LTC2302CDDXPBF datasheet(5/20 Pages) LINER

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LTC2302/LTC2306

23026f

TIMING CHARACTERISTICS The l denotes the speciﬁcations which apply over the full operating temperature

range, otherwise speciﬁcations are at TA = 25°C. (Note 4)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

fSMPL(MAX)

Maximum Sampling Frequency

500

kHz

fSCK

Shift Clock Frequency

MHz

tWHCONV

CONVST High Time

(Note 9)

tHD

Hold Time SDI After SCK

↑

2.5

tSUDI

Setup Time SDI Stable Before SCK

↑

0ns

tWHCLK

SCK High Time

fSCK = fSCK(MAX)

tWLCLK

SCK Low Time

fSCK = fSCK(MAX)

tWLCONVST

CONVST Low Time During Data Transfer

(Note 9)

410

tHCONVST

Hold Time CONVST Low After Last SCK

↓ (Note 9)

tCONV

Conversion Time

1.3

1.6

μs

tACQ

Acquisition Time

7th SCK

↑ to CONVST↑ (Note 9)

240

tdDO

SDO Data Valid After SCK

↓

CL = 25pF (Note 9)

10.8

12.5

thDO

SDO Hold Time SCK

↓

CL = 25pF

4ns

ten

SDO Valid After CONVST

↓

CL = 25pF

tdis

Bus Relinquish Time

CL = 25pF

SDO Rise Time

CL = 25pF

SDO Fall Time

CL = 25pF

tCYC

Total Cycle Time

2μs

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

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

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. These products can handle input

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

Note 4: VDD = 5V, OVDD = 5V, VREF = 4.096V, fSMPL = 500ksps, unless

otherwise speciﬁed.

Note 5: Linearity, offset and full-scale speciﬁcations apply for a single-

ended analog input with respect to GND for the LTC2306 and IN+ with

respect to IN– tied to GND for the LTC2302.

Note 6: 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 7: Bipolar zero error is the offset voltage measured from –0.5LSB

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

1111. Unipolar zero error is the offset voltage measured from +0.5LSB

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

0001.

Note 8: Full-scale bipolar error is the worst-case of –FS or +FS untrimmed

deviation from ideal ﬁrst and last code transitions and includes the effect

of offset error. Unipolar full-scale error is the deviation of the last code

transition from ideal and includes the effect of offset error.

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

Note 10: All speciﬁcations in dB are referred to a full-scale ±2.048V input

with a 4.096V reference voltage.

Note 11: Full linear bandwidth is deﬁned as the full-scale input frequency

at which the SINAD degrades to 60dB or 10 bits of accuracy.

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