Datasheet

AD7244
Parameter J, A Versions
1
S Version
1
Units Test Conditions/Comments
DC ACCURACY
Resolution 14 14 Bits
Integral Nonlinearity ±2 ±2 LSB max
Differential Nonlinearity ±1 ±1 LSB max Guaranteed Monotonic
Bipolar Zero Error ±10 ±10 LSB max
Positive Full-Scale Error
2
±10 ±10 LSB max
Negative Full-Scale Error
2
±10 ±10 LSB max
REFERENCE OUTPUT
3
REF OUT @ +25°C 2.99/3.01 2.99/3.01 V min/V max
T
MIN
to T
MAX
2.98/3.02 2.98/3.02 V min/V max
REF OUT Tempco 35 35 ppm/°C typ
Reference Load Change
(∆REF OUT vs. ∆I) –1 –1 mV max Reference Load Current Change (0 µA–500 µA)
REFERENCE INPUTS
REF INA, REF INB Input Range 2.85/3.15 2.85/3.15 V min/V max 3 V ± 5%
Input Current 1 1 µA max
LOGIC INPUTS
(
LDACA, LDACB, TFSA, TFSB,
TCLKA, TCLKB, DTA, DTB)
Input High Voltage, V
INH
2.4 2.4 V min V
DD
= 5 V ± 5%
Input Low Voltage, V
INL
0.8 0.8 V max V
DD
= 5 V ± 5%
Input Current, I
IN
±10 ±10 µA max V
IN
= 0 V to V
DD
Input Capacitance, C
IN
4
10 10 pF max
ANALOG OUTPUTS
(V
OUTA
, V
OUTB
)
Output Voltage Range ±3 ±3 V nom
DC Output Impedance 0.1 0.1 Ω typ
Short Circuit Current 20 20 mA typ
AC CHARACTERISTICS
4
Voltage Output Settling Time Settling Time to Within ±1/2 LSB of Final Value
Positive Full-Scale Change 4 4 µs max Typically 2.5 µs
Negative Full-Scale Change 4 4 µs max Typically 2.5 µs
Digital-to-Analog Glitch Impulse 10 10 nV secs typ DAC Code Change All 1s to All 0s
Digital Feedthrough 2 2 nV secs typ
Channel-to-Channel Isolation 110 110 dB typ V
OUT
= 10 kHz Sine Wave
POWER REQUIREMENTS
V
DD
+5 +5 V nom ±5% for Specified Performance
V
SS
–5 –5 V nom ±5% for Specified Performance
I
DD
27 28 mA max Cumulative Current from the Two V
DD
Pins
I
SS
15 15 mA max Cumulative Current from the Two V
SS
Pins
Total Power Dissipation 195 205 mW max Typically 130 mW
NOTES
1
Temperature ranges are as follows: J Version: 0°C to +70°C; A Version: –40°C to +85°C; S Version: –55°C to +125°C.
2
Measured with respect to REF IN and includes bipolar offset error.
3
For capacitive loads greater than 50 pF, a series resistor is required (see Internal Reference section).
4
Sample tested @ +25°C to ensure compliance.
Specifications subject to change without notice.
AD7242/AD7244
REV. A
–3–
AD7244 ORDERING GUIDE
Temperature Integral Package
Model
1
Range Nonlinearity Option
2
AD7244JN –40°C to +85°C ±2 LSB max N-24
AD7244JR –40°C to +85°C ±2 LSB max R-28
AD7244AQ –40°C to +85°C ±2 LSB max Q-24
AD7244SQ
3
–55°C to +125°C ±2 LSB max Q-24
NOTES
1
To order MIL-STD-883, Class B, processed parts, add /883B to part number.
Contact local sales office for military data sheet and availability.
2
N = Plastic DIP; Q = Cerdip; R = Small Outline IC (SOIC).
3
This grade will be available to /883B processing only.