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LT1784IS6

2.5MHz, Over-The-Top Low Power, Rail-to-Rail Input and Output Op Amp in SOT-23

Linear Technology 

LT1784

TYPICAL PERFORMANCE CHARACTERISTICS

Capacitive Load Handling

Overshoot vs Capacitive Load

70

VS = 5V, 0V

60 VCM = 2.5V

AV = 1

50

40

AV = 5

30

20

10

AV = 10

0

10

100

1000

CAPACITIVE LOAD (pF)

1784 G22

Undistorted Output Swing

vs Frequency

12

VS = ±5V

10

DISTORTION ≤ 1%

AV = 1

8

Total Harmonic Distortion + Noise

vs Frequency

0.1

RL = 10k

VS = 3V, 0V

VOUT = 1.8VP-P

VCM = 1V

0.01

6 VS = ±2.5V

4

0.001

AV = –1

AV = 1

2

0

0.0001

1k

10k

100k

1M

10

100

1k

10k

100k

FREQUENCY (Hz)

FREQUENCY (Hz)

1784 G23

1784 G24

Total Harmonic Distortion + Noise

vs Load Resistance

1

AV = 1

VS = ±1.5V

VIN = ±1V

VS = 3V TOTAL

VIN = 2VP-P AT 1kHz

0.1

0.01

0.001

VS = 3V, 0V

VIN = 0.1V TO 2.1V

0.0001

100

1k

10k

100k

LOAD RESISTANCE TO GROUND (Ω)

1784 G25

Total Harmonic Distortion + Noise

vs Output Voltage Amplitude

10 FREQUENCY = 1kHz

VCM = HALF SUPPLY

1

AV = 1

VS = 3V, 0V

0.1 AV = –1

VS = 3V, 0V

RF = RG = 10k

0.01

AV = 1

VS = ±1.5V

AV = –1

VS = ±1.5V

RF = RG = 10k

0.001

0

1

2

3

OUTPUT VOLTAGE AMPLITUDE (VP-P)

1784 G26

Open-Loop Gain

RL = 2k

RL = 10k

RL = 50k

VS = ±5V

–6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6

OUTPUT VOLTAGE (V)

1784 G27

Supply Current

vs SHDN Pin Voltage

600

VS = 5V, 0V

550

TA = 125°C

500

450

TA = 25°C

400

TA = –55°C

350

300

250

200

150

100

50

0

0

0.5

1

1.5

2

2.5

SHUTDOWN PIN VOLTAGE (V)

1784 G28

Large Signal Response

2V/DIV

VS = ±5V

AV = 1

CL = 15pF

5μs/DIV

Small Signal Response

20mV/DIV

1784 G29

VS = ±5V

AV = 1

CL = 15pF

2μs/DIV

1784 G30

1784fa

8

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