3

LTC1590

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Analog Outputs

Output Capacitance (Note 3)

DAC Register Loaded to All 1s

q

60

90

pF

DAC Register Loaded to All 0s

q

30

60

pF

Digital Input

Digital Input High Voltage

q

2.4

V

Digital Input Low Voltage

q

0.8

V

Digital Input Current

q

0.001

±1

µA

Digital Input Capacitance

q

8pF

Digital Output

Digital Output High Voltage

q

4V

Digital Output Low Voltage

q

0.4

V

Timing Characteristics

q

50

ns

q

0ns

CLK High Time

q

40

ns

CLK Low Time

q

40

ns

CS/LD High Time

q

50

ns

LSB CLK to CS/LD

q

40

ns

CS/LD Low to CLK High

q

20

ns

CLK Low to CS/LD Low

q

20

ns

q

10

160

ns

Power Supply

Operating Supply Range

q

4.5

5

5.5

V

Supply Current

q

10

µA

Note 8: Glitch on DAC A or DAC B output when the other DAC makes a

full-scale transition.

K = Boltzmann constant (J/K

°); R = resistance (Ω); T = resistor temperature

(

°K); B = bandwidth (Hz).

LT

using LT1358 op amp.

Note 12: –3dB bandwidth using LT1358 op amp.

temperature range.

Note 1:

±0.5LSB = ±0.012% of full scale.

Note 2: Using internal feedback resistor.

Note 3: Guaranteed by design, not subject to test.

Note 5: OUT1 load = 100

Ω in parallel with 13pF.

all 1s to all 0s.

loaded with all 1s.