AD7294 datasheet(3/45 Pages) AD

номер детали	AD7294

подробное описание детали	12-Bit, Multichannel, DAC/ADC Temperature Sensor and Current Sense for Monitor and Control Applications

PDF	45 Pages

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производитель	AD [Analog Devices]

домашняя страница	http://www.analog.com

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3 / 45 page

Preliminary Technical Data

AD7294

Rev. PrB | Page 3 of 45

SPECIFICATIONS

DAC SPECIFICATIONS1

AVDD = DVDD 4.5 V to 5.5 V, AGND = DGND= 0 V, external 2.5 V reference. Temperature range for B version: −40°C to +105°C. All

specifications TMIN to TMAX, unless otherwise noted. Offset pin is open, so range is from 0 to 5V.

Table 1.

Parameter

Min

Typ

Max

Unit

Test Conditions / Comments

ACCURACY

Resolution

Bits

Relative Accuracy (INL)

±4

LSB

Differential Nonlinearity (DNL)

±1

LSB

Guaranteed monotonic

Zero-Scale Error

Full-Scale Error

TBD

Offset Error

±4

Measured in the linear region

Offset Error TC

±5

µV/°C

Gain Error

±0.024

% FSR

Gain Temperature Coefficient

ppm FSR/°C

DC Crosstalk

0.5

LSB

DAC OUTPUT CHARACTERISTICS

Output Voltage Range

With a 2.5 V internal reference

Output Voltage Span

The 5 V o/p voltage range can be

positioned on the span by the offset

Output Voltage Settling Time

TBD

Slew Rate

TBD

Output Noise Spectral Density

TBD

Short-Circuit Current

FS current shorted to ground

Load Current

±10

Source/Sink within 200 mV of supply

Capacitive Load Stability

RL = ∞

1000

DC Output Impedance

0.5

Ω

Power Supply Sensitivity

∆Vout/∆ΑVDD

–85

OFFSET INPUT

Input Range

VOUT = 3 VOFFSET − 2VREF + VDAC

DC Input Impedance

kΩ

REFERENCE

Reference Output Voltage

2.49

2.51

Reference Input Voltage Range

0.1

2.5

DC Leakage Current

±30

µA

Input Capacitance

VREF Output Impedance

Ω

Reference Temperature Coefficient

ppm/°C

10 ppm/°C typ

1 Guaranteed by design and characterization; not subject to production testing.

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