Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsLinear ICsMAX9986ETP+

General Description

The MAX9986 high-linearity downconversion mixer pro-

vides 10dB gain, +23.6dBm IIP3, and 9.3dB NF for

815MHz to 995MHz base-station receiver applications.

With a 960MHz to 1180MHz LO frequency range, this

particular mixer is ideal for high-side LO injection

receiver architectures. Low-side LO injection is sup-

ported by the MAX9984, which is pin-for-pin and func-

tionally compatible with the MAX9986.

In addition to offering excellent linearity and noise perfor-

mance, the MAX9986 also yields a high level of compo-

nent integration. This device includes a double-balanced

passive mixer core, an IF amplifier, a dual-input LO selec-

table switch, and an LO buffer. On-chip baluns are also

integrated to allow for single-ended RF and LO inputs.

The MAX9986 requires a nominal LO drive of 0dBm, and

supply current is guaranteed to be below 265mA.

The MAX9984/MAX9986 are pin compatible with the

MAX9994/MAX9996 1700MHz to 2200MHz mixers,

making this entire family of downconverters ideal for

applications where a common PC board layout is used

for both frequency bands. The MAX9986 is also func-

tionally compatible with the MAX9993.

The MAX9986 is available in a compact, 20-pin, thin

QFN package (5mm x 5mm) with an exposed paddle.

Electrical performance is guaranteed over the extended

-40°C to +85°C temperature range.

Applications

850MHz W-CDMA Base Stations

GSM 850/GSM 900 2G and 2.5G EDGE Base

Stations

cdmaOne™ and cdma2000

Base Stations

iDEN

Base Stations

Predistortion Receivers

Fixed Broadband Wireless Access

Wireless Local Loop

Private Mobile Radios

Military Systems

Microwave Links

Digital and Spread-Spectrum Communication

Systems

Features

♦ 815MHz to 995MHz RF Frequency Range

♦ 960MHz to 1180MHz LO Frequency Range

(MAX9986)

♦ 570MHz to 850MHz LO Frequency Range

(MAX9984)

♦ 50MHz to 250MHz IF Frequency Range

♦ 10dB Conversion Gain

♦ +23.6dBm Input IP3

♦ +12dBm Input 1dB Compression Point

♦ 9.3dB Noise Figure

♦ 67dBc 2LO-2RF Spurious Rejection at

= -10dBm

♦ Integrated LO Buffer

♦ Integrated RF and LO Baluns for Single-Ended

Inputs

♦ Low -3dBm to +3dBm LO Drive

♦ Built-In SPDT LO Switch with 49dB LO1 to LO2

Isolation and 50ns Switching Time

♦ Pin Compatible with MAX9994/MAX9996 1700MHz

to 2200MHz Mixers

♦ Functionally Compatible with MAX9993

♦ External Current-Setting Resistors Provide Option

for Operating Mixer in Reduced Power/Reduced

Performance Mode

♦ Lead-Free Package Available

MAX9986

SiGe High-Linearity, 815MHz to 995MHz

Downconversion Mixer with LO Buffer/Switch

________________________________________________________________ Maxim Integrated Products 1

Pin Configuration/Functional Diagram and Typical

Application Circuit appear at end of data sheet.

19-3605; Rev 0; 2/05

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.

EVALUATION KIT

AVAILABLE

Ordering Information

*EP = Exposed paddle.

+ = Lead free. D = Dry pack. T = Tape-and-reel.

PART

TEMP RANGE

PIN-PACKAGE

PKG

CODE

MAX9986ETP

- 40° C to + 85° C

20 Thi n QFN - E P *

5m m × 5m m

T2055- 3

MAX9986ETP-T

- 40° C to + 85° C

20 Thi n QFN - E P *

5m m × 5m m

T2055- 3

MAX9986ETP+D

- 40° C to + 85° C

20 Thi n QFN - E P *

5m m × 5m m

T2055- 3

M AX 9986E TP + TD

- 40° C to + 85° C

20 Thi n QFN - E P *

5m m × 5m m

T2055- 3

cdma2000 is a registered trademark of the Telecommunications

Industry Association.

cdmaOne is a trademark of CDMA Development Group.

iDEN is a registered trademark of Motorola, Inc.

