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TLV376, TLV2376, TLV4376
SBOS755 – OCTOBER 2016
TLVx376 Low Offset and Drift, Low-Noise,
Precision Operational Amplifiers for Cost-Sensitive Systems
1 Features
3 Description
•
•
•
•
The TLVx376 family represents a new generation of
low-noise operational amplifiers with e-trim™, offering
both excellent dc precision and ac performance. Railto-rail input and output, low offset (125 μV,
maximum), low noise (8 nV/√Hz), a quiescent current
of 1.2 mA (maximum), and a 5.5-MHz bandwidth with
a fast slew rate of 2 V/μs make this family of devices
very attractive for a variety of precision and portable
applications. In addition, these devices have a
reasonably wide supply range with excellent PSRR,
making the family ideal for applications that run
directly from batteries without regulation.
1
•
•
•
•
•
Low Noise: 8 nV/√Hz at 1 kHz
0.1-Hz to 10-Hz Noise: 1.6 μVPP
Quiescent Current: 815 μA (typical)
Low Offset Voltage (typical):
– Single and Dual Versions: 40 μV
– Quad Version: 50 μV
Gain Bandwidth Product: 5.5 MHz
Rail-to-Rail Input and Output
Single-Supply Operation
Supply Voltage: 2.2 V to 5.5 V
Industry-Standard Packages:
– SOT-23, SOIC, VSSOP, TSSOP
The TLV376 (single version) is available in SOT-23-5
and SOIC-8 packages. The TLV2376 (dual) is offered
in VSSOP-8 and SOIC-8 packages. The TLV4376
(quad) is offered in a TSSOP-14 package. All
versions are specified for operation from –40°C to
+125°C.
2 Applications
•
•
•
•
•
•
Solar Inverters
Medical Instrumentation
ADC Buffers
Handheld Test Equipment
Active Filtering
Sensor Conditioning
Device Information(1)
PART NUMBER
TLV376
TLV2376
TLV4376
PACKAGE
BODY SIZE (NOM)
SOIC (8)
4.90 mm × 3.91 mm
SOT-23 (5)
2.90 mm × 1.60 mm
SOIC (8)
4.90 mm × 3.91 mm
VSSOP (8)
3.00 mm × 3.00 mm
PW (14)
5.00 mm × 4.40 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
OFFSET VOLTAGE PRODUCTION DISTRIBUTION
INPUT VOLTAGE NOISE SPECTRAL DENSITY
Population
Voltage Noise (nV/ÖHz)
100
10
1
10
100
1k
Frequency (Hz)
10k
100k
-25
-22.5
-20
-17.5
-15
-12.5
-10
-7.5
-5
-2.5
0
2.5
5
7.5
10
12.5
15
17.5
20
22.5
25
1
Offset Voltage (mV)
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
TLV376, TLV2376, TLV4376
SBOS755 – OCTOBER 2016
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Table of Contents
1
2
3
4
5
6
7
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
2
3
5
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
5
5
5
6
6
6
7
8
Absolute Maximum Ratings ......................................
ESD Ratings..............................................................
Recommended Operating Conditions.......................
Thermal Information: TLV376 ...................................
Thermal Information: TLV2376 .................................
Thermal Information: TLV4376 .................................
Electrical Characteristics..........................................
Typical Characteristics ..............................................
7.4 Device Functional Modes........................................ 14
8
Application and Implementation ........................ 15
8.1 Application Information............................................ 15
8.2 Typical Application ................................................. 18
9 Power Supply Recommendations...................... 19
10 Layout................................................................... 19
10.1 Layout Guidelines ................................................. 19
10.2 Layout Example .................................................... 20
11 Device and Documentation Support ................. 21
11.1
11.2
11.3
11.4
11.5
11.6
11.7
11.8
Detailed Description ............................................ 12
7.1 Overview ................................................................. 12
7.2 Functional Block Diagram ....................................... 12
7.3 Feature Description................................................. 12
Device Support ....................................................
Documentation Support ........................................
Related Links ........................................................
Receiving Notification of Documentation Updates
Community Resources..........................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
21
21
22
22
22
22
22
22
12 Mechanical, Packaging, and Orderable
Information ........................................................... 22
4 Revision History
2
DATE
REVISION
NOTES
October 2016
*
Initial release.
