AD7688 datasheet(6/28 Pages) AD

Part #	AD7688

Description	16-Bit, 1.5 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/QFN

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AD7688

Rev. A | Page 6 of 28

ABSOLUTE MAXIMUM RATINGS

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.

Table 5.

Parameter

Rating

Analog Inputs

IN+1, IN−1

GND − 0.3 V to VDD + 0.3 V

or ±130 mA

REF

GND − 0.3 V to VDD + 0.3 V

Supply Voltages

VDD, VIO to GND

−0.3 V to +7 V

VDD to VIO

±7 V

Digital Inputs to GND

−0.3 V to VIO + 0.3 V

Digital Outputs to GND

−0.3 V to VIO + 0.3 V

Storage Temperature Range

−65°C to +150°C

Junction Temperature

150°C

Lead Temperature Range

JEDEC J-STD-20

THERMAL RESISTANCE

θJA is specified for the worst-case conditions, that is, a device

soldered in a circuit board for surface-mount packages.

Table 6. Thermal Resistance

Package Type

θJA

θJC

Unit

10-Lead QFN (LFCSP)

48.7

2.96

°C

10-Lead MSOP

200

44

°C

1 See the Analog Input section.

ESD CAUTION

500

μAI

OL

500

μAI

OH

1.4V

TO SDO

CL

50pF

Figure 3. Load Circuit for Digital Interface Timing

30% VIO

70% VIO

2V OR VIO – 0.5V1

0.8V OR 0.5V2

2V OR VIO – 0.5V1

tDELAY

12V IF VIO ABOVE 2.5V, VIO – 0.5V IF VIO BELOW 2.5V.

20.8V IF VIO ABOVE 2.5V, 0.5V IF VIO BELOW 2.5V.

Figure 4. Voltage Levels for Timing

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