Datasheet

Parameter Min Typ Max Units
POWER SUPPLY
Positive Voltage Range 4.75 5 5.25 V
Negative Voltage Range –5.25 –5 –4.75 V
Positive Supply Current 30 40 mA
Negative Supply Current 63 73 mA
Nominal Power Dissipation 465 600 mW
Power Supply Rejection Ratio (PSRR) –0.2 +0.2 % of FSR/V
OPERATING RANGE –40 +85 °C
NOTES
1
Measured at IOUTA, driving a virtual ground.
2
Nominal FS output current is 4× the current at IREFIN. Therefore, nominal FS current is 20 mA when IREFIN = 5 mA.
3
Output current is defined as total current available for IREFIN and any external load.
4
Reference bandwidth is a function of external cap at NR pin. Refer to compensation section of data sheet for details.
5
Excludes internal reference drift.
6
Includes internal reference drift.
7
Measured as unbuffered voltage output (1 V range) with FS current into 50 Ω load at IOUTB.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS
*
Parameter with Respect to Min Max Units
Positive Supply Voltage (V
DD
) DCOM, REFCOM, LADCOM –0.5 +6.0 V
Negative Supply Voltage (V
EE
) DCOM, REFCOM, LADCOM –6.0 +0.5 V
Analog-to-Other Grounds (REFCOM) DCOM, LADCOM –0.5 +0.5 V
Digital-to-Other Grounds (DCOM) LADCOM, REFCOM –0.5 +0.5 V
Reference Output (REFOUT) REFCOM V
DD
+ 0.5 V
Reference Input Current (IREFIN) +7.5 mA
Digital Inputs (DB0–DB15, CLOCK) DCOM –0.5 V
DD
+ 0.5 V
Analog Outputs (IOUTA, IOUTB) LADCOM –2.0 +5.0 V
Maximum Junction Temperature +150 °C
Storage Temperature –65 +150 °C
Lead Temperature +300 °C
*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 indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating for extended periods may affect device
reliability.
AD768
REV. B
ORDERING GUIDE
Package
Model Package Description Option
AD768AR 28-Pin 300 mil SOIC R-28
AD768ACHIPS Die
AD768-EB AD768 Evaluation Board
–3–
t
H
t
S
t
LPW
t
PD
t
ST
0.025%
0.025%
DB0–DB15
CLOCK
IOUTA
OR
IOUTB
Timing Diagram
WARNING!
ESD SENSITIVE DEVICE
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 AD768 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.