LF198FE datasheet(4/5 Pages) PHILIPS

4 / 5 page

Philips Semiconductors Linear Products

Product specification

LF198/LF298/LF398

Sample-and-hold amplifiers

August 31, 1994

882

TYPICAL DC PERFORMANCE CHARACTERISTICS

JUNCTION TEMPERATURE (

°C)

Input Bias Current

Output Short Circuit Current

Gain Error

Hold Step

Leakage Current Into

Hold Capacitor

Hold Step Input Voltage

100

0.1

0.01

–5

–10

–15

–50

–25

100

125 150

JUNCTION TEMPERATURE (

°C)

100pF

1000pF

0.01

µF

0.1

µF

HOLD CAPACITOR

V+ = V– = 15V

TJ = 25°C

100

10–1

10–2

–50

–25

100

125 150

–50

–25

100

125 150

JUNCTION TEMPERATURE (

°C)

VS = ±15V

VOUT = 0

HOLD MODE

SOURCING

SINKING

0.8

0.6

0.4

0.2

–0.2

–0.4

–0.6

–0.8

–1

–15

–10

–5

INPUT VOLTAGE (V)

1.8

1.6

1.4

1.2

0.8

0.6

0.4

0.2

–15

–10

–5

TJ = 25°C

TJ = 55°C

TJ = 100°C

TJ = 25°C

RL = 10k

SAMPLE MODE

TYPICAL AC PERFORMANCE CHARACTERISTICS

Acquisition Time

Aperture Time

Capacitor Hysteresis

100

1000

0.1%

0.01%

VIN = 0 TO ±10V

TJ = 25°C

HOLD CAPACITOR (

µF)

0.001

0.01

0.1

250

225

200

175

150

125

100

V+ = V– = 15V

∆VOUT ≤ 1mV

NEGATIVE

INPUT

STEP

∆VIN = 10V

POSITIVE

INPUT

STEP

–50

–25

100

125 150

JUNCTION TEMPERATURE (

°C)

100

0.1

100

0.1

SAMPLE TIME (ms)

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