LTC2050CS8#TR [Linear]
LTC2050 - Zero-Drift Operational Amplifiers in SOT-23; Package: SO; Pins: 8; Temperature Range: 0°C to 70°C;型号: | LTC2050CS8#TR |
厂家: | Linear |
描述: | LTC2050 - Zero-Drift Operational Amplifiers in SOT-23; Package: SO; Pins: 8; Temperature Range: 0°C to 70°C 运算放大器 放大器电路 功率放大器 光电二极管 斩波器 |
文件: | 总16页 (文件大小:175K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
LTC2050/LTC2050HV
Zero-Drift
Operational Amplifiers
in SOT-23
FEATURES
DESCRIPTION
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).
n
Maximum Offset Voltage of 3μV
n
Maximum Offset Voltage Drift of 30nV/°C
n
Noise: 1.5μV (0.01Hz to 10Hz Typ)
P-P
n
Voltage Gain: 140dB (Typ)
PSRR: 130dB (Typ)
CMRR: 130dB (Typ)
n
n
n
Supply Current: 0.8mA (Typ)
Supply Operation: 2.7V to 6V (LTC2050)
n
The LTC2050, despite its miniature size, features uncom-
promisingDCperformance.Thetypicalinputoffsetvoltage
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.
2.7V to 5.5V (LTC2050HV)
n
Extended Common Mode Input Range
n
Output Swings Rail-to-Rail
n
Input Overload Recovery Time: 2ms (Typ)
n
Operating Temperature Range: –40°C to 125°C
n
SOT-23 Package
The input common mode voltage ranges from the nega-
tive 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
APPLICATIONS
n
Thermocouple Amplifiers
n
Electronic Scales
n
Medical Instrumentation
Strain Gauge Amplifiers
High Resolution Data Acquisition
DC Accurate RC Active Filters
features a 1.5μV DC to 10Hz noise and a 3MHz gain
P-P
n
bandwidth product.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
n
n
n
Low Side Current Sense
TYPICAL APPLICATION
Differential Bridge Amplifier
Input Referred Noise 0.1Hz to 10Hz
2
5V
5V
50Ω
GAIN
TRIM
0.1μF
18.2k
0.1μF
1
0
350Ω
STRAIN
GAUGE
5
4
–
1
A
V
= 100
LTC2050HV
–1
–2
3
+
2
0.1μF
18.2k
0
2
4
8
6
10
2050 TA01
TIME (SEC)
–5V
2050fb
1
LTC2050/LTC2050HV
ABSOLUTE MAXIMUM RATINGS
(Note 1)
+
–
Total Supply Voltage (V to V )
Operating Temperature Range................ –40°C to 125°C
Specified Temperature Range
(Note 3) ............................................. –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
LTC2050..................................................................7V
LTC2050HV...........................................................12V
Input Voltage ......................... (V + 0.3V) to (V – 0.3V)
Output Short-Circuit Duration ......................... Indefinite
+
–
PIN CONFIGURATION
TOP VIEW
TOP VIEW
TOP VIEW
SHDN
–IN
1
2
3
4
8
7
6
5
NC
+
+
OUT 1
–
5 V
OUT 1
–
6 V
+
V
V
2
V
2
5 SHDN
+IN
OUT
NC
+IN 3
4 –IN
+IN 3
4 –IN
–
V
S5 PACKAGE
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
T = 125°C, θ = 230°C/W
JMAX
5-LEAD PLASTIC TSOT-23
S8 PACKAGE
8-LEAD PLASTIC SO
= 125°C, θ = 190°C/W
T
= 125°C, θ = 250°C/W
JMAX
JA
JA
T
JMAX
JA
ORDER INFORMATION
LEAD FREE FINISH
LTC2050CS5#PBF
LTC2050IS5#PBF
TAPE AND REEL
PART MARKING*
LTAEG
LTAEG
LTAEG
LTAEH
LTAEH
LTAEH
LTAEJ
PACKAGE DESCRIPTION
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
8-Lead Plastic SO
