LTC2050/LTC2050HV
Zero-Drift Operational Amplifiers in SOT-23
FEATURES
DESCRIPTION
Maximum Offset Voltage of 3µV
nn Maximum Offset Voltage Drift of 30nV/°C
nn Noise: 1.5µV
P-P (0.01Hz to 10Hz Typ)
nn Voltage Gain: 140dB (Typ)
nn PSRR: 130dB (Typ)
nn CMRR: 130dB (Typ)
nn Supply Current: 0.8mA (Typ)
nn Supply Operation
nn LTC2050: 2.7V to 6V
nn LTC2050HV: 2.7V to ±5.5V
nn LTC2050HVMP: 4.5V to ±5.5V
nn Extended Common Mode Input Range
nn Output Swings Rail-to-Rail
nn Input Overload Recovery Time: 2ms (Typ)
nn Operating Temperature Range
nn LTC2050: –40°C to 125°C
nn LTC2050HVMP: –55°C to 150°C
nn Low Profile (1mm) SOT-23 (ThinSOT™) Package
nn AEC-Q100 Qualified for Automotive Applications
The LTC®2050 and LTC2050HV are zero-drift operational
amplifiers available in the 5- or 6-lead SOT-23 and SO-8
packages. The LTC2050 operates from a single 2.7V to
6V supply. The LTC2050HV operates on supplies from
2.7V to ±5.5V. The current consumption is 800µA and
the versions in the 6-lead SOT-23 and SO-8 packages
offer power shutdown (active low). The LTC2050HVMP
offer operating range from 4.5V to ±5.5V and operating
temperature range of – 55°C to 150°C.
nn
APPLICATIONS
Thermocouple Amplifiers
Electronic Scales
nn Medical Instrumentation
nn Strain Gauge Amplifiers
nn High Resolution Data Acquisition
nn DC Accurate RC Active Filters
nn Low Side Current Sense
nn
nn
The LTC2050, despite its miniature size, features uncompromising DC performance. The typical input offset voltage and offset drift are 0.5µV and 10nV/°C. The almost
zero DC offset and drift are supported with a power supply rejection ratio (PSRR) and common mode rejection
ratio (CMRR) of more than 130dB.
The input common mode voltage ranges from the negative supply up to typically 1V from the positive supply.
The LTC2050 also has an enhanced output stage capable
of driving loads as low as 2kΩ to both supply rails. The
open-loop gain is typically 140dB. The LTC2050 also
features a 1.5µVP-P DC to 10Hz noise and a 3MHz gain
bandwidth product.
All registered trademarks and trademarks are the property of their respective owners. Protected
by U.S. patents, including 5481178.
TYPICAL APPLICATION
Differential Bridge Amplifier
Input Referred Noise 0.1Hz to 10Hz
2
5V
5V
50Ω
GAIN
TRIM
0.1µF
0.1µF
1
350Ω
STRAIN
GAUGE
4
–
3
+
5
LTC2050HV
0.1µF
(µV)
18.2k
1
AV = 100
0
–1
2
18.2k
–2
2050 TA01a
–5V
0
2
4
6
TIME (SEC)
8
10
2050 TA01b
Rev. F
Document Feedback
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1
LTC2050/LTC2050HV
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage (V + to V –)
LTC2050..................................................................7V
LTC2050HV...........................................................12V
