Datasheet

AD7679
Rev. A | Page 7 of 28
ABSOLUTE MAXIMUM RATINGS
Table 5.AD7679 Absolute Maximum Ratings
1
TO OUTPUT
PIN
C
L
60pF
1
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.
1
03085–0–002
Parameter Rating
Analog Inputs
IN+
2
, IN–
2
, REF, REFBUFIN, REFGND to
AGND
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
3
700 mW
Internal Power Dissipation
4
2.5 W
Junction Temperature 150°C
Storage Temperature Range –65°C to +150°C
Lead Temperature Range
(Soldering 10 sec)
300°C
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
03085–0–003
Figure 3. Voltage Reference Levels for Timing
1
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.
ESD CAUTION
2
See Analog Inputs section.
3
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.