LTC1867IGN datasheet(4/16 Pages) LINER

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LTC1863/LTC1867

18637f

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VDD

Supply Voltage

(Note 9)

4.75

5.25

IDD

Supply Current

fSAMPLE = 200ksps

1.3

1.8

NAP Mode

150

µA

SLEEP Mode

0.2

µA

PDISS

Power Dissipation

6.5

TI I G CHARACTERISTICS The q denotes the specifications which apply over the full operating temperature

range, otherwise specifications are at TA = 25°C. (Note 5)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

fSAMPLE

Maximum Sampling Frequency

200

kHz

tCONV

Conversion Time

3.5

µs

tACQ

Acquisition Time

1.5

1.1

µs

fSCK

SCK Frequency

MHz

CS/CONV High Time

Short CS/CONV Pulse Mode

100

SDO Valid After SCK

↓

CL = 25pF (Note 11)

SDO Valid Hold Time After SCK

↓

CL = 25pF

511

SDO Valid After CS/CONV

↓

CL = 25pF

SDI Setup Time Before SCK

↑

–6

SDI Hold Time After SCK

↑

SLEEP Mode Wake-Up Time

CREFCOMP = 10µF, CVREF = 2.2µF60

Bus Relinquish Time After CS/CONV

↑

CL = 25pF

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 GND (unless otherwise

noted).

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

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

of greater than 100mA without latchup.

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

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

greater than 100mA below GND without latchup. These pins are not

clamped to VDD.

Note 5: VDD = 5V, fSAMPLE = 200ksps at 25°C, tr = tf = 5ns and

VIN– = 2.5V for bipolar mode unless otherwise specified.

Note 6: Linearity, offset and gain error specifications apply for both

unipolar and bipolar modes. The INL and DNL are tested in bipolar mode.

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: Unipolar offset is the offset voltage measured from +1/2LSB

when the output code flickers between 0000 0000 0000 0000 and

0000 0000 0000 0001 for LTC1867 and between 0000 0000 0000 and

0000 0000 0001 for LTC1863. Bipolar offset is the offset voltage

measured from –1/2LSB when output code flickers between 0000 0000

0000 0000 and 1111 1111 1111 1111 for LTC1867, and between

0000 0000 0000 and 1111 1111 1111 for LTC1863.

Note 9: Recommended operating conditions. The input range of

±2.048V

for bipolar mode is measured with respect to VIN– = 2.5V.

Note 10: Guaranteed by design, not subject to test.

Note 11: t2 of 25ns maximum allows fSCK up to 20MHz for rising capture

with 50% duty cycle and fSCK up to 40MHz for falling capture (with 3ns

setup time for the receiving logic).

POWER REQUIRE E TS The q denotes the specifications which apply over the full operating temperature

range, otherwise specifications are at TA = 25°C. (Note 5)

LTC1863/LTC1867/LTC1867A

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