TI1 LMV604MA 1 mhz, low power general purpose, 2.7v operational amplifier Datasheet

LMV601/LMV602/LMV604
1 MHz, Low Power General Purpose, 2.7V Operational
Amplifiers
General Description
Features
The LMV601/LMV602/LMV604 are single, dual, and quad low
voltage, low power Operational Amplifiers. They are designed
specifically for low voltage general purpose applications. Other important product characteristics are low input bias current,
rail-to-rail output, and wide temperature range. The LMV601/
LMV602/LMV604 have 29nV Voltage Noise at 10KHz, 1MHz
GBW, 1.0V/μs Slew Rate, 0.25mV Vos. The LMV601/2/4 operates from a single supply voltage as low as 2.7V, while
drawing 100uA (typ) quiescent current. In shutdown mode the
current can be reduced to 45pA.
The industrial-plus temperature range of −40°C to 125°C allows the LMV601/LMV602/LMV604 to accommodate a broad
range of extended environment applications.
The LMV601 offers a shutdown pin that can be used to disable
the device. Once in shutdown mode, the supply current is reduced to 45pA (typical).
The LMV601 is offered in the tiny 6-Pin SC70 package, the
LMV602 in space saving 8-Pin MSOP and SOIC, and the
LMV604 in 14-Pin TSSOP and SOIC. These small package
amplifiers offer an ideal solution for applications requiring
minimum PCB footprint. Applications with area constrained
PC board requirements include portable and battery operated
electronics.
(Typical 2.7V supply values; unless otherwise noted)
■ Guaranteed 2.7V and 5V specifications
100μA
■ Supply current (per amplifier)
1.0MHz
■ Gain bandwidth product
45pA
■ Shutdown Current (LMV601)
5μs
■ Turn-on time from shutdown (LMV601)
20fA
■ Input bias current
Applications
■
■
■
■
■
■
■
■
■
■
Cordless/cellular phones
Laptops
PDAs
PCMCIA/Audio
Portable/battery-powered electronic equipment
Supply current monitoring
Battery monitoring
Buffer
Filter
Driver
Sample and Hold Circuit
30185544
© 2012 Texas Instruments Incorporated
301855 SNOSC70A
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LMV601/LMV602/LMV604 1 MHz, Low Power General Purpose, 2.7V Operational Amplifiers
May 31, 2012
LMV601/LMV602/LMV604
Infrared or Convection Reflow
(20 sec.)
Wave Soldering Lead Temp.
(10 sec.)
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the Texas Instruments Sales Office/
Distributors for availability and specifications.
ESD Tolerance (Note 2)
Machine Model
Human Body Model
Differential Input Voltage
Supply Voltage (V + -V −)
Output Short Circuit to V +
Output Short Circuit to V −
Storage Temperature Range
Junction Temperature (Note 5)
Mounting Temperature
Operating Ratings
200V
2000V
± Supply Voltage
6.0V
(Note 3)
(Note 4)
−65°C to 150°C
150°C
2.7V DC Electrical Characteristics
235°C
260°C
(Note 1)
Supply Voltage
Temperature Range
2.7V to 5.5V
−40°C to 125°C
Thermal Resistance (θ JA)
6-Pin SC70
8-Pin SOIC
8-Pin MSOP
14-Pin TSSOP
14-Pin SOIC
414°C/W
190°C/W
235°C/W
155°C/W
145°C/W
(Note 10)
Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 2.7V, V− = 0V, VCM = V+/2, VO = V+/2 and RL > 1MΩ. Boldface
limits apply at the temperature extremes.
Symbol
VOS
Parameter
Input Offset Voltage
Conditions
Min
(Note 7)
Typ
(Note 6)
Max
(Note 7)
LMV601
0.25
4
LMV602/LMV604
0.55
5
Units
mV
TCVOS
Input Offset Voltage Average
Drift
1.7
µV/°C
IB
Input Bias Current
0.02
pA
IOS
Input Offset Current
6.6
fA
IS
Supply Current
Per Amplifier
Shutdown Mode, VSD = 0V
(LMV601)
100
170
45pA
1μA
μA
0V ≤ VCM ≤ 1.7V
80
dB
Power Supply Rejection Ratio
2.7V ≤ V+ ≤ 5V
82
dB
VCM
Input Common Mode Voltage
For CMRR ≥ 50dB
AV
Large Signal Voltage Gain
RL = 10kΩ to 1.35V
VO
Output Swing
RL = 10kΩ to 1.35V
CMRR
Common Mode Rejection Ratio
PSRR
0V ≤ VCM ≤ 1.6V
0
Output Short Circuit Current
5.0
Sourcing
LMV601/LMV602
32
Sourcing
LMV604
24
Sinking
24
Turn-on Time from Shutdown
(LMV601)
5
VSD
Shutdown Pin Voltage Range
ON Mode (LMV601)
Shutdown Mode (LMV601)
2
V
dB
30
5.3
ton
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1.7
113
30
IO
−0.2 to 1.9
(Range)
mV
mA
μs
1.7 to 2.7
2.4 to 2.7
0 to 1
0 to 0.8
V
(Note 10)
Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 2.7V, V− = 0V, VCM = V+/2, VO = V+/2 and RL > 1MΩ.
Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 7)
Typ
(Note 6)
Max
(Note 7)
Units
SR
Slew Rate
RL = 10kΩ, (Note 9)
1.0
V/μs
GBW
Gain Bandwidth Product
RL = 100kΩ, CL = 200pF
1.0
MHz
Φm
Phase Margin
RL = 100kΩ
72
deg
Gm
Gain Margin
RL = 100kΩ
20
dB
en
Input-Referred Voltage Noise
f = 1kHz
40
nV/
in
Input-Referred Current Noise
f = 1kHz
0.001
pA/
THD
Total Harmonic Distortion
f = 1kHz, AV = +1
0.017
%
RL = 600Ω, VIN = 1VPP
5V DC Electrical Characteristics
(Note 10)
Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 5V, V− = 0V, VCM = V+/2, VO = V+/2 and R L > 1MΩ. Boldface limits apply at the temperature extremes.
Symbol
VOS
Parameter
Input Offset Voltage
Conditions
Min
(Note 7)
Typ
(Note 6)
Max
(Note 7)
LMV601
0.25
4
LMV602/LMV604
0.70
5
Units
mV
TCVOS
Input Offset Voltage Average
Drift
1.9
µV/°C
IB
Input Bias Current
0.02
pA
IOS
Input Offset Current
6.6
fA
IS
Supply Current
Per Amplifier
Shutdown Mode, VSD = 0V
(LMV601)
CMRR
Common Mode Rejection Ratio
107
200
μA
0.033
1
μA
0V ≤ VCM ≤ 4.0V
86
dB
82
dB
0V ≤ VCM ≤ 3.9V
PSRR
Power Supply Rejection Ratio
2.7V ≤ V+ ≤ 5V
VCM
Input Common Mode Voltage
For CMRR ≥ 50dB
AV
Large Signal Voltage Gain (Note RL = 10kΩ to 2.5V
8)
VO
Output Swing
0
Output Short Circuit Current
7
RL = 10kΩ to 2.5V
113
Sinking
75
5
ton
Turn-on Time from Shutdown
(LMV601)
VSD
Shutdown Pin Voltage Range
ON Mode (LMV601)
Shutdown Mode (LMV601)
V
dB
30
7
Sourcing
5V AC Electrical Characteristics
4
116
30
IO
−0.2 to 4.2
(Range)
mV
mA
µs
3.1 to 5
4.5 to 5.0
0 to 1
0 to 0.8
V
(Note 10)
Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 5V, V− = 0V, VCM = V+/2, VO = V+/2 and R L > 1MΩ. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 7)
Typ
(Note 6)
Max
(Note 7)
Units
SR
Slew Rate
RL = 10kΩ, (Note 9)
1.0
V/µs
GBW
Gain-Bandwidth Product
RL = 10kΩ, CL = 200pF
1.0
MHz
3
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LMV601/LMV602/LMV604
2.7V AC Electrical Characteristics
LMV601/LMV602/LMV604
Symbol
Parameter
Conditions
Min
(Note 7)
Typ
(Note 6)
Max
(Note 7)
Units
Φm
Phase Margin
RL = 100kΩ
70
deg
Gm
Gain Margin
RL = 100kΩ
20
dB
en
Input-Referred Voltage Noise
f = 1kHz
39
nV/
in
Input-Referred Current Noise
f = 1kHz
0.001
pA/
THD
Total Harmonic Distortion
f = 1kHz, AV = +1
0.012
%
RL = 600Ω, VIN = 1VPP
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 TJ(MAX), θJA. The maximum allowable power dissipation at any ambient temperature
is PD = (TJ(MAX) – TA)/ θJA. All numbers apply for packages soldered directly onto a PC Board.