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SBOS755 – OCTOBER 2016
5 Pin Configuration and Functions
TLV376: DBV Package
5-Pin SOT23
Top View
OUT
1
V-
2
+IN
3
TLV376: D Package
8-Pin SOIC
Top View
V+
5
4
-IN
NC
1
-IN
2
+IN
V-
8
NC
7
V+
3
6
OUT
4
5
NC
+
Pin Functions: TLV376
PIN
NAME
–IN
DBV
D
4
2
I/O
DESCRIPTION
I
Negative input signal
Positive input signal
+IN
3
3
I
NC
—
1, 5, 8
—
No connection
OUT
1
6
O
Output signal
V–
2
4
—
Negative supply voltage
V+
5
7
—
Positive supply voltage
TLV2376: D and DGK Packages
8-Pin SOIC and 8-Pin VSSOP
Top View
OUT A
1
8
V+
-IN A
2
7
OUT B
+IN A
3
6
-IN B
V-
4
5
+IN B
Pin Functions: TLV2376
PIN
NAME
D, DGK
I/O
DESCRIPTION
–IN A
2
I
Inverting input, channel A
–IN B
6
I
Inverting input, channel B
+IN A
3
I
Noninverting input, channel A
+IN B
5
I
Noninverting input, channel B
OUT A
1
O
Output, channel A
OUT B
7
O
Output, channel B
V–
4
—
Negative supply voltage
V+
8
—
Positive supply voltage
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TLV4376: PW Package
14-Pin TSSOP
Top View
OUT A
1
14
OUT D
-IN A
2
13
-IN D
+IN A
3
12
+IN D
V+
4
11
V-
+IN B
5
10
+IN C
-IN B
6
9
-IN C
OUT B
7
8
OUT C
Pin Functions: TLV4376
PIN
NAME
PW
I/O
DESCRIPTION
–IN A
2
O
Inverting input, channel A
–IN B
6
O
Inverting input, channel B
–IN C
9
O
Inverting input, channel C
–IN D
13
O
Inverting input, channel D
+IN A
3
I
Noninverting input, channel A
+IN B
5
I
Noninverting input, channel B
+IN C
10
I
Noninverting input, channel C
+IN D
12
I
Noninverting input, channel D
OUT A
1
O
Output, channel A
OUT B
7
O
Output, channel B
OUT C
8
O
Output, channel C
OUT D
14
O
Output, channel D
V–
11
—
Negative supply voltage
V+
4
—
Positive supply voltage
4
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SBOS755 – OCTOBER 2016
6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
MIN
Voltage
Signal input pin
(2)
Signal input pin (2)
Current
(V+) + 0.5
V
–10
10
mA
–40
125
Junction, TJ
150
Storage, Tstg
(3)
V
Continuous
Specified, TA
(2)
UNIT
7
(V–) – 0.5
Output short-circuit (3)
Temperature
(1)
MAX
Supply, VS = (V+) – (V–)
–65
°C
150
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
Input pins are diode-clamped to the power-supply rails. Input signals that can swing more than 0.5 V beyond the supply rails must be
current limited to 10 mA or less.
Short-circuit to ground, one amplifier per package.
6.2 ESD Ratings
VALUE
V(ESD)
(1)
(2)
Electrostatic discharge
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1)
±4000
Charged device model (CDM), per JEDEC specification JESD22-C101 (2)
±1000
UNIT
V
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
Supply voltage, VS = (V+) – (V–)
TA
Specified temperature range
Single supply
Dual supply
NOM
MAX
2.2
5.5
±1.1
±2.75
–40
125
UNIT
V
°C
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6.4 Thermal Information: TLV376
TLV376
THERMAL METRIC (1)
D (SOIC)
DBV (SOT-23)
8 PINS
5 PINS
UNIT
RθJA
Junction-to-ambient thermal resistance
100.1
273.8
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
42.4
126.8
°C/W
RθJB
Junction-to-board thermal resistance
41.0
85.9
°C/W
ψJT
Junction-to-top characterization parameter
4.8
10.9
°C/W
ψJB
Junction-to-board characterization parameter
40.3
84.9
°C/W
RθJC(bot)
Junction-to-case (bottom) thermal resistance
n/a
n/a
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
6.5 Thermal Information: TLV2376
TLV2376
THERMAL METRIC
(1)
D (SOIC)
DGK (VSSOP)
8 PINS
8 PINS
UNIT
RθJA
Junction-to-ambient thermal resistance
111.1
171.2
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
54.7
63.9
°C/W
RθJB
Junction-to-board thermal resistance
51.7
92.8
°C/W
ψJT
Junction-to-top characterization parameter
10.5
9.2
°C/W
ψJB
Junction-to-board characterization parameter
51.2
91.2
°C/W
RθJC(bot)
Junction-to-case (bottom) thermal resistance
n/a
n/a
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
6.6 Thermal Information: TLV4376
TLV4376
THERMAL METRIC
(1)
PW (TSSOP)
UNIT
14 PINS
RθJA
Junction-to-ambient thermal resistance
107.8