Input Voltage .........................(V + + 0.3V) to (V – – 0.3V)
Output Short-Circuit Duration .......................... Indefinite
Operating Temperature Range
LTC2050............................................. –40°C to 125°C
LTC2050HVMP................................... –55°C to 150°C
Specified Temperature Range
(Note 3)................................................... –55°C to 150°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................... 300°C
PIN CONFIGURATION
TOP VIEW
OUT 1
5 V+
–
V 2
+IN 3
4 –IN
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
TJMAX = 150°C, θJA = 250°C/W
TOP VIEW
TOP VIEW
OUT 1
V– 2
+IN 3
6 V+
5 SHDN
4 –IN
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
TJMAX = 150°C, θJA = 230°C/W
SHDN 1
8
NC
–IN 2
7
V+
+IN 3
6
OUT
5
NC
V–
4
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 190°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
SPECIFIED TEMPERATURE RANGE
LTC2050CS5#PBF
LTC2050CS5#TRPBF
LTAEG
5-Lead Plastic TSOT-23
0°C to 70°C
LTC2050IS5#PBF
LTC2050IS5#TRPBF
LTAEG
5-Lead Plastic TSOT-23
–40°C to 85°C
LTC2050HS5#PBF
LTC2050HS5#TRPBF
LTAEG
5-Lead Plastic TSOT-23
–40°C to 125°C
LTC2050HVCS5#PBF
LTC2050HVCS5#TRPBF
LTAEH
5-Lead Plastic TSOT-23
0°C to 70°C
LTC2050HVIS5#PBF
LTC2050HVIS5#TRPBF
LTAEH
5-Lead Plastic TSOT-23
–40°C to 85°C
LTC2050HVHS5#PBF
LTC2050HVHS5#TRPBF
LTAEH
5-Lead Plastic TSOT-23
–40°C to 125°C
LTC2050CS6#PBF
LTC2050CS6#TRPBF
LTAEJ
6-Lead Plastic TSOT-23
0°C to 70°C
LTC2050IS6#PBF
LTC2050IS6#TRPBF
LTAEJ
6-Lead Plastic TSOT-23
–40°C to 85°C
LTC2050HS6#PBF
LTC2050HS6#TRPBF
LTAEJ
6-Lead Plastic TSOT-23
–40°C to 125°C
LTC2050HVMPS6#PBF
LTC2050HVMPS6#TRPBF
LTHGP
6-Lead Plastic TSOT-23
–55°C to 150°C
LTC2050HVCS6#PBF
LTC2050HVCS6#TRPBF
LTAEK
6-Lead Plastic TSOT-23
0°C to 70°C
LTC2050HVIS6#PBF
LTC2050HVIS6#TRPBF
LTAEK
6-Lead Plastic TSOT-23
–40°C to 85°C
LTC2050HVHS6#PBF
LTC2050HVHS6#TRPBF
LTAEK
6-Lead Plastic TSOT-23
–40°C to 125°C
LTC2050CS8#PBF
LTC2050CS8#TRPBF
2050
8-Lead Plastic SO
0°C to 70°C
LTC2050IS8#PBF
LTC2050IS8#TRPBF
2050I
8-Lead Plastic SO
–40°C to 85°C
LTC2050HVCS8#PBF
LTC2050HVCS8#TRPBF
2050HV
8-Lead Plastic SO
0°C to 70°C
Rev. F
2
For more information www.analog.com
LTC2050/LTC2050HV
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
SPECIFIED TEMPERATURE RANGE
LTC2050HVIS8#PBF
LTC2050HVIS8#TRPBF
050HVI
8-Lead Plastic SO
–40°C to 85°C
6-Lead Plastic TSOT-23
–55°C to 150°C
AUTOMOTIVE PRODUCTS**
LTC2050HVMPS6#WPBF
LTC2050HVMPS6#WTRPBF LTHGP
Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
**Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These
models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local
Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for these models.
