LTC2970CUFD datasheet(6/36 Pages) LINER

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LTC2970/LTC2970-1

29701fc

29701 TD

SDA

SCL

START

CONDITION

tBUF

tSU;STO

STOP

CONDITION

tHD;STA

tSU;DAT

tSU;STA

REPEATED START

CONDITION

tHIGH

tHD;DAT

tSP

tHD;STA

tLOW

START

CONDITION

The I2C Bus Speciﬁcation

Note 4: Integral nonlinearity (INL) is deﬁned as the deviation of a code

from a straight line passing through the actual endpoints (0V and 6V)

of the transfer curve. The deviation is measured from the center of the

quantization band.

Note 5: Nonlinearity is deﬁned from the ﬁrst code that is greater than or

equal to the maximum offset speciﬁcation to code 255 (full-scale).

Note 6: Maximum capacitive load, CB, for SCL and SDA is 400pF. Data and

clock risetime (tr) and falltime (tf) are: (20 + 0.1 • CB)(ns) < tr < 300ns and

(20 + 0.1 • CB)(ns) < tf < 300ns. CB = capacitance of one bus line in pF.

SCL and SDA external pull-up voltage, VIO, is 3V < VIO < 5.5V.

Note 7: This speciﬁcation is guaranteed by design.

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 currents into device pins are positive; all currents out of device

pins are negative. All voltages are referenced to ground unless otherwise

speciﬁed.

Note 3: TUE (%) is deﬁned as:

(•

)

•

Gain Error

INL

V LSB V

500

100

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

tSETUP_TRACK Tracking IDAC Disconnect Delay

LTC2970-1 Only: After the tracking

algorithm asserts CPIO_CFG high, the

LTC2970-1 will wait this amount of time

before starting to decrement Chn_a_

delay_track[9:0]. Used while tracking

power supplies off.

tDEC_TRACK

Tracking IDAC Decrement Rate

LTC2970-1 Only: The LTC2970-1 changes

Chn_a_delay_track[9:0] at this rate.

μs/LSB

The ● denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C.

ELECTRICAL CHARACTERISTICS

TIMING DIAGRAM

LTC2970CUFD Datasheet(PDF) 6 Page - Linear Technology

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