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
29.6
°C/W
RθJB
Junction-to-board thermal resistance
52.6
°C/W
ψJT
Junction-to-top characterization parameter
1.5
°C/W
ψJB
Junction-to-board characterization parameter
51.6
°C/W
RθJC(bot)
Junction-to-case (bottom) thermal resistance
n/a
°C/W
(1)
6
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
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6.7
SBOS755 – OCTOBER 2016
Electrical Characteristics
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
MAX
TLV376, TLV2376
40
100
TLV4376
50
125
UNIT
OFFSET VOLTAGE
VOS
Input offset voltage
dVOS/dT
Offset voltage vs temperature
TA = –40°C to +125°C
PSRR
Power-supply rejection ratio
VS = 2.2 V to 5.5 V, VCM < (V+) – 1.3 V
Channel separation, dc
TLV2376, TLV4376
µV
1.0
84
μV/°C
110
dB
0.5
mV/V
INPUT BIAS CURRENT
IB
Input bias current
IOS
Input offset current
0.3
TA = –40°C to +125°C
pA
See Typical Characteristics
0.2
pA
NOISE
Input voltage noise
f = 0.1 Hz to 10 Hz
2.2
µVPP
en
Input voltage noise density
f = 1 kHz
8.0
nV/√Hz
in
Input current noise
f = 1 kHz
2
fA/√Hz
INPUT VOLTAGE RANGE
VCM
Common-mode voltage range
CMRR
Common-mode rejection ratio
(V–) – 0.1
(V–) < VCM < (V+) – 1.3 V
72
(V+) + 0.1
V
88
dB
Differential
6.5
pF
Common-mode
13
pF
126
dB
5.5
MHz
2
V/µs
INPUT CAPACITANCE
OPEN-LOOP GAIN
AOL
Open-loop voltage gain
100 mV < VO < (V+) – 100 mV, RL = 2 kΩ
100
FREQUENCY RESPONSE (CL = 100 pF, VS = 5.5 V)
GBW
Gain-bandwidth product
SR
Slew rate
tS
THD+N
Settling time
G=1
To 0.1%, 2-V step , G = 1
1.6
To 0.01%, 2-V step , G = 1
µs
2
Overload recovery time
VIN × gain > VS
Total harmonic distortion + noise
VO = 1 VRMS, G = 1, f = 1 kHz, RL = 10 kΩ
0.33
Voltage output swing from rail
RL = 10 kΩ
10
Sourcing
30
μs
0.0005%
OUTPUT
ISC
Short-circuit current
CLOAD
Capacitive load drive
RO
Open-loop output impedance
Sinking
20
mV
mA
–50
See Typical Characteristics
Ω
150
POWER SUPPLY
VS
Specified voltage range
2.2
Operating voltage range
IQ
Quiescent current per amplifier
5.5
V
1200
μA
125
°C
2 to 5.5
IO = 0 mA, VS = 5.5 V, VCM < (V+) – 1.3 V
815
V
TEMPERATURE
Specified range
–40
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6.8 Typical Characteristics
0
140
-20
120
120
-40
Gain
100
-60
Phase
80
-80
60
-100
40
-120
20
-140
0
-160
-20
0.1
1
10
100
1k
10k
100k
1M
Common-Mode Rejection Ratio and
Power-Supply Rejection Ratio (dB)
160
Phase Margin (°)
Open-Loop Gain (dB)
at TA = 25°C, VS = 5 V, RL = 10 kΩ connected to VS / 2, VCM = VS / 2, and VOUT = VS / 2 (unless otherwise noted)
V(+) Power-Supply Rejection Ratio
100
80
Common-Mode
Rejection Ratio
60
40
V(-) Power-Supply Rejection Ratio
20
-180
10M
0
10
100
1k
Frequency (Hz)
10k
100k
1M
10M
Frequency (Hz)
Figure 2. Power-Supply and Common-Mode Rejection Ratio
vs Frequency
Figure 1. Open-Loop Gain and Phase vs Frequency
Open-Loop Gain (RL = 2 kW)
140
120
500 nV/div
Open-Loop Gain and PSRR (dB)
160
Power-Supply Rejection Ratio
(VS = 2.1 V to 5.5 V)
100
80
-50
0
-25
25
50
75
100
125
1 s/div
150
Temperature (°C)
Figure 3. Open-Loop Gain and Power-Supply Rejection
Ratio vs Temperature
1
Total Harmonic Distortion + Noise (%)
100
Voltage Noise (nV/ÖHz)
Figure 4. 0.1-Hz to 10-Hz Input Voltage Noise
10
1
0.1
0.01
Gain = 10 V/V
0.001
Gain = 1 V/V
0.0001
1
10
100
1k
10k
100k
10
100
Frequency (Hz)
1k
10k
100k
Frequency (Hz)
VS = 5 V, VCM = 2 V, VOUT = 1 VRMS
Figure 5. Input Voltage Noise Spectral Density
8
Figure 6. Total Harmonic Distortion + Noise vs Frequency
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Typical Characteristics (continued)
at TA = 25°C, VS = 5 V, RL = 10 kΩ connected to VS / 2, VCM = VS / 2, and VOUT = VS / 2 (unless otherwise noted)
1000
100
900
Quiescent Current (mA)
Common-Mode Rejection Ratio (dB)
110
90
80
70
800
700
600
60
50
500
-50
0
-25
25
50
75
100
125
150
-50
-25
0
25
50
75
100
125
Temperature (°C)
Temperature (°C)
Figure 7. Common-Mode Rejection Ratio vs Temperature
Figure 8. Quiescent Current vs Temperature
1000
50
900
40
150
75
30
800
IQ
700
20
10
600
