AD9239 datasheet(9/40 Pages) AD

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AD9239

Rev. 0 | Page 9 of

PIN CONFIGURATION AND FUNCTION DESCRIPTION

TEMPOUT

RBIAS

AVDD

VCM D

AVDD

VIN – D

VIN + D

AVDD

CLK–

CLK+

AVDD

PGM0

PGM1

PGM2

PGM3

AVDD

VCM A

AVDD

VIN – A

VIN + A

AVDD

CSB

SCLK

SDI/SDIO

SDO

PIN 1

INDICATOR

AD9239

TOP VIEW

(Not to Scale)

PIN 0 = EPAD = AGND

NOTES

1. NC = NO CONNECT.

2. THE EXPOSED PADDLE MUST BE SOLDERED TO THE GROUND PLANE

FOR THE LFCSP PACKAGE. SOLDERING THE EXPOSED PADDLE TO

THE CUSTOMER BOARD INCREASES THE RELIABILITY OF THE SOLDER

JOINTS, MAXIMIZING THE THERMAL CAPABILITY OF THE PACKAGE.

Figure 3. Pin Configuration

Table 7. Pin Function Descriptions

Pin No.

Mnemonic

Description

AGND

Analog Ground (Exposed Paddle).

23, 34

DRGND

Digital Output Driver Ground.

4, 7, 9, 12, 13, 14,

15, 18, 20, 21, 41, 42,

43, 46, 48, 55, 57,

60, 61, 62, 64, 65,

66, 69, 71

AVDD

1.8 V Analog Supply.

24, 33

DRVDD

1.8 V Digital Output Driver Supply.

TEMPOUT

Output Voltage to Monitor Temperature.

RBIAS

External Resistor to Set the Internal ADC Core Bias Current.

VCM D

Common-Mode Output Voltage Reference (0.5 × AVDD).

VIN − D

ADC D Analog Complement.

VIN + D

ADC D Analog True.

CLK−

Input Clock Complement.

CLK+

Input Clock True.

RESET

Digital Output Timing Reset.

DOUT + D

ADC D True Digital Output.

DOUT − D

ADC D Complement Digital Output.

DOUT + C

ADC C True Digital Output.

DOUT − C

ADC C Complement Digital Output.

DOUT + B

ADC B True Digital Output.

DOUT − B

ADC B Complement Digital Output.

DOUT + A

ADC A True Digital Output.

DOUT − A

ADC A Complement Digital Output.

PDWN

Power-Down.

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