AD7946 Просмотр технического описания (PDF) - Analog Devices

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AD7946

14-Bit, 500 kSPS PulSAR ADC in MSOP

Analog Devices 

AD7946

ABSOLUTE MAXIMUM RATINGS

Table 5.

Parameter

Analog Inputs

IN+1, IN−1

REF

Supply Voltages

VDD, VIO to GND

VDD to VIO

Digital Inputs to GND

Digital Outputs to GND

Storage Temperature Range

Junction Temperature

θJA Thermal Impedance

10-Lead MSOP

10-Lead QFN

θJC Thermal Impedance

10-Lead MSOP

10-Lead QFN

Lead Temperature

Vapor Phase (60 sec)

Infrared (15 sec)

Rating

GND − 0.3 V to VDD + 0.3 V or

±130 mA

GND − 0.3 V to VDD + 0.3 V

−0.3 V to +7 V

±7 V

−0.3 V to VIO + 0.3 V

−0.3 V to VIO + 0.3 V

−65°C to +150°C

150°C

200°C/W

48.7°C/W

44°C/W

2.96°C/W

215°C

220°C

1 See the Analog Input section.

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

500µA IOL

TO

SDO

CL

50pF

1.4V

500µA IOH

Figure 2. Load Circuit for Digital Interface Timing

30% VIO

tDELAY

70% OVDD

2V or OVDD – 0.5V1

0.8V or 0.5V2

tDELAY

2V or VIO – 0.5V1

0.8V or 0.5V2

NOTES

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 3. Voltage Levels for Timing

Rev. A | Page 6 of 24

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