Short-Circuit Current (mA)
ISC+
Short-Circuit Current (mA)
Quiescent Current (mA)
50
ISC+
25
0
-25
ISC-
-50
-75
0
500
2
2.5
3
3.5
4
4.5
-100
5.5
5
-50
-25
0
Supply Voltage (V)
25
50
75
100
125
150
Temperature (°C)
VS = ±2.75 V
Figure 9. Quiescent and Short-Circuit Current vs
Supply Voltage
Figure 10. Short-Circuit Current vs Temperature
3
1000
2
800
Output Voltage (V)
Input Bias Current (pA)
900
700
600
500
400
300
200
1
+150°C
+125°C
+25°C
-40°C
0
-1
-2
100
0
-3
-50
-25
0
25
50
75
100
125
150
0
10
20
30
40
50
60
70
80
Output Current (mA)
Temperature (°C)
VS = ±2.75 V
Figure 11. Input Bias Current vs Temperature
Figure 12. Output Voltage vs Output Current
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Typical Characteristics (continued)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2
-25
-22.5
-20
-17.5
-15
-12.5
-10
-7.5
-5
-2.5
0
2.5
5
7.5
10
12.5
15
17.5
20
22.5
25
Population
Population
at TA = 25°C, VS = 5 V, RL = 10 kΩ connected to VS / 2, VCM = VS / 2, and VOUT = VS / 2 (unless otherwise noted)
½Offset Voltage Drift½ (mV/°C)
Offset Voltage (mV)
Figure 14. Offset Voltage Drift Production Distribution
Histogram (–40°C to 125°C)
Figure 13. Offset Voltage Production Distribution
Histogram
Output Voltage (VPP)
5
50
VS = 5.5 V
VS = 5 V
Small-Signal Overshoot (%)
6
4
3
VS = 2.5 V
2
1
40
30
20
10
0
0
1k
10k
100k
1M
10M
10
100
Frequency (Hz)
Figure 16. Small-Signal Overshoot vs Load Capacitance
1 V/div
50 mV/div
Figure 15. Maximum Output Voltage vs Frequency
Time (2 ms/div)
Time (400 ns/div)
G = +1 V/V, RL = 10 kΩ, CL = 50 pF
Figure 17. Small-Signal Pulse Response
10
1k
Load Capacitance (pF)
G = +1 V/V, RL = 2 kΩ, CL = 50 pF
Figure 18. Large-Signal Pulse Response
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Typical Characteristics (continued)
at TA = 25°C, VS = 5 V, RL = 10 kΩ connected to VS / 2, VCM = VS / 2, and VOUT = VS / 2 (unless otherwise noted)
140
100
Channel Separation (dB)
Settling Time (ms)
120
10
0.01%
1
0.1%
100
80
60
40
20
0
0.1
1
10
10
100
100
10k
1k
100k
1M
10M
100M
Closed-Loop Gain (V/V)
Frequency (Hz)
Figure 19. Settling Time vs Closed-Loop Gain
Figure 20. Channel Separation vs Frequency
Open-Loop Output Resistance (W)
1k
100
10
400-mA Load
2-mA Load
1
0.1
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
Figure 21. Open-Loop Output Resistance vs Frequency
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7 Detailed Description
7.1 Overview
The TLVx376 family belongs to a new generation of low-noise operational amplifiers with e-trim™, giving
customers outstanding dc precision and ac performance. Low noise, rail-to-rail input and output, and low offset,
drawing a low quiescent current, make these devices ideal for a variety of precision and portable applications. In
addition, this family of devices have a wide supply range with excellent PSRR, making the TLVx376 a suitable
option for applications that are battery-powered without regulation.
7.2 Functional Block Diagram
V+
TLVx376
IN
OUT
+IN
e-trimTM
POR
V
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7.3 Feature Description
The TLVx376 family of precision amplifiers offers excellent dc performance as well as excellent ac performance.
Operating from a single power supply, the TLVx376 is capable of driving large capacitive loads, has a wide input
common-mode voltage range, and is well-suited to drive the inputs of successive-approximation register (SAR)
analog-to-digital converters (ADCs) as well as 24-bit and higher resolution converters. All devices feature internal
ESD protection. The TLVx376 family is offered in a variety of industry-standard packages for applications that
require space savings.
7.3.1 Operating Voltage
The TLVx376 family of amplifiers operate over a power-supply range of 2.2 V to 5.5 V (±1.1 V to ±2.75 V). Many
of the specifications apply from –40°C to +125°C. Parameters that can exhibit significant variance with regard to
operating voltage or temperature are presented in the Typical Characteristics section.
