AD7840 Analog Devices, AD7840 Datasheet - Page 3

• Manufacturer Part Number: AD7840
• Description: Complete 14-Bit CMOS DAC
• Manufacturer: Analog Devices

Specifications of AD7840

• Resolution (bits): 14bit
• Dac Update Rate: 400kSPS
• Dac Settling Time: 2.5µs
• Max Pos Supply (v): +5.25V
• Single-supply: No
• Dac Type: Voltage Out
• Dac Input Format: Par,Ser

REV. B
TIMING CHARACTERISTICS
Parameter
t
t
t
t
t
t
t
t
t
t
t
NOTES
1
2
3
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS*
V
V
AGND to DGND . . . . . . . . . . . . . . . . –0.3 V to V
V
REF OUT to AGND . . . . . . . . . . . . . . . . . . . . . . . 0 V to V
REF IN to AGND . . . . . . . . . . . . . . . . –0.3 V to V
Digital Inputs to DGND . . . . . . . . . . . –0.3 V to V
Operating Temperature Range
Storage Temperature Range . . . . . . . . . . . . –65 C to +150 C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +300 C
Power Dissipation (Any Package) to +75 C . . . . . . . . 450 mW
Derates above +75 C by . . . . . . . . . . . . . . . . . . . . 10 mW/ C
*Stresses above those listed under “Absolute Maximum Ratings” may cause
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 AD7840 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.
Timing specifications in bold print are 100% production tested. All other times are sample tested at +25 C to ensure compliance. All input signals are specified with
See Figures 6 and 8.
SCLK mark/space ratio is 40/60 to 60/40.
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.
1
2
3
4
5
6
7
8
9
10
11
tr = tf = 5 ns (10% to 90% of 5 V) and timed from a voltage level of 1.6 V.
3
DD
SS
OUT
Commercial (J, K Versions) . . . . . . . . . . . . . . 0 C to +70 C
Industrial (A, B Versions) . . . . . . . . . . . . . . –25 C to +85 C
Extended (S Version) . . . . . . . . . . . . . . . . –55 C to +125 C
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –7 V
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . V
Limit at T
(J, K, A, B Versions)
0
0
45
21
10
40
50
150
30
75
75
MIN
, T
MAX
1, 2
(V
DD
= +5 V
200
DD
DD
DD
Limit at T
(S Version)
0
0
50
28
15
40
50
40
100
100
SS
+ 0.3 V
+ 0.3 V
+ 0.3 V
to V
5%, V
DD
DD
MIN
SS
–3–
= –5 V
, T
Model
AD7840JN
AD7840KN
AD7840JP
AD7840KP
AD7840AQ
AD7840ARS
AD7840BQ
AD7840SQ
NOTES
1
2
3
To order MIL-STD-883, Class B processed parts, add /883B to part number.
Contact your local sales office for military data sheet and availability.
N = Plastic DIP; P = Plastic Leaded Chip Carrier; Q = Cerdip.
This grade will be available to /883B processing only.
MAX
1
5%, AGND = DGND = 0 V.)
3
ns min
Temperature
Range
0 C to +70 C
0 C to +70 C
0 C to +70 C
0 C to +70 C
–25 C to +85 C
–25 C to +85 C
–25 C to +85 C
–55 C to +125 C 78 min
Units
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ORDERING GUIDE
Conditions/Comments
CS to WR Setup Time
CS to WR Hold Time
WR Pulse Width
Data Valid to WR Setup Time
Data Valid to WR Hold Time
LDAC Pulse Width
SYNC to SCLK Falling Edge
SCLK Cycle Time
Data Valid to SCLK Setup Time
Data Valid to SCLK Hold Time
SYNC to SCLK Hold Time
SNR
(dB)
78 min
80 min
78 min
80 min
78 min
78 min
80 min
WARNING!
Integral
Nonlinearity
(LSB)
2 max
1 max
2 max
1 max
2 max
2 max
1 max
2 max
ESD SENSITIVE DEVICE
AD7840
Package
Option
N-24
N-24
P-28A
P-28A
Q-24
RS-24
Q-24
Q-2
4
2