Data Sheet

AD8312

Rev. B | Page 7 of 20

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

1

VPOS

6

RFIN

2

VOUT

5

COMM

3

VSET

4

CFLT

AD8312

TOP VIEW

(Not to Scale)

Figure 2. Pin Configuration

Table 3. Pin Function Descriptions

Ball No.

Mnemonic

Description

1

VPOS

Positive Supply Voltage (VS), 2.7 V to 5.5 V.

2

VOUT

Logarithmic Output. Output voltage increases with increasing input amplitude.

3

VSET

Setpoint Input. Connect VSET to VOUT for measurement mode operation. The nominal logarithmic slope of

20 mV/dB can be increased to an arbitrarily high value by attenuating the signal between VOUT and VSET

(see the Increasing the Logarithmic Slope section).

4

CFLT

Connection for an External Capacitor to Slow the Response of the Output. Capacitor is connected between

CFLT and VOUT.

5

COMM

Device Common (Ground).

6

RFIN

RF Input.