7.3.2 Capacitive Load and Stability
The TLVx376 series of amplifiers can be used in applications where driving a capacitive load is required. As with
all op amps, there can be specific instances where the TLVx376 can become unstable, leading to oscillation. The
particular op amp circuit configuration, layout, gain, and output loading are some of the factors to consider when
establishing whether an amplifier is stable in operation or not. An op amp in the unity-gain (+1 V/V) buffer
configuration and driving a capacitive load exhibits a greater tendency to be unstable than an amplifier operated
at a higher noise gain. The capacitive load, in conjunction with the op amp output resistance, creates a pole
within the feedback loop that degrades the phase margin. The phase margin reduces when the capacitive
loading increases.
12
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Feature Description (continued)
7.3.3 Input Offset Voltage and Input Offset Voltage Drift
The TLVx376 family of operational amplifiers is manufactured using TI's e-trim™ technology. Each amplifier is
trimmed in production, thereby minimizing errors associated with input offset voltage and input offset voltage drift.
The e-trim™ technology is a TI proprietary method of trimming internal device parameters during either wafer
probing or final testing.
The TLVx376 in a unity-gain configuration can directly drive up to 250 pF of pure capacitive load. Increasing the
gain enhances the ability of the amplifier to drive greater capacitive loads; see Figure 16. In unity-gain
configurations, capacitive load drive can be improved by inserting a small (10 Ω to 20 Ω) resistor, RS, in series
with the output, as shown in Figure 22. This resistor significantly reduces ringing and maintains dc performance
for purely capacitive loads. However, if there is a resistive load in parallel with the capacitive load, a voltage
divider is created, introducing a gain error at the output and slightly reducing the output swing. The error
introduced is proportional to the ratio RS / RL, and is generally negligible at low output current levels.
V+
RS
VOUT
TLV376
10W to
20W
VIN
RL
CL
Copyright © 2016, Texas Instruments Incorporated
Figure 22. Improving Capacitive Load Drive
7.3.4 Common-Mode Voltage Range
The input common-mode voltage range of the TLVx376 series extends 100 mV beyond the supply rails. The
offset voltage of the amplifier is very low, from approximately (V–) to (V+) – 1 V, as shown in Figure 23. The
offset voltage increases when common-mode voltage exceeds (V+) –1 V. Common-mode rejection is specified
from (V–) to (V+) – 1.3 V.
Input Offset Voltage (mV)
3
2
1
0
-1
-2
-V
+V
-3
-0.5 0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Input Common-Mode Voltage (V)
Figure 23. Offset and Common-Mode Voltage
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Feature Description (continued)
Parameters that can vary across the common-mode voltage range are listed in Table 1.
Table 1. Parameters With Variation Across the Common-Mode Voltage Range
PARAMETER
(V–) - 0.1 V < VCM < (V+) – 1.3 V
(V+) – 1.3 V < VCM < (V+) + 0.1 V
TYP
TYP
UNIT
OFFSET VOLTAGE
VOS
Input offset voltage
dVOS/dT
Offset voltage vs temperature
40
2500
1
25
μV/°C
126
96
dB
88
43
dB
5.5
MHz
μV
OPEN LOOP GAIN
AOL
Open-loop voltage gain
INPUT VOLTAGE RANGE
CMRR
Common-mode rejection ratio
FREQUENCY RESPONSE
GBW
Gain-bandwidth product
5.5
PM
Phase margin
72
72
Degrees
SR
Slew rate, G = 1
2
1.1
V/μs
en
Input voltage noise density,
f = 1 kHz
8
135
nV/√Hz
in
Input current noise, f = 1 kHz
2
47
fA/√Hz
NOISE
7.3.5 Input and ESD Protection
The TLVx376 family incorporates internal electrostatic discharge (ESD) protection circuits on all pins. In the case
of input and output pins, this protection primarily consists of current-steering diodes connected between the input
and power-supply pins. These ESD protection diodes also provide in-circuit, input overdrive protection, as long
as the current is limited to 10 mA as stated in the Absolute Maximum Ratings table. Figure 24 shows how a
series input resistor can be added to the driven input to limit the input current. The added resistor contributes
thermal noise at the amplifier input. In noise-sensitive applications, the value of this resistor must be as low as
possible.
V+
IOVERLOAD
10mA max
TLV376
VOUT
VIN
5kW
Copyright © 2016, Texas Instruments Incorporated
Figure 24. Input Current Protection
7.4 Device Functional Modes
The TLVx376 family has a single functional mode and is operational when the power-supply voltage is greater
than 2.2 V (±1.1 V). The maximum power-supply voltage for the TLVx376 family is 5.5 V (±2.75 V).
