10

10 - 10

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20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Order On-line at www.hittite.com

SiGe WIDEBAND DIRECT

MODULATOR RFIC, 250 - 3800 MHz

v02.0705

General Description

Features

Functional Diagram

The HMC495LP3 & HMC495LP3E are low noise

Wideband Direct Quadrature Modulator RFICs which

are ideal for digital modulation applications from 250 -

3800 MHz including; Cellular/3G, Broadband Wireless

Access & ISM circuits. Housed in a compact 3x3 mm

(LP3) SMT QFN package, the RFIC requires minimal

external components & provides a low cost alternative

to more complicated double upconversion architec-

tures. The RF output port is single-ended and matched

to 50 Ohms with no external components. The LO re-

quires -6 to +6 dBm and can be driven in either dif-

ferential or single-ended mode while the Baseband in-

puts will support modulation inputs from DC - 250 MHz

typical. This device is optimized for a supply voltage of

+3.3V @ 108 mA and will provide stable performance

over a +3V to +3.6V range.

Wideband RF Frequency Range

High Carrier Suppression: 38 dBc

Very Low Noise Floor: -158 dBm/Hz

Low LO Power: -6 to +6 dBm

Differential or Single Ended LO Input

Single Low Current Supply: +3.3V@ 108 mA

Typical Applications

The HMC495LP3 / HMC495LP3E is suitable for

various modulation systems:

• UMTS, GSM or CDMA Basestations

• Fixed Wireless or WLL

• ISM Transceivers, 900 & 2400 MHz

• GMSK, QPSK, QAM, SSB Modulators

Parameter

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

Units

Frequency Range, RF

450 - 960

1800 - 2200

2100 - 2700

3400 - 3800

MHz

Output Power

-7

-5

-8

-6

-9

-7

-11

-9

dBm

Output P1dB

2

1

0

-2

dBm

Output IP3

17

14

14

13

dBm

Output Noise Floor

-159

-158

-158

-157

dBm/Hz

Carrier Suppression (uncalibrated)

38

38

35

34

dBc

Sideband Suppression

(uncalibrated)

34

31

30

28

dBc

IM3 Suppression

59

50

50

56

dBc

RF Port Return Loss

18

17

16

13

dB

LO Port Return Loss

13

8

7

5

dB

CDMA IS95

ACPR@ 880 MHz & 1960 MHz

-72

-71.5

N/A

N/A

dBc

Channel Power

-15

-18.4

N/A

N/A

dBm

W-CDMA 3GPP

ACPR@ 1960 & 2140 MHz

N/A

-60

-59

N/A

dBc

Channel Power

N/A

-17.3

-14.4

N/A

dBm