AD8319

Data Sheet

Rev. D | Page 6 of 19

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

NOTES

1. THE PAD IS INTERNALLY CONNECTED TO

COMM; SOLDER TO A LOW IMPEDANCE

GROUND PLANE.

1

INHI

2

COMM

3

CLPF

4

VSET

8 INLO

7 VPOS

6 TADJ

5 VOUT

AD8319

TOP VIEW

(Not to Scale)

Figure 2. Pin Configuration

Table 3. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

INHI

RF Input. Nominal input range of −50 dBm to 0 dBm, re: 50 Ω; ac-coupled RF input.

2

COMM

Device Common. Connect this pin to a low impedance ground plane.

3

CLPF

Loop Filter Capacitor. In measurement mode, this capacitor sets the pulse response time and video bandwidth.

In controller mode, the capacitance on this node sets the response time of the error amplifier/integrator.

4

VSET

Setpoint Control Input for Controller Mode or Feedback Input for Measurement Mode.

5

VOUT

Measurement and Controller Output. In measurement mode, VOUT provides a decreasing linear-in-dB

representation of the RF input signal amplitude. In controller mode, VOUT is used to control the gain of a VGA or

VVA with a positive gain sense (increasing voltage increases gain).

6

TADJ

Temperature Compensation Adjustment. Frequency dependent temperature compensation is set by connecting

a ground referenced resistor to this pin.

7

VPOS

Positive Supply Voltage, 3.0 V to 5.5 V.

8

INLO

RF Common for INHI. AC-coupled RF common.

EPAD

The pad is internally connected to COMM; solder to a low impedance ground plane.