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
LTC2050CS5#TRPBF
LTC2050IS5#TRPBF
LTC2050HS5#TRPBF
LTC2050HVCS5#TRPBF
LTC2050HVIS5#TRPBF
LTC2050HVHS5#TRPBF
LTC2050CS6#TRPBF
LTC2050IS6#TRPBF
LTC2050HS6#TRPBF
LTC2050HVCS6#TRPBF
LTC2050HVIS6#TRPBF
LTC2050HVHS6#TRPBF
LTC2050CS8#TRPBF
LTC2050IS8#TRPBF
LTC2050HVCS8#TRPBF
LTC2050HVIS8#TRPBF
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
LTC2050HS5#PBF
LTC2050HVCS5#PBF
LTC2050HVIS5#PBF
LTC2050HVHS5#PBF
LTC2050CS6#PBF
LTC2050IS6#PBF
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
LTAEJ
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
LTC2050HS6#PBF
LTC2050HVCS6#PBF
LTC2050HVIS6#PBF
LTC2050HVHS6#PBF
LTC2050CS8#PBF
LTC2050IS8#PBF
LTAEJ
LTAEK
LTAEK
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
LTAEK
2050
2050I
8-Lead Plastic SO
–40°C to 85°C
0°C to 70°C
LTC2050HVCS8#PBF
LTC2050HVIS8#PBF
2050HV
050HVI
8-Lead Plastic SO
8-Lead Plastic SO
–40°C to 85°C
2050fb
2
LTC2050/LTC2050HV
ORDER INFORMATION
LEAD BASED FINISH
TAPE AND REEL
PART MARKING*
LTAEG
LTAEG
LTAEG
LTAEH
LTAEH
LTAEH
LTAEJ
PACKAGE DESCRIPTION
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
LTC2050CS5
LTC2050CS5#TR
LTC2050IS5#TR
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
8-Lead Plastic SO
LTC2050IS5
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
LTC2050HS5
LTC2050HS5#TR
LTC2050HVCS5#TR
LTC2050HVIS5#TR
LTC2050HVHS5#TR
LTC2050CS6#TR
LTC2050IS6#TR
LTC2050HVCS5
LTC2050HVIS5
LTC2050HVHS5
LTC2050CS6
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
LTC2050IS6
LTAEJ
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
LTC2050HS6
LTC2050HS6#TR
LTC2050HVCS6#TR
LTC2050HVIS6#TR
LTC2050HVHS6#TR
LTC2050CS8#TR
LTC2050IS8#TR
LTAEJ
LTC2050HVCS6
LTC2050HVIS6
LTC2050HVHS6
LTC2050CS8
LTAEK
LTAEK
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
LTAEK
2050
LTC2050IS8
2050I
8-Lead Plastic SO
–40°C to 85°C
0°C to 70°C
LTC2050HVCS8
LTC2050HVIS8
LTC2050HVCS8#TR
LTC2050HVIS8#TR
2050HV
050HVI
8-Lead Plastic SO
8-Lead Plastic SO
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
2050fb
3
LTC2050/LTC2050HV
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
H SUFFIX
TYP
PARAMETER
CONDITIONS
(Note 2)
MIN
TYP
MAX
3
MIN
MAX
3
UNITS
μV
Input Offset Voltage
Average Input Offset Drift
Long-Term Offset Drift
Input Bias Current
0.5
0.5
l
(Note 2)
0.03
0.05
μV/°C
nV/√mo
50
20
50
20
LTC2050
75
300
75
4000
pA
pA
l
l
l
l
LTC2050HV
LTC2050
1
50
100
1
50
4000
pA
pA
Input Offset Current
150
200
150
1000
pA
pA
LTC2050HV
100
150
100
1000
pA
pA
Input Noise Voltage
R = 100Ω, 0.01Hz to 10Hz
S
1.5
1.7
1.5
1.7
μV
P-P
Input Capacitance
pF
+
+
Common Mode Rejection Ratio
V
V
= GND to (V – 1.3)
115
110
130
130
115
110
130
130
dB
dB
CM
CM
l
l
l
= GND to (V – 1.3)
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Output Voltage Swing High
Output Voltage Swing Low
V = 2.7V to 6V
S
120
115
130
130
120
115
130
130
dB
dB
R = 10k
120
115
140
140
120
115
140
140
dB
dB
L
l
l
R = 2k to GND
R = 10k to GND
2.85
2.95
2.94
2.98
2.85
2.95
2.94
2.98
V
V
L
L
l
