LTC1592B Просмотр технического описания (PDF) - Linear Technology

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LTC1592B

12-/14-/16-Bit SoftSpan DACs with Programmable Output Range

Linear Technology 

LTC1588/LTC1589/LTC1592

TYPICAL PERFOR A CE CHARACTERISTICS (LTC1592)

Integral Nonlinearity

vs Reference Voltage

in Bipolar Mode

1.0

0.8

0.6

0.4

0.2

0

– 0.2

– 0.4

– 0.6

– 0.8

– 1.0

–10 – 8 – 6 – 4 – 2 0 2 4 6 8 10

REFERENCE VOLTAGE (V)

1588992 G06

Differential Nonlinearity

vs Reference Voltage

in Bipolar Mode

1.0

0.8

0.6

0.4

0.2

0

– 0.2

– 0.4

– 0.6

– 0.8

– 1.0

–10 – 8 – 6 – 4 – 2 0 2 4 6

REFERENCE VOLTAGE (V)

8 10

1588992 G08

Differential Nonlinearity

vs Reference Voltage

in Unipolar Mode

1.0

0.8

0.6

0.4

0.2

0

– 0.2

– 0.4

– 0.6

– 0.8

– 1.0

–10 – 8 – 6 – 4 – 2 0 2 4 6 8 10

REFERENCE VOLTAGE (V)

1588992 G07

Full-Scale Settling Waveform

LD PULSE

5V/DIV

GATED

SETTLING

WAVEFORM

500µV/DIV

500ns/DIV

USING LT1468 OP AMP

CFEEDBACK = 20pF

0V TO 10V STEP

1592 G04

PI FU CTIO S

RCOM (Pin 1): Center Tap Point of the Two Bipolar Resis-

tors R1 and R2. Normally tied to the inverting input of an

external amplifier. When these resistors are not used,

connect this pin to ground. The absolute maximum volt-

age range on this pin is – 0.3V to 12V.

R1 (Pin 2): Bipolar Resistor R1. The main reference input

VREF, typically 5V. Accepts up to ±15V. Normally tied to

ROFS (Pin 3) and the reference input voltage VREF (5V).

When not used connect this pin to ground.

6

ROFS (Pin 3): Bipolar Offset Network. This pin provides the

offset of the output voltage range for bipolar modes.

Accepts up to ±15V. Normally tied to R1 and the reference

input voltage VREF (5V). Alternatively, this pin may be

driven from a different voltage than VREF.

RFB (Pin 4): Feedback Network. Normally tied to the output

of the current to voltage converter op amp. Range limited

to ±15V.

1588992fa

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