AD8264

Rev. 0 | Page 7 of 40

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

IPP2

OPP3

IPN3

IPP3

8

7

6

5

1

4

3

2

29

30

31

32

28

34 33

27

IPN2

IPN1

OPP1

OPP2

14

13

17

12

11

18

VOH3

VGA3

VOL3

15 16

20

37

35

19

VOH1

VOH2

21

22

23

24

VGA2

VOL2

VOL1

PIN1

INDICATOR

AD8264

TOP VIEW

(Not to Scale)

IPN4

OPP4

10

9

38

39

VOL4

VOH4

36

40

25

26

NOTES

1. EXPOSED PADDLE (PIN 0) NEEDS AN ELECTRICAL

CONNECTION TO GROUND. FOR PROPER RF GROUNDING

AND INCREASED RELIABILITY, THE PAD MUST BE

CONNECTED TO THE GROUND PLANE.

Figure 2. Pin Configuration

Table 4. Pin Function Descriptions

Pin No.

Mnemonic

Description

0 (EP), 12, 39

COMM

Ground. Exposed paddle (EP, Pin 0) needs an electrical connection to ground. For proper RF grounding

and increased reliability, the pad must be connected to the ground plane.

1, 4, 7, 10

IPN1, IPN2,

IPN3, IPN4

Negative Preamp Inputs for Channel 1 Through Channel 4. Normally, no external connection is needed.

2, 3, 8, 9

OPP1, OPP2,

OPP3, OPP4

Preamp Output for Channel 1 Through Channel 4. This pin is internally connected to the attenuator

(VGA) input, and normally, no external connection is needed.

5, 6, 11, 40

IPP1, IPP2,

IPP3, IPP4

Positive Preamp Input for Channel 1 Through Channel 4. High impedance.

13, 14, 37, 38

GNH1, GNH2,

GNH3, GNH4

Positive Gain Control Voltage Input for Channel 1 Through Channel 4. This pin is referenced to GNLO (Pin 36).

15

VOCM

This pin sets the differential output amplifier (VOHx and VOLx) common-mode voltage.

16, 35

VPOS

Positive Supply (Internally Tied Together).

17, 34

VNEG

Negative Supply (Internally Tied Together).

18, 19, 32, 33

OFS1, OFS2,

OFS3, OFS4

Voltage sets the differential output offset for Channel 1 through Channel 4. This is the noninverting input

to the differential amplifier, and it has the same bandwidth as the inverting input (VGAx).

20, 25, 26, 31

VGA4, VGA3

VGA2, VGA1

VGA Output for Channel 1 Through Channel 4.

21, 24, 27, 30

VOL1, VOL2

VOL3, VOL4

Negative Differential Amplifier Output for Channel 1 Through Channel 4.

22, 23, 28, 29

VOH1, VOH2,

VOH3, VOH4

Positive Differential Amplifier Output for Channel 1 Through Channel 4.

36

GNLO

Negative Gain Control Input (Reference for GNHx Pins).