Datasheet

AD7654
Rev. B | Page 7 of 28
ABSOLUTE MAXIMUM RATINGS
Table 5.
Parameter Values
Analog Inputs
INAx
1
, INBx
1
, REFx, INxN,
REFGND
AVDD + 0.3 V to
AGND − 0.3 V
Ground Voltage Differences
AGND, DGND, OGND ±0.3 V
Supply Voltages
AVDD, DVDD, OVDD −0.3 V to +7 V
AVDD to DVDD, AVDD to OVDD ±7 V
DVDD to OVDD −0.3 V to +7 V
Digital Inputs −0.3 V to DVDD + 0.3 V
Internal Power Dissipation
2
700 mW
Internal Power Dissipation
3
2.5 W
Junction Temperature 150°C
Storage Temperature Range −65°C to +150°C
Lead Temperature Range
(Soldering 10 sec) 300°C
1
See Analog Inputs section.
2
Specification is for device in free air:
48-lead LQFP: θ
JA
= 91°C/W, θ
JC
= 30°C/W.
3
Specification is for device in free air: 48-lead LFCSP; θ
JA
= 26°C/W.
Stresses above those listed under Absolute Maximum Ratings
may cause 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
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
TO OUTPUT
PIN
C
L
60pF*
500µA
I
OH
1.6mA
I
OL
1.4V
*
IN SERIAL INTERFACE MODES, THE SYNC, SCLK, AND
SDOUT TIMINGS ARE DEFINED WITH A MAXIMUM LOAD
C
L
OF 10pF; OTHERWISE, THE LOAD IS 60pF MAXIMUM.
03057-002
Figure 2. Load Circuit for Digital Interface Timing
(SDOUT, SYNC, SCLK Outputs, C
L
= 10 pF)
0.8V
2V
2V
0.8V
t
DELAY
2V
0.8V
t
DELAY
03057-003
Figure 3. Voltage Reference Levels for Timing
ESD 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 this product 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.