EVAL-AD7678CB Analog Devices Inc, EVAL-AD7678CB Datasheet - Page 7

• Manufacturer Part Number: EVAL-AD7678CB
• Description: BOARD EVALUATION FOR AD7678
• Manufacturer: Analog Devices Inc
• Series: PulSAR®r

Specifications of EVAL-AD7678CB

• Number Of Adc's: 1
• Number Of Bits: 18
• Sampling Rate (per Second): 100k
• Data Interface: Serial, Parallel
• Inputs Per Adc: 1 Differential
• Input Range: ±VREF
• Power (typ) @ Conditions: 31mW @ 100kSPS
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: AD7678
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ABSOLUTE MAXIMUM RATINGS
Table 5. AD7678 Absolute Maximum Ratings
Parameter
Analog Inputs
Ground Voltage Differences
Supply Voltages
Internal Power Dissipation
Internal Power Dissipation
Junction Temperature
Storage Temperature Range
Lead Temperature Range
1
2
3
4
Stresses above those listed under Absolute Maximum Ratings may cause
See Analog Inputs section.
Specification is for device in free air: 48-Lead LQFP: θ
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.
θ
Specification is for device in free air: 48-Lead LFCSP: θ
JC
IN+
to AGND
AGND, DGND, OGND
AVDD, DVDD, OVDD
AVDD to DVDD, AVDD to OVDD
DVDD to OVDD
Digital Inputs
(Soldering 10 sec)
= 30°C/W.
2
, IN–
2
, REF, REFBUFIN, REFGND
3
4
Rating
AVDD + 0.3 V to
AGND – 0.3 V
±0.3 V
–0.3 V to +7 V
±7 V
–0.3 V to +7 V
–0.3 V to DVDD + 0.3 V
700 mW
2.5 W
150°C
–65°C to +150°C
300°C
JA
JA
= 91°C/W,
= 26°C/W.
1
Rev. A | Page 7 of 28
ESD CAUTION
TO OUTPUT
1
t
DELAY
IN SERIAL INTERFACE MODES,THE SYNC, SCLK, AND
SDOUT TIMINGS ARE DEFINED WITH A MAXIMUM LOAD
C
0.8V
L
Figure 2. Load Circuit for Digital Interface Timing,
OF 10pF; OTHERWISE,THE LOAD IS 60pF MAXIMUM.
Figure 3. Voltage Reference Levels for Timing
PIN
SDOUT, SYNC, SCLK Outputs, C
60pF
C
L
1
2V
0.8V
500A
1.6mA
I
I
OL
OH
2V
L
= 10 pF
1.4V
t
DELAY
2V
0.8V
03084–0–002
03084–0–003
AD7678