Manual

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General Description

The MAX9995 dual, high-linearity, downconversion

mixer provides 6.1dB gain, +25.6dBm IIP3, and 9.8dB

NF for UMTS/WCDMA, DCS, and PCS base-station

applications. The MAX9995 is ideal for low-side LO

injection. (For a mixer variant optimized for high-side

LO injection, contact the factory.)

This device integrates baluns in the RF and LO ports, a

dual-input LO selectable switch, an LO buffer, two double-

balanced mixers, and a pair of differential IF output ampli-

fiers. The MAX9995 requires a typical LO drive of 0dBm

and supply current is guaranteed to be below 380mA.

These devices are available in a compact 36-pin thin

QFN package (6mm × 6mm) with an exposed paddle.

Electrical performance is guaranteed over the extended

temperature range, from T

= -40°C to +85°C.

Applications

Features

♦ 1700MHz to 2200MHz RF Frequency Range

♦ 1400MHz to 2000MHz LO Frequency Range

(MAX9995)

♦ 1900MHz to 2400MHz LO Frequency Range

(Contact Factory)

♦ 40MHz to 350MHz IF Frequency Range

♦ 6.1dB Conversion Gain

♦ +25.6dBm Input IP3

♦ 9.8dB Noise Figure

♦ 66dBc 2RF–2LO Spurious Rejection at

= -10dBm

♦ Dual Channels Ideal for Diversity Receiver

Applications

♦ Integrated LO Buffer

♦ Integrated RF and LO Baluns for Single-Ended

Inputs

♦ Low -3dBm to +3dBm LO Drive

♦ Built-In SPDT LO Switch with 50dB LO1–LO2

Isolation and 50ns Switching Time

♦ 44dB Channel-to-Channel Isolation

MAX9995

Dual, SiGe, High-Linearity, 1700MHz to 2200MHz

Downconversion Mixer with LO Buffer/Switch

________________________________________________________________ Maxim Integrated Products 1

19-3383; Rev 0; 8/04

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

cdma2000 is a registered trademark of Telecommunications

Industry Association.

Ordering Information

PART TEMP RANGE PIN-PACKAGE

MAX9995ETX T

** = -40°C to +85°C 36 Thin QFN-EP*

MAX9995ETX-T T

= -40°C to +85°C 36 Thin QFN-EP*

MAX9995ETX+D T

= -40°C to +85°C

36 Thin QFN-EP*

lead free, bulk

MAX9995ETX+TD T

= -40°C to +85°C

36 Thin QFN-EP*

lead free, T/R

*EP = Exposed pad.

**T

= Case temperature.

LO2

GND

TAPDIV

TAPMAIN

RFMAIN

RFDIV

EXPOSED

PADDLE

IFD_SET

GND

IND_EXTD

LO_ADJ_D

N.C.

LO_ADJ_M

IND_EXTM

GND

IFM

_SET

IFD+

IFD-

IFM

LO1

LOSEL

GND

MAX9995

EXPOSED PADDLE ON THE BOTTOM OF THE PACKAGE

6mm x 6mm THIN QFN (EXPOSED PADDLE)

TOP VIEW

Pin Configuration/

Functional Diagram

UMTS/WCDMA and

cdma2000

3G Base

Stations

DCS1800 and EDGE

Base Stations

PCS1900 and EDGE

Base Stations

PHS/PAS Base Stations

Fixed Broadband

Wireless Access

Wireless Local Loop

Private Mobile Radio

Military Systems

Summary of content (13 pages)

