MAXIM MAX9993 Technical data

MAX9993

High-Linearity 1700MHz to 2200MHz Down-

Conversion Mixer with LO Buffer/Switch

________________________________________________________________ Maxim Integrated Products 1

19-2596; Rev 0; 10/02

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.

General Description

The MAX9993 high-linearity down-conversion mixer
provides 8.5dB of gain, +23.5dBm IIP3, and 9.5dB NF
for UMTS, DCS, and PCS base-station applications.

The MAX9993 integrates baluns in the RF and LO ports,
a dual-input LO selectable switch, an LO buffer, a dou­ble-balanced mixer, and a differential IF output amplifi­er. The MAX9993 requires a typical LO drive of +3dBm,
and supply current is guaranteed to below 230mA.

The MAX9993 is available in a compact 20-pin thin
QFN package (5mm ✕5mm) with an exposed pad.
Electrical performance is guaranteed over the extended

-40°C to +85°C temperature range.

The MAX9993 EV kit is available; contact the factory for
more information.

Applications

UMTS and 3G Base Stations

DCS1800 and EDGE Base Stations

PCS1900 Base Stations

Point-to-Point Microwave Systems

Wireless Local Loop

Private Mobile Radio

Military Systems

Features

♦ +23.5dBm Input IIP3

♦ 1700MHz to 2200MHz RF Frequency Range

♦ 40MHz to 350MHz IF Frequency Range

♦ 1400MHz to 2000MHz LO Frequency Range

♦ 8.5dB Conversion Gain

♦ 9.5dB Noise Figure

♦ Integrated LO Buffer

♦ Switch-Selectable (SPDT), Two LO Inputs

♦ Low 0 to +6dBm LO Drive

♦ 40dB LO1-to-LO2 Isolation

Ordering Information

*EP = Exposed pad.

20

19

18

17

16

13

12

11

14

15

4

3

2

1

5

6

7

8

9

10

TOP VIEW

THIN QFN

V

CC

RF

TAP

GND

V

CC

LOBIAS

LO1

GND

GND

LO2

LOSEL

LEXT

IFBIAS

IF+

IF-

GND

V

CC

GND

GND

GND

MAX9993

Pin Configuration/Functional Diagram

PART TEMP RANGE PIN-PACKAGE

MAX9993ETP-T -40°C to 85°C 20 Thin QFN-EP*

MAX9993

High-Linearity 1700MHz to 2200MHz Down­Conversion Mixer with LO Buffer/Switch

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

VCC..........................................................................-0.3V to 5.5V

RF (RF is DC shorted to GND through balun).....................50mA

LO1, LO2 to GND ...............................................................±0.3V

TAP, IF+, IF- to GND ..................................-0.3V to (V

CC

+ 0.3V)

LOSEL to GND ................................-0.3V to (V

CC

(pin 8) + 0.3V)

LOBIAS, IFBIAS, LEXT to GND ..................-0.3V to (V

CC

+ 0.3V)

RF and LO Input Power ..................................................+22dBm

Continuous Power Dissipation (T

A

= +70°C)
20-Lead Thin QFN
(derate 30.3mW/°C above T

A

= +70°C) ....................2200mW

θ

JA

....................................................................................33°C/W

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

DC ELECTRICAL CHARACTERISTICS

(Typical Operating Circuit as shown, no input RF or LO signals applied. VCC= 4.75V to 5.25V, TA= -40°C to +85°C. Typical values are
at V

CC

= 5.0V and TA= +25°C, unless otherwise noted.)

