Linear Technology LT1783 Datasheet

FEATURES

–900 –600 –300 0 300 600 900

PERCENTAGE OF AMPLIFIERS

INPUT OFFSET VOLTAGE (µV)

1782 G25

25

20

15

10

5

0

VS = 5V, 0V
V

CM

= 2.5V

LT1783

1.25MHz, Over-The-Top

Micropower, Rail-to-Rail

Input and Output Op Amp in SOT-23

U

DESCRIPTIO

■

Operates with Inputs Above V

■

Rail-to-Rail Input and Output

■

Micropower: 300µA Supply Current Max

■

Small SOT-23 Package

■

Gain Bandwidth product: 1.25MHz

■

Slew Rate: 0.42V/µs

■

Low Input Offset Voltage: 800µV Max

■

Single Supply Input Range: 0V to 18V

■

High Output Current: 18mA Min

■

Specified on 3V, 5V and ±5V Supplies

■

Output Shutdown on 6-Lead Version

■

Reverse Battery Protection to 18V

■

High Voltage Gain: 1500V/mV

■

Operating Temperature Range: –40°C to 85°C

+

U

APPLICATIO S

■

Portable Instrumentation

■

Battery- or Solar-Powered Systems

■

Sensor Conditioning

■

Supply Current Sensing

■

Battery Monitoring

■

MUX Amplifiers

■

4mA to 20mA Transmitters

The LT®1783 is a 1.25MHz op amp available in the small
SOT-23 package that operates on all single and split
supplies with a total voltage of 2.5V to 18V. The amplifier

draws less than 300µA of quiescent current and has

reverse battery protection, drawing negligible current for
reverse supply voltages up to 18V.

The input range of the LT1783 includes ground, and a
unique feature of this device is its Over-The-TopTM opera­tion capabilitity with either or both of its inputs above the
positive rail. The inputs handle 18V both differential and
common mode, independent of supply voltage. The input
stage incorporates phase reversal protection to prevent
false outputs from occurring even when the inputs are 9V
below the negative supply.

The LT1783 can drive loads up to 18mA and still maintain
rail-to-rail capability. A shutdown feature on the 6-lead
version can disable the part, making the output high

impedance and reducing quiescent current to 5µA. The

LT1783 op amp is available in the 5- and 6-lead
SOT-23 packages. For applications requiring lower power,
refer to the LT1782.

, LTC and LT are registered trademarks of Linear Technology Corporation.

Over-The-Top is a trademark of Linear Technology Corporation.

TYPICAL APPLICATIO

Positive Supply Rail Current Sense

+

V

5V TO 18V

LOAD

200Ω

0.2Ω

200Ω

I

LOAD

+

LT1783

–

U

Distribution of Input Offset Voltage

5V

2N3904

V
0V TO 4.3V

2k

OUT

1783 TA01

= 2Ω(I

LOAD

)

1

LT1783

WW

W

ABSOLUTE MAXIMUM RATINGS

Total Supply Voltage (V+ to V–) .............................. 18V

Input Differential Voltage ........................................ 18V

Input Pin Voltage to V–............................... +24V/– 10V

Shutdown Pin Voltage Above V–............................ 18V

Shutdown Pin Current ....................................... ±10mA

U

(Note 1)

Operating Temperature Range (Note 10) –40°C to 85°C

Specified Temperature Range ......................

Junction Temperature........................................... 150°C

Storage Temperature Range ................ –65°C to 150°C

Lead Temperature (Soldering, 10 sec)................. 300°C

Output Short-Circuit Duration (Note 2) ........... Indefinite

U

W

U

PACKAGE/ORDER INFORMATION

TOP VIEW

+

1

OUT

–

2

V

+IN

T

JMAX

Consult factory for Industrial and Military grade parts.

+

3

S5 PACKAGE

5-LEAD PLASTIC SOT-23

= 150°C, θJA = 250°C/ W

5

V

–

–IN

4

ORDER PART

LT1783CS5

S5 PART MARKING S6 PART MARKING

NUMBER

LTLF

OUT

+IN

TOP VIEW

1

–

2

V

6-LEAD PLASTIC SOT-23

T

JMAX

+

3

–

S6 PACKAGE

= 150°C, θJA = 230°C/ W

+

ORDER PART

V

6

SHDN

5

–IN

4

NUMBER

LT1783CS6

ELECTRICAL CHARACTERISTICS

The ● denotes specifications which apply over the specified temperature range, otherwise specifications are TA = 25°C.
VS = 3V, 0V; VS = 5V, 0V, VCM = V

= half supply, for the 6-lead part V

OUT

= 0V, pulse power tested unless otherwise specified.

