ANALOG DEVICES ADL5365 Service Manual

1200 MHz to 2500 MHz Balanced Mixer,

V

FEATURES

RF frequency range of 1200 MHz to 2500 MHz
IF frequency range of dc to 450 MHz
Power conversion loss: 7.3 dB
SSB noise figure of 8.3 dB
SSB noise figure with 5 dBm blocker of 18.5 dB
Input IP3 of 36 dBm
Typical LO drive of 0 dBm
Single-ended, 50 Ω RF and LO input ports
High isolation SPDT LO input switch
Single-supply operation: 3.3 V to 5 V
Exposed paddle 5 mm × 5 mm, 20-lead LFCSP
1500 V HBM/500 V FICDM ESD performance

APPLICATIONS

Cellular base station receivers
Transmit observation receivers
Radio link downconverters

GENERAL DESCRIPTION

The ADL5365 uses a highly linear, doubly balanced passive
mixer core along with integrated RF and LO balancing circuitry
to allow for single-ended operation. The ADL5365 incorporates
an RF balun, allowing for optimal performance over a 1200 MHz
to 2500 MHz RF input frequency range using high-side LO
injection for RF frequencies from 1700 MHz to 2500 MHz and
low-side injection for frequencies from 1200 MHz to 1700 MHz.
The balanced passive mixer arrangement provides good LO-to­RF leakage, typically better than −30 dBm, and excellent inter­modulation performance. The balanced mixer core also provides
extremely high input linearity, allowing the device to be used in
demanding cellular applications where in-band blocking signals
may otherwise result in the degradation of dynamic performance.

LO Buffer and RF Balun

ADL5365

FUNCTIONAL BLOCK DIAGRAM

CMI IFOP IFON PWDN COMM

20 19 18 17 16

1

VPMX

2

RFIN

3

RFCT

BIAS

GENERATOR

4

COMM

5

COMM

6 7 8 9 10

VLO3 LGM3 VLO2 LOSW NC

NC = NO CONNECT

Figure 1.

The ADL5365 provides two switched LO paths that can be
used in TDD applications where it is desirable to rapidly switch
between two local oscillators. LO current can be externally set
using a resistor to minimize dc current commensurate with the
desired level of performance. For low voltage applications, the
ADL5365 is capable of operation at voltages down to 3.3 V with
substantially reduced current. Under low voltage operation, an
additional logic pin is provided to power down (<200 μA) the
circuit when desired.

The ADL5365 is fabricated using a BiCMOS high performance
IC process. The device is available in a 5 mm × 5 mm, 20-lead
LFCSP and operates over a −40°C to +85°C temperature range.
An evaluation board is also available.

ADL5365

15

LOI2

14

VPSW

13

VGS1

12

VGS0

11

LOI1

8082-001

Table 1. Passive Mixers

RF Frequency
(MHz)

Single
Mixer

Single Mixer +
IF Amp

Dual Mixer +
IF Amp

500 to 1700 ADL5367 ADL5357 ADL5358
1200 to 2500 ADL5365 ADL5355 ADL5356

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] ©2009 Analog Devices, Inc. All rights reserved.

ADL5365

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications ....................................................................................... 1 

General Description ......................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 2

Specifications ..................................................................................... 3

5 V Performance ........................................................................... 4

3.3 V Performance ........................................................................ 4

Absolute Maximum Ratings ............................................................ 5

ESD Caution .................................................................................. 5

Pin Configuration and Function Descriptions ............................. 6

Typical Performance Characteristics ............................................. 7

5 V Performance ........................................................................... 7

3.3 V Performance ...................................................................... 14

Upconversion .............................................................................. 15

Spurious Performance ............................................................... 16

Circuit Description......................................................................... 17

RF Subsystem .............................................................................. 17

LO Subsystem ............................................................................. 17

Applications Information .............................................................. 19

Basic Connections ...................................................................... 19

IF Port .......................................................................................... 19

Bias Resistor Selection ............................................................... 19

Mixer VGS Control DAC .......................................................... 19

Evaluation Board ............................................................................ 20

Outline Dimensions ....................................................................... 23

Ordering Guide .......................................................................... 23

REVISION HISTORY

10/09—Revision 0: Initial Version

Rev. 0 | Page 2 of 24

ADL5365

SPECIFICATIONS

VS = 5 V, IS = 95 mA, TA = 25°C, fRF = 1900 MHz, fLO = 1697 MHz, LO power = 0 dBm, ZO = 50 Ω, unless otherwise noted.

Table 2.

Parameter Test Conditions/Comments Min Typ Max Unit

RF INPUT INTERFACE

Return Loss Tunable to >20 dB over a limited bandwidth 16 dB
Input Impedance 50 Ω
RF Frequency Range 1500 2700 MHz

OUTPUT INTERFACE

Output Impedance Differential impedance, f = 200 MHz 36||2 Ω||pF
IF Frequency Range dc 450 MHz
DC Bias Voltage1 Externally generated 3.3 5.0 5.5 V

LO INTERFACE

LO Power −6 0 +10 dBm
Return Loss 17 dB
Input Impedance 50 Ω
LO Frequency Range 1230 2470 MHz

POWER-DOWN (PWDN) INTERFACE

PWDN Threshold 1.0 V
Logic 0 Level 0.4 V
Logic 1 Level 1.4 V
PWDN Response Time Device enabled, IF output to 90% of its final level 160 ns
Device disabled, supply current < 5 mA 220 ns
PWDN Input Bias Current Device enabled 0.0 μA

Device disabled 70 μA

1

Apply the supply voltage from the external circuit through the choke inductors.

2

PWDN function is intended for use with VS ≤ 3.6 V only.

2

Rev. 0 | Page 3 of 24

ADL5365

5 V PERFORMANCE

VS = 5 V, IS = 95 mA, TA = 25°C, fRF = 1900 MHz, fLO = 1697 MHz, LO power = 0 dBm, VGS0 = VGS1 = 0 V, and ZO = 50 Ω, unless
otherwise noted.

Table 3.

Parameter Test Conditions\Comments Min Typ Max Unit

DYNAMIC PERFORMANCE

Power Conversion Loss Including 1:1 IF port transformer and PCB loss 6.5 7.3 8.4 dB
Voltage Conversion Loss Z
SSB Noise Figure 8.3 dB
SSB Noise Figure Under Blocking

Input Third-Order Intercept (IIP3)

Input Second-Order Intercept (IIP2)

Input 1 dB Compression Point (IP1dB)1 Exceeding 20 dBm RF power results in damage to the device 25 dBm
LO-to-IF Leakage Unfiltered IF output −18 dBm
LO-to-RF Leakage −33 dBm
RF-to-IF Isolation −50 dBc
IF/2 Spurious 0 dBm input power −65 dBc
IF/3 Spurious 0 dBm input power −71 dBc

POWER SUPPLY

Positive Supply Voltage 4.5 5 5.5 V
Quiescent Current Resistor programmable 95 mA

1

Exceeding 20 dBm RF power results in damage to the device.

= 50 Ω, differential Z

SOURCE

= 50 Ω differential dB

LOAD

5 dBm blocker present ±10 MHz from wanted RF input,
LO source filtered

= 1899.5 MHz, f

f

RF1

= 1900.5 MHz, fLO = 1697MHz,

RF2

each RF tone at 0 dBm

= 1950 MHz, f

f

RF1

= 1900 MHz, fLO = 1697 MHz,

RF2

each RF tone at 0 dBm

18.5 dB

27 36 dBm

67 dBm

3.3 V PERFORMANCE

VS = 3.3 V, IS = 56 mA, TA = 25°C, fRF = 1900 MHz, fLO = 1697 MHz, LO power = 0 dBm, R9 = 226 Ω, VGS0 = VGS1 = 0 V, and ZO = 50 Ω,
unless otherwise noted.

Table 4.

Parameter Test Conditions/Comments Min Typ Max Unit

DYNAMIC PERFORMANCE

Power Conversion Loss Including 1:1 IF port transformer and PCB loss 7.4 dB
Voltage Conversion Loss Z
SSB Noise Figure 8.4 dB
Input Third-Order Intercept (IIP3)

Input Second-Order Intercept (IIP2)

POWER INTERFACE

Supply Voltage 3.0 3.3 3.6 V
Quiescent Current Resistor programmable 56 mA
Power-Down Current Device disabled 150 μA

= 50 Ω, differential Z

SOURCE

= 1899.5 MHz, f

f

RF1

RF2

each RF tone at 0 dBm

= 1950 MHz, f

f

RF1

= 1900 MHz, fLO = 1697 MHz,

RF2

each RF tone at 0 dBm

= 50 Ω differential 7.1 dB

LOAD

= 1900.5 MHz, fLO = 1697 MHz,

32 dBm

58 dBm

Rev. 0 | Page 4 of 24

ADL5365

ABSOLUTE MAXIMUM RATINGS

Table 5.

Parameter Rating

Supply Voltage, VS 5.5 V
RF Input Level 20 dBm
LO Input Level 13 dBm
IFOP, IFON Bias Voltage 6.0 V
VGS0, VGS1, LOSW, PWDN 5.5 V
Internal Power Dissipation 1.2 W
θJA 25°C/W
Maximum Junction Temperature 150°C
Operating Temperature Range −40°C to +85°C
Storage Temperature Range −65°C to +150°C
Lead Temperature Range (Soldering, 60 sec) 260°C

Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.

ESD CAUTION

Rev. 0 | Page 5 of 24

ADL5365

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

DN

IFON

IFOP

VCMI

PW

COMM

17

16

18

19

20

PIN 1
INDICATOR

1VPMX
2RFIN

ADL5365

3RFCT

TOP VIEW

4COMM

(Not to S cale)

5COMM

8

6

7

VLO3

VLO2

LGM3

NOTES

1.2 NC = NO CONNECT.
. EXPOSED PAD. MUST BE SOLDERED

TO GROUND.

Figure 2. Pin Configuration

Table 6. Pin Function Descriptions

Pin No. Mnemonic Description

1 VPMX Positive Supply Voltage.
2 RFIN RF Input. Must be ac-coupled.
3 RFCT RF Balun Center Tap (AC Ground).
4, 5, 16 COMM Device Common (DC Ground).
6, 8 VLO3, VLO2 Positive Supply Voltages for LO Amplifier.
7 LGM3 LO Amplifier Bias Control.
9 LOSW LO Switch. LOI1 selected for 0 V, or LOI2 selected for 3 V.
10 NC No Connect.
11, 15 LOI1, LOI2 LO Inputs. These pins must be ac-coupled.
12, 13 VGS0, VGS1 Mixer Gate Bias Controls. 3 V logic. Ground these pins for nominal setting.
14 VPSW Positive Supply Voltage for LO Switch.
17 PWDN Power-Down. Connect this pin to ground for normal operation or connect this pin to 3.0 V for disable mode.
18, 19 IFON, IFOP Differential IF Outputs.
20 VCMI No Connect. This pin can be grounded.
EPAD (EP) Exposed pad must be soldered to ground.

15 LOI2
14 VPSW
13 VGS1
12 VGS0
11 LOI1

9

10
NC

LOSW

08082-002

Rev. 0 | Page 6 of 24

ADL5365

TYPICAL PERFORMANCE CHARACTERISTICS

5 V PERFORMANCE

VS = 5 V, IS = 95 mA, TA = 25°C, fRF = 1900 MHz, fLO = 1697 MHz, LO power = 0 dBm, RF power = 0 dBm, VGS0 = VGS1 = 0 V, and
