Datasheet

–2–
AD7249–SPECIFICATIONS
(V
DD
= +12 V to +15 V,
1
V
SS
= O V or –12 V to –15 V,
1
AGND = DGND = O V, REFIN =
+5 V, R
L
= 2 k⍀, C
L
= 100 pF to AGND. All specifications T
MIN
to T
MAX
unless otherwise noted.)
Parameter A Version
2
B Version
2
S Version
2
Unit Test Conditions/Comments
STATIC PERFORMANCE
Resolution 12 12 12 Bits
Relative Accuracy
3
± 1 ± 1/2 ± 1 LSB max
Differential Nonlinearity
3
± 0.9 ± 0.9 ± 0.9 LSB max Guaranteed Monotonic
Unipolar Offset Error
3
± 5 ± 5 ± 6 LSB max V
SS
= 0 V or –12 V to –15 V
1
; DAC
Latch Contents All 0s
Bipolar Zero Error
3
± 6 ± 5 ± 7 LSB max V
SS
= –12 V to –15 V
1
DAC Latch Contents All 0s
Full-Scale Error
3, 4
± 6 ± 6 ± 7 LSB max
Full-Scale Temperature Coefficient ± 5 ± 5 ± 5 ppm of FSR/°C typ
REFERENCE OUTPUT
REFOUT 4.95/5.05 4.95/5.05 4.95/5.05 V min/V max
Reference Temperature Coefficient ± 25 ± 25 ± 30 ppm/°C typ
Reference Load Change
(∆V
REFOUT
vs. I
L
) –1 –1 –1 mV max Reference Load Current (I
L
)
Change (0 µA–100 µA)
REFERENCE INPUT
Reference Input Range, REFIN 4.95/5.05 4.95/5.05 4.95/5.05 V min/V max 5 V ± 1%
Input Current 5 5 5 µA max
DIGITAL INPUTS
Input High Voltage, V
INH
2.4 2.4 2.4 V min
Input Low Voltage, V
INL
0.8 0.8 0.8 V max
Input Current
I
IN
± 1 ± 1 ± 1 µA max V
IN
= 0 V to V
DD
Input Capacitance
5
8 8 8 pF max
ANALOG OUTPUTS
Output Range Resistor,
R
OFSA
& R
OFSB
15/30 15/30 15/30 kΩ min/ max
Output Voltage Ranges
6
+5, +10 +5, +10 +5, +10 V Single Supply; V
SS
= 0 V
Output Voltage Ranges
6
+5, +10, ± 5 +5, +10, ± 5 +5, +10, ± 5 V Dual Supply; V
SS
= –12 V or –15 V
DC Output Impedance 0.5 0.5 0.5 Ω typ
AC CHARACTERISTICS
5
Voltage Output Settling-Time Settling Time to Within
± 1/2 LSB of Final Value
Positive Full-Scale Change 10 10 10 µs max Typically 3 µs
Negative Full-Scale Change 10 10 10 µs max Typically 5 µs
Digital-to-Analog Glitch Impulse
3
30 30 30 nV secs typ 1 LSB Change Around
Major Carry
Digital Feedthrough
3
10 10 10 nV secs typ
Digital Crosstalk
3
10 10 10 nV secs typ
POWER REQUIREMENTS
V
DD
Range +10.8/+16.5 +11.4/+15.75 +11.4/+15.75 V min/V max For Specified Performance Unless
Otherwise Stated
V
SS
Range (Dual Supplies) –10.8/–16.5 –11.4/–15.75 –11.4/–15.75 V min/V max For Specified Performance Unless
Otherwise Stated
I
DD
15 15 15 mA max Output Unloaded; Typically 11 mA
I
SS
(Dual Supplies) 5 5 5 mA max Output Unloaded; Typically 3 mA
NOTES
1
Power supply tolerance, A Version: ± 10%; B, S Versions: ± 5%.
2
Temperature ranges are as follows: A, B Versions: –40°C to +85°C; S Version: –55°C to +125°C.
3
See Terminology.
4
Measured with respect to REFIN and includes unipolar/bipolar offset error.
5
Guaranteed by design not production tested.
6
0 V to 10 V output range available only with V
DD
≥ 14.25 V.
Specifications subject to change without notice.
REV. D