14
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8 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The TLV376 family of operational amplifiers is built using e-trim™, a proprietary technique in which offset voltage
is adjusted during the final steps of manufacturing. This technique compensates for performance shifts that can
occur during the molding process. Through e-trim™, the TLV376 family delivers excellent offset voltage (40 μV,
typical). Additionally, the amplifier boasts a fast slew rate, low drift, low noise, and excellent PSRR and AOL.
These 5.5-MHz CMOS op amps only consume 815-µA (typical) quiescent current.
8.1.1 Operating Characteristics
The TLVx376 family of amplifiers has parameters that are fully specified from 2.2 V to 5.5 V (±1.1 V to ±2.75 V).
Many of the specifications apply from –40°C to +125°C. Parameters that can exhibit significant variance with
regard to operating voltage or temperature are presented in the Typical Characteristics section.
8.1.2 Basic Amplifier Configurations
The TLVx376 family is unity-gain stable. The TLVx376 does not exhibit output phase inversion when the input is
overdriven. A typical single-supply connection is shown in Figure 25. The TLV376 is configured as a basic
inverting amplifier with a gain of –10 V/V. This single-supply connection has an output centered on the commonmode voltage, VCM. For the circuit shown, this voltage is 2.5 V, but can be any value within the common-mode
input voltage range.
R2
10kW
+5V
C1
100nF
R1
1kW
TLV376
VOUT
VIN
VCM = 2.5V
Copyright © 2016, Texas Instruments Incorporated
Figure 25. Basic Single-Supply Connection
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Application Information (continued)
8.1.3 Active Filtering
The TLVx376 family is well-suited for filter applications requiring a wide-bandwidth, fast slew rate, low-noise,
single-supply operational amplifier. Figure 26 shows a 50-kHz, 2nd-order, low-pass filter. The components have
been selected to provide a maximally-flat Butterworth response. Beyond the cutoff frequency, roll-off is –40 dB
per decade. The Butterworth response is ideal for applications requiring predictable gain characteristics (such as
the antialiasing filter used ahead of an ADC).
R3
5.49kW
C2
150pF
V+
R1
5.49kW
R2
12.4kW
TLV376
VOUT
C1
1nF
VIN
(V+)/2
Copyright © 2016, Texas Instruments Incorporated
Figure 26. Second-Order, Butterworth, 50-kHz, Low-Pass Filter
8.1.4 Driving an Analog-to-Digital Converter
The low-noise and wide-gain bandwidth of the TLVx376 family make these devices ideal for driving ADCs.
Figure 27 shows the TLV376 driving an ADS8327, a 16-bit, 250-kSPS converter. The amplifier is connected as a
unity-gain, noninverting buffer.
+5V
C1
0.1mF
+5V
(1)
R1
100W
+IN
TLV376
ADS8327
Low Power
16-Bit
500kSPS
(1)
VIN
C3
1.2nF
-IN
REF IN
+5V
REF5040
4.096V
C4
100nF
Copyright © 2016, Texas Instruments Incorporated
NOTE: Suggested value; may require adjustment based on specific application.
Figure 27. Driving an ADS8327
16
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Application Information (continued)
8.1.5 Phantom-Powered Microphone
The circuit shown in Figure 28 depicts how a remote microphone amplifier can be powered by a phantom source
on the output side of the signal cable. The cable serves double duty, carrying both the differential output signal
from and dc power to the microphone amplifier stage.
A TLV2376 serves as a single-ended input to a differential output amplifier with a 6-dB gain. Common-mode bias
for the two op amps is provided by the dc voltage developed across the electret microphone element. A 48-V
phantom supply is reduced to 5.1 V by the series 6.8-kΩ resistors on the output side of the cable, and the 4.7 kΩ
and zener diode on the input side of the cable. AC coupling blocks the different dc voltage levels from each other
on each end of the cable.
An INA163 instrumentation amplifier provides differential inputs and receives the balanced audio signals from the
cable. The INA163 gain can be set from 0 dB to 80 dB by selecting the RG value. The INA163 circuit is typical of
the input circuitry used in mixing consoles.
Phantom Power
(Provides power source for microphone)
48V
Microphone
100W
+
1mF
+
D1
5.1V
33mF
R1
2.7kW
R6
100W
R8
4.7kW
R9
4.7kW
R10
6.8kW
+
½
TLV2376
C2
33mF
R11
6.8kW
+15V
10mF
+
2
2
3
3
1kW
RG
INA163
10mF
+
Panasonic
WM-034CY
1kW
1
10kW
+
1
R7
100W
+
½
TLV2376
C3
33mF
3.3kW
Low-level differential audio signal
is transmitted differentially on the
same cable as power to the microphone.
3.3kW
-15V
10mF
Typical microphone input circuit used in mixing consoles.