PIN5

0°C to 70°C

LTIU

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

V

OS

I

OS

I

B

e

n

i

n

R

IN

C

IN

CMRR Common Mode Rejection Ratio VCM = 0V to VCC – 1V ● 90 100 dB

PSRR Power Supply Rejection Ratio VS = 3V to 12.5V, VCM = VO = 1V ● 90 100 dB

A

VOL

Input Offset Voltage T

Input Offset Voltage Drift (Note 7) 0°C ≤ TA ≤ 70°C ● 25µV/°C
Input Offset Current ● 48 nA

Input Bias Current ● 45 80 nA

Input Bias Current Drift 0°C ≤ TA ≤ 70°C ● 0.06 nA/°C
Input Noise Voltage 0.1Hz to 10Hz 0.6 µV
Input Noise Voltage Density f = 1kHz 20 nV/√Hz
Input Noise Current Density f = 1kHz 0.14 pA/√Hz
Input Resistance Differential 0.65 1.3 MΩ

Input Capacitance 5pF
Input Voltage Range ● 018V

(Note 3) V

Large-Signal Voltage Gain VS = 3V, VO = 500mV to 2.5V, RL = 10k 200 1500 V/mV

= 25°C 400 800 µV

A

≤ 70°C ● 950 µV

0°C ≤ T

A

= 18V (Note 3) ● 7 µA

V

CM

V

= 18V (Note 3) ● 35 60 µA

CM

SHDN or V

Common Mode, V
Common Mode, V

CM

V

= 3V, 0°C ≤ TA ≤ 70°C ● 133 V/mV

S

VS = 5V, VO = 500mV to 4.5V, RL = 10k 400 1500 V/mV
V

= 5V, 0°C ≤ TA ≤ 70°C ● 250 V/mV

S

= 0V, VCM = 0V to 18V 0.1 nA

S

P-P

= 0V to (V

CM

= 0V to 18V 0.3 0.5 MΩ

CM

= 0V to 18V (Note 6) ● 68 80 dB

– 1V) 1 GΩ

CC

2

LT1783

ELECTRICAL CHARACTERISTICS

The ● denotes specifications which apply over the specified temperature range, otherwise specifications are TA = 25°C.
VS = 3V, 0V; VS = 5V, 0V, VCM = V

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

V

OL

V

OH

I

SC

I

S

I

SHDN

V

L

V

H

t

ON

t

OFF

GBW Gain Bandwidth Product f = 5kHz 750 1250 kHz

SR Slew Rate AV = –1, R

FPBW Full-Power Bandwidth (Note 9) V

t

S

THD Distortion VS = 3V, VO = 2V

Output Voltage Swing LOW No Load ● 38 mV

Output Voltage Swing HIGH VS = 3V, No Load ● 2.91 2.94 V

Short-Circuit Current (Note 2) VS = 3V, Short to GND 5 10 mA

Minimum Supply Voltage ● 2.5 2.7 V

Reverse Supply Voltage I

Supply Current 210 300 µA

(Note 4)

Supply Current, SHDN V

Shutdown Pin Current V

Shutdown Output Leakage Current V

Maximum Shutdown Pin Current V
Shutdown Pin Input Low Voltage (Note 8) ● 0.3 V
Shutdown Pin Input High Voltage (Note 8) ● 2V

Turn-On Time V

Turn-Off Time V

(Note 3) 0°C ≤ T

(Note 5) 0°C ≤ T

Settling Time V

= half supply, for the 6-lead part V

OUT

= 5mA ● 200 400 mV

I

SINK

V

= 5V, I

S

= 3V, I

V

S

= 10mA ● 330 600 mV

SINK

= 5mA ● 2.6 2.8 V

SOURCE

VS = 5V, No Load ● 4.91 4.94 V

= 5V, I

V

S

V

= 3V, Short to V

S

= 10mA ● 4.5 4.74 V

SOURCE

CC

VS = 5V, Short to GND 15 30 mA
V

= 5V, Short to V

S

= –100µA ● 18 V

S

= 2V, No Load (Note 8) ● 518 µA

PIN5

= 0.3V, No load (Note 8) ● 0.5 nA

PIN5

= 2V, No Load (Note 8) ● 28 µA

V

PIN5

= 5V, No Load (Note 8) 5 µA

V

PIN5

= 2V, No Load (Note 8) ● 0.05 1 µA

PIN5

= 18V, No Load (Note 8) ● 10 30 µA

PIN5

= 5V to 0V, R

PIN5

= 0V to 5V, R

PIN5

≤ 70°C ● 600 kHz

A

≤ 70°C ● 0.21 V/µs

A

= 2V

OUT

P-P

= 5V, ∆V

S

CC

= 10k (Note 8) 25 µs

L

= 10k (Note 8) 3 µs

L

= ∞ 0.24 0.42 V/µs

L

= 2V to 0.1%, A

OUT

, AV = 1, RL = 10k, f = 1kHz 0.001 %

P-P

= 0V, pulse power tested unless otherwise specified.

