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LTC 2050 CS5
Datasheet
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ANALOG DEVICES LTC 2050 CS5 Datasheet

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LTC2050/LTC2050HV
Zero-Drift
in SOT-23
FEATURES
n
Maximum Offset Voltage of 3μV
n
Maximum Offset Voltage Drift of 30nV/°C
n
Noise: 1.5μV
n
Voltage Gain: 140dB (Typ)
n
PSRR: 130dB (Typ)
n
CMRR: 130dB (Typ)
n
Supply Current: 0.8mA (Typ)
n
Supply Operation: 2.7V to 6V (LTC2050)
(0.01Hz to 10Hz Typ)
P-P
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
Low Profl e (1mm) SOT-23 (ThinSOT)™ Package
APPLICATIONS
n
Thermocouple Amplifi ers
n
Electronic Scales
n
Medical Instrumentation
n
Strain Gauge Amplifi ers
n
High Resolution Data Acquisition
n
DC Accurate RC Active Filters
n
Low Side Current Sense
DESCRIPTION
The LTC®2050 and LTC2050HV are zero-drift operational amplifi ers 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 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 1.5μV bandwidth product.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including
5481178.
DC to 10Hz noise and a 3MHz gain
P-P
TYPICAL APPLICATION
5V
50Ω GAIN TRIM
350Ω
STRAIN
GAUGE
0.1μF
0.1μF
4
3
18.2k
–
LTC2050HV
+
5V
–5V
Input Referred Noise 0.1Hz to 10HzDifferential Bridge Amplifi er
2
0.1μF
1
18.2k
0
5
1
2
AV = 100
2050 TA01
(μV)
–1
–2
240
TIME (SEC)
8
6
10
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LTC2050/LTC2050HV
N
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 ......................... Indefi nite
PIN CONFIGURATION
TOP VIEW
OUT 1
V– 2
+IN 3
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
T
= 125°C, θJA = 250°C/W
JMAX
5 V
4 –IN
+
OUT 1
–
V
2
+IN 3
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
T
= 125°C, θJA = 230°C/W
JMAX
ORDER INFORMATION
Operating Temperature Range................–40°C to 125°C
Specifi ed Temperature Range
(Note 3) ..................................................–40°C to 125°C
Storage Temperature Range ...................–65°C to 150°C
Lead Temperature (Soldering, 10 sec) ..................300°C
TOP VIEW
+
6 V 5 SHD 4 –IN
SHDN
–IN
+IN
V
TOP VIEW
1
2
3
–
4
S8 PACKAGE
8-LEAD PLASTIC SO
T
= 125°C, θJA = 190°C/W
JMAX
8
7
6
5
NC
+
V
OUT
NC
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 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 LTC2050HVIS8#PBF LTC2050HVIS8#TRPBF 050HVI 8-Lead Plastic SO –40°C to 85°C
2
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LTC2050/LTC2050HV
ORDER INFORMATION
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE
