4

LTC1402

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Maximum Sampling Frequency (Conversion Rate)

q

2.2

MHz

Minimum Sampling Period (Conversion + Acquisiton Period)

q

455

ns

Minimum Clock Period

q

28

10000

ns

Conversion Time Greater Than 13 Clocks + 6ns

(Note 9)

q

375

ns

Acquisition Time Greater Than 2 Clocks – 6ns

(Notes 9, 16)

q

51

ns

Minimum Positive or Negative SCK Pulse Width

(Note 9)

q

3.8

6

ns

CONV to SCK Setup Time

(Notes 9, 13)

q

7.3

12

ns

SCK After CONV

(Note 9)

q

0ns

Minimum Positive or Negative CONV Pulse Width

(Note 9)

q

3.5

5

ns

SCK to Sample Mode

(Notes 9, 14)

q

914

ns

CONV to Hold Mode

(Note 9)

q

3.4

5

ns

Minimum Delay Between Conversions

(Note 9)

q

48

ns

Minimum Delay from SCK to Valid Bits 0 Through 11

(Notes 9, 15)

q

912

ns

Minimum Delay from SCK to Valid REFREADY

(Notes 9, 15)

q

15

20

ns

(Notes 9, 15)

q

11.4

16

ns

(Notes 9, 15)

q

47

ns

REFREADY Bit Delay After Sleep-to-Wake Transition

(Notes 9, 17)

q

10

ms

(Notes 9, 17)

q

2ms

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Positive Supply Voltage

4.75

5.00

5.25

V

Negative Supply Voltage

– 5.25

– 5.00

0

V

Positive Supply Current

Active Mode

q

18

30

mA

Nap Mode

q

35

mA

Sleep Mode

2

10

µA

Negative Supply Current

Active, Sleep or Nap Modes with SCK Off

q

2

µA

PD

Power Dissipation

Active Mode with SCK in Fixed State (Hi or Lo)

90

150

mW

POWER REQUIRE E TS

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, AGND1

and AGND2 wired together.

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

internal diodes. This product can handle input currents greater than

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

bipolar mode with

±5V supplies.

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

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

deviation is measured from the center of quantization band.

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

flickers between 1000 0000 0000 and 0111 1111 1111.

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

Note 10: Recommended operating conditions.

Note 11: The analog input range is defined as the voltage difference

with a single 5V supply if the absolute voltages of the inputs remain within

the single 5V supply voltage.

TI I G CHARACTERISTICS