Summary of content (12 pages)

PAGE 1
KIT ATION EVALU E L B A IL AVA 19-3605; Rev 0; 2/05 SiGe High-Linearity, 815MHz to 995MHz Downconversion Mixer with LO Buffer/Switch Features The MAX9986 high-linearity downconversion mixer provides 10dB gain, +23.6dBm IIP3, and 9.3dB NF for 815MHz to 995MHz base-station receiver applications. With a 960MHz to 1180MHz LO frequency range, this particular mixer is ideal for high-side LO injection receiver architectures.
PAGE 2
MAX9986 SiGe High-Linearity, 815MHz to 995MHz Downconversion Mixer with LO Buffer/Switch ABSOLUTE MAXIMUM RATINGS VCC to GND ...........................................................-0.3V to +5.5V IF+, IF-, LOBIAS, LOSEL, IFBIAS to GND...-0.3V to (VCC + 0.3V) TAP ........................................................................-0.3V to +1.4V LO1, LO2, LEXT to GND........................................-0.3V to +0.3V RF, LO1, LO2 Input Power .............................................
PAGE 3
SiGe High-Linearity, 815MHz to 995MHz Downconversion Mixer with LO Buffer/Switch (MAX9986 Typical Application Circuit, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources, +3dBm, PRF = -5dBm, fRF = 815MHz to 995MHz, fLO = 960MHz to 1180MHz, fIF = 160MHz, fLO > fRF, TC = -40°C otherwise noted. Typical values are at VCC = +5V, PRF = -5dBm, PLO = 0dBm, fRF = 910MHz, fLO = 1070MHz, fIF +25°C, unless otherwise noted.
PAGE 4
Typical Operating Characteristics (MAX9986 Typical Application Circuit, VCC = +5.0V, PLO = 0dBm, PRF = -5dBm, fLO > fRF, fIF = 160MHz, unless otherwise noted.) 10 9 TC = +25°C TC = +85°C 8 10 PLO = -3dBm, 0dBm, +3dBm 9 7 740 790 840 890 940 990 1040 MAX9986 toc03 VCC = 4.75V, 5.0V, 5.25V 790 840 890 940 990 740 1040 790 840 RF FREQUENCY (MHz) INPUT IP3 vs. RF FREQUENCY INPUT IP3 vs. RF FREQUENCY 25 24 TC = +25°C VCC = 4.
PAGE 5
SiGe High-Linearity, 815MHz to 995MHz Downconversion Mixer with LO Buffer/Switch 2LO-2RF RESPONSE vs. RF FREQUENCY 60 TC = +25°C 55 65 PLO = -3dBm 60 55 790 840 890 940 990 790 3LO-3RF RESPONSE vs. RF FREQUENCY TC = +25°C 80 75 70 TC = -25°C 65 940 990 1040 740 55 940 990 85 80 75 70 PLO = -3dBm, 0dBm, +3dBm 65 1040 PRF = -5dBm 790 840 890 940 990 TC = -25°C 9 8 840 890 940 RF FREQUENCY (MHz) VCC = 4.75V, 5.0V, 5.
PAGE 6
Typical Operating Characteristics (continued) (MAX9986 Typical Application Circuit, VCC = +5.0V, PLO = 0dBm, PRF = -5dBm, fLO > fRF, fIF = 160MHz, unless otherwise noted.) LO SWITCH ISOLATION vs. LO FREQUENCY 55 TC = -40°C, -25°C 50 45 TC = +85°C 55 50 PLO = -3dBm, 0dBm, +3dBm 45 60 MAX9986 toc21 MAX9986 toc20 60 LO SWITCH ISOLATION (dB) MAX9986 toc19 LO SWITCH ISOLATION (dB) 60 LO SWITCH ISOLATION vs. LO FREQUENCY LO SWITCH ISOLATION (dB) LO SWITCH ISOLATION vs.