LTC2050CS5 LTC2050CS5#TR LTAEG 5-Lead Plastic TSOT-23 0°C to 70°C LTC2050IS5 LTC2050IS5#TR LTAEG 5-Lead Plastic TSOT-23 – 40°C to 85°C LTC2050HS5 LTC2050HS5#TR LTAEG 5-Lead Plastic TSOT-23 – 40°C to 125°C LTC2050HVCS5 LTC2050HVCS5#TR LTAEH 5-Lead Plastic TSOT-23 0°C to 70°C LTC2050HVIS5 LTC2050HVIS5#TR LTAEH 5-Lead Plastic TSOT-23 – 40°C to 85°C LTC2050HVHS5 LTC2050HVHS5#TR LTAEH 5-Lead Plastic TSOT-23 –40°C to 125°C LTC2050CS6 LTC2050CS6#TR LTAEJ 6-Lead Plastic TSOT-23 0°C to 70°C LTC2050IS6 LTC2050IS6#TR LTAEJ 6-Lead Plastic TSOT-23 – 40°C to 85°C LTC2050HS6 LTC2050HS6#TR LTAEJ 6-Lead Plastic TSOT-23 – 40°C to 125°C LTC2050HVCS6 LTC2050HVCS6#TR LTAEK 6-Lead Plastic TSOT-23 0°C to 70°C LTC2050HVIS6 LTC2050HVIS6#TR LTAEK 6-Lead Plastic TSOT-23 –40°C to 85°C LTC2050HVHS6 LTC2050HVHS6#TR LTAEK 6-Lead Plastic TSOT-23 –40°C to 125°C LTC2050CS8 LTC2050CS8#TR 2050 8-Lead Plastic SO 0°C to 70°C LTC2050IS8 LTC2050IS8#TR 2050I 8-Lead Plastic SO –40°C to 85°C LTC2050HVCS8 LTC2050HVCS8#TR 2050HV 8-Lead Plastic SO 0°C to 70°C LTC2050HVIS8 LTC2050HVIS8#TR 050HVI 8-Lead Plastic SO –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed 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 specifi
cations, go to: http://www.linear.com/tapeandreel/
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LTC2050/LTC2050HV
ELECTRICAL CHARACTERISTICS
(LTC2050/LTC2050HV) The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T
PARAMETER CONDITIONS
Input Offset Voltage (Note 2) ±0.5 ±3 ±0.5 ±3 μV Average Input Offset Drift (Note 2) Long-Term Offset Drift 50 50 nV/√mo Input Bias Current LTC2050
LTC2050HV
Input Offset Current LTC2050
LTC2050HV
Input Noise Voltage R Input Capacitance 1.7 1.7 pF Common Mode Rejection Ratio V
Power Supply Rejection Ratio VS = 2.7V to 6V
Large-Signal Voltage Gain RL = 10k
Output Voltage Swing High RL = 2k to GND
Output Voltage Swing Low RL = 2k to GND
Slew Rate 22V/μs Gain Bandwidth Product 3 3 MHz Supply Current V
Shutdown Pin Input Low Voltage (VIL) Shutdown Pin Input High Voltage (VIH) Shutdown Pin Input Current V Internal Sampling Frequency 7.5 7.5 kHz
= 100Ω, 0.01Hz to 10Hz 1.5 1.5 μV
S
= GND to (V+ – 1.3)
CM
V
= GND to (V+ – 1.3)
CM
R
= 10k to GND
L
R
= 10k to GND
L
= VIH, No Load
SHDN
V
= V
SHDN
IL
= GND
SHDN
l
l
l
l
l
l
l
l
l l
l l
l l
l
l
l
= 25°C. VS = 3V unless otherwise noted. (Note 3)
A
C, I SUFFIXES H SUFFIX
UNITSMIN TYP MAX MIN TYP MAX
±0.03 ±0.05 μV/°C
±20 ±75
±1 ±50
115 110
120 115
120 115
2.85
2.95
V+ – 0.5 V+ – 0.5 V
130 130
130 130
140 140
2.94
2.98 1
1
0.75 1.1
–0.5 –3 –0.5 –3 μA
±300
±100 ±150
±200 ±100
±150
115 110
120 115
120 115
2.85
2.95
10 10
10
V– + 0.5 V– + 0.5 V
±20 ±75
±1 ±50
130 130
130 130
140 140
2.94
2.98 1
1
0.75 1.2
±4000
±4000
±150
±1000
±100
±1000
10 10
10
pA pA
pA pA
pA pA
pA pA
P-P
dB dB
dB dB
dB dB
mV mV
mA
μA
V V
4
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LTC2050/LTC2050HV
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T
PARAMETER CONDITIONS
Input Offset Voltage (Note 2) ±0.5 ±3 ±0.5 ±3 μV Average Input Offset Drift (Note 2) Long-Term Offset Drift 50 50 nV/√mo Input Bias Current LTC2050
LTC2050HV
Input Offset Current LTC2050
LTC2050HV
Input Noise Voltage RS = 100Ω, 0.01Hz to 10Hz 1.5 1.5 μV Common Mode Rejection Ratio VCM = GND to (V+ – 1.3)
Power Supply Rejection Ratio VS = 2.7V to 6V
Large-Signal Voltage Gain RL = 10k
Output Voltage Swing High RL = 2k to GND
Output Voltage Swing Low RL = 2k to GND
