2

®

SHC298/298A

SPECIFICATIONS

ELECTRICAL

otherwise noted.

T Same as specifications for SHC298AM, JP, JU.

NOTES: (1) These parameters guaranteed over a supply voltage range of

±5V to = ±18V. (2) Charge offset is sensitive to stray capacitive coupling between input

logic signals and the hold capacitor. 1pF, for instance, will create an additional 0.5mV step with a 5V logic swing and a 0.01

µF hold capacitor. Magnitude of the

charge offset is inversely proportional to hold capacitor value.

SHC298AM, JP, JU

SHC298AJP

PARAMETER

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

ANALOG INPUT

Resistance

T

Ω

10

50

T

25

nA

DIGITAL INPUT

Pin 7

Pin 8

Circuit State

Mode Control Truth Table

0V

+2.4V

Sample (Track)

0V

+0.8V

Hold

+2.4V

+2.8V

Hold

+0.8V

+2.8V

Sample (Track)

Mode Control and Mode Control Reference Input Current

10

µA

Differential Logic Threshold

0.8

1.4

2.4

V

TRANSFER CHARACTERISTICS

ACCURACY (+25

Gain

+1

T

V/V

Gain Error

±0.004

±0.010

±0.001

±0.005

%

±2

±7

±1

±2mV

±30

T

µV/ms

Power Supply Rejection

±25

±100

TT

µV/V

ACCURACY DRIFT

Gain Drift

3

4

1

2

ppm/

°C

Input Offset Drift

15

70

T

25

µV/°C

T

mV/ms

DYNAMIC CHARACTERISTICS

Aperture Time : Negative Input Step

200

T

ns

Positive Input Step

150

T

ns

Acquisition Time (C = 1000pF): to

±0.1%, 10V Step

5

4

6

µs

Sample/Hold Transient: Peak Amplitude

160

T

mV

Settling to 1mV

1

T

µs

Feedthrough (Response to 10V Input Step)

±0.007

±0.004

% of 20V

OUTPUT

ANALOG OUTPUT

Voltage Range

±11.5

T

V

Current Range

±2

T

mA

Impedance (in Hold Mode)

0.5

4

TT

Ω

POWER SUPPLY

Rate Voltage

15

T

VDC

Range

±5

±18

TT

VDC

±4.5

±6.5

TT

mA