l
R = 2k to GND
R = 10k to GND
1
1
10
10
1
1
10
10
mV
mV
L
L
Slew Rate
2
3
2
3
V/μs
MHz
Gain Bandwidth Product
Supply Current
l
l
V
V
= V , No Load
0.75
1.1
10
0.75
1.2
10
mA
μA
SHDN
SHDN
IH
= V
IL
–
–
l
l
l
Shutdown Pin Input Low Voltage (V )
V + 0.5
V + 0.5
V
V
IL
+
+
Shutdown Pin Input High Voltage (V )
V – 0.5
V – 0.5
IH
Shutdown Pin Input Current
Internal Sampling Frequency
V
SHDN
= GND
–0.5
7.5
–3
–0.5
7.5
–3
μA
kHz
2050fb
4
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
H SUFFIX
TYP
PARAMETER
CONDITIONS
(Note 2)
MIN
TYP
MAX
3
MIN
MAX
3
UNITS
μV
Input Offset Voltage
Average Input Offset Drift
Long-Term Offset Drift
Input Bias Current
0.5
0.5
l
(Note 2)
0.03
0.05
μV/°C
nV/√mo
50
75
50
75
LTC2050
150
300
150
4000
pA
pA
l
l
l
l
LTC2050HV
LTC2050
7
50
150
7
50
4000
pA
pA
Input Offset Current
300
400
300
1000
pA
pA
LTC2050HV
100
200
100
1000
pA
pA
Input Noise Voltage
R = 100Ω, 0.01Hz to 10Hz
S
1.5
1.5
μV
P-P
+
+
Common Mode Rejection Ratio
V
V
= GND to (V – 1.3)
120
115
130
130
120
110
130
130
dB
dB
CM
CM
l
l
l
= GND to (V – 1.3)
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Output Voltage Swing High
Output Voltage Swing Low
V = 2.7V to 6V
S
120
115
130
130
120
115
130
130
dB
dB
R = 10k
125
120
140
140
125
115
140
140
dB
dB
L
l
l
R = 2k to GND
R = 10k to GND
4.85
4.95
4.94
4.98
4.85
4.95
4.94
4.98
V
V
L
L
l
l
R = 2k to GND
R = 10k to GND
1
1
10
10
1
1
10
10
mV
mV
L
L
Slew Rate
2
3
2
3
V/μs
MHz
Gain Bandwidth Product
Supply Current
l
l
V
V
= V , No Load
0.8
1.2
15
0.8
1.3
15
mA
μA
SHDN
SHDN
IH
= V
IL
–
–
l
l
l
Shutdown Pin Input Low Voltage (V )
V + 0.5
V + 0.5
V
V
IL
+
+
Shutdown Pin Input High Voltage (V )
V – 0.5
V – 0.5
IH
Shutdown Pin Input Current
Internal Sampling Frequency
V
SHDN
= GND
–0.5
7.5
–7
–0.5
7.5
–7
μA
kHz
2050fb
5
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
H SUFFIX
TYP
PARAMETER
CONDITIONS
(Note 2)
MIN
TYP
MAX
3
MIN
MAX
3
UNITS
μV
Input Offset Voltage
Average Input Offset Drift
Long-Term Offset Drift
Input Bias Current (Note 4)
0.5
0.5
l
(Note 2)
0.03
0.05
μV/°C
nV/√mo
50
25
50
25
125
300
125
4000
pA
pA
l
l
Input Offset Current (Note 4)
250
500
250
1000
pA
pA
Input Noise Voltage
R = 100Ω, 0.01Hz to 10Hz
S
1.5
1.5
μV
P-P
–
–
+
+
Common Mode Rejection Ratio
V
V
= V to (V – 1.3)
120
115
130
130
120
115
130
130
dB
dB
CM
CM
l
l
= V to (V – 1.3)
Power Supply Rejection Ratio
Large-Signal Voltage Gain
V = 2.7V to 11V
120
115
130
130
120
115
130
130
dB
dB
S
R = 10k
125
120
140
140
125
120
140
140
dB
dB
L
l
l
Maximum Output Voltage Swing
R = 2k to GND
L
4.75
4.90
4.94
4.98
4.50
4.85
4.94
4.98
V
V
L
R = 10k to GND
Slew Rate
2
3
1
2
3
1
V/μs
MHz
Gain Bandwidth Product
Supply Current
l
l
V
V
= V , No Load
1.5
25
1.6
25
mA
μA
SHDN
SHDN
IH
= V
IL
–
–
l
l
l
Shutdown Pin Input Low Voltage (V )
V + 0.5
V + 0.5
V
V
IL
+
+
Shutdown Pin Input High Voltage (V )
V – 0.5
V – 0.5
IH
–
Shutdown Pin Input Current
Internal Sampling Frequency
V
SHDN
= V
–3
–20
–3
–20
μA
kHz
7.5
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.