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: RL is connected to mid-supply. The output voltage is GND + 0.2V ≤ VO ≤ V+ −0.2V
Note 9: Connected as voltage follower with 2VPP step input. Number specified is the slower of the positive and negative slew rates.
Note 10: Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating
of the device such that TJ = TA. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self heating where TJ >
TA.
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4
LMV601/LMV602/LMV604
Connection Diagrams
6-Pin SC70
8-Pin MSOP/SOIC
30185541
Top View
14-Pin TSSOP/SOIC
30185552
30185551
Top View
Top View
Ordering Information
Package
6-Pin SC70
8-Pin MSOP
8-Pin SOIC
14-Pin TSSOP
14-Pin SOIC
Part Number
LMV601MG
LMV601MGX
LMV602MM
LMV602MMX
LMV602MA
LMV602MAX
LMV604MT
LMV604MTX
LMV604MA
LMV604MAX
Package Marking
Transport Media
1k Units Tape and Reel
AUA
3k Units Tape and Reel
AC9A
LMV602MA
LMV604MT
LMV604MA
5
1k Units Tape and Reel
3.5k Units Tape and Reel
95 Units/Rail
2.5k Units Tape and Reel
Rails
2.5k Units Tape and Reel
55 Units/Rail
2.5k Units Tape and Reel
NSC Drawing
MAA06A
MUA08A
M08A
MTC14
M14A
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LMV601/LMV602/LMV604
Typical Performance Characteristics
Supply Current vs. Supply Voltage (LMV601)
Input Current vs. Temperature
30185528
30185546
Output Voltage Swing vs. Supply Voltage
Output Voltage Swing vs. Supply Voltage
30185526
30185527
ISOURCE vs. VOUT
ISOURCE vs. VOUT
30185529
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30185530
6
LMV601/LMV602/LMV604
ISINK vs. VOUT
ISINK vs. VOUT
30185532
30185531
VOS vs. VCM
VOS vs. VCM
30185533
30185534
VIN vs. VOUT
VIN vs. VOUT
30185535
30185536
7
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LMV601/LMV602/LMV604
CMRR vs. Frequency
PSRR vs. Frequency
30185501
30185503
Input Voltage Noise vs. frequency
Slew Rate vs. VSUPPLY
30185504
30185502
Slew Rate vs. Temperature
Slew Rate vs. Temperature
30185522
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30185523
8
LMV601/LMV602/LMV604
THD+N vs. Frequency
THD+N vs. VOUT
30185525
30185524
Open Loop Frequency Over Temperature
Open Loop Frequency Response
30185521
30185520
Open Loop Frequency Response
Gain and Phase vs. CL
30185519
30185517
9
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LMV601/LMV602/LMV604
Gain and Phase vs. CL
Stability vs. Capacitive Load
30185548
30185518
Stability vs. Capacitive Load
Non-Inverting Small Signal Pulse Response
30185505
30185549
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Non-Inverting Large Signal Pulse Response
Non-Inverting Small Signal Pulse Response
30185508
30185506
10
Non-Inverting Small Signal Pulse Response
30185509
30185507
Non-Inverting Large Signal Pulse Response
LMV601/LMV602/LMV604
Non-Inverting Large Signal Pulse Response
Inverting Small Signal Pulse Response
30185510
30185511
Inverting Large Signal Pulse Response
Inverting Small Signal Pulse Response
30185514
30185512
11
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LMV601/LMV602/LMV604
Inverting Large Signal Pulse Response
Inverting Small Signal Pulse Response
30185515
30185513
Inverting Large Signal Pulse Response
Crosstalk Rejection vs. Frequency
30185516
30185554
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12
LMV601/LMV602/LMV604
The LMV601/LMV602/LMV604 family of amplifiers features
low voltage, low power, and rail-to-rail output operational amplifiers designed for low voltage portable applications. The
family is designed using all CMOS technology. This results in
an ultra low input bias current. The LMV601 has a shutdown
option, which can be used in portable devices to increase
battery life.
A simplified schematic of the LMV601/LMV602/LMV604 family of amplifiers is shown in Figure 1. The PMOS input differential pair allows the input to include ground. The output of
this differential pair is connected to the Class AB turnaround
stage. This Class AB turnaround has a lower quiescent current, compared to regular turnaround stages. This results in
lower offset, noise, and power dissipation, while slew rate
equals that of a conventional turnaround stage. The output of
the Class AB turnaround stage provides gate voltage to the
complementary common-source transistors at the output
stage. These transistors enable the device to have rail-to-rail
output.