PAGE 7
SiGe High-Linearity, 815MHz to 995MHz Downconversion Mixer with LO Buffer/Switch RF-TO-IF ISOLATION vs. RF FREQUENCY 45 40 TC = -40°C, -25°C 35 45 PLO = +3dBm 40 35 30 790 840 890 940 990 1040 40 30 740 790 840 890 940 990 1040 740 790 840 890 940 990 RF FREQUENCY (MHz) RF FREQUENCY (MHz) RF PORT RETURN LOSS vs. RF FREQUENCY IF PORT RETURN LOSS vs. IF FREQUENCY LO SELECTED RETURN LOSS vs. LO FREQUENCY 15 20 25 30 35 10 15 20 25 30 VCC = 4.75V, 5.0V, 5.
PAGE 8
SiGe High-Linearity, 815MHz to 995MHz Downconversion Mixer with LO Buffer/Switch MAX9986 Pin Description PIN NAME FUNCTION Power-Supply Connection. Bypass each VCC pin to GND with capacitors as shown in the Typical Application Circuit. 1, 6, 8, 14 VCC 2 RF Single-Ended 50Ω RF Input. This port is internally matched and DC shorted to GND through a balun. Requires an external DC-blocking capacitor. 3 TAP Center Tap of the Internal RF Balun.
PAGE 9
SiGe High-Linearity, 815MHz to 995MHz Downconversion Mixer with LO Buffer/Switch optimize the performance for a particular frequency band. Since approximately 140mA flows through this inductor, it is important to use a low-DCR wire-wound coil. If the LO-to-IF and RF-to-IF leakage are not critical parameters, the inductor can be replaced by a short circuit to ground. High-Linearity Mixer A properly designed PC board is an essential part of any RF/microwave circuit.
PAGE 10
Table 1. Component List Referring to the Typical Application Circuit COMPONENT VALUE DESCRIPTION L1, L2 330nH Wire-wound high-Q inductors (0805) L3 30nH Wire-wound high-Q inductor (0603) Microwave capacitor (0603) C1 10pF C2, C4, C7, C8, C10, C11, C12 82pF Microwave capacitors (0603) C3, C5, C6, C9, C13, C14 0.01µF Microwave capacitors (0603) C15 220pF Microwave capacitor (0402) R1 953Ω ±1% resistor (0603) R2 619Ω ±1% resistor (0603) R3 3.
PAGE 11
SiGe High-Linearity, 815MHz to 995MHz Downconversion Mixer with LO Buffer/Switch VCC T1 3 IF OUTPUT 6 R3 L1 2 L2 C14 C3 C2 GND IF- IF+ 19 20 VCC 18 17 RF C5 TAP C4 GND 16 C12 1 15 C1 RF INPUT 4 L3 IFBIAS VCC 1 C15 R1 LEXT C13 MAX9986 2 14 3 13 4 12 LO2 LO2 INPUT VCC VCC C11 GND GND C10 5 11 LOSEL LOBIAS VCC 9 LO1 LO1 INPUT 10 GND 8 7 6 VCC GND R2 VCC C6 LOSEL INPUT C7 C8 VCC C9 _____________________________________________________________________
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.EPS MAX9986 SiGe High-Linearity, 815MHz to 995MHz Downconversion Mixer with LO Buffer/Switch D2 D MARKING b C L 0.10 M C A B D2/2 D/2 k L XXXXX E/2 E2/2 C L (NE-1) X e E DETAIL A PIN # 1 I.D. E2 PIN # 1 I.D. 0.35x45° e/2 e (ND-1) X e DETAIL B e L1 L C L C L L L e e 0.10 C A C 0.