Datasheet

AD7674
Rev. A | Page 7 of 28
ABSOLUTE MAXIMUM RATINGS
Table 5. AD7674 Absolute Maximum Ratings
1
Parameter Rating
Analog Inputs
IN+
2
, IN–
2
, REF, REFBUFIN,
REFGND to AGND
AGND – 0.3 V to
AVDD + 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
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.
2
See Analog Input section.
3
Specification is for device in free air: 48-Lead LQFP: θ
JA
= 91°C/W,
θ
JC
= 30°C/W.
4
Specification is for device in free air: 48-Lead LFCSP: θ
JA
= 26°C/W.
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.
NOTE
1
03083–0–002
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
03083–0–003
Figure 3. Voltage Reference Levels for Timing
ESD CAUTION