AD607ARSZ datasheet(4/24 Pages) AD

4 / 24 page

REV. C

–4–

AD607

PIN FUNCTION DESCRIPTIONS

Mnemonic

Reads

Function

FDIN

Frequency Detector Input

PLL Input for I/Q Demodulator Quadrature Oscillator,

±400 mV

Drive Required from External Oscillator. Must be biased at VP/2.

COM1

Common #1

Supply Common for RF Front End and Main Bias

PRUP

Power-Up Input

3 V/5 V CMOS compatible power-up control; logical high =

powered-up; max input level = VPS1 = VPS2.

LOIP

Local Oscillator Input

LO input, ac-coupled

±54 mV LO input is required (–16 dBm for

Ω input termination).

RFLO

RF “Low” Input

Usually Connected to AC Ground

RFHI

RF “High” Input

AC-Coupled,

±56 mV, Max RF Input for Linear Operation

GREF

Gain Reference Input

High Impedance Input, typically 1.5 V, sets gain scaling.

MXOP

Mixer Output

High Impedance, Single-Sided Current Output,

±1.3 V Max

Voltage Output (

±6 mA Max Current Output)

VMID

Midsupply Bias Voltage

Output of the Midsupply Bias Generator (VMID = VPOS/2)

IFHI

IF “High” Input

AC-Coupled IF Input,

±56 mV Max Input for Linear Operation

IFLO

IF “Low” Input

Reference Node for IF Input; Auto-Offset Null

GAIN

Gain Control Input

High Impedance Input, 0 V–2 V Using 3 V Supply, Max Gain at

V = 0

COM2

Common #2

Supply Common for IF Stages and Demodulator

IFOP

IF Output

Low Impedance, Single-Sided Voltage Output, 5 dBm

(

±560 mV) Max

DMIP

Demodulator Input

Signal input to I and Q demodulators has a

±150 mV max input

at IF > 3 MHz for linear operation;

±75 mV max input at IF < 3 MHz

for linear operation. Must be biased at VP/2.

VPS2

VPOS Supply #2

Supply to High Level IF, PLL, and Demodulators

QOUT

Quadrature Output

Low Impedance Q Baseband Output;

±1.23 V Full Scale in 20 kΩ

Min Load; AC-Coupled

IOUT

In-Phase Output

Low Impedance I Baseband Output;

±1.23 V Full Scale in 20 kΩ

Min Load; AC-Coupled

FLTR

PLL Loop Filter

Series RC PLL Loop Filter, Connected to Ground

VPS1

VPOS Supply #1

Supply to Mixer, Low Level IF, PLL, and Gain Control

PIN CONNECTION

20-Lead SSOP (RS-20)

TOP VIEW

(Not to Scale)