AC ELECTRICAL CHARACTERISTICS

(Typical Operating Circuit, 4.75V < VCC< 5.75V, -40°C < TA< +85°, RF and LO ports are driven from 50Ω sources, 0dBm < PLO<
+6dBm, P

RF

= -5dBm, 1700MHz < fRF< 2200MHz, 1400MHz < fLO< 2000MHz, fIF= 200MHz. Typical values are for TA= +25°C

V

CC

= 5.0V, PLO= +3dBm, fRF= 1900MHz, fLO= 1700MHz, 200MHz IF.) (Notes 1, 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V

LOSEL Input High Voltage V

LOSEL Input Low Voltage V

LOSEL Input Current IIL and I

CC

CC

Total supply current 202 230

VCC (pin 8) 87 105Supply Current I

IF+/IF- (total of both) 103 133

IH

IL

IH

4.75 5.00 5.25 V

2.0 V

0.8 V

-5 +5 µA

mA

RF Frequency f

LO Frequency f

IF Frequency f

Conversion Gain G

Gain Variation Over Temperature TA = -40°C to +85°C 0.0012 dB/°C

Gain Variation from Nominal (3σ) 0.45 dB

Input Compression Point P

Input Third-Order Intercept Point
(Note 3)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

RF

LO

IF

1dB

IIP3

(Note 6) 1400 2000 MHz

(Note 3) 8.5 dB

C

Two RF tones: -5dBm each at 1950MHz
and 1951MHz, LO: +3dBm at 1750MHz

Two RF tones: -5dBm each at 2200MHz
and 2201MHz, LO: +3dBm at 2000MHz

1700 2200 MHz

50 350 MHz

12.6 dBm

24

dBm

23

MAX9993

High-Linearity 1700MHz to 2200MHz Down-

Conversion Mixer with LO Buffer/Switch

_______________________________________________________________________________________ 3

AC ELECTRICAL CHARACTERISTICS (continued)

(Typical Operating Circuit, 4.75V < VCC< 5.75V, -40°C < TA< +85°, RF and LO ports are driven from 50Ω sources, 0dBm < PLO<
+6dBm, P

RF

= -5dBm, 1700MHz < fRF< 2200MHz, 1400MHz < fLO< 2000MHz, fIF= 200MHz. Typical values are for TA= +25°C

V

CC

= 5.0V, PLO= +3dBm, fRF= 1900MHz, fLO= 1700MHz, 200MHz IF.) (Notes 1, 2)

Note 1: Guaranteed by design and characterization.
Note 2: All limits reflect losses of external components. Output measurements taken at IFOUT of the Typical Application Circuit.
Note 3: Production tested.
Note 4: Measured at IF port at IF frequency. f

LO1

and f

LO2

are offset by 1MHz, P

LO1

= P

LO2

= +3dBm.

Note 5: IF return loss can be optimized by external matching components.
Note 6: Operation outside this range is possible, but with degraded performance of some specifications.

IIP3 Variation Over Temperature TA = -40°C to +85°C ±0.5 dB

Noise Figure NF

Required LO Drive P

Spurious Response at IF

Maximum LO-to-RF Leakage

Maximum LO-to-IF Leakage

Minimum RF-to-IF Isolation fRF = 1700MHz to 2200MHz 37 dB

Conversion Loss, LO to IF

LO Switching Time

LO1-to-LO2 Isolation (Note 4) 40 dB

RF Return Loss 19 dB

LO Return Loss

IF Return Loss RF terminated, PLO = +3dBm (Note 5) 15 dB

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

f

= 1950MHz, fLO = 1750MHz,

LO

2 ✕ 2

3

✕ 3

RF

measured single-side band

0 3 6 dBm

2 RF - 2 LO

= -5dBm

P

RF

f

= 1950MHz

RF

= 1750MHz

f

LO

f

= 1850MHz

SPUR

3 RF - 3 LO
P

= -5dBm

RF

= 1950MHz

f

RF

f

= 1750MHz

LO

= 1816.66MHz

f

SPUR

P

= 0dBm to +6dBm,

LO

= 1400MHz to 2000MHz

f

LO

P

= 0dBm to +6dBm,

LO

= 1400MHz to 2000MHz

f

LO

P

= +0dBm, inject -20dBm at 200MHz

LO

into LO port, measure 200MHz at IF

50% of LOSEL to IF settled to within
2 degrees

LO port selected 15

LO port unselected 14

PLO = +3dBm 65

= +6dBm 70

P

LO

PLO = +3dBm 67

P

= +6dBm 68

LO

9.5 dB

dBc

-19 dBm

-21 dBm

28 dB

<50 ns

dB

MAX9993

High-Linearity 1700MHz to 2200MHz Down­Conversion Mixer with LO Buffer/Switch

4 _______________________________________________________________________________________

