HA-5340(2003) Просмотр технического описания (PDF) - Intersil

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производитель

HA-5340
(Rev.:2003)

700ns, Low Distortion, Precision Sample and Hold Amplifier

Intersil 

Test Circuits and Waveforms

HA-5340

1 -INPUT

2

+INPUT

8

OUTPUT

VO

S/H

CONTROL

INPUT

16 S/H CONTROL

HA-5340

12 NC

(CH = 135pF = INTERNAL)

FIGURE 1. HOLD STEP ERROR AND DROOP RATE

S/H CONTROL

VO

VP

NOTE:

6. Observe the “hold step” voltage VP.

HOLD (+4.0V)

SAMPLE (0V)

FIGURE 2. HOLD STEP ERROR

S/H CONTROL

HOLD (+4.0V)

SAMPLE (0V)

VO

∆VO

∆t

NOTES:

7. Observe the voltage “droop”, ∆VO/∆t.

8. Measure the slope of the output during hold, ∆VO/∆t.

9. Droop can be positive or negative - usually to one rail or the other

not to GND.

FIGURE 3. DROOP RATE TEST

V IN

20VP-P

200kHz

SINE WAVE

S/H CONTROL

INPUT

ANALOG

MUX OR

SWITCH

AIN

V+

V-

HA-5340

9

6

1 -IN

2 +IN

16 S/H

CONTROL

SUPPLY

GND

15

8

OUT

REF

COM

7

TO

SUPPLY

COMMON

TO

SIGNAL

GND

VOUT

NOTE:

10. Feedthrough in

dB = 20log -V----O----U----T- where:

VIN

VOUT = VP-P , Hold Mode,

VIN = VP-P

FIGURE 4. HOLD MODE FEEDTHROUGH ATTENUATION

5

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