AD7237A Datasheet, PDF (3/12 Pages) Analog Devices – LC2MOS Dual 12-Bit DACPORTs

AD7237A/AD7247A
TIMING CHARACTERISTICS1, 2 (VDD = +12 V to +15 V,3 VSS = 0 V or –12 V to –15 V,3 AGND = DGND = 0 V [AD7237A],
GND = 0 V [AD7247A])
Parameter
Limit at T_MIN, T_MAX
(A, B Versions)
Limit at T_MIN, T_MAX
(T Version)
Units
Conditions/Comments
t₁
0
t₂
0
t₃
80
t₄
80
t₅₄
10
t₆
0
t₇
0
t₈₅
80
0
ns min
CS to WR Setup Time
0
ns min
CS to WR Hold Time
100
ns min
WR Pulse Width
80
ns min
Data Valid to WR Setup Time
10
ns min
Data Valid to WR Hold Time
0
ns min
Address to WR Setup Time
0
ns min
Address to WR Hold Time
100
ns min
LDAC Pulse Width
NOTES
1_{Sample tested at +25°C to ensure compliance. 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.}
2_{See Figures 5 and 7.}
3_{Power Supply tolerance is ± 10% for A version and ± 5% for B and T versions.}
4_{If 0 ns < t2 < 10 ns, add t2 to t5. If t2 ≥ 10 ns, add 10 ns to t5.}
5_{AD7237A only.}
ABSOLUTE MAXIMUM RATINGS¹
(T_A = +25°C unless otherwise noted)
V_DD to GND (AD7247A) . . . . . . . . . . . . . . . . –0.3 V to +17 V
V_DD to AGND, DGND (AD7237A) . . . . . . . . –0.3 V to +17 V
V_DD to V_SS . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +34 V
AGND to DGND (AD7237A) . . . . . . . . . –0.3 V, V_DD +0.3 V
V_OUTA,² V_OUTB2 to AGND (GND) . . V_SS –0.3 V to V_DD +0.3 V
REF OUT to AGND (GND) . . . . . . . . . . . . . . . . . 0 V to V_DD
REF IN to AGND (GND) . . . . . . . . . . –0.3 V to V_DD +0.3 V
Digital Inputs to DGND (GND) . . . . . . –0.3 V to V_DD +0.3 V
Operating Temperature Range
Industrial (A, B Versions) . . . . . . . . . . . . . –40°C to +85°C
Extended (T Version) . . . . . . . . . . . . . . . –55°C to +125°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . . +300°C
Power Dissipation (Any Package) to +75°C . . . . . . . 1000 mW
Derates above +75°C by . . . . . . . . . . . . . . . . . . . . . 10 mW/°C
NOTES
1_{Stresses above those listed under “Absolute Maximum Ratings” may cause}
permanent damage to the device. This is a stress rating only and 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.
2_{Short-circuit current is typically 80 mA. The outputs may be shorted to voltages}
in this range provided the power dissipation of the package is not exceeded.
Model¹
AD7237AAN
AD7237ABN
AD7237AAR
AD7237ABR
AD7237ATQ
ORDERING GUIDE
Temperature
Range
Relative
Accuracy
(LSB)
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–55°C to +125°C
± 1 max
± 1/2 max
± 1 max
± 1/2 max
± 1/2 max
Package
Option²
N-24
N-24
R-24
R-24
Q-24
AD7247AAN
AD7247ABN
AD7247AAR
AD7247ABR
AD7247ATQ
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–55°C to +125°C
± 1 max
± 1/2 max
± 1 max
± 1/2 max
± 1/2 max
N-24
N-24
R-24
R-24
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 (SOIC).}
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 AD7237A/AD7247A 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
REV. 0
–3–