequency (≤ 5 kHz), and low gain (≤ 10), or a small value for
the product of gain times Q (≤ 100). The op amp should have
an open loop voltage gain at the highest frequency of inter-
est at least 50 times larger than the gain of the filter at this
frequency. In addition, the selected op amp should have a
slew rate that meets the following requirement:
10092013
Slew Rate ≥ 0.5 x (ωHV OPP) X 10−6V/µsec
FIGURE 8. Single-Supply Inverting Amplifier
Where ωH is the highest frequency of interest, and VOPP is
the output peak-to-peak voltage.
13
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SC70-5 Tape and Reel Specification
100920B3
SOT-23-5 Tape and Reel Specification
TAPE FORMAT
Tape Section
Leader
# Cavities
0 (min)
75 (min)
3000
Cavity Status
Empty
Cover Tape Status
Sealed
(Start End)
Carrier
Empty
Sealed
Filled
Sealed
250
Filled
Sealed
Trailer
125 (min)
0 (min)
Empty
Sealed
(Hub End)
Empty
Sealed
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14
SOT-23-5 Tape and Reel Specification (Continued)
TAPE DIMENSIONS
100920B1
8 mm
0.130
(3.3)
0.124
(3.15)
0.130
(3.3)
0.126
(3.2)
0.138 0.002
(3.5 0.05)
DIM F
0.055 0.004
(1.4 0.11)
DIM Ko
0.157
(4)
0.315 0.012
(8 0.3)
Tape Size
DIM A
DIM Ao
DIM B
DIM Bo
DIM P1
DIM W
15
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SOT-23-5 Tape and Reel Specification (Continued)
REEL DIMENSIONS
100920B2
8 mm
7.00 0.059 0.512 0.795 2.165 0.331 + 0.059/−0.000 0.567
W1+ 0.078/−0.039
W1 + 2.00/−1.00
W3
330.00 1.50 13.00 20.20 55.00
8.40 + 1.50/−0.00
14.40
Tape Size
A
B
C
D
N
W1
W2
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16
Physical Dimensions
Physical Dimensions inches (millimeters) unless otherwise noted
5-Pin SC70
NS Package Number MAA05A
5-Pin SOT23
NS Package Number MF05A
17
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
8-Pin SOIC
NS Package Number M08A
8-Pin MSOP
NS Package Number MUA08A
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18
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
14-Pin SOIC
NS Package Number M14A
14-Pin TSSOP
NS Package Number MTC14
19
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Notes
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves
the right at any time without notice to change said circuitry and specifications.
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