AD7249(2000) 查看數據表（PDF） - Analog Devices
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AD7249 Datasheet PDF : 12 Pages
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AD7249–SPECIFICATIONS (VDD = +12 V to +15 V,1 VSS = O V or –12 V to –15 V,1 AGND = DGND = O V, REFIN =
+5 V, RL = 2 k⍀, CL = 100 pF to AGND. All specifications TMIN to TMAX unless otherwise noted.)
Parameter
A Version2 B Version2 S Version2 Unit
Test Conditions/Comments
STATIC PERFORMANCE
Resolution
12
Relative Accuracy3
±1
Differential Nonlinearity3
± 0.9
Unipolar Offset Error3
±5
Bipolar Zero Error3
±6
Full-Scale Error3, 4
±6
Full-Scale Temperature Coefficient ± 5
12
12
Bits
± 1/2
±1
LSB max
± 0.9
± 0.9
LSB max
Guaranteed Monotonic
±5
±6
LSB max
VSS = 0 V or –12 V to –15 V1; DAC
Latch Contents All 0s
±5
±7
LSB max
VSS = –12 V to –15 V1
DAC Latch Contents All 0s
±6
±7
LSB max
±5
±5
ppm of FSR/°C typ
REFERENCE OUTPUT
REFOUT
Reference Temperature Coefficient
Reference Load Change
(∆VREFOUT vs. IL)
4.95/5.05
± 25
–1
4.95/5.05
± 25
–1
4.95/5.05
± 30
–1
V min/V max
ppm/°C typ
mV max
Reference Load Current (IL)
Change (0 µA–100 µA)
REFERENCE INPUT
Reference Input Range, REFIN
Input Current
4.95/5.05
5
4.95/5.05
5
4.95/5.05
5
V min/V max
µA max
5 V ± 1%
DIGITAL INPUTS
Input High Voltage, VINH
2.4
2.4
2.4
V min
Input Low Voltage, VINL
0.8
0.8
0.8
V max
Input Current
IIN
Input Capacitance5
±1
±1
±1
µA max
VIN = 0 V to VDD
8
8
8
pF max
ANALOG OUTPUTS
Output Range Resistor,
ROFSA & ROFSB
Output Voltage Ranges6
Output Voltage Ranges6
DC Output Impedance
15/30
+5, +10
+5, +10, ± 5
0.5
15/30
+5, +10
+5, +10, ± 5
0.5
15/30
+5, +10
+5, +10, ± 5
0.5
kΩ min/ max
V
V
Ω typ
Single Supply; VSS = 0 V
Dual Supply; VSS = –12 V or –15 V
AC CHARACTERISTICS5
Voltage Output Settling-Time
Positive Full-Scale Change
10
Negative Full-Scale Change
10
Digital-to-Analog Glitch Impulse3 30
Digital Feedthrough3
10
Digital Crosstalk3
10
Settling Time to Within
± 1/2 LSB of Final Value
10
10
µs max
Typically 3 µs
10
10
µs max
Typically 5 µs
30
30
nV secs typ
1 LSB Change Around
Major Carry
10
10
nV secs typ
10
10
nV secs typ
POWER REQUIREMENTS
VDD Range
+10.8/+16.5 +11.4/+15.75 +11.4/+15.75 V min/V max
VSS Range (Dual Supplies)
–10.8/–16.5 –11.4/–15.75 –11.4/–15.75 V min/V max
IDD
ISS (Dual Supplies)
15
15
15
5
5
5
NOTES
1Power supply tolerance, A Version: ± 10%; B, S Versions: ± 5%.
2Temperature ranges are as follows: A, B Versions: –40°C to +85°C; S Version: –55°C to +125°C.
3See Terminology.
4Measured with respect to REFIN and includes unipolar/bipolar offset error.
5Guaranteed by design not production tested.
60 V to 10 V output range available only with VDD ≥ 14.25 V.
Specifications subject to change without notice.
mA max
mA max
For Specified Performance Unless
Otherwise Stated
For Specified Performance Unless
Otherwise Stated
Output Unloaded; Typically 11 mA
Output Unloaded; Typically 3 mA
–2–
REV. C
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