Файл:AD607.pdf

AD607 The board provides SMA connectors for the RF and LO port inputs, the demodulated I and Q outputs, the manual gain control (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 demodulators, 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 Designation

Connector Type

Description

Coupling

Approximate Signal Level

J1

SMA

Frequency Detector Input

DC

± 400 mV

This pin needs to be biased at VMID and ac coupled when driven by an external signal generator.

J2

SMA

Power Up

DC

Tied to Positive Supply by Jumper J10.

J3

SMA

LO Input

AC

J4

SMA

RF Input

AC

J5

SMA

MGC Input or RSSI Output

DC

CMOS Logic Level Input –16 dBm (± 50 mV) –15 dBm max (± 54 mV) 0.4 V to 2.0 V (3 V Supply) (GREF = VMID)

J6

SMA

IF Output

AC

NA

J7

SMA

Q Output

AC

NA

J8

SMA

I Output

AC

NA

J9

Jumper

Ties GREF to VMID

NA

NA

J10

Jumper

NA

NA

T1

Terminal Pin

DC

DC

T2

Terminal Pin

Ties Power-Up to Positive Supply Power Supply Positive Input (VPS1, VPS2) Power Supply Return (GND)

This signal level depends on the AD607’s gain setting. This signal level depends on the AD607’s gain setting. This signal level depends on the AD607’s gain setting. Sets gain-control Scale Factor (SF); SF = 75/VMID in dB/V, where VMID = VPOS/2. Remove to test Power Up/Down.

DC

0V

REV. 0

–21–

Comments

Input is terminated in 50 Ω. Input is terminated in 50 Ω. Jumper is set for Manual Gain Control Input; See Table I for Control Voltage Values.

2.7 V to 5.5 V Draws 8.5 mA at midgain connection.