AD7841AS datasheet(2/12 Pages) AD

No. de pieza	AD7841AS

Descripción Electrónicos	Octal 14-Bit, Parallel Input, Voltage-Output DAC

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–2–

REV. 0

AD7841–SPECIFICATIONS

(VCC = +5 V

5%; VDD = +15 V

10%; VSS = –15 V

10%; GND = DUTGND =

0 V; RL = 5 k

and CL = 50 pF to GND, TA

1 = T

MIN to TMAX, unless otherwise noted)

Parameter

A

B

Units

Test Conditions/Comments

ACCURACY

Resolution

14

Bits

Relative Accuracy

± 4

± 2

LSB max

Differential Nonlinearity

–0.9/2

± 1

LSB max

Guaranteed Monotonic Over Temperature for All

Grades

Zero-Scale Error

± 8

LSB max

VREF(+) = +5 V, VREF(–) = –5 V. Typically within

±2 LSB

Full-Scale Error

± 8

LSB max

VREF(+) = +5 V, VREF(–) = –5 V. Typically within

±2 LSB

Gain Error

± 2

LSB typ

VREF(+) = +5 V, VREF(–) = –5 V

Gain Temperature Coefficient

2

0.5

ppm FSR/

°C typ

10

ppm FSR/

°C max

DC Crosstalk

2

120

µV max

See Terminology. Typically 75

µV

REFERENCE INPUTS

2

DC Input Impedance

100

M

Ω typ

Input Current

± 1

µA max

Per Input. Typically

±0.03 µA

VREF(+) Range

0/+5

V min/max

VREF(–) Range

–5/0

V min/max

[VREF(+) – VREF(–)]

+2/+10

V min/max

For Specified Performance. Can Go as Low as 0 V,

but Performance Not Guaranteed

DUTGND INPUTS

2

DC Input Impedance

60

k

Ω typ

Max Input Current

±0.3

mA typ

Per Input

Input Range

3

–2/+2

V min/max

OUTPUT CHARACTERISTICS

2

Output Voltage Swing

VSS + 2.5 V to

V typ

VOUT = 2 × (VREF(–) + [VREF(+) – VREF(–)] × D)

VDD – 2.5 V

– VDUTGND

Short Circuit Current

15

mA max

Resistive Load

5

k

Ω min

To 0 V

Capacitive Load

50

pF max

To 0 V

DC Output Impedance

0.5

Ω max

DIGITAL INPUTS

2

VINH, Input High Voltage

2.4

V min

VINL, Input Low Voltage

0.8

V max

IINH, Input Current

Total for All Pins

@ +25

°C

± 1

µA max

TMIN to TMAX

±10

µA max

CIN, Input Capacitance

10

pF max

POWER REQUIREMENTS

4

VCC

+4.75/+5.25

V min/max

For Specified Performance

VDD

+15 V

± 10%

+15 V

± 10%

V min/max

For Specified Performance

VSS

–15 V

± 10%

–15 V

± 10%

V min/max

For Specified Performance

Power Supply Sensitivity

2

∆Full Scale/∆V

DD

90

dB typ

∆Full Scale/∆V

SS

90

dB typ

ICC

0.5

mA max

VINH = VCC, VINL = GND. Dynamic Current

IDD

10

mA max

Outputs Unloaded. Typically 8 mA

ISS

10

mA max

Outputs Unloaded. Typically 8 mA

NOTES

1Temperature range for A and B Versions: –40

°C to +85°C.

2Guaranteed by characterization. Not production tested.

3

See DUTGND Voltage Range section.

4The AD7841 is functional with power supplies of

±12 V ±10% with reduced output range. Output amplifier requires 2.5 V of head room at the bottom and top ends

of the transfer for function. At 12 V supplies it is recommended to restrict the reference range to

± 4 V.

Specifications subject to change without notice.

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