ELECTRICAL
CHARACTERISTICS
(LTC2050/LTC2050HV)
The l denotes the specifications which apply over
the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 3V unless otherwise noted. (Note 3)
C, I SUFFIXES
PARAMETER
CONDITIONS
Input Offset Voltage
(Note 2)
Average Input Offset Drift
(Note 2)
MIN
MAX
±0.5
±3
±1
LTC2050HV
l
LTC2050
l
LTC2050HV
l
Input Noise Voltage
RS = 100Ω, 0.01Hz to 10Hz
Input Capacitance
Common Mode Rejection Ratio
Power Supply Rejection Ratio
LTC2050/LTC2050HV
VCM = GND to (V+ – 1.3)
VCM = GND to (V+ – 1.3)
VS = 2.7V to 6V
l
l
Large-Signal Voltage Gain
RL = 10k
l
Output Voltage Swing High
Output Voltage Swing Low
RL = 2k to GND
RL = 10k to GND
RL = 2k to GND
RL = 10k to GND
l
l
115
110
120
115
120
115
2.85
2.95
l
l
Slew Rate
Gain Bandwidth Product
Supply Current
l
Shutdown Pin Input High Voltage (VIH)
l
Shutdown Pin Input Current
Internal Sampling Frequency
VSHDN = GND
l
±0.5
±3
±20
±1
UNITS
µV
µV/°C
nV/√mo
±75
±4000
±50
±4000
±150
±1000
±100
±1000
pA
pA
pA
pA
pA
pA
pA
pA
1.5
1.5
µVP-P
1.7
1.7
pF
130
130
130
130
140
140
2.94
2.98
1
1
2
dB
dB
dB
dB
dB
dB
V
V
mV
mV
V/µs
130
130
130
130
140
140
2.94
2.98
1
1
2
0.75
l
l
Shutdown Pin Input Low Voltage (VIL)
MAX
50
±75
±300
±50
±100
±150
±200
±100
±150
115
110
120
115
120
115
2.85
2.95
10
10
3
VSHDN = VIH, No Load
VSHDN = VIL
TYP
±0.05
50
±20
LTC2050
l
Input Offset Current
MIN
±0.03
l
Long-Term Offset Drift
Input Bias Current
H SUFFIX
TYP
10
10
3
1.1
10
–
V + 0.5
V+ – 0.5
MHz
0.75
1.2
10
–
V + 0.5
mA
µA
V
–0.5
–3
µA
V+ – 0.5
–0.5
7.5
–3
V
7.5
kHz
Rev. F
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3
LTC2050/LTC2050HV
ELECTRICAL
CHARACTERISTICS
The
l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (LTC2050/LTC2050HV) VS = 5V unless otherwise noted. (Note 3)
C, I SUFFIXES
PARAMETER
CONDITIONS
Input Offset Voltage
(Note 2)
Average Input Offset Drift
(Note 2)
LTC2050HVMP
MIN
MAX
±0.5
±3
MIN
TYP
MAX
±0.5
±3
±0.03
l
l
Long-Term Offset Drift
Input Bias Current
H, MP SUFFIX
TYP
±0.05
±0.10
50
LTC2050
±150
±4000
pA
pA
±7
±50
±150
±7
±50
±4000
pA
pA
±7
±50
±8000
pA
pA
l
l
±300
±400
±300
±1000
pA
pA
l
±100
±200
±100
±1000
pA
pA
±2000
pA
LTC2050
LTC2050HV
l
Input Noise Voltage
RS = 100Ω, 0.01Hz to 10Hz
Common Mode Rejection Ratio
LTC2050/LTC2050HV
VCM = GND to (V+ – 1.3)
VCM = GND to (V+ – 1.3)
l
LTC2050HVMP
VCM = GND to (V+ – 1.3)
l
Power Supply Rejection Ratio
1.5
VS = 2.7V to 6V
l
LTC2050HVMP
VS = 4.5V to 11V
Large-Signal Voltage Gain
nV/√mo
±75
LTC2050HVMP
LTC2050HVMP
µV/°C
µV/°C
±150
±300
l
Input Offset Current
µV
±75
l
LTC2050HV
50
UNITS
120
115
120
115
130
130
130
130
l
RL = 10k
1.5
µVP-P
120
110
130
130
dB
dB
107
130
dB
120
115
130
130
dB
dB
117
112
130
130
dB
dB
l
125
120
140
140
125
115
140
140
dB
dB
4.85
4.95
4.94
4.98
4.85
4.95
4.94
4.98
V