Slew Rate 22V/μs Gain Bandwidth Product 3 3 MHz Supply Current V
Shutdown Pin Input Low Voltage (VIL) Shutdown Pin Input High Voltage (V Shutdown Pin Input Current V Internal Sampling Frequency 7.5 7.5 kHz
)
IH
V
= GND to (V+ – 1.3)
CM
R
= 10k to GND
L
R
= 10k to GND
L
= VIH, No Load
SHDN
V
= V
SHDN
IL
= GND
SHDN
= 25°C. (LTC2050/LTC2050HV) VS = 5V unless otherwise noted. (Note 3)
A
C, I SUFFIXES H SUFFIX
l
l
l
l
l
120
l
115 120
l
115 125
l
120
l
4.85
l
4.95
l l
l l
l
l
V+ – 0.5 V+ – 0.5 V
l
±75 ±150
±7 ±50
130 130
130 130
140 140
4.94
4.98 1
1
0.8 1.2
–0.5 –7 –0.5 –7 μA
±0.03 ±0.05 μV/°C
±300
±150 ±300
±400 ±100
±200
120 110
120 115
125 115
4.85
4.95
10 10
15
V– + 0.5 V– + 0.5 V
±75 ±150
±7 ±50
130 130
130 130
140 140
4.94
4.98 1
1
0.8 1.3
±4000
±4000
±300
±1000
±100
±1000
10 10
15
UNITSMIN TYP MAX MIN TYP MAX
pA pA
pA pA
pA pA
pA pA
P-P
dB dB
dB dB
dB dB
V V
mV mV
mA
μA
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LTC2050/LTC2050HV
ELECTRICAL CHARACTERISTICS
(LTC2050HV) The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T
PARAMETER CONDITIONS
Input Offset Voltage (Note 2) ±0.5 ±3 ±0.5 ±3 μV Average Input Offset Drift (Note 2) Long-Term Offset Drift 50 50 nV/√mo Input Bias Current (Note 4)
Input Offset Current (Note 4)
Input Noise Voltage RS = 100Ω, 0.01Hz to 10Hz 1.5 1.5 μV Common Mode Rejection Ratio VCM = V– to (V+ – 1.3)
Power Supply Rejection Ratio VS = 2.7V to 11V
Large-Signal Voltage Gain R
Maximum Output Voltage Swing RL = 2k to GND
Slew Rate 2 2 V/μs Gain Bandwidth Product 3 3 MHz Supply Current V
Shutdown Pin Input Low Voltage (VIL) Shutdown Pin Input High Voltage (V Shutdown Pin Input Current V Internal Sampling Frequency 7.5 7.5 kHz
V
= V– to (V+ – 1.3)
CM
= 10k 125
L
R
= 10k to GND
L
= VIH, No Load
SHDN
V
= V
SHDN
IL
)
IH
–
= V
SHDN
= 25°C. VS = ±5V unless otherwise noted. (Note 3)
A
C, I SUFFIXES H SUFFIX
l
l
l
120
l
115 120
l
115
120
l
±4.75
l
±4.90
l l
l
l
V+ – 0.5 V+ – 0.5 V
l
±25 ±125
130 130
130 130
140 140
±4.94 ±4.98
1 1.5
–3 –20 –3 –20 μA
±0.03 ±0.05 μV/°C
±300 ±250
±500
120 115
120 115
125 120
±4.50 ±4.85
25
V– + 0.5 V– + 0.5 V
±25 ±125
±4000
±250
±1000
130 130
130 130
140 140
±4.94 ±4.98
1 1.6
25
UNITSMIN TYP MAX MIN TYP MAX
pA pA
pA pA
P-P
dB dB
dB dB
dB dB
mA
μA
V V
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.
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 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.
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TYPICAL PERFORMANCE CHARACTERISTICS
LTC2050/LTC2050HV
Common Mode Rejection Ratio vs Frequency
140
120
100
80
60
CMRR (dB)
40
20
0
1 100 1k 100k
10 10k
FREQUENCY (Hz)
VS = 3V OR 5V V
CM
= 0.5V
P-P
2050 G01
DC CMRR vs Common Mode Input Voltage PSRR vs Frequency
140
120
100
80
60
CMRR (dB)
40
20
0
VS = 3V
25
1340
VCM (V)
Output Voltage Swing vs Load Resistance Output Swing vs Output Current
6
RL TO GND
5
4
3
2
OUTPUT SWING (V)
1
0
0
2
VS= 5V
VS= 3V
6
4
LOAD RESISTANCE (kΩ)
10
8
2050 G03
6
5
4
3
2
OUTPUT VOLTAGE (V)
1
0
0.01
0.1 1 10
OUTPUT CURRENT (mA)
VS = 5V
VS = 3V