Copyright © 2016, Texas Instruments Incorporated
Figure 28. Phantom-Powered Electret Microphone
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8.2 Typical Application
R4
2.94 k
C5
1 nF
±
Input
R1
590
R3
499
C2
39 nF
Output
+
TLV376
Copyright © 2016, Texas Instruments Incorporated
Figure 29. Second-Order, Low-Pass Filter
8.2.1 Design Requirements
Low-pass filters are commonly employed in signal-processing applications to reduce noise and prevent aliasing.
The TLV376 is ideally suited to construct high-speed, high-precision active filters. Figure 29 shows a secondorder, low-pass filter commonly encountered in signal-processing applications.
Use the following parameters for this design example:
• Gain = 5 V/V (inverting gain)
• Low-pass cutoff frequency = 25 kHz
• Second-order Chebyshev filter response with 3-dB gain peaking in the passband
8.2.2 Detailed Design Procedure
The infinite-gain multiple-feedback circuit for a low-pass network function is shown in the Application Curve
section. Use Equation 1 to calculate the voltage transfer function.
1 R1R3C2C5
Output
s
2
Input
s
s C2 1 R1 1 R3 1 R4 1 R3R4C2C5
(1)
This circuit in Figure 29 produces a signal inversion. For this circuit, the gain at dc and the low-pass cutoff
frequency are calculated by Equation 2:
R4
Gain
R1
fC
1
2S
1 R3R 4 C2C5
(2)
Software tools are readily available to simplify filter design. The WEBENCH® filter designer is a simple, powerful,
and easy-to-use active filter design program. The WEBENCH® filter designer allows optimized filter designs to
be created by using a selection of TI operational amplifiers and passive components from TI's vendor partners.
Available as a web-based tool from the WEBENCH® design center, the WEBENCH® filter designer allows
complete multistage active filter solutions to be designed, optimized, and simulated within minutes.
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Typical Application (continued)
8.2.3 Application Curve
20
Gain (db)
0
-20
-40
-60
100
1k
10k
Frequency (Hz)
100k
1M
Figure 30. Measured Frequency Response of the Second-Order, Low-Pass Filter
9 Power Supply Recommendations
The TLVx376 family of devices are specified for operation from 2.2 V to 5.5 V (±1.1 V to ±2.75 V); many
specifications apply from –40°C to +125°C. Parameters that can exhibit significant variance with regard to
operating voltage or temperature are presented in the Typical Characteristics section.
10 Layout
10.1 Layout Guidelines
For best operational performance of the device, use good printed circuit board (PCB) layout practices, including:
• Noise can propagate into analog circuitry through the power pins of the circuit as a whole and the op amp
itself. Bypass capacitors are used to reduce the coupled noise by providing low-impedance power
sources local to the analog circuitry.
– Connect low-equivalent series resistance (ESR), 0.1-µF ceramic bypass capacitors between each
supply pin and ground, placed as close to the device as possible. A single bypass capacitor from V+
to ground is applicable for single-supply applications.
• Separate grounding for analog and digital portions of circuitry is one of the simplest and most-effective
methods of noise suppression. One or more layers on multilayer PCBs are usually devoted to ground
planes. A ground plane helps distribute heat and reduces electromagnetic interference (EMI) noise
pickup. Make sure to physically separate digital and analog grounds paying attention to the flow of the
ground current. For more detailed information, see the Circuit Board Layout Techniques application
report.
• In order to reduce parasitic coupling, run the input traces as far away from the supply or output traces as
possible. If these traces cannot be kept separate, crossing the sensitive trace perpendicular is much
better as opposed to in parallel with the noisy trace.
• Place the external components as close to the device as possible. As illustrated in Figure 32, keeping RF
and RG close to the inverting input minimizes parasitic capacitance.
• Keep the length of input traces as short as possible. Always remember that the input traces are the most
sensitive part of the circuit.
• Consider a driven, low-impedance guard ring around the critical traces. A guard ring can significantly
reduce leakage currents from nearby traces that are at different potentials.
• Cleaning the PCB following board assembly is recommended for best performance.
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Layout Guidelines (continued)
•
Any precision integrated circuit can experience performance shifts resulting from moisture ingress into the
plastic package. Following any aqueous PCB cleaning process, baking the PCB assembly is
recommended to remove moisture introduced into the device packaging during the cleaning process. A
low-temperature, post-cleaning bake at 85°C for 30 minutes is sufficient for most circumstances.
10.2 Layout Example
+
VIN
VOUT
RG
RF
Figure 31. Schematic Representation of Figure 32
Place components
close to device and to
Run the input
each other to reduce
traces as far away
parasitic errors
from the supply
lines as possible
VS+
RF
NC
NC
GND
±IN
V+
VIN
+IN
OUT
V±
N/C
RG
Use low-ESR,
ceramic bypass
capacitor
GND
VS±
GND
Use low-ESR, ceramic
bypass capacitor
VOUT
Ground (GND) plane on another layer
Figure 32. Layout Example
20
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11 Device and Documentation Support
11.1 Device Support
11.1.1 Development Support
11.1.1.1 TINA-TI™ (Free Software Download)
TINA-TI™ is a simple, powerful, and easy-to-use circuit simulation program based on a SPICE engine. TINATI™ is a free, fully-functional version of the TINA-TI™ software, preloaded with a library of macromodels in
addition to a range of both passive and active models. TINA-TI™ provides all the conventional dc, transient, and
frequency domain analysis of SPICE, as well as additional design capabilities.
