AD7294 Просмотр технического описания (PDF) - Analog Devices
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AD7294 Datasheet PDF : 45 Pages
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Preliminary Technical Data
AD7294
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
ACCURACY
Resolution
12
Relative Accuracy (INL)
±4
Differential Nonlinearity (DNL)
±1
Zero-Scale Error
4
Full-Scale Error
TBD
Offset Error
±4
Offset Error TC
±5
Gain Error
±0.024
Gain Temperature Coefficient
2
DC Crosstalk
0.5
DAC OUTPUT CHARACTERISTICS
Output Voltage Range
0
5
Output Voltage Span
0
15
Output Voltage Settling Time
TBD
Slew Rate
TBD
Output Noise Spectral Density
TBD
Short-Circuit Current
40
Load Current
±10
Capacitive Load Stability
RL = ∞
1000
DC Output Impedance
0.5
Power Supply Sensitivity
∆Vout/∆ΑVDD
–85
OFFSET INPUT
Input Range
0
5
DC Input Impedance
75
REFERENCE
Reference Output Voltage
2.49
2.51
Reference Input Voltage Range
0.1
2.5
DC Leakage Current
±30
Input Capacitance
20
VREF Output Impedance
25
Reference Temperature Coefficient
25
Unit
Test Conditions / Comments
Bits
LSB
LSB
Guaranteed monotonic
mV
mV
µV/°C
% FSR
ppm FSR/°C
LSB
Measured in the linear region
V
With a 2.5 V internal reference
V
The 5 V o/p voltage range can be
positioned on the span by the offset
mA
mA
pF
Ω
dB
V
V
kΩ
V
V
µA
pF
Ω
ppm/°C
FS current shorted to ground
Source/Sink within 200 mV of supply
VOUT = 3 VOFFSET − 2VREF + VDAC
10 ppm/°C typ
1 Guaranteed by design and characterization; not subject to production testing.
Rev. PrB | Page 3 of 45
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