VS = 5V
TA = 25°C
2050 G02
2050 G04
120
100
80
60
PSRR (dB)
40
20
0
10
100 1k 10k 100k
–PSRR
+PSRR
FREQUENCY (Hz)
Output Swing vs Load Resistance ±5V Supply
5
4
3
2
1
0
–1
OUTPUT SWING (V)
–2
–3
–4
–5
2
0
LOAD RESISTANCE (kΩ)
4
RL TO GND
6
1M
2050 G14
8
10
2050 G16
Output Swing vs Output Current ±5V Supply Gain/Phase vs Frequency Bias Current vs Temperature
5
4
3
2
1
0
–1
OUTPUT SWING (V)
–2
–3
–4
–5
0.01
0.1
OUTPUT CURRENT (mA)
RL TO GND
2050 G17
100
80
60
40
20
GAIN (dB)
0
VS = 3V OR 5V
–20
= 35pF
C
L
= 10kΩ
R
L
–40
101.0
100
1k 100k 1M 10M
FREQUENCY (Hz)
PHASE
GAIN
10k
2050 G05
80
100
120
PHASE (DEG)
140
160
180
200
10k
1k
100
BIAS CURRENT (pA)
10
1
–50
–25
025
TEMPERATURE (°C)
50
VS = 5V
VS = 3V
10075
125
2050 G06
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7
LTC2050/LTC2050HV
TYPICAL PERFORMANCE CHARACTERISTICS
Input Bias Current vs Input Input Bias Current vs Input Common Mode Voltage
160
140
120
100
80
60
40
20
INPUT BIAS CURRENT MAGNITUDE (pA)
0
0
VS = 5V
VS = 3V
12 4
INPUT COMMON MODE VOLTAGE (V)
3
5
2050 G13
Common Mode Voltage
(LTC2050HV)
60
50
40
VS = ±5V
30
20
10
INPUT BIAS CURRENT (pA)
0
–10
–5
INPUT COMMON MODE VOLTAGE (V)
VS = 3V
–1 1 3 5
–3
VS = 5V
2050 G15
Transient Response
0.5/DIV
AV = 1
= 100k
R
L
= 50pF
C
L
= 5V
V
S
1μs/DIV
2050 G07
OUTPUT (V)
INPUT (V)
Input Overload Recovery
1.5
0
0
–0.2
AV = –100
= 100k
R
L
= 10pF
C
L
= ±1.5V
V
S
500μs/DIV
Supply Current vs Supply Voltage Supply Current vs Temperature
1.2 TA = 25°C
1.0
0.8
0.6
0.4
SUPPLY CURRENT (mA)
0.2
2050 G08
Sampling Frequency vs Supply Voltage
10
TA = 25°C
9
8
7
SAMPLING FREQUENCY (kHz)
6
5
2.5
3.53.0 4.54.0 SUPPLY VOLTAGE (V)
5.0 5.5
1.0
0.8
0.6
0.4
SUPPLY CURRENT (mA)
0.2
6.0
2050 G09
Sampling Frequency vs Temperature
10
9
8
7
6
SAMPLING FREQUENCY (kHz)
5
–50
–25
VS = 5V
VS = 3V
VS = 5V
50
25
0
TEMPERATURE (°C)
100
125
2050 G10
75
8
0
24
8
6
SUPPLY VOLTAGE (V)
10
2050 G11
0
–50
0
–25
TEMPERATURE (°C)
50
25
75
100
125
2050 G12
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TEST CIRCUITS
LTC2050/LTC2050HV
Electrical Characteristics Test Circuit
10Ω
10Ω
4
3
–
LTC2050
+
100k
+
V
5
2
–
V
OUTPUT
1
R
L
2050 TC01
DC-10Hz Noise Test Circuit
100k 475k
4
3
–
LTC2050
+
1
0.1μF 0.01μF
475k316k158k
–
LT1012
+
FOR 1Hz NOISE BW INCREASE ALL THE CAPACITORS BY A FACTOR OF 10.
0.01μF
TO X-Y RECORDER
2050 TC02
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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 fl oat, 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 fi rst 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 1μV at 7.5kHz.
input referred
RMS
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 1μV referred at 7.5kHz, or less than the amount of residue clock feedthrough from the fi rst 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 defi ned 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
RMS
input
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
10
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 specifi ed in this data sheet.
