AD7845 Analog Devices, AD7845 Datasheet - Page 3

• Manufacturer Part Number: AD7845
• Description: Complete 12-Bit CMOS Multiplying DAC
• Manufacturer: Analog Devices

Specifications of AD7845

• Resolution (bits): 12bit
• Dac Update Rate: 200kSPS
• Dac Settling Time: 5µs
• Max Pos Supply (v): +15.75V
• Single-supply: No
• Dac Type: Voltage Out
• Dac Input Format: Par

REV. B
ABSOLUTE MAXIMUM RATINGS
(T
V
V
V
V
V
V
V
V
AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, V
Digital Input Voltage to DGND . . . . . –0.3 V to V
Power Dissipation (Any Package)
TIMING CHARACTERISTICS
Parameter
t
t
t
t
t
NOTES
1
Specifications subject to change without notice.
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 AD7845 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.
Model
AD7845JN
AD7845KN
AD7845JP
AD7845KP
AD7845JR
AD7845KR
AD7845AQ
AD7845BQ
AD7845AR
AD7845BR
AD7845SQ/883B
AD7845TQ/883B
AD7845SE/883B
NOTES
1
2
3
Guaranteed by design and characterization, not production tested.
CS
CH
WR
DS
DH
Analog Devices reserves the right to ship either ceramic (D-24A) or cerdip
(Q-24) hermetic packages.
To order MIL-STD-883, Class B processed parts, add /883B to part number.
E = Leadless Ceramic Chip Carrier; N = Plastic DIP; P = Plastic Leaded Chip
Carrier; Q = Cerdip; R = SOIC.
DD
SS
REF
RFB
RA
RB
RC
OUT
A
To +75 C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 650 mW
Derates above +75 C . . . . . . . . . . . . . . . . . . . . . 10 mW/ C
= +25 C unless otherwise stated)
to DGND . . . . . . . . . . . . . . . . . . . . . . . .+0.3 V to –17 V
to AGND . . . . . . . . . . . . . . . . . V
to AGND . . . . . . . . . . . . . . . . . V
to AGND . . . . . . . . . . . . . . . . . V
to DGND . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V to +17 V
to AGND . . . . . . . . . . . . . . . . V
to AGND . . . . . . . . . . . . . . . . V
to AGND
2
2
. . . . . . . . . . . . . . . V
Temperature
Range
0 C to +70 C
0 C to +70 C
0 C to +70 C
0 C to +70 C
0 C to +70 C
0 C to +70 C
–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
–55 C to +125 C
–55 C to +125 C
ORDERING GUIDE
Limit at T
(All Versions)
30
0
30
80
0
1
DD
DD
DD
DD
DD
DD
MIN
1
Relative
Accuracy
@ +25 C
(V
+ 0.3 V, V
+ 0.3 V, V
+ 0.3 V, V
+ 0.3 V, V
+ 0.3 V, V
+ 0.3 V, V
1
1 LSB
1/2 LSB
1 LSB
1/2 LSB
1 LSB
1/2 LSB
1 LSB
1/2 LSB
1 LSB
1/2 LSB
1 LSB
1/2 LSB
1 LSB
to T
DD
= +15 V,
MAX
DD
SS
SS
SS
SS
SS
SS
+ 0.3 V
Package
Option
N-24
N-24
P-28A
P-28A
R-24
R-24
Q-24
Q-24
R-24
R-24
Q-24
Q-24
E-28A
– 0.3 V
– 0.3 V
– 0.3 V
– 0.3 V
– 0.3 V
– 0.3 V
5%. V
DD
3
SS
–3–
= –15 V,
Operating Temperature Range
Storage Temperature Range . . . . . . . . . . . –65 C to +150 C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . +300 C
NOTES
1
2
Stresses above those listed under Absolute Maximum Ratings may cause
V
Units
ns min
ns min
ns min
ns min
ns min
permanent damage to the device. This is a stress rating only; functional
operation of the device at these or any other conditions above those indicated in
the operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods of time may affect device
reliability. Only one Absolute Maximum Rating may be applied at any one time.
package is not exceeded.
OUT
Commercial (J, K Versions) . . . . . . . . . . . . . 0 C to +70 C
Industrial (A, B Versions) . . . . . . . . . . . . –40 C to +85 C
Extended (S, T Versions) . . . . . . . . . . . . –55 C to +125 C
DATA
may be shorted to AGND provided that the power dissipation of the
CS
WR
5%. V
NOTES
1. ALL INPUT SIGNAL RISE AND FALL TIMES MEASURED FROM
2. TIMING MEASUREMENT REFERENCE LEVEL IS
10% TO 90% OF +5V. t
REF
Figure 1. AD7845 Timing Diagram
= +10 V. AGND = DGND = O V.)
R
t
= t
CS
F
Test Conditions/Comments
Chip Select to Write Setup Time
Chip Select to Write Hold Time
Write Pulsewidth
Data Setup Time
Data Hold Time
= 20ns.
WARNING!
t
WR
t
DS
ESD SENSITIVE DEVICE
t
DH
t
CH
V
IH
+ V
2
AD7845
IL
5V
0V
5V
0V
5V
0V