V
Output Voltage Swing High
RL = 2k to GND
RL = 10k to GND
l
l
Output Voltage Swing Low
RL = 2k to GND
RL = 10k to GND
l
l
1
1
10
10
1
1
10
10
mV
mV
Slew Rate
2
2
V/µs
Gain Bandwidth Product
3
3
MHz
Supply Current
VSHDN = VIH, No Load
VSHDN = VIL
Shutdown Pin Input Low Voltage (VIL)
Internal Sampling Frequency
l
VSHDN = GND
l
1.2
15
0.8
V– + 0.5
l
Shutdown Pin Input High Voltage (VIH)
Shutdown Pin Input Current
0.8
l
l
V+ – 0.5
1.3
15
V– + 0.5
V
–7
µA
V+ – 0.5
–0.5
7.5
–7
mA
µA
V
–0.5
7.5
kHz
Rev. F
4
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LTC2050/LTC2050HV
ELECTRICAL
CHARACTERISTICS
(LTC2050HV)
The l denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at TA = 25°C. VS = ±5V unless otherwise noted. (Note 3)
C, I SUFFIXES
PARAMETER
CONDITIONS
Input Offset Voltage
(Note 2)
Average Input Offset Drift
(Note 2)
LTC2050HVMP
MIN
MAX
±0.5
±3
MIN
TYP
MAX
±0.5
±3
±0.03
l
l
Long-Term Offset Drift
Input Bias Current (Note 4)
H, MP SUFFIX
TYP
±0.05
±0.10
50
±25
LTC2050HV
l
50
±125
±300
LTC2050HVMP
l
LTC2050HVMP
RS = 100Ω, 0.01Hz to 10Hz
Common Mode Rejection Ratio
LTC2050HV
VCM = V– to (V+ – 1.3)
VCM = V– to (V+ – 1.3)
l
LTC2050HVMP
VCM = V– to (V+ – 1.3)
l
Power Supply Rejection Ratio
1.5
VS = 2.7V to 11V
l
LTC2050HVMP
VS = 4.5 to 11V
Large-Signal Voltage Gain
Maximum Output Voltage Swing
120
115
130
130
120
115
130
130
l
RL = 10k
RL = 2k to GND
RL = 10k to GND
±25
±125
±8000
pA
pA
±250
±1000
pA
pA
±2000
pA
µVP-P
120
115
130
130
dB
dB
112
130
dB
120
115
130
130
dB
dB
117
112
130
130
dB
dB
125
120
140
140
125
120
140
140
dB
dB
l
l
±4.75
±4.90
±4.94
±4.98
±4.50
±4.85
±4.94
±4.98
V
V
2
Gain Bandwidth Product
2
3
VSHDN = VIH, No Load
VSHDN = VIL
l
Shutdown Pin Input High Voltage (VIH)
l
VSHDN
= V–
1
l
l
Shutdown Pin Input Low Voltage (VIL)
Shutdown Pin Input Current
1.5
l
Slew Rate
Supply Current
nV/√mo
pA
pA
l
Input Noise Voltage
µV/°C
µV/°C
±125
±4000
±250
±500
LTC2050HV
µV
±25
l
Input Offset Current (Note 4)
UNITS
l
Internal Sampling Frequency
3
1.5
25
1
V – + 0.5
V + – 0.5
MHz
1.6
25
V – + 0.5
V + – 0.5
–3
7.5
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: These parameters are guaranteed by design. Thermocouple effects
preclude measurements of these voltage levels during automated testing.
Note 3: All versions of the LTC2050 are designed, characterized and
expected to meet the extended temperature limits of – 40°C and 125°C.
V/µs
–20
mA
µA
V
V
–3
7.5
–20
µA
kHz
The LTC2050C/LTC2050HVC are guaranteed to meet the temperature
limits of 0°C and 70°C. The LTC2050I/LTC2050HVI are guaranteed to meet
the temperature limits of –40°C and 85°C. The LTC2050H/LTC2050HVH
are guaranteed to meet the temperature limits of –40°C and 125°C. The
LTC2050HVMP is guaranteed to meet the temperature limits of –55°C
and 150°C.
