AD7226 Просмотр технического описания (PDF) - Analog Devices

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AD7226

LC2MOS Quad 8-Bit D/A Converter

Analog Devices 

AD7226

SINGLE SUPPLY (VDD = 15 V ؎ 5%, VSS = AGND = DGND = O V; VREF = 10 V1 unless otherwise noted.

All specifications TMIN to TMAX unless otherwise noted.)

Parameter

K, B Versions2

Unit

Conditions/Comments

STATIC PERFORMANCE

Resolution

8

Total Unadjusted Error

±2

Differential Nonlinearity

±1

REFERENCE INPUT

Input Resistance

2

Input Capacitance3

50

200

Bits

LSB max

LSB max

kW min

pF min

pF max

Guaranteed Monotonic

Occurs when each DAC is loaded with all 0s.

Occurs when each DAC is loaded with all 1s.

DIGITAL INPUTS

Input High Voltage, VINH

Input Low Voltage, VINL

Input Leakage Current

Input Capacitance

Input Coding

2.4

0.8

±1

8

Binary

V min

V max

mA max

pF max

VIN = 0 V or VDD

DYNAMIC PERFORMANCE

Voltage Output Slew Rate4

Voltage Output Settling Time4

Digital Crosstalk

Minimum Load Resistance

POWER SUPPLIES

VDD Range

IDD

NOTES

1Maximum possible reference voltage.

2Temperature ranges are as follows:

K Version: –40∞C to +85∞C

B Version: –40∞C to +85∞C

3Guaranteed by design. Not production tested.

4Sample Tested at 25∞C to ensure compliance.

Specifications subject to change without notice.

2

4

10

2

14.25/15.75

13

V/ms min

ms max

nV secs typ

kW min

Settling Time to ± 1/2 LSB

VOUT = +10 V

V min/V max For Specified Performance

mA max

Outputs Unloaded; VIN = VINL or VINH

ABSOLUTE MAXIMUM RATINGS1

VDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +17 V

VDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +17 V

VSS to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –7 V, VDD

VSS to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –7 V, VDD

VDD to VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +24 V

AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD

Digital Input Voltage to DGND . . . . . . . –0.3 V, VDD + 0.3 V

VREF to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD

VOUT to AGND2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . VSS, VDD

Power Dissipation (Any Package) to 75∞C . . . . . . . . . . 500 mW

Derates above 75∞C by . . . . . . . . . . . . . . . . . . . . . 2.0 mW/∞C

Operating Temperature

Commercial (K Version) . . . . . . . . . . . . . . . –40∞C to +85∞C

Industrial (B Version) . . . . . . . . . . . . . . . . . –40∞C to +85∞C

Storage Temperature . . . . . . . . . . . . . . . . . . . –65∞C to +150∞C

Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . . . 300∞C

NOTES

1Stresses above those listed under Absolute Maximum Ratings may cause perma-

nent damage to the device. This is a stress rating only, functional operation of the

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

sections of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

2Outputs may be shorted to AGND provided that the power dissipation of the

package is not exceeded. Typically short circuit current to AGND is 50 mA.

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

AD7226 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.

REV. D

–3–

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