PIN5

15 30 mA

20 40 mA

● 350 µA

66 kHz

= –1 12 µs

V

V

= ±5V, V

S

V

OS

I

OS

I

B

e

n

i

n

= 0V,V

CM

= 0V, for the 6-lead part V

OUT

Input Offset Voltage T

SHDN

= 25°C 500 900 µV

A

0°C ≤ T

≤ 70°C ● 1050 µV

A

= V

–

Input Offset Voltage Drift (Note 7) 0°C ≤ TA ≤ 70°C ● 25µV/°C
Input Offset Current ● 48 nA
Input Bias Current ● 40 80 nA
Input Bias Current Drift 0°C ≤ TA ≤ 70°C ● 0.06 nA/°C
Input Noise Voltage 0.1Hz to 10Hz 1 µV

P-P

Input Noise Voltage Density f = 1kHz 20 nV/√Hz
Input Noise Current Density f = 1kHz 0.14 pA/√Hz

3

LT1783

ELECTRICAL CHARACTERISTICS

The ● denotes specifications which apply over the specified temperature range, otherwise specifications are TA = 25°C.
V

= ±5V, V

S

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

R

IN

C

IN

CMRR Common Mode Rejection Ratio VCM = –5V to 13V ● 68 80 dB

A

VOL

V

OL

V

OH

I

SC

PSRR Power Supply Rejection Ratio V

I

S

I

SHDN

V

L

V

H

t

ON

t

OFF

GBW Gain Bandwidth Product f = 5kHz 800 1300 kHz

SR Slew Rate AV = –1, R

FPBW Full-Power Bandwidth (Note 9) V

t

S

Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.

Note 2: A heat sink may be required to keep the junction temperature
below absolute maximum.

Note 3: V

= ±5V or VS = ±9V tests.

V

S

Note 4: VS = 3V limits are guaranteed by correlation to VS = 5V and

= ±5V or VS = ±9V tests.

V

S

Note 5: Guaranteed by correlation to slew rate at V

= 3V and V

V

S

= 0V,V

CM

= 0V, for the 6-lead part V

OUT

= V–, unless otherwise specified.

SHDN

Input Resistance Differential ● 0.65 1.3 MΩ

Common Mode, V

= –5V to 13V ● 0.3 0.5 MΩ

CM

Input Capacitance 5pF
Input Voltage Range ● –5 13 V

Large-Signal Voltage Gain V

= ±4V, R

O

0°C ≤ T

= 10k 70 160 V/mV

L

≤ 70°C ● 50 V/mV

A

Output Voltage Swing LOW No Load ● –4.997 –4.992 V

= 5mA ● –4.8 –4.6 V

I

SINK

= 10mA ● –4.67 –4.4 V

I

SINK

Output Voltage Swing HIGH No Load ● 4.91 4.94 V

I

= 5mA ● 4.6 4.8 V

SOURCE

= 10mA ● 4.5 4.74 V

I

SOURCE

Short-Circuit Current (Note 2) Short to GND 18 30 mA

≤ 70°C ● 15 mA

0°C ≤ T

A

= ±1.5V to ±9V ● 90 100 dB

S

Supply Current 230 325 µA

● 375 µA

Supply Current, SHDN V

Shutdown Pin Current V

Maximum Shutdown Pin Current V

Shutdown Output Leakage Current V

Shutdown Pin Input Low Voltage V

Shutdown Pin Input High Voltage V

Turn-On Time V

Turn-Off Time V

Settling Time ∆V

= –3V, V

PIN5

= –4.7V, V

PIN5

V

= –3V, V

PIN5

= 9V, V

PIN5

= –7V, V

PIN5

= ±5V (Note 8) ● –4.7 V

S

= ±5V (Note 8) ● –2.8 V

S

= 0V to –5V, R

PIN5

= –5V to 0V, R

PIN5

0°C ≤ T

0°C ≤ T

= 8V

OUT

= 4V to 0.1%, A

OUT

= ±5V, No Load (Note 8) ● 620 µA

S

= ±5V, No load (Note 8) ● 0.5 nA

S

= ±5V, No Load (Note 8) ● 28 µA

S

= ±9V (Note 8) ● 10 30 µA

S

= ±9V, No Load (Note 8) ● 0.05 1 µA

S

= 10k (Note 8) ● 25 µs

L

= 10k (Note 8) ● 3 µs

L

≤ 70°C ● 700 kHz

A

= ∞, VO = ±4V, Measured at VO = ±2V 0.26 0.45 V/µs

L

≤ 70°C ● 0.23 V/µs

A

P-P

= 1 10 µs

V

18 kHz

Note 6: This specification implies a typical input offset voltage of 1.8mV at

= 18V and a maximum input offset voltage of 7.2mV at VCM = 18V.

V

CM

Note 7: This parameter is not 100% tested.
Note 8: Specifications apply to 6-lead SOT-23 with shutdown.

= 5V limits are guaranteed by correlation to VS = 3V and

S

Note 9: Full-power bandwidth is calculated from the slew rate.

FPBW = SR/2πV

.

P

Note 10: The LT1783 is guaranteed functional over the operating

temperature range –40°C to 85°C.

= ±5V, and GBW at

= ±5V tests.

S

S

4