Note 4: The bias current measurement accuracy depends on the proximity
of the supply bypass capacitor to the device under test, especially at ±5V
supplies. Because of testing limitations on the placement of this bypass
capacitor, the bias current at ±5V supplies is guaranteed by design to meet
the data sheet limits, but tested to relaxed limits.
Rev. F
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5
LTC2050/LTC2050HV
TYPICAL PERFORMANCE CHARACTERISTICS
Common Mode Rejection Ratio
vs Frequency
140
DC CMRR vs Common Mode
Input Voltage
VS = 3V OR 5V
VCM = 0.5VP-P
120
120
100
–PSRR
80
60
80
40
20
20
0
0
10k
100
1k
FREQUENCY (Hz)
100k
6
0
2
1
3
4
10
100
2050 G02
OUTPUT VOLTAGE (V)
2
3
VS = 5V
4
3
VS = 3V
2
1
1
0
0
0.01
2050 G03
RL TO GND
4
VS = 3V
1M
100k
5
5
4
1k
10k
FREQUENCY (Hz)
Output Swing vs Load Resistance
±5V Supply
6
2
1
0
–1
–2
–3
–4
2
10
8
6
4
LOAD RESISTANCE (kΩ)
0.1
1
OUTPUT CURRENT (mA)
Output Swing vs Output Current
±5V Supply
GAIN (dB)
0
–1
–2
120
40
GAIN
140
20
160
0
–3
–20
–4
0.1
1.0
OUTPUT CURRENT (mA)
10
2050 G07
VS = 3V OR 5V
CL = 35pF
RL = 10kΩ
–40
100
1k
10k
100k
FREQUENCY (Hz)
10
2050 G06
10k
PHASE (DEG)
1
6
8
4
LOAD RESISTANCE (kΩ)
100
PHASE
60
2
–5
0.01
80
80
3
2
Input Bias Current vs Temperature
(LTC2050)
100
RL TO GND
0
2050 G05
Gain/Phase vs Frequency
5
4
–5
10
INPUT BIAS CURRENT (pA)
0
2050 G04
OUTPUT SWING (V)
0
5
Output Swing vs Output Current
VS = 5V
3
TA = 25°C
VCM (V)
RL TO GND
5
20
2050 G01
Output Voltage Swing vs
Load Resistance
+PSRR
60
40
OUTPUT SWING (V)
10
VS = 5V
VS = 3V
60
40
1
80
PSRR (dB)
CMRR (dB)
CMRR (dB)
120
100
100
OUTPUT SWING (V)
PSRR vs Frequency
140
1k
VS = 5V
100
VS = 3V
10
180
1M
200
10M
2050 G08
1
–50
–25
75
50
0
25
TEMPERATURE (°C)
100
125
2050 G09
Rev. F
6
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LTC2050/LTC2050HV
TYPICAL PERFORMANCE CHARACTERISTICS
Input Bias Current vs Temperature
(LTC2050HV)
Input Bias Current vs Temperature
(LTC2050HVMP)
10k
VS = 5V
VS = ±5V
INPUT BIAS CURRENT (pA)
INPUT BIAS CURRENT (pA)
10k
1k
100
10
1
–50 –25
0
VS = 3V
VS = 5V
VS = ±5V
1k
100
10
1
–50
25 50 75 100 125 150
TEMPERATURE (°C)
–15
20
55
TEMPERATURE (°C)
90
2050 G10
2050 G11
Input Bias Current vs Input
Common Mode Voltage
(LTC2050HV)
160
60
140
50
INPUT BIAS CURRENT (pA)
INPUT BIAS CURRENT MAGNITUDE (pA)
Input Bias Current vs Input
Common Mode Voltage
120
VS = 5V
100
80
60
VS = 3V
40
40
VS = ±5V
30
20
VS = 5V
10
VS = 3V
0
20
0
0
1
2
125
4
3
INPUT COMMON MODE VOLTAGE (V)
–10
5
–5
–1
1
3
–3
INPUT COMMON MODE VOLTAGE (V)
2050 G12
5
2050 G13
Transient Response
Input Overload Recovery
1.5
OUTPUT (V)
0
0.5/DIV
0
INPUT (V)
–0.2
AV = 1
RL = 100k
CL = 50pF
VS = 5V
1µs/DIV
2050 G14
AV = –100
RL = 100k
CL = 10pF
VS = ±1.5V
500µs/DIV
2050 G15
Rev. F
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7
LTC2050/LTC2050HV
TYPICAL PERFORMANCE CHARACTERISTICS
Sampling Frequency
vs Supply Voltage
10
TA = 25°C
9
8
7
6
5
9
