ANALOG DEVICES LTC 2050 CS5 Datasheet

LTC2050/LTC2050HV

Zero-Drift

Operational Amplifi ers

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

2050fc

1

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

2050fc

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/

2050fc

3

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

2050fc

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

2050fc

5