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.
Note 2: These parameters are guaranteed by design. Thermocouple effects
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.
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.
2050fb
6
LTC2050/LTC2050HV
TYPICAL PERFORMANCE CHARACTERISTICS
Common Mode Rejection Ratio
vs Frequency
DC CMRR vs Common Mode Input
Voltage
PSRR vs Frequency
140
120
140
120
120
V
V
= 3V OR 5V
S
= 0.5V
CM
P-P
100
–PSRR
100
80
60
40
20
0
100
80
60
40
20
0
80
+PSRR
V
= 5V
S
V
= 3V
60
40
20
0
S
T
= 25°C
A
1
10
100
1k
10k
100k
0
1
2
3
4
5
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
V
CM
(V)
FREQUENCY (Hz)
2050 G01
2050 G02
2050 G14
Output Voltage Swing vs Load
Resistance
Output Swing vs Load Resistance
5V Supply
Output Swing vs Output Current
5
4
6
5
4
3
2
1
0
6
R
L
TO GND
R
TO GND
L
5
4
3
3
V
= 5V
= 3V
V
V
= 5V
= 3V
S
S
S
2
1
0
V
S
–1
–2
–3
–4
–5
2
1
0
0
2
4
6
8
10
10
0.01
0.1
OUTPUT CURRENT (mA)
1
10
0
2
4
6
8
LOAD RESISTANCE (kΩ)
LOAD RESISTANCE (kΩ)
2050 G16
2050 G04
2050 G03
Output Swing vs Output Current
5V Supply
Gain/Phase vs Frequency
Bias Current vs Temperature
5
4
80
10k
1k
100
80
R
L
TO GND
100
120
140
160
180
200
3
PHASE
60
2
1
40
V
S
= 5V
GAIN
0
100
10
1
20
–1
–2
–3
–4
–5
V
S
= 3V
0
V
C
= 3V OR 5V
= 35pF
= 10kΩ
S
L
L
–20
–40
R
0.01
0.1
1.0
10
–50
50
75 100 125
100
1k
10k
100k
1M
10M
–25
0
25
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
FREQUENCY (Hz)
2050 G05
2050 G17
2050 G06
2050fb
7
LTC2050/LTC2050HV
TYPICAL PERFORMANCE CHARACTERISTICS
Input Bias Current vs Input
Common Mode Voltage
(LTC2050HV)
Input Bias Current vs Input
Common Mode Voltage
Transient Response
60
50
40
30
20
10
0
160
140
120
100
80
V
S
= 5V
V
S
=
5V
0.5/DIV
60
V
S
= 3V
V
= 5V
S
40
2050 G07
V
S
= 3V
A
V
= 1
1μs/DIV
20
R
= 100k
= 50pF
= 5V
L
L
S
C
V
–10
0
1
2
4
0
5
–5
–1
1
3
5
3
–3
INPUT COMMON MODE VOLTAGE (V)
INPUT COMMON MODE VOLTAGE (V)
2050 G15
2050 G13
Sampling Frequency
vs Supply Voltage
Sampling Frequency
vs Temperature
Input Overload Recovery
10
9
10
T
= 25°C
A
1.5
9
8
7
6
5
OUTPUT (V)
INPUT (V)
0
0
8
V
= 5V
S
7
–0.2
6
2050 G08
A
V
= –100
= 100k
= 10pF
500μs/DIV
R
L
L
S
C
V
5
=
1.5V
5.0
2.5 3.0 3.5 4.0 4.5
SUPPLY VOLTAGE (V)
5.5
50
TEMPERATURE (°C)
125
6.0
–50
0
25
75 100
–25
2050 G09
2050 G10
Supply Current vs Supply Voltage
Supply Current vs Temperature
1.0
0.8
0.6
0.4
0.2
0
1.2
T
= 25°C
A
V
S
= 5V
1.0
0.8
0.6
0.4
0.2
0
V
S
= 3V
–50
0
25
50
75 100 125
–25
2
4
6
8
10
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
2050 G12
2050 G11
2050fb
8
LTC2050/LTC2050HV
TEST CIRCUITS
Electrical Characteristics Test Circuit
100k
OUTPUT
+
V
10Ω
4
5
–
1
LTC2050
3
+
2
R
L
–
V
2050 TC01
DC-10Hz Noise Test Circuit
100k
475k
10Ω
4
3
0.01μF
–
+
158k
316k
475k
1
LTC2050
–
TO X-Y
RECORDER
0.1μF
0.01μF
LT1012
+
2050 TC02
FOR 1Hz NOISE BW INCREASE ALL THE CAPACITORS BY A FACTOR OF 10.