SAMPLING FREQUENCY (kHz)
SAMPLING FREQUENCY (kHz)
10
2.5
3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
3.0
5.5
8
6
5
–50 –25
6.0
0
25 50 75 100 125 150
TEMPERATURE (°C)
2050 G17
2050 G16
Supply Current vs Temperature
1.1
TA = 25°C
1.0
SUPPLY CURRENT (mA)
1.0
SUPPLY CURRENT (mA)
VS = 5V
7
Supply Current vs Supply Voltage
1.2
0.8
0.6
0.4
0.9
0.8
0.7
0.6
0.2
0
Sampling Frequency
vs Temperature
2
4
8
6
SUPPLY VOLTAGE (V)
10
2050 G18
VS = 3V
VS = 5V
VS = ±5V
0.5
–50 –30 –10 10 30 50 70 90 110 130 150
TEMPERATURE (°C)
2050 G19
Rev. F
8
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LTC2050/LTC2050HV
TEST CIRCUITS
Electrical Characteristics Test Circuit
100k
OUTPUT
V+
10Ω
4
3
5
–
LTC2050
+
1
2
RL
V–
2050 TC01
DC−10Hz Noise Test Circuit
100k
10Ω
4
3
–
LTC2050
+
475k
1
158k
0.1µF
316k
0.01µF
475k
–
0.01µF
LT1012
+
FOR 1Hz NOISE BW INCREASE ALL THE CAPACITORS BY A FACTOR OF 10.
TO X-Y
RECORDER
2050 TC02
Rev. F
For more information www.analog.com
9
LTC2050/LTC2050HV
APPLICATIONS INFORMATION
Shutdown
The LTC2050 includes a shutdown pin in the 6-lead
SOT‑23 and the SO-8 version. When this active low pin
is high or allowed to float, the device operates normally.
When the shutdown pin is pulled low, the device enters
shutdown mode; supply current drops to 3µA, all clocking stops, and both inputs and output assume a high
impedance state.
Clock Feedthrough, Input Bias Current
The LTC2050 uses auto-zeroing circuitry to achieve an
almost zero DC offset over temperature, common mode
voltage, and power supply voltage. The frequency of the
clock used for auto-zeroing is typically 7.5kHz. The term
clock feedthrough is broadly used to indicate visibility of
this clock frequency in the op amp output spectrum. There
are typically two types of clock feedthrough in auto zeroed
op amps like the LTC2050.
The first form of clock feedthrough is caused by the settling
of the internal sampling capacitor and is input referred;
that is, it is multiplied by the closed loop gain of the op
amp. This form of clock feedthrough is independent of the
magnitude of the input source resistance or the magnitude of the gain setting resistors. The LTC2050 has a residue clock feedthrough of less then 1µVRMS input referred
at 7.5kHz.
The second form of clock feedthrough is caused by the
small amount of charge injection occurring during the
sampling and holding of the op amp’s input offset voltage. The current spikes are multiplied by the impedance
seen at the input terminals of the op amp, appearing at the
output multiplied by the closed loop gain of the op amp.
To reduce this form of clock feedthrough, use smaller
valued gain setting resistors and minimize the source
resistance at the input. If the resistance seen at the inputs
is less than 10k, this form of clock feedthrough is less
than 1µVRMS input referred at 7.5kHz, or less than the
amount of residue clock feedthrough from the first form
described above.
