AD8368

Rev. A | Page 6 of 20

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

18

ICOM

1

GAIN

24

23

22

21

20

19

78

9

10

11

12

17

ICOM

2

DETO

16

ICOM

3

HPFL

15

DECL

4

DECL

14

DECL

5

DETI

13

VPSI

6

OCOM

AD8368

TOP VIEW

(Not to Scale)

Figure 2. Pin Configuration

Table 4. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

GAIN

Gain Control.

2

DETO

Detector Output. Provides an output error current for the AGC function.

3

HPFL

High-Pass Filter Connection. A capacitor to ground sets the corner frequency of the internal output offset

control loop that controls the minimum usable input frequency.

4, 14, 15

DECL

(see the Applications

Information section).

5

DETI

Detector Input. DC level referenced to DECL pin.

6, 7

OCOM

Connect OCOM to low impedance ground.

8

OUTP

Signal Output. Must be ac-coupled.

9, 10

VPSO

Positive Supply Voltage, 4.5 V to 5.5 V. VPSO and VPSI must be connected together externally and

properly bypassed.

11, 12, 13, 22, 23

VPSI

Positive Supply Voltage, 4.5 V to 5.5 V. VPSO and VPSI must be connected together externally and

properly bypassed.

16, 17, 18, 20

ICOM

Connect ICOM to low impedance ground.

19

INPT

Signal Input. Must be ac-coupled.

21

MODE

Gain Direction Control. High for positive slope. Low for negative slope.

24

ENBL

Apply a positive voltage (2.5V

≤ V

ENBL

≤ VPSI) to activate device.