Available as a free download from the Analog eLab Design Center, TINA-TI™ offers extensive post-processing
capability that allows users to format results in a variety of ways. Virtual instruments offer the ability to select
input waveforms and probe circuit nodes, voltages, and waveforms, creating a dynamic quick-start tool.
NOTE
These files require that either the TINA software (from DesignSoft™) or TINA-TI™
software be installed. Download the free TINA-TI™ software from the TINA-TI™ folder.
11.1.1.2 TI Precision Designs
TI Precision Designs are analog solutions created by TI’s precision analog applications experts and offer the
theory of operation, component selection, simulation, complete PCB schematic and layout, bill of materials, and
measured performance of many useful circuits. TI Precision Designs are available online at
www.ti.com/ww/en/analog/precision-designs/.
11.1.1.3 WEBENCH® Filter Designer
WEBENCH® Filter Designer is a simple, powerful, and easy-to-use active filter design program. The
WEBENCH® Filter Designer lets you create optimized filter designs using a selection of TI operational amplifiers
and passive components from TI's vendor partners.
Available as a web-based tool from the WEBENCH® Design Center, WEBENCH® Filter Designer allows you to
design, optimize, and simulate complete multistage active filter solutions within minutes.
11.2 Documentation Support
11.2.1 Related Documentation
For related documentation see the following:
• Circuit Board Layout Techniques Application Report (SLOA089)
• Operational amplifier gain stability, Part 3: AC gain-error analysis Application Report (SLYT383)
• Operational amplifier gain stability, Part 2: DC gain-error analysis Application Report (SLYT374)
• Using infinite-gain, MFB filter topology in fully differential active filters Application Report (SLYT343)
• Op Amp Performance Analysis Application Report (SBOA054)
• Single-Supply Operation of Operational Amplifiers Application Report (SBOA059)
• Tuning in Amplifiers Application Report (SBOA067)
• Shelf-Life Evaluation of Lead-Free Component Finishes Application Report (SZZA046)
• ADS832x Low Power, 16-Bit, 500-kHz, Single/Dual Unipolar Input, Analog-to-Digital Converters With Serial
Interface (SLAS415)
• REF50xx Low-Noise, Very Low Drift, Precision Voltage Reference (SBOS410)
• INA163 Low-Noise, Low-Distortion Instrumentation Amplifier (SBOS177)
• ADS7822 12-Bit, 200kHz, microPower Sampling Analog-to-Digital Converter (SBAS062)
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11.3 Related Links
Table 2 lists quick access links. Categories include technical documents, support and community resources,
tools and software, and quick access to sample or buy.
Table 2. Related Links
PARTS
PRODUCT FOLDER
SAMPLE & BUY
TECHNICAL
DOCUMENTS
TOOLS &
SOFTWARE
SUPPORT &
COMMUNITY
TLV376
Click here
Click here
Click here
Click here
Click here
TLV2376
Click here
Click here
Click here
Click here
Click here
TLV4376
Click here
Click here
Click here
Click here
Click here
11.4 Receiving Notification of Documentation Updates
To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper
right corner, click on Alert me to register and receive a weekly digest of any product information that has
changed. For change details, review the revision history included in any revised document.
11.5 Community Resources
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective
contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of
Use.
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration
among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help
solve problems with fellow engineers.
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and
contact information for technical support.
11.6 Trademarks
e-trim, TINA-TI, E2E are trademarks of Texas Instruments.
DesignSoft is a trademark of DesignSoft, Inc.
All other trademarks are the property of their respective owners.
11.7 Electrostatic Discharge Caution
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.
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.
11.8 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
12 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
22
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PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
TLV2376IDGKR
ACTIVE
VSSOP
DGK
8
2500
RoHS & Green
NIPDAUAG
Level-2-260C-1 YEAR
-40 to 125
13F6
TLV2376IDGKT
ACTIVE
VSSOP
DGK
8
250
RoHS & Green
NIPDAUAG
Level-2-260C-1 YEAR
-40 to 125
13F6
TLV2376IDR
ACTIVE
SOIC
D
8
2500
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 125
TLV
2376
TLV376IDBVR
ACTIVE
SOT-23
DBV
5
3000
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 125
12J
TLV376IDBVT
ACTIVE
SOT-23
DBV
5
250
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 125
12J
TLV376IDR
ACTIVE
SOIC
D
8
2500
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 125
TLV
15M
TLV4376IPWR
ACTIVE
TSSOP
PW
14
2000
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 125
TLV4376
(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
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