Placing a capacitor across the feedback resistor reduces
either form of clock feedthrough by limiting the bandwidth
of the closed loop gain.
Input bias current is defined as the DC current into the
input pins of the op amp. The same current spikes that
cause the second form of clock feedthrough described
above, when averaged, dominate the DC input bias current
of the op amp below 70°C.
At temperatures above 70°C, the leakage of the ESD protection diodes on the inputs increases the input bias currents of both inputs in the positive direction, while the
current caused by the charge injection stays relatively
constant. At elevated temperatures (above 85°C) the
leakage current begins to dominate and both the negative
and positive pin’s input bias currents are in the positive
direction (into the pins).
Input Pins, ESD Sensitivity
ESD voltages above 700V on the input pins of the op amp
will cause the input bias currents to increase (more DC
current into the pins). At these voltages, it is possible to
damage the device to a point where the input bias current
exceeds the maximums specified in this data sheet.
Rev. F
10
For more information www.analog.com
LTC2050/LTC2050HV
TYPICAL APPLICATIONS
Single Supply Thermocouple Amplifier
1k
1%
255k
1%
100Ω
0.068µF
5V
5V
2
4
LT1025A
K
GND
R–
5
4
7
–
3
+
5
–
1
LTC2050
+
VOUT
10mV/°C
2
0.1µF
TYPE K
LT1025 COMPENSATES COLD JUNCTION
OVER 0°C TO 100°C TEMPERATURE RANGE
2050 TA03
Gain of 1001 Single Supply Instrumentation Amplifier
0.1µF
10Ω
10k
V+
10k
4
–VIN
LTC2050
3
V+
5
–
+
10Ω
1
2
+VIN
4
5
–
LTC2050
3
+
1
VOUT
2
OUTPUT DC OFFSET ≤ 6mV
FOR 0.1% RESISTORS, CMRR = 54dB
2050 TA04
Instrumentation Amplifier with 100V Common Mode Input Voltage
1k
1M
V+
+
VIN
–
1M
4
1M
3
1k
–
LTC2050HV
+
V+
5
2
V–
1
1k
4
3
–
5
LTC2050HV
+
1
VOUT
2
V–
OUTPUT OFFSET ≤3mV
FOR 0.1% RESISTORS, CMRR = 54dB
2050 TA06
Rev. F
For more information www.analog.com
11
LTC2050/LTC2050HV
TYPICAL APPLICATIONS
High Precision 3-Input Mux
1.1k
10k
SHDN
4
IN 1 3
AV = 10
1
LTC2050
+
10k
OUT
SHDN
5
SEL2
10Ω
4
SEL1
5
–
–
1
LTC2050
IN 2 3
AV = 1000
+
4
–
SHDN
IN 3 3
AV = 1
SEL3
5
1
LTC2050
+
2050 TA07
SELECT INPUTS ARE CMOS LOGIC COMPATIBLE
Low Side Power Supply Current Sensing
5V
3
4
+
5
–
2
10Ω
TO
MEASURED
CIRCUIT
1
LTC2050HV
10k
OUT
3V/AMP
LOAD CURRENT
IN MEASURED
CIRCUIT, REFERRED
TO –5V
3mΩ
0.1µF
LOAD CURRENT
–5V
2050 TA08
Rev. F
12
For more information www.analog.com
LTC2050/LTC2050HV
PACKAGE DESCRIPTION
S5 Package
5-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1635 Rev B)
0.62
MAX
0.95
REF
2.90 BSC
(NOTE 4)
1.22 REF
1.4 MIN
3.85 MAX 2.62 REF
2.80 BSC
1.50 – 1.75
(NOTE 4)
PIN ONE
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.45 TYP
5 PLCS (NOTE 3)
0.95 BSC
0.80 – 0.90
0.20 BSC
0.01 – 0.10
1.00 MAX
DATUM ‘A’
0.30 – 0.50 REF
0.09 – 0.20
(NOTE 3)
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
1.90 BSC
