LTC1415CSW datasheet(4/24 Pages) LINER

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LTC1415

(Note 5)

TI I G CHARACTERISTICS

The q denotes 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 ground or above VDD,

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

currents greater than 100mA below ground or above VDD without latchup.

Note 4: When these pin voltages are taken below ground, they will be

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

than 100mA below ground without latchup. These pins are not clamped

to VDD.

Note 5: VDD = 5V, fSAMPLE = 1.25MHz, tr = tf = 5ns unless otherwise

specified.

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

ended +AIN input with – AIN grounded.

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.

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

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

Note 9: Guaranteed by design, not subject to test.

Note 10: Recommended operating conditions.

Note 11: The falling edge of CONVST starts a conversion. If CONVST

returns high at a critical point during the conversion it can create small

errors. For best performance ensure that CONVST returns high either

within 425ns after the start of the conversion or after BUSY rises.

Note 12: CS = RD = CONVST = 0V.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

fSAMPLE(MAX)

Maximum Sampling Frequency

1.25

MHz

Conversion and Acquisition Time

800

tCONV

Conversion Time

700

tACQ

Acquisition Time

150

CS to RD Setup Time

(Notes 9, 10)

0ns

↓ to CONVST↓Setup Time

(Notes 9, 10)

NAP/SLP

↑to SHDN↓Setup Time

(Notes 9, 10)

200

SHDN

↑ to CONVST↓ Wake-Up Time Nap Mode (Note 10)

200

Sleep Mode, CREFCOMP = 10µF (Note 10)

CONVST Low Time

(Notes 10, 11)

CONVST to BUSY Delay

CL = 25pF

Data Ready Before BUSY

↑

Delay Between Conversions

(Note 10)

Wait Time RD

↓ After BUSY↑

–5

t10

Data Access Time After RD

↓

CL = 25pF

CL = 100pF

t11

Bus Relinquish Time

°C = TA = 70°C

–40

°C = TA = 85°C

t12

RD Low Time

t10

t13

CONVST High Time

t14

Aperture Delay of Sample-and-Hold

– 1.5

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