AD7242(RevB) 查看數據表（PDF） - Analog Devices

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AD7242
(Rev.:RevB)

LC2MOS Dual, Complete, 12-Bit/14-Bit Serial DACs

Analog Devices 

AD7242

Parameter

AD7244

J, A Versions1 S Version1

Units

Test Conditions/Comments

DC ACCURACY

Resolution

14

14

Integral Nonlinearity

±2

±2

Differential Nonlinearity

±1

±1

Bipolar Zero Error

± 10

± 10

Positive Full-Scale Error2

± 10

± 10

Negative Full-Scale Error2

± 10

± 10

Bits

LSB max

LSB max

LSB max

LSB max

LSB max

Guaranteed Monotonic

REFERENCE OUTPUT3

REF OUT @ +25°C

2.99/3.01

2.99/3.01

V min/V max

TMIN to TMAX

2.98/3.02

2.98/3.02

V min/V max

REF OUT Tempco

35

35

ppm/°C typ

Reference Load Change

(ΔREF OUT vs. ΔI)

–1

–1

mV max

Reference Load Current Change (0 μA–500 μA)

REFERENCE INPUTS

REF INA, REF INB Input Range

Input Current

E LOGIC INPUTS

(LDACA, LDACB, TFSA, TFSB,

TCLKA, TCLKB, DTA, DTB)

T Input High Voltage, VINH

Input Low Voltage, VINL

Input Current, IIN

Input Capacitance, CIN4

E ANALOG OUTPUTS

(VOUTA, VOUTB)

Output Voltage Range

DC Output Impedance

L Short Circuit Current

2.85/3.15

1

2.4

0.8

± 10

10

±3

0.1

20

2.85/3.15

1

2.4

0.8

± 10

10

±3

0.1

20

V min/V max 3 V ± 5%

μA max

V min

V max

μA max

pF max

V nom

Ω typ

mA typ

VDD = 5 V ± 5%

VDD = 5 V ± 5%

VIN = 0 V to VDD

AC CHARACTERISTICS4

Voltage Output Settling Time

Positive Full-Scale Change

4

4

O Negative Full-Scale Change

4

4

Digital-to-Analog Glitch Impulse 10

10

Digital Feedthrough

2

2

Channel-to-Channel Isolation

110

110

S POWER REQUIREMENTS

VDD

+5

+5

VSS

–5

–5

IDD

27

28

B ISS

15

15

Total Power Dissipation

195

205

μs max

μs max

nV secs typ

nV secs typ

dB typ

Settling Time to Within ± 1/2 LSB of Final Value

Typically 2.5 μs

Typically 2.5 μs

DAC Code Change All 1s to All 0s

VOUT = 10 kHz Sine Wave

V nom

V nom

mA max

mA max

mW max

± 5% for Specified Performance

± 5% for Specified Performance

Cumulative Current from the Two VDD Pins

Cumulative Current from the Two VSS Pins

Typically 130 mW

NOTES

1Temperature ranges are as follows: J Version: 0°C to +70°C; A Version: –40°C to +85°C; S Version: –55°C to +125°C.

O 2Measured with respect to REF IN and includes bipolar offset error.

3For capacitive loads greater than 50 pF, a series resistor is required (see Internal Reference section).

4Sample tested @ +25°C to ensure compliance.

Specifications subject to change without notice.

AD7244 ORDERING GUIDE

Model1

Temperature

Range

Integral

Nonlinearity

Package

Option2

AD7244JN

AD7244JR

AD7244AQ

AD7244SQ3

–40°C to +85°C

–40°C to +85°C

–40°C to +85°C

–55°C to +125°C

± 2 LSB max

± 2 LSB max

± 2 LSB max

± 2 LSB max

N-24

R-28

Q-24

Q-24

NOTES

1To order MIL-STD-883, Class B, processed parts, add /883B to part number.

Contact local sales office for military data sheet and availability.

2N = Plastic DIP; Q = Cerdip; R = Small Outline IC (SOIC).

3This grade will be available to /883B processing only.

REV. B

–3–

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