AD6674 datasheet(13/97 Pages) AD

13 / 97 page

AD6674

Data Sheet

Rev. C | Page 12 of 96

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

AD6674

TOP VIEW

(Not to Scale)

AVDD1

AVDD2

AVDD3

VIN–A

VIN+A

AVDD3

AVDD2

V_1P0

SPIVDD

PDWN/STBY

DVDD

DGND

AVDD1

AVDD2

AVDD3

VIN–B

VIN+B

AVDD3

AVDD2

SPIVDD

CSB

SCLK

SDIO

DVDD

DGND

NOTES

1. EXPOSED PAD. THE EXPOSED THERMAL PAD ON THE BOTTOM OF THE

PACKAGE PROVIDES THE GROUND REFENCE FOR AVDDx. THIS EXPOSED

PAD MUST BE CONNECTED TO GROUND FOR PROPER OPERATION.

Figure 5. Pin Configuration

Table 8. Pin Function Descriptions

Pin No.

Mnemonic

Type

Description

Power Supplies

EPAD

Ground

Exposed Pad. The exposed thermal pad on the bottom of the package provides the

ground reference for AVDDx. This exposed pad must be connected to ground for

proper operation. See the Applications Information section for more details.

1, 2, 47, 48, 49,

52, 55, 61, 64

AVDD1

Supply

Analog Power Supply (1.25 V Nominal).

3, 8, 9, 10, 11,

39, 40, 41, 46,

50, 51, 62, 63

AVDD2

Supply

Analog Power Supply (2.5 V Nominal).

4, 7, 42, 45

AVDD3

Supply

Analog Power Supply (3.3 V Nominal).

13, 38

SPIVDD

Supply

Digital Power Supply for SPI (1.7 V to 3.4 V).

15, 34

DVDD

Supply

Digital Power Supply (1.25 V Nominal).

16, 33

DGND

Ground

Ground Reference for DVDD.

18, 31

DRGND

Ground

Ground Reference for DRVDD.

19, 30

DRVDD

Supply

Digital Driver Power Supply (1.25 V Nominal).

56, 60

AGND1

Ground

Ground Reference for SYSREF±.

AVDD1_SR1

Supply

Analog Power Supply for SYSREF± (1.25 V Nominal).

Analog

5, 6

VIN−A, VIN+A

Input

ADC A Analog Input Complement/True.

V_1P0

Input/DNC

1.0 V Reference Voltage Input/Do Not Connect. This pin is configurable through the

SPI as a no connect or an input. Do not connect this pin if using the internal

reference. This pin requires a 1.0 V reference voltage input if using an external

voltage reference source.

43, 44

VIN+B, VIN−B

Input

ADC B Analog Input True/Complement.

53, 54

CLK+, CLK−

Input

Clock Input True/Complement.

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