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componentes Descripción

Fabricante

AD61009ARSZ

Low Power Mixer 3 V Receiver IF Subsystem

Analog Devices 

AD61009

Pin Mnemonic

1 FDIN

2 COM1

3 PRUP

4 LOIP

5 RFLO

6 RFHI

7 GREF

8 MXOP

9 VMID

10 IFHI

11 IFLO

12 GAIN

13 COM2

14 IFOP

15 DMIP

16 VPS2

17 QOUT

18 IOUT

19 FLTR

20 VPS1

PIN FUNCTION DESCRIPTIONS

Reads

Frequency Detector Input

Common #1

Power-Up Input

Local Oscillator Input

RF “Low” Input

RF “High” Input

Gain Reference Input

Mixer Output

Midsupply Bias Voltage

IF “High” Input

IF “Low” Voltage

Gain Control Input

Common #2

IF Output

Demodulator Input

VPOS Supply #2

Quadrature Output

In-Phase Output

PLL Loop Filter

VPOS Supply #1

Function

PLL input for I/Q demodulator quadrature oscillator, ± 400 mV

drive required from external oscillator. Must be biased at VP/2.

Supply common for RF front end and main bias.

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

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

LO input, ac coupled ± 54 mV LO input required (–16 dBm for

50 Ω input termination).

Usually connected to ac ground.

AC coupled, ± 56 mV, max RF input for linear operation.

High impedance input, typically 1.5 V, sets gain scaling.

High impedance, single-sided current output, ± 1.3 V max voltage

output (± 6 mA max current output).

Output of the midsupply bias generator (VMID = VPOS/2).

AC coupled IF input, ± 56 mV max input for linear operation.

Reference node for IF input; auto-offset null.

High impedance input, 0 V–2 V using 3 V supply, max gain at

V = 0.

Supply common for IF stages and demodulator.

Low impedance, single-sided voltage output, 5 dBm (± 560 mV)

max.

Signal input to I and Q demodulators ± 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.

Supply to high-level IF, PLL, and demodulators.

Low impedance Q baseband output; ± 1.23 V full scale in 20 kΩ

min load; ac coupled.

Low impedance I baseband output; ± 1.23 V full scale in 20 kΩ

min load; ac coupled.

Series RC PLL Loop filter, connected to ground.

Supply to mixer, low level IF, PLL, and gain control.

PIN CONNECTION

20-Lead SSOP (RS-20)

FDIN 1

20 VPS1

COM1 2

19 FLTR

PRUP 3

18 IOUT

LOIP 4

17 QOUT

RFLO

RFHI

GREF

5 AD61009 16 VPS2

6

TOP VIEW 15

(Not to Scale)

DMIP

7

14 IFOP

MXOP 8

13 COM2

VMID 9

12 GAIN

IFHI 10

11 IFLO

–4–

REV. 0

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