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AD7249 Datasheet(PDF) 3 Page - Analog Devices

Part No. AD7249
Description  LC2MOS Dual 12-Bit Serial DACPORT
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD7249 Datasheet(HTML) 3 Page - Analog Devices

 
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AD7249
REV. C
–3–
TIMING CHARACTERISTICS1, 2
Limit at TMIN to TMAX
Parameter
(All Versions)
Unit
Conditions/Comments
t1
4
200
ns min
SCLK Cycle Time
t2
15
ns min
SYNC to SCLK Falling Edge Setup Time
t3
50
ns min
SYNC to SCLK Hold Time
t4
0
ns min
Data Setup Time
t5
150
ns min
Data Hold Time
t6
0
ns min
SYNC High to LDAC Low
t7
20
ns min
LDAC Pulsewidth
t8
0
ns min
LDAC High to SYNC Low
t9
50
ns min
CLR Pulsewidth
t10
20
ns min
SYNC High Time
NOTES
1Timing specifications guaranteed by design not production tested. All input signals are specified with tr = tf = 5 ns (10% to 90% of 5 V) and timed from a voltage
level of 1.6 V.
2See Figure 8.
3Power supply tolerance, A Version:
± 10%; B, S Versions: ± 5%.
4SCLK Mark/Space Ratio range is 45/55 to 55/45.
(VDD = +12 V to +15 V,
3 V
SS = 0 V or –12 V to –15 V,
3 AGND = DGND = 0 V, R
L = 2 k
,
CL = 100 pF. All specifications TMIN to TMAX unless otherwise noted.)
ABSOLUTE MAXIMUM RATINGS
1
(TA = +25
°C unless otherwise noted)
VDD to AGND, DGND . . . . . . . . . . . . . . . . . . –0.3 V to +17 V
VSS to AGND, DGND . . . . . . . . . . . . . . . . . . +0.3 V to –17 V
AGND to DGND . . . . . . . . . . . . . . . . . –0.3 V to VDD + 0.3 V
VOUTA, B
2 to AGND . . . . . . . . . . . . V
SS – 0.3 V to VDD + 0.3 V
REFOUT to AGND . . . . . . . . . . . . . . . . . . . . . . . . 0 V to VDD
REFIN to AGND . . . . . . . . . . . . . . . . . –0.3 V to VDD + 0.3 V
Digital Inputs to DGND . . . . . . . . . . . . –0.3 V to VDD + 0.3 V
Operating Temperature Range
Industrial (A, B Versions) . . . . . . . . . . . . . . –40
°C to +85°C
Extended (S Version) . . . . . . . . . . . . . . . . . –55
°C to +125°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . +150
°C
Storage Temperature Range . . . . . . . . . . . . . –65
°C to +150°C
Power Dissipation Plastic DIP . . . . . . . . . . . . . . . . . . . 600 mW
θJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . +117°C/W
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . +300
°C
Power Dissipation, Cerdip . . . . . . . . . . . . . . . . . . . . . . 600 mW
θJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 76°C/W
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . +300
°C
Power Dissipation, SOIC . . . . . . . . . . . . . . . . . . . . . . . 600 mW
θJA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . 75°C/W
Lead Temperature (Soldering)
Vapor Phase (60 secs) . . . . . . . . . . . . . . . . . . . . . . +215
°C
Infrared (15 secs) . . . . . . . . . . . . . . . . . . . . . . . . . +220
°C
NOTES
1Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability. Only one Absolute
Maximum Rating may be applied at any time.
2The outputs may be shorted to voltages in this range provided the power dissipation
of the package is not exceeded.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD7249 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE


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