PAGE 1
9-3383; Rev 0; 8/04 Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch The MAX9995 dual, high-linearity, downconversion mixer provides 6.1dB gain, +25.6dBm IIP3, and 9.8dB NF for UMTS/WCDMA, DCS, and PCS base-station applications. The MAX9995 is ideal for low-side LO injection. (For a mixer variant optimized for high-side LO injection, contact the factory.
PAGE 2
MAX9995 Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch ABSOLUTE MAXIMUM RATINGS VCC ........................................................................-0.3V to +5.5V LO1, LO2 to GND ...............................................................±0.3V IFM_, IFD_, IFM_SET, IFD_SET, LOSEL, LO_ADJ_M, LO_ADJ_D to GND.............-0.3V to (VCC + 0.3V) RFMAIN, RFDIV, and LO_ Input Power ..........................
PAGE 3
Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch (Typical Application Circuit, VCC = 4.75V to 5.25V, RF and LO ports are driven from 50Ω sources, PLO = -3dBm to +3dBm, fRF = 1700MHz to 2200MHz, fLO = 1400MHz to 2000MHz, fIF = 200MHz, with fRF > fLO, TC = -40°C to +85°C. Typical values are at VCC = 5.0V, PLO = 0dBm, fRF = 1900MHz, fLO = 1700MHz, fIF = 200MHz, and TC = +25°C, unless otherwise noted.) (Notes 1, 2) PARAMETER SYMBOL CONDITIONS VCC = 5.
PAGE 4
Typical Operating Characteristics (Typical Application Circuit, VCC = 5.0V, PRF = -5dBm, PLO = 0dBm, LO is low-side injected for a 200MHz IF, TC = +25°C.) 5.0 TC = +85°C 4.5 6.2 6.1 6.0 5.9 5.8 5.9 5.7 5.6 5.5 2000 2100 2200 1800 1900 2100 2200 1700 26.6 MAX9995 toc04 TC = +85°C 26.4 PLO = 0dBm 26.4 26.2 25.6 TC = -20°C TC = +25°C PLO = +3dBm 25.8 2000 2100 1800 2RF - 2LO vs. FUNDAMENTAL FREQUENCY 1900 2000 2100 2200 1700 TC = +85°C 65 2RF - 2LO vs.
PAGE 5
Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch PLO = -3dBm 80 78 TC = +85°C 74 72 70 82 PLO = +3dBm 80 78 1900 2000 2100 74 2200 72 1700 1800 1900 2000 2100 2200 1700 14.0 13.8 MAX9995 toc13 TC = +85°C PLO = 0dBm 13.7 13.6 13.2 14.0 13.3 2100 1900 LO SWITCH ISOLATION vs. LO FREQUENCY 2100 2200 1700 1800 LO SWITCH ISOLATION vs. LO FREQUENCY 53 PLO = -3dBm 50 TC = +25°C 48 VCC = 4.75V TO 5.
PAGE 6
Typical Operating Characteristics (continued) (Typical Application Circuit, VCC = 5.0V, PRF = -5dBm, PLO = 0dBm, LO is low-side injected for a 200MHz IF, TC = +25°C.) 80 60 PLO = -3dBm 50 30 40 40 30 1900 2000 2100 2200 30 1700 1800 2100 2200 1700 1800 -40 -45 -40 -45 TC = +25°C -30 PLO = +3dBm -35 VCC = 4.75V -40 PLO = 0dBm -45 -50 -55 2200 VCC = 5.25V PLO = -3dBm -35 2100 LO LEAKAGE AT IF PORT vs.
PAGE 7
Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch 44 41 TC = +25°C 42 41 40 39 TC = -20°C 38 2100 2200 1800 FREQUENCY (MHz) NOISE FIGURE vs. RF FREQUENCY 2200 1700 1800 MAX9995 toc31 9 PLO = 0dBm 10.4 10.0 9.9 PLO = +3dBm 10.2 VCC = 5.0V 10.1 10.0 9.9 9.8 9.7 9.7 VCC = 4.75V 9.6 9.5 9.6 1800 1900 2000 2100 2200 2200 VCC = 5.25V 10.3 TC = -20°C 6 2100 NOISE FIGURE vs. RF FREQUENCY PLO = -3dBm 9.8 2000 10.
PAGE 8
Typical Operating Characteristics (continued) (Typical Application Circuit, VCC = 5.0V, PRF = -5dBm, PLO = 0dBm, LO is low-side injected for a 200MHz IF, TC = +25°C.) LO RETURN LOSS vs. LO FREQUENCY (LO INPUT UN SELECTED) SUPPLY CURRENT vs. TEMPERATURE (TC) PLO = -3dBm TO +3dBm 360 355 SUPPLY CURRENT (mA) 5 10 15 20 25 MAX9995 toc38 365 MAX9995 toc37 0 RETURN LOSS (dB) MAX9995 Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch 350 VCC = 5.
PAGE 9
Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch PIN NAME DESCRIPTION 27 LO2 Local Oscillator 2 Input. This input is internally matched to 50Ω. Requires an input DC-blocking capacitor. 29 LO_ADJ_M LO Main Amplifier Bias Control. Connect a 392Ω resistor from this pin to ground to set the bias current for the main LO amplifier. 31 IND_EXTM Connect a 10nH inductor from this pin to ground to increase the RF-IF and LO-IF isolation.
PAGE 10
Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch MAX9995 Typical Application Circuit C19 T1 L1 VCC IF MAIN OUTPUT C21 R3 L2 4:1 R1 C20 VCC C1 RFMAIN TAPMAIN C3 C2 GND VCC VCC C4 GND VCC VCC C5 GND C6 C7 TAPDIV RFDIV RF DIV INPUT C17 28 N.C.
PAGE 11
Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch The IF output impedance is 200Ω (differential). For evaluation, an external low-loss 4:1 (impedance ratio) balun transforms this impedance down to a 50Ω singleended output (see the Typical Application Circuit). A two-stage internal LO buffer allows a wide input power range for the LO drive. All guaranteed specifications are for an LO signal power from -3dBm to +3dBm.
PAGE 12
Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) QFN THIN 6x6x0.8.EPS MAX9995 Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch D2 D CL D/2 b D2/2 k E/2 E2/2 (NE-1) X e E CL E2 k e L (ND-1) X e e L CL CL L1 L L e A1 A2 e A PACKAGE OUTLINE 36, 40, 48L THIN QFN, 6x6x0.
PAGE 13
Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch NOTES: 1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994. 2. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES. 3. N IS THE TOTAL NUMBER OF TERMINALS. 4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO JESD 95-1 SPP-012. DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED.