AD607 datasheet(21/24 Pages) AD

21 / 24 page

AD607

REV. 0

–21–

The board provides SMA connectors for the RF and LO port

inputs, the demodulated I and Q outputs, the manual gain con-

trol (MGC) input, the PLL input, and the power-up input. In

addition, the IF output is also available at an SMA connector;

this may be connected to the PLL input for carrier recovery to

realize synchronous AM and FM detection via the I and Q de-

modulators, respectively. Table III lists the AD607 Evaluation

Board’s I/O Connectors and their functions.

Table III. AD607 Evaluation Board Input and Output Connections

Reference

Connector

Approximate

Designation

Type

Description

Coupling

Signal Level

Comments

SMA

Frequency

±400 mV

This pin needs to be biased at VMID

Detector Input

and ac coupled when driven by an

external signal generator.

SMA

Power Up

CMOS Logic

Tied to Positive Supply by Jumper J10.

Level Input

SMA

LO Input

–16 dBm

Input is terminated in 50

Ω.

(

±50 mV)

SMA

RF Input

–15 dBm max

Input is terminated in 50

Ω.

(

±54 mV)

SMA

MGC Input

0.4 V to 2.0 V

Jumper is set for Manual Gain Control

(3 V Supply)

Input; See Table I for Control Voltage

RSSI Output

(GREF = VMID)

Values.

SMA

IF Output

This signal level depends on the

AD607’s gain setting.

SMA

Q Output

This signal level depends on the

AD607’s gain setting.

SMA

I Output

This signal level depends on the

AD607’s gain setting.

Jumper

Ties GREF

Sets gain-control Scale Factor (SF);

to VMID

SF = 75/VMID in dB/V, where

VMID = VPOS/2.

J10

Jumper

Ties Power-Up

Remove to test Power Up/Down.

to Positive

Supply

Terminal Pin

Power Supply

2.7 V to 5.5 V

Positive Input

Draws 8.5 mA at

(VPS1, VPS2)

midgain connection.

Terminal Pin

Power Supply

0 V

Return (GND)

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