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TYPICAL APPLICATIONS
LTC2050/LTC2050HV
Single Supply Thermocouple Amplifi er
1k
1%
5V
2
LT1025A
7
–
GNDKR–
5
4
LT1025 COMPENSATES COLD JUNCTION OVER 0°C TO 100°C TEMPERATURE RANGE
100Ω
+
TYPE K
4
3
–
LTC2050
+
0.1μF
255k
1%
0.068μF
5V
5
2
1
V 10mV/°C
Gain of 1001 Single Supply Instrumentation Amplifi er
10Ω
+
V
10k
4
3
–V
IN
OUTPUT DC OFFSET ≤ 6mV FOR 0.1% RESISTORS, CMRR = 54dB
–
LTC2050
+
5
1
2
10Ω
+V
IN
0.1μF
10k
+
V
4
3
–
LTC2050
+
5
2
OUT
2050 TA03
1
V
OUT
2050 TA04
2050fc
11
LTC2050/LTC2050HV
TYPICAL APPLICATIONS
Instrumentation Amplifi er with 100V Common Mode Input Voltage
1M
+
V
IN
1M
–
1k 1M
+
V
4
3
1k
5
–
LTC2050HV
+
2
–
V
FOR 0.1% RESISTORS, CMRR = 54dB
1k
1
OUTPUT OFFSET ≤3mV
4
–
LTC2050HV
3
+
+
V
5
1
V
OUT
2
–
V
2050 TA06
High Precision 3-Input Mux
10k1.1k
SHDN
4
3
IN 1
A
= 10
V
10Ω
4
3
IN 2
= 1000
A
V
4
3
IN 3
= 1
A
V
SELECT INPUTS ARE CMOS LOGIC COMPATIBLE
–
LTC2050
+
–
LTC2050
+
–
LTC2050
+
5
10k
SHDN
5
SHDN
5
SEL1
1
OUT
SEL2
1
SEL3
1
2050 TA07
MEASURED
CIRCUIT
Low Side Power Supply Current Sensing
5V
5
+
LTC2050HV
–
2
–5V
TO
LOAD CURRENT
3
4
10Ω 10k
3mΩ
0.1μF
OUT 3V/AMP
1
LOAD CURRENT IN MEASURED CIRCUIT, REFERRED TO –5V
2050 TA08
12
2050fc
PACKAGE DESCRIPTION
0.62 MAX
0.95 REF
LTC2050/LTC2050HV
S5 Package
5-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1635)
2.90 BSC (NOTE 4)
1.22 REF
3.85 MAX
0.20 BSC
DATUM ‘A’
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
2.62 REF
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.50 REF
1.4 MIN
0.09 – 0.20 (NOTE 3)
2.80 BSC
1.50 – 1.75 (NOTE 4)
0.80 – 0.90
1.00 MAX
PIN ONE
0.95 BSC
0.30 – 0.45 TYP 5 PLCS (NOTE 3)
0.01 – 0.10
1.90 BSC
S5 TSOT-23 0302 REV B
2050fc
13
LTC2050/LTC2050HV
PACKAGE DESCRIPTION
0.62 MAX
0.95 REF
1.22 REF
S6 Package
6-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1636)
2.90 BSC (NOTE 4)
3.85 MAX
2.62 REF
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.20 BSC
DATUM ‘A’
0.30 – 0.50 REF
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
1.4 MIN
2.80 BSC
0.09 – 0.20 (NOTE 3)
1.50 – 1.75 (NOTE 4)
1.00 MAX
0.95 BSC
0.80 – 0.90
PIN ONE ID
0.30 – 0.45 6 PLCS (NOTE 3)
0.01 – 0.10
1.90 BSC
S6 TSOT-23 0302 REV B
14
2050fc
PACKAGE DESCRIPTION
.050 BSC
LTC2050/LTC2050HV
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.189 – .197
.045 ±.005
(4.801 – 5.004)
8
NOTE 3
7
6
5
.245 MIN
.030 ±.005
TYP
RECOMMENDED SOLDER PAD LAYOUT
.010 – .020
(0.254 – 0.508)
.008 – .010
(0.203 – 0.254)
NOTE:
1. DIMENSIONS IN
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)
s
.016 – .050
(0.406 – 1.270)
INCHES
(MILLIMETERS)
.160 ±.005
.228 – .244
(5.791 – 6.197)
45°
0°– 8° TYP
.053 – .069
(1.346 – 1.752)
.014 – .019
(0.355 – 0.483)
TYP
.150 – .157
(3.810 – 3.988)
NOTE 3
1
3
2
4
.004 – .010
(0.101 – 0.254)
.050
(1.270)
BSC
SO8 0303
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 representa­tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
2050fc
15
LTC2050/LTC2050HV
TYPICAL APPLICATION
Ground Referred Precision Current Sources
0 ≤ I
OUT
0.2V ≤ V
10k
≤ 4mA
OUT
4
–
LTC2050
3
+
≤ (V+) – 1.5V
LT1034
+
V
5
1
2
R
SET
1.235V
I
= ———
OUT
R
+
V
OUT
–
SET
0 ≤ I
OUT
–
) + 1.5V ≤ V
(V
≤ 4mA
10k
OUT
3
4
≤ – 1V
+
LTC2050
–
–
V
LT1034
+
V
OUT
–
1.235V
I
= ———
OUT
R
SET
R
5
2
SET
1
2050 TA05
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
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Precision Op Amp 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
= 90μV, VS = 2.7V to 44V
V
OS
16
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507
●
www.linear.com
2050fc
LT 0709 REV C • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1999
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