LT5506_15 datasheet(2/12 Pages) LINER

Part #	LT5506

Description	40MHz to 500MHz Quadrature Demodulator with VGA

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LT5506

2

5506fa

Supply Voltage ....................................................... 5.5V

Differential Voltage Between 2xLO+ and 2xLO–.......... 4V

IF+, IF– ............................................. –500mV to 500mV

IOUT+, IOUT–, QOUT+, QOUT– .................. VCC – 1.8V to VCC

Operating Ambient Temperature

(Note 2) ...................................................–40

°C to 85°C

Storage Temperature Range ..................–65

°C to 125°C

Voltage on Any Pin

Not to Exceed ........................ –500mV to VCC + 500mV

ORDER PART

NUMBER

TJMAX = 125°C, θJA = 37°C/W

EXPOSED PAD (PIN 17) IS GROUND

MUST BE SOLDERED TO PCB

LT5506EUF

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

ELECTRICAL CHARACTERISTICS V

CC = 3V. f2xLO = 570MHz, P2xLO = – 5dBm (Note 5), fIF = 284MHz,

PIF = –30dBm, I and Q outputs 800mVP-P into 4kΩ differential load, TA = 25°C, EN = VCC, STBY = VCC, unless otherwise noted. (Note 3)

Consult LTC Marketing for parts specified with wider operating temperature ranges.

16 15 14 13

5

6

7

8

TOP VIEW

17

UF PACKAGE

16-LEAD (4mm

× 4mm) PLASTIC QFN

9

10

11

12

4

3

2

1

GND

IF+

IF–

GND

STBY

2xLO+

2xLO–

EN

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IF Input

fIF

Frequency Range

40 to 500

MHz

Nominal Input Level

RSOURCE = 200Ω Differential

–79 to –22

dBm

Input Impedance

IF+, IF– to GND, EN = VCC

100

Ω//1.2pF

IF+, IF– to GND, EN = GND

1pF

NF

Noise Figure at Max Gain

VCTRL = 1.7V

6.8

dB

GL

Min Gain (Note 4)

VCTRL = 0.2V

0.9

8

dB

GH

Max Gain (Note 4)

VCTRL = 1.7V

50

59

dB

IIP3

Input IP3, Min Gain

PIF = –22.5dBm (Note 7)

–0.5

dBm

Input IP3, Max Gain

PIF = –75dBm (Note 7)

–49

dBm

IIP2

Input IP2, Max Gain

VCTRL = 1.7V

–8

dBm

Demodulator I/Q Output

Nominal Voltage Swing

(Note 6)

0.8

VP-P

Clipping Level

(Note 6)

1.25

VP-P

DC Common Mode Voltage

VCC – 1.19

V

I/Q Amplitude Imbalance

(Note 8)

0.2

0.5

dB

I/Q Phase Imbalance

(Note 8)

0.6

3

Deg

DC Offset

(Notes 6, 8)

28

mV

Output Driving Capability

Single Ended, CLOAD ≤ 10pF

2

1.5

k

Ω

STBY to Turn-On Delay

0.3

µs

I/Q Output 1dB Compression

–11.5

dBm

I/Q Output IM3

PIF, 1 = –25.5dBm, 280MHz

– 50

dBc

PIF, 2 = –25.5dBm, 280.1MHz (Note 7)

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