LTC1456 Просмотр технического описания (PDF) - Linear Technology

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LTC1456

12-Bit Rail-to-Rail Micropower DAC with Clear Input

Linear Technology 

LTC1456

TYPICAL PERFORMANCE CHARACTERISTICS

Differential Nonlinearity (DNL)

0.5

0.4

0.3

0.2

0.1

0

– 0.1

– 0.2

– 0.3

– 0.4

– 0.5

0 512 1024 1536 2048 2560 3072 3584 4095

CODE

1456 G01

Minimum Output Voltage

vs Output Sink Current

700

125°C

600

500

25°C

400

300

– 55°C

200

100

0

0 2 4 6 8 10 12 14 16 18 20

OUTPUT SINK CURRENT (mA)

1456 G04

Output Swing vs Load Resistance

4.5

CODE: ALL 1s

4.0

3.5

3.0

2.5

2.0

1.5

1.0

RL

0.5

0

10

100

1k

10k

LOAD RESISTANCE (Ω)

1456 G07

Integral Nonlinearity (INL)

2.0

1.6

1.2

0.8

0.4

0

– 0.4

– 0.8

–1.2

–1.6

– 2.0

0 512 1024 1536 2048 2560 3072 3584 4095

CODE

1456 G02

Supply Current

vs Logic Input Voltage

1.750

1.615

1.480

ALL DIGITAL INPUTS

TIED TOGETHER

1.345

1.210

1.075

0.940

0.805

0.670

0.535

0.400

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

LOGIC INPUT VOLTAGE (V)

1456 G05

Offset Voltage vs Temperature

0.9

0.8

0.7

0.6

0.5

0.4

0.3

– 55 – 25 5

35 65

TEMPERATURE (°C)

95 125

1456 G08

Minimum Supply Headroom for

Full Output Swing vs Load Current

1.4

∆VOUT < 1LSB

1.2

CODE: ALL 1s

VOUT = 4.095V

1.0

0.8

0.6

0.4

0.2

0

0

5

10 15 20 25 30

LOAD CURRENT (mA)

1456 G03

Output Swing vs Load Resistance

4.5

CODE: ALL 0s

4.0

3.5

VCC

3.0

RL

2.5

2.0

1.5

1.0

0.5

0

10

100

1k

10k

LOAD RESISTANCE (Ω)

1456 G06

Supply Current vs Temperature

550

540

530

520

510

500

VCC = 5.5V

490

480

VCC = 5V

470

460

VCC = 4.5V

450

– 55 – 25 5

35 65 95 125

TEMPERATURE (°C)

1456 G09

4

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