2050fb
9
LTC2050/LTC2050HV
APPLICATIONS INFORMATION
Shutdown
multipliedbytheclosedloopgainoftheopamp. Toreduce
this form of clock feedthrough, use smaller valued gain
settingresistorsandminimizethesourceresistanceatthe
input. If the resistance seen at the inputs is less than 10k,
TheLTC2050includesashutdownpininthe6-leadSOT-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;supplycurrentdropsto3μA, allclockingstops, and
both inputs and output assume a high impedance state.
this form of clock feedthrough is less than 1μV
input
RMS
referredat7.5kHz,orlessthantheamountofresidueclock
feedthrough from the first form described above.
Placing a capacitor across the feedback resistor reduces
eitherformofclockfeedthroughbylimitingthebandwidth
of the closed loop gain.
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
thisclockfrequencyintheopampoutputspectrum. There
are typically two types of clock feedthrough in auto zeroed
op amps like the LTC2050.
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, whenaveraged, dominatetheDCinputbiascurrent
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 rela-
tivelyconstant. Atelevatedtemperatures(above85°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).
Thefirstformofclockfeedthroughiscausedbythesettling
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
magnitudeoftheinputsourceresistanceorthemagnitude
of the gain setting resistors. The LTC2050 has a residue
clock feedthrough of less then 1μV
at 7.5kHz.
input referred
RMS
Input Pins, ESD Sensitivity
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.
Thecurrentspikesaremultipliedbytheimpedanceseenat
the input terminals of the op amp, appearing at the output
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.
2050fb
10
LTC2050/LTC2050HV
TYPICAL APPLICATIONS
Single Supply Thermocouple Amplifier
1k
1%
255k
1%
100Ω
0.068μF
5V
5
5V
4
3
2
–
+
1
V
OUT
LT1025A
LTC2050
2
10mV/°C
7
–
K
+
GND R–
0.1μF
5
4
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
3
5
V
–
+
10Ω
4
3
1
5
LTC2050
2
–
+
LTC2050
2
1
V
–V
OUT
IN
+V
IN
OUTPUT DC OFFSET ≤ 6mV
FOR 0.1% RESISTORS, CMRR = 54dB
2050 TA04
2050fb
11
LTC2050/LTC2050HV
TYPICAL APPLICATIONS
Instrumentation Amplifier with 100V Common Mode Input Voltage
1k
1M
+
V
+
1M
+
V
5
4
3
–
1k
5
4
3
1
V
IN
–
LTC2050HV
–
1M
1
+
V
OUT
LTC2050HV
2
+
–
2
V
1k
–
V
OUTPUT OFFSET ≤3mV
FOR 0.1% RESISTORS, CMRR = 54dB
2050 TA06
High Precision Three-Input Mux
Low-Side Power Supply Current Sensing
1.1k
10k
5V
SHDN
5
OUT
3
4
SEL1
+
4
3
3V/AMP
5
–
+
1
LOAD CURRENT
IN MEASURED
CIRCUIT, REFERRED
TO –5V
LTC2050HV
1
1
1
LTC2050
10k
–
IN 1
= 10
2
A
V
10Ω
10k
OUT
10Ω
TO
MEASURED
CIRCUIT
3mΩ
LOAD CURRENT
SHDN
SEL2
0.1μF
4
3
5
2050 TA08
–5V
–
+
LTC2050
IN 2
= 1000
A
V
SHDN
SEL3
4
3
5
–
+
LTC2050
IN 3
= 1
A
V
2050 TA07
SELECT INPUTS ARE CMOS LOGIC COMPATIBLE
2050fb
12
LTC2050/LTC2050HV
PACKAGE DESCRIPTION
S5 Package
5-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1635)
0.62
MAX
0.95
REF
2.90 BSC
(NOTE 4)
1.22 REF
1.50 – 1.75
(NOTE 4)
2.80 BSC
1.4 MIN
3.85 MAX 2.62 REF
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
DATUM ‘A’
0.01 – 0.10
1.00 MAX
0.30 – 0.50 REF
1.90 BSC
0.09 – 0.20
(NOTE 3)
NOTE:
S5 TSOT-23 0302 REV B
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
2050fb
13
LTC2050/LTC2050HV
PACKAGE DESCRIPTION
S6 Package
6-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1636)
2.90 BSC
(NOTE 4)
0.62
MAX
0.95
REF
1.22 REF
1.4 MIN
1.50 – 1.75
2.80 BSC
3.85 MAX 2.62 REF
(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
DATUM ‘A’
0.01 – 0.10
1.00 MAX
0.30 – 0.50 REF
1.90 BSC
0.09 – 0.20
(NOTE 3)
S6 TSOT-23 0302 REV B
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
2050fb
14
LTC2050/LTC2050HV
PACKAGE DESCRIPTION
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.189 – .197
(4.801 – 5.004)
.045 .005
NOTE 3
.050 BSC
7
5
8
6
.245
MIN
.160 .005
.150 – .157
(3.810 – 3.988)
NOTE 3
.228 – .244
(5.791 – 6.197)
.030 .005
TYP
1
3
4
2
RECOMMENDED SOLDER PAD LAYOUT
.010 – .020
(0.254 – 0.508)
× 45°
.053 – .069
(1.346 – 1.752)
.004 – .010
(0.101 – 0.254)
.008 – .010
(0.203 – 0.254)
0°– 8° TYP
.016 – .050
(0.406 – 1.270)
.050
(1.270)
BSC
.014 – .019
(0.355 – 0.483)
TYP
NOTE:
INCHES
1. DIMENSIONS IN
(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)
SO8 0303
2050fb
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
15
LTC2050/LTC2050HV
TYPICAL APPLICATION
Ground Referred Precision Current Sources
LT1034
0 ≤ I
≤ 4mA
OUT
–
(V ) + 1.5V ≤ V
≤ – 1V
OUT
+
+
V
V
OUT
–
1.235V
= ———
10k
I
OUT
4
3
5
R
SET
–
+
1
LTC2050
2
3
4
R
SET
5
+
1
LTC2050
2
R
SET
10k
–
1.235V
= ———
I
OUT
–
R
SET
+
V
V
OUT
–
0 ≤ I
≤ 4mA
OUT
OUT
LT1034
+
0.2V ≤ V
≤ (V ) – 1.5V
2050 TA05
RELATED PARTS
PART NUMBER
LTC1049
DESCRIPTION
COMMENTS
Low Supply Current 200μA
Low Power Zero-Drift Op Amp
Precision Zero-Drift Op Amp
Precision Zero-Drift Op Amp
15V Zero-Drift Op Amp
LTC1050
Single Supply Operation 4.75V to 16V, Noise Tested and Guaranteed
Dual/Quad
LTC1051/LTC1053
LTC1150
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
LT1677
Low Noise Rail-to-Rail Input and Output
Precision Op Amp
V
= 90μV, V = 2.7V to 44V
S
OS
LT1884/LT1885
LTC2051
Rail-to-Rail Output Precision Op Amp
Dual Zero-Drift Op Amp
V
= 50μV, IB = 400pA, V = 2.7V to 40V
S
OS
Dual Version of the LTC2050 in MS8 Package
2050fb
LT 0208 REV B • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
16
●
●
© LINEAR TECHNOLOGY CORPORATION 1999
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
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