Typical Operating Characteristics

(MAX9993 EV Kit, VCC= 5.0V, PRF= -5dBm, PLO= +3dBm, LO is low-side injected for a 200MHz IF, TA= +25°C. For high-side LO
injection curves, LO frequency is beyond maximum specified range, and is shown for completeness.)

INPUT IP3 vs. RF FREQUENCY

LOW-SIDE INJECTION

MAX9993-09

RF FREQUENCY (MHz)

INPUT IP3 (dBm)

22

23

24

25

26

21

TA = +85°C

TA = +25°C

TA = -40°C

2150210020502000195019001850180017501700 2200

2 LO - 2 RF RESPONSE vs. RF FREQUENCY

HIGH-SIDE INJECTION

MAX9993-08

2 LO - 2 RF RESPONSE (dBc)

50

55

60

65

70

75

80

85

45

RF FREQUENCY (MHz)

2150210020502000195019001850180017501700 2200

TA = -40°C

TA = +25°C

TA = +85°C

PRF = -5dBm

2 RF - 2 LO RESPONSE vs. RF FREQUENCY

LOW-SIDE INJECTION

MAX9993-07

2 RF- 2 LO RESPONSE (dBc)

50

55

60

65

70

75

80

85

45

RF FREQUENCY (MHz)

2150210020502000195019001850180017501700 2200

VCC = 5.25V

VCC = 4.75V, 5.0V

PRF = -5dBm

2 RF - 2 LO RESPONSE vs. RF FREQUENCY

LOW-SIDE INJECTION

MAX9993-06

2 RF- 2 LO RESPONSE (dBc)

50

55

60

65

70

75

80

85

45

RF FREQUENCY (MHz)

2150210020502000195019001850180017501700 2200

PLO = +6dBm

PLO = +3dBm

PLO = 0dBm

PRF = -5dBm

2 RF - 2 LO RESPONSE vs. RF FREQUENCY

LOW-SIDE INJECTION

MAX9993-05

2 RF- 2 LO RESPONSE (dBc)

50

55

60

65

70

75

80

85

45

RF FREQUENCY (MHz)

2150210020502000195019001850180017501700 2200

TA = +85°C

TA = -40°C

TA = +25°C

PRF = -5dBm

CONVERSION GAIN vs. RF FREQUENCY

HIGH-SIDE INJECTION

MAX9993-04

RF FREQUENCY (MHz)

CONVERSION GAIN (dB)

7

8

9

10

11

6

TA = +85°C

TA = +25°C

TA = -40°C

2150210020502000195019001850180017501700 2200

CONVERSION GAIN vs. RF FREQUENCY

LOW-SIDE INJECTION

MAX9993-03

RF FREQUENCY (MHz)

CONVERSION GAIN (dB)

7

8

9

10

11

6

VCC = 4.75V, 5.0V, 5.25V

2150210020502000195019001850180017501700 2200

CONVERSION GAIN vs. RF FREQUENCY

LOW-SIDE INJECTION

MAX9993-02

RF FREQUENCY (MHz)

CONVERSION GAIN (dB)

7

8

9

10

11

6

PLO = 0dBm, +3dBm, +6dBm

2150210020502000195019001850180017501700 2200

CONVERSION GAIN vs. RF FREQUENCY

LOW-SIDE INJECTION

MAX9993-01

RF FREQUENCY (MHz)

CONVERSION GAIN (dB)

7

8

9

10

11

6

TA = +85°C

TA = +25°C

TA = -40°C

2150210020502000195019001850180017501700 2200