AD568K Ver la hoja de datos (PDF) - Analog Devices

Número de pieza

componentes Descripción

Lista de partido

AD568K

12-Bit Ultrahigh Speed Monolithic D/A Converter

Analog Devices 

AD568

LSB

MSB

12 11 10 9

8

76

54

3

2

1

THRESHOLD 13

CONTROL

THRESHOLD

COMMON 14

LADDER 17

COMMON

PNP

CURRENT

SOURCES

PNP

SWITCHES

1.4V

BAND-

GAP

REF

AD568

THIN-FILM R-2R LADDER

(100 - 200Ω)

DIFFUSED R-2R LADDER

(10 - 20Ω)

2X 4X

BURIED

ZENER

REFERENCE

24 VCC

IOUT

IOUT

BIPOLAR

CURRENT

GENERATOR

18

22

ANALOG

VEE

COMMON

REFERENCE

23 COMMON

200Ω

20 IOUT

19 LOAD RESISTOR

(RL)

21 BIPOLAR

OFFSET (IBPO)

15 10V SPAN

1kΩ RESISTOR

16 10V SPAN

RESISTOR

PIN CONFIGURATION

Figure 1. Functional Block Diagram

ABSOLUTE MAXIMUM RATINGS1

VCC to REFCOM . . . . . . . . . . . . . . . . . . . . . . . . 0 V to +18 V

VEE to REFCOM . . . . . . . . . . . . . . . . . . . . . . . . . 0 V to –18 V

REFCOM to LCOM . . . . . . . . . . . . . . . . . +100 mV to –10 V

ACOM to LCOM . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 100 mV

THCOM to LCOM . . . . . . . . . . . . . . . . . . . . . . . . . . ± 500 mV

SPANs to LCOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 12 V

IBPO to LCOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 5 V

IOUT to LCOM . . . . . . . . . . . . . . . . . . . . . . . . . . . –5 V to VTH

Digital Inputs to THCOM . . . . . . . . . . . . . –500 mV to +7.0 V

Voltage Across Span Resistor . . . . . . . . . . . . . . . . . . . . . . 12 V

VTH to THCOM . . . . . . . . . . . . . . . . . . . . . . –0.7 V to +1.4 V

Logic Threshold Control Input Current . . . . . . . . . . . . . 5 mA

Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mW

Storage Temperature Range

Q (Cerdip) Package . . . . . . . . . . . . . . . . . –65°C to +150°C

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 175°C

Thermal Resistance

θJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75°C/W

θJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25°C/W

1Stresses above those listed under “Absolute Maximum Ratings” may cause

permanent damage to the device. This is a stress rating only and functional

operation of the device at these or any other conditions above those indicated in the

operational section of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

Modell

ORDERING GUIDE

Package Option2

Temperature

Range ؇C

Linearity

Error Max

@ 25؇C

Voltage

Gain T.C.

Max ppm/؇C

AD568JQ

24-Lead Cerdip (Q-24) 0 to +70

± 1/2

± 50

AD568KQ

24-Lead Cerdip (Q-24) 0 to +70

± 1/4

± 30

AD568SQ

24-Lead Cerdip (Q-24) –55 to +125

± 1/2

± 50

NOTES

1For details on grade and package offerings screened in accordance with MIL-STD-883, refer to the Analog Devices

Military Products Databook or current AD568/883B data sheet.

2Q = Cerdip.

Definitions

LINEARITY ERROR (also called INTEGRAL NONLINEAR-

ITY OR INL): Analog Devices defines linearity error as the

maximum deviation of the actual analog output from the ideal

output (a straight line drawn from 0 to FS) for any bit combina-

tion expressed in multiples of 1 LSB. The AD568 is laser

trimmed to 1/4 LSB (0.006% of FS) maximum linearity error at

+25°C for the K version and 1/2 LSB for the J and S versions.

DIFFERENTIAL LINEARITY ERROR (also called DIFFER-

ENTIAL NONLINEARITY or DNL): DNL is the measure of

the variation in analog value, normalized to full scale, associated

with a 1 LSB change in digital input code. Monotonic behavior

requires that the differential linearity error not exceed 1 LSB in

the negative direction.

MONOTONICITY: A DAC is said to be monotonic if the out-

put either increases or remains constant as the digital input

increases.

UNIPOLAR OFFSET ERROR: The deviation of the analog

output from the ideal (0 V or 0 mA) when the inputs are set to

all 0s is called unipolar offset error.

BIPOLAR OFFSET ERROR: The deviation of the analog out-

put from the ideal (negative half-scale) when the inputs are set

to all 0s is called bipolar offset error.

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily

accumulate on the human body and test equipment and can discharge without detection.

Although the AD568 features proprietary ESD protection circuitry, permanent damage may

occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD

precautions are recommended to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE

REV. A

–3–

Share Link: