LTC2612 查看數據表（PDF） - Linear Technology

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LTC2612

Dual 16-/14-/12-Bit Rail-to-Rail DACs in 8-Lead MSOP

Linear Technology 

LTC2602/LTC2612/LTC2622

WU

TI I G CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature

range, otherwise specifications are at TA = 25°C. (See Figure 1) (Note 6)

SYMBOL PARAMETER

CONDITIONS

LTC2602/LTC2612/LTC2622

MIN

TYP

MAX UNITS

VCC = 2.5V to 5.5V

t1

SDI Valid to SCK Setup

●4

ns

t2

SDI Valid to SCK Hold

●4

ns

t3

SCK High Time

●9

ns

t4

SCK Low Time

t5

CS/LD Pulse Width

●9

ns

● 10

ns

t6

LSB SCK High to CS/LD High

●7

ns

t7

CS/LD Low to SCK High

●7

ns

t10

CS/LD High to SCK Positive Edge

●7

ns

SCK Frequency

50% Duty Cycle

●

50

MHz

Note 1: Absolute maximum ratings are those values beyond which the life

of a device may be impaired.

Note 2: Linearity and monotonicity are defined from code kL to code

2N – 1, where N is the resolution and kL is given by kL = 0.016(2N/VREF),

rounded to the nearest whole code. For VREF = 4.096V and N = 16, kL =

256 and linearity is defined from code 256 to code 65,535.

Note 3: Digital inputs at 0V or VCC.

Note 4: DC crosstalk is measured with VCC = 5V and VREF = 4.096V, with

the measured DAC at midscale, unless otherwise noted.

Note 5: RL = 2kΩ to GND or VCC at the output of the DAC not being tested.

Note 6: Guaranteed by design and not production tested.

Note 7: Inferred from measurement at code 256 (LTC2602), code 64

(LTC2612) or code 16 (LTC2622), and at fullscale.

Note 8: VCC = 5V, VREF = 4.096V. DAC is stepped 1/4 scale to 3/4 scale

and 3/4 scate to 1/4 scale. Load is 2k in parallel with 200pF to GND.

Note 9: VCC = 5V, VREF = 4.096V. DAC is stepped ±LBS between half scale

and half scale –1. Load is 2k in parallel with 200pF to GND.

TYPICAL PERFOR A CE CHARACTERISTICS

(LTC2602)

Integral Nonlinearity (INL)

32

VCC = 5V

24 VREF = 4.096V

16

8

0

–8

–16

–24

–32

0

16384

32768

CODE

49152 65535

2602 G20

Differential Nonlinearity (DNL)

1.0

VCC = 5V

0.8 VREF = 4.096V

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

0

16384

32768

CODE

49152

65535

2602 G21

INL vs Temperature

32

24

VCC = 5V

VREF = 4.096V

16

8

INL (POS)

0

–8

INL (NEG)

–16

–24

–32

–50 –30 –10 10 30 50

TEMPERATURE (°C)

70 90

2602 G22

2602fa

4

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