S5 TSOT-23 0302 REV B
Rev. F
For more information www.analog.com
13
LTC2050/LTC2050HV
PACKAGE DESCRIPTION
S6 Package
6-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1636)
0.62
MAX
2.90 BSC
(NOTE 4)
0.95
REF
1.22 REF
3.85 MAX 2.62 REF
1.4 MIN
2.80 BSC
1.50 – 1.75
(NOTE 4)
PIN ONE ID
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.45
6 PLCS (NOTE 3)
0.95 BSC
0.80 – 0.90
0.20 BSC
0.01 – 0.10
1.00 MAX
DATUM ‘A’
0.30 – 0.50 REF
0.09 – 0.20
(NOTE 3)
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
1.90 BSC
S6 TSOT-23 0302
Rev. F
14
For more information www.analog.com
LTC2050/LTC2050HV
PACKAGE DESCRIPTION
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610 Rev G)
.050 BSC
.189 – .197
(4.801 – 5.004)
NOTE 3
.045 ±.005
8
.245
MIN
.160 ±.005
.010 – .020
× 45°
(0.254 – 0.508)
.053 – .069
(1.346 – 1.752)
0°– 8° TYP
NOTE:
1. DIMENSIONS IN
.014 – .019
(0.355 – 0.483)
TYP
INCHES
(MILLIMETERS)
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
4. PIN 1 CAN BE BEVEL EDGE OR A DIMPLE
REVISION HISTORY
5
.150 – .157
(3.810 – 3.988)
NOTE 3
1
RECOMMENDED SOLDER PAD LAYOUT
.016 – .050
(0.406 – 1.270)
6
.228 – .244
(5.791 – 6.197)
.030 ±.005
TYP
.008 – .010
(0.203 – 0.254)
7
2
3
4
.004 – .010
(0.101 – 0.254)
.050
(1.270)
BSC
SO8 REV G 0212
(Revision history begins at Rev D)
REV
DATE
DESCRIPTION
D
08/17
Updated TJMAX
E
11/18
Added MP option (higher temperature version)
F
10/19
Added Automotive product option
PAGE NUMBER
2
1, 2, 4-6, 7-8
All
Rev. F
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications
subject to change without notice. No license For
is granted
implication or
otherwise under any patent or patent rights of Analog Devices.
more by
information
www.analog.com
15
LTC2050/LTC2050HV
TYPICAL APPLICATION
Ground Referred Precision Current Sources
LT1034
0 ≤ IOUT ≤ 4mA
(V–) + 1.5V ≤ VOUT ≤ – 1V
V+
10k
4
3
+
VOUT
–
1.235V
IOUT = ———
RSET
5
–
LTC2050
+
1
3
2
RSET
10k
4
1.235V
IOUT = ———
RSET
+
0 ≤ IOUT ≤ 4mA
0.2V ≤ VOUT ≤ (V+) – 1.5V
+
RSET
5
LTC2050
–
1
2
V–
VOUT
–
LT1034
2050 TA05
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LTC1049
Low Power Zero-Drift Op Amp
Low Supply Current 200µA
LTC1050
Precision Zero-Drift Op Amp
Single Supply Operation 4.75V to 16V, Noise Tested and Guaranteed
LTC1051/LTC1053
Precision Zero-Drift Op Amp
Dual/Quad
LTC1150
±15V Zero-Drift Op Amp
High Voltage Operation ±18V
LTC1152
Rail-to-Rail Input and Output Zero-Drift Op Amp
Single Zero-Drift Op Amp with Rail-to-Rail Input and Output and Shutdown
LT 1677
Low Noise Rail-to-Rail Input and Output
Precision Op Amp
VOS = 90µV, VS = 2.7V to 44V
LT1884/LT1885
Rail-to-Rail Output Precision Op Amp
VOS = 50µV, IB = 400pA, VS = 2.7V to 40V
LTC2051
Dual Zero-Drift Op Amp
Dual Version of the LTC2050 in MS8 Package
®
Rev. F
16
10/19
For more information www.analog.com
www.analog.com
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