1654 Ver la hoja de datos (PDF) - Linear Technology

Número de pieza

componentes Descripción

Fabricante

1654

Dual 14-Bit Rail-to-Rail DAC in 16-Lead SSOP Package

Linear Technology 

LTC1654

ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. Unless otherwise noted, VCC = 2.7V to 5.5V, VOUT A, VOUT B unloaded,

REFHI A, REFHI B = 4.096V (VCC = 5V), REFHI A, REFHI B = 2.048V (VCC = 2.7V), REFLO = 0V, X1/X1/2 = 0V.

SYMBOL PARAMETER

Switching Characteristics (VCC = 2.7V to 5.5V)

t8

SDO Output Delay

t9

SCK Low to CS/LD Low

t10

CLR Pulse Width

CONDITIONS

CLOAD = 100pF

(Note 6)

(Note 6)

MIN TYP MAX

●

5

150

●

15

●

45

UNITS

ns

ns

ns

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: Nonlinearity is defined from low code kL to code 16383. See

Applications Information (page 11).

Note 3: Offset error is measured at low code kL. See Applications

Information (page 11).

Note 4: DAC switched between code 2 kL and code 16383. See

Applications Information (page 11) for definition of low code kL.

Note 5: Digital inputs at 0V or VCC.

Note 6: Guaranteed by design.

Note 7: CS/LD = 0, VOUT = 4.096V and data is being clocked in.

Note 8: 100pF load capacitor.

TYPICAL PERFOR A CE CHARACTERISTICS

Integral Nonlinearity (INL)

vs Input Code

2.0

1.5

1.0

0.5

0

–0.5

–1.0

–1.5

–2.0

0

8192

INPUT CODE

16383

1654 G01

Gain Error vs Temperature

5.0

2.5

0

–2.5

–5.0

–55 –25 5

35 65 95 125

TEMPERATURE (°C)

1654 G04

4

Differential Nonlinearity (DNL)

vs Input Code

2.0

1.5

1.0

0.5

0

–0.5

–1.0

–1.5

–2.0

0

8192

INPUT CODE

16383

1654 G02

Minimum Output Voltage

vs Load Current (Output Sinking)

1.0

CODE: ALL ZEROS

0.9

0.8

0.7

0.6

0.5

TA = 125°C

TA = 25°C

0.4

0.3

0.2

TA = –55°C

0.1

0

0

5

10

15

OUTPUT SINK CURRENT (mA)

1645 G05

Offset vs Temperature

2.50

1.25

0

–1.25

–2.50

–55 –25 5

35 65 95 125

TEMPERATURE (°C)

1654 G03

Minimum Supply Headroom vs

Load Current (Output Sourcing)

1.0

CODE: ALL 1s

0.9 VREFHI = 4.096V

0.8

0.7

TA = 125°C

TA = 25°C

0.6

0.5

0.4

TA = –55°C

0.3

0.2

0.1

0

0

5

10

15

LOAD CURRENT (mA)

1645 G06

1654fb

Share Link: