LTC1282ACSW datasheet(4/24 Pages) LINER

4 / 24 page

LTC1282

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

fSAMPLE(MAX)

Maximum Sampling Frequency

Commercial (Note 13)

140

kHz

Military (Note 13)

120

kHz

tCONV

Conversion Time

Commercial

6.0

µs

Military

6.5

µs

CS to RD Setup Time

0ns

↓ to BUSY↓ Delay

CL = 50pF

140

200

Commercial

230

Military

260

Data Access Time After RD

↓

CL = 20pF (Note 13)

100

180

Commercial

200

Military

220

CL = 100pF (Note 13)

110

200

Commercial

240

Military

260

RD Pulse Width

(Note 13)

CS to RD Hold Time

(Note 13)

0ns

Data Setup Time After BUSY

↑

(Note 13)

Commercial

110

Military

120

Bus Relinquish Time

(Note 13)

120

Commercial

130

Military

150

HBEN to RD Setup Time

(Note 13)

0ns

HBEN to RD Hold Time

(Note 13)

0ns

t10

Delay Between RD Operations

t11

Delay Between Conversions

Commercial (Note 13)

1140

450

Military (Note 13)

1500

t12

Aperture Delay of Sample-and-Hold

TI I G CHARACTERISTICS (Note 5)

LTC1282A/LTC1282B

Note 8: Bipolar offset is the different voltage measured from – 0.5LSB

when the output code flickers between 0000 0000 0000 and 1111 1111

1111.

Note 9: Full-scale change when VSS = 0V (Unipolar Mode) or

– 3V (Bipolar Mode).

Note 10: Full-scale change when VDD = 3V.

Note 11: The LTC1282 can perform unipolar and bipolar conversions.

When VSS is grounded (i.e. – 0.1V ≤ VSS), the ADC will convert in unipolar

mode with input voltage of 0V to 2.5V. When VSS is taken negative (i.e. VSS

≤ –2.5V), the ADC will convert in bipolar mode with an input voltage of

±1.25V. AIN must not exceed VDD or fall below VSS by more than 50mV for

specified accuracy.

Note 12: Guaranteed by design, not subject to test.

Note 13: Recommended operating conditions.

Note 14: Commercial grade parts are designed to operate over the

temperature range of – 40

°C to 85°C but are neither tested nor guaranteed

beyond 0

°C to 70°C. Industrial grade parts specified and tested over

–40

°C to 85°C are available on special request. Consult factory.

The q indicates specifications which apply over the full operating

temperature range; all other limits and typicals TA = 25°C.

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: All voltage values are with respect to ground with DGND and

AGND wired together (unless otherwise noted).

Note 3: When these pin voltages are taken below VSS or above VDD, they

will be clamped by internal diodes. This product can handle input currents

greater than 60mA below VSS or above VDD without latchup.

Note 4: When these pin voltages are taken below VSS they will be clamped

by internal diodes. This product can handle input currents greater than

60mA below VSS without latchup. These pins are not clamped to VDD.

Note 5: VDD = 3V, VSS = 0V for unipolar mode and VSS = – 3V for bipolar

mode, fSAMPLE = 140kHz, tr = tf = 5ns unless otherwise specified.

Note 6: Linearity, offset and full-scale specifications apply for unipolar and

bipolar modes.

Note 7: Integral nonlinearity is defined as the deviation of a code from a

straight line passing through the actual endpoints of the transfer curve.

The deviation is measured from the center of the quantization band.

LTC1282ACSW Datasheet(PDF) 4 Page - Linear Technology

LTC1282ACSW Datasheet(HTML) 4 Page - Linear Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Datasheet Download

Link URL