12-Bit DACs with 32-Channel

Sample-and-Hold Outputs

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3

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DYNAMIC CHARACTERISTICS

Sample-and-Hold Settling

(Note 4)

0.08

%

SCLK Feedthrough

0.5

0.5

Hold Step

0.25

1mV

Droop Rate

1

300

µV/ms

Output Noise

250

REFERENCE INPUT

Input Resistance

7k

Ω

Reference Input Voltage

2.5

V

GROUND-SENSE INPUT

Input Voltage Range

-0.5

+0.5

V

Input Bias Current

-0.5V

-60

0

µA

GS Gain

(Note 6)

0.998

1

1.002

V/V

DIGITAL-INTERFACE DC CHARACTERISTICS

Input High Voltage

2.0

V

Input Low Voltage

0.8

V

Input Current

±1µA

TIMING CHARACTERISTICS (Figure 2)

Sequencer Clock Frequency

Internal oscillator

80

100

120

kHz

External Clock Frequency

(Note 7)

480

kHz

SCLK Frequency

20

MHz

SCLK Pulse-Width High

15

ns

SCLK Pulse-Width Low

15

ns

CS-Low to SCLK-High Setup

Time

15

ns

CS-High to SCLK-High Setup

Time

15

ns

SCLK-High to CS-Low Hold Time

10

ns