4

LTC1293/LTC1294/LTC1296

129346fs

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

High Level Input Voltage

●

2.0

V

Low Level Input Voltage

●

0.8

V

High Level Input Current

●

2.5

µA

Low Level Input Current

●

–2.5

µA

High Level Output Voltage

4.7

V

●

2.4

4.0

Low Level Output Voltage

●

0.4

V

High Z Output Leakage

●

3

µA

●

–3

Output Source Current

–20

mA

Output Sink Current

20

mA

Positive Supply Current

CS High

●

612

mA

Positive Supply Current

CS High,

LTC1294BC, LTC1294CC,

●

510

µA

Power

LTC1294DC, LTC1294BI,

Shutdown

LTC1294CI, LTC1294DI,

CLK Off

LTC1294BM, LTC1294CM,

●

515

µA

LTC1294DM

Reference Current

CS High

●

10

50

µA

I

–

Negative Supply Current

CS High

●

150

µA

SSO Source Current

●

0.8

1.5

mA

SSO Sink Current

●

0.5

1.0

mA

ELECTRICAL C

C

HARA TER STICS

DIGITAL A D

I

DC

(Note 3)

LTC1293/4/6B

LTC1293/4/6C

LTC1293/4/6D

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 DGND, AGND and REF

together (unless otherwise noted).

–5V for bipolar mode, CLK = 1.0MHz unless otherwise specified. The

●

denotes specifications which apply over the full operating temperature

°C.

Note 4: These specs apply for both unipolar and bipolar modes. In bipolar

Note 5: Linearity error is specified between the actual end points of the A/

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

quantization band.

Note 6: Recommended operating conditions.

Note 7: Two on-chip diodes are tied to each reference and analog input

which will conduct for reference or analog input voltages one diode drop

below V

this input diode to conduct, especially at elevated temperatures, and cause

errors for inputs near full scale. This spec allows 50mV forward bias of

either diode. This means that as long as the reference or analog input

does not exceed the supply voltage by more than 50mV, the output code

will be correct. To achieve an absolute 0V to 5V input voltage range will

therefore require a minimum supply voltage of 4.950V over initial

tolerance, temperature variations and loading.

Note 8: Channel leakage current is measured after the channel selection.