SAMPLE AND HOLD CIRCUIT
The lower input bias current of the LMV601 results in a very
high input impedance. The output impedance when the device is in shutdown mode is quite high. These high
impedances, along with the ability of the shutdown pin to be
derived from a separate power source, make LMV601 a good
choice for sample and hold circuits. The sample clock should
be connected to the shutdown pin of the amplifier to rapidly
turn the device on or off.
Figure 2 shows the schematic of a simple sample and hold
circuit. When the sample clock is high the first amplifier is in
normal operation mode and the second amplifier acts as a
buffer. The capacitor, which appears as a load on the first
amplifier, will be charging at this time. The voltage across the
capacitor is that of the non-inverting input of the first amplifier
since it is connected as a voltage-follower. When the sample
clock is low the first amplifier is shut off, bringing the output
impedance to a high value. The high impedance of this output,
along with the very high impedance on the input of the second
amplifier, prevents the capacitor from discharging. There is
very little voltage droop while the first amplifier is in shutdown
mode. The second amplifier, which is still in normal operation
mode and is connected as a voltage follower, also provides
the voltage sampled on the capacitor at its output.
30185553
FIGURE 1. Simplified Schematic
30185544
FIGURE 2. Sample and Hold Circuit
CLASS AB TURNAROUND STAGE AMPLIFIER
This patented folded cascode stage has a combined class AB
amplifier stage, which replaces the conventional folded cascode stage. Therefore, the class AB folded cascode stage
runs at a much lower quiescent current compared to conventional folded cascode stages. This results in significantly
smaller offset and noise contributions. The reduced offset and
noise contributions in turn reduce the offset voltage level and
the voltage noise level at the input of the LMV601/LMV602/
LMV604. Also the lower quiescent current results in a high
open-loop gain for the amplifier. The lower quiescent current
does not affect the slew rate of the amplifier nor its ability to
handle the total current swing coming from the input stage.
The input voltage noise of the device at low frequencies, below 1kHz, is slightly higher than devices with a BJT input
stage; However the PMOS input stage results in a much lower
input bias current and the input voltage noise drops at frequencies above 1kHz.
SHUTDOWN FEATURE
The LMV601 is capable of being turned off in order to conserve power and increase battery life in portable devices.
Once in shutdown mode the supply current is drastically reduced, 1µA maximum, and the output will be "tri-stated."
The device will be disabled when the shutdown pin voltage is
pulled low. The shutdown pin should never be left unconnected. Leaving the pin floating will result in an undefined operation mode and the device may oscillate between shutdown
and active modes.
The LMV601 typically turns on 2.8µs after the shutdown voltage is pulled high. The device turns off in less than 400ns after
shutdown voltage is pulled low. Figure 3 and Figure 4 show
the turn-on and turn-off time of the LMV601, respectively. In
order to reduce the effect of the capacitance added to the
circuit by the scope probe, in the turn-off time circuit a resistive
load of 600Ω is added. Figure 5 and Figure 6 show the test
circuits used to obtain the two plots.
13
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LMV601/LMV602/LMV604
Application Section
LMV601/LMV602/LMV604
30185543
FIGURE 6. Turn-off Time
LOW INPUT BIAS CURRENT
The LMV601/LMV602/LMV604 Amplifiers have a PMOS input stage. As a result, they will have a much lower input bias
current than devices with BJT input stages. This feature
makes these devices ideal for sensor circuits. A typical curve
of the input bias current of the LMV601 is shown in Figure 7.
30185540
FIGURE 3. Turn-on Time
30185539
FIGURE 4. Turn-off Time
30185547
FIGURE 7. Input Bias Current vs. VCM
30185542
FIGURE 5. Turn-on Time
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14
LMV601/LMV602/LMV604
Physical Dimensions inches (millimeters) unless otherwise noted
6-Pin SC70
NS Package Number MAA06A
8-Pin MSOP
NS Package Number MUA08A
15
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LMV601/LMV602/LMV604
8-Pin SOIC
NS Package Number M08A
14-Pin TSSOP
NS Package Number MTC14
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16
LMV601/LMV602/LMV604
14-Pin SOIC
NS Package Number M14A
17
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LMV601/LMV602/LMV604 1 MHz, Low Power General Purpose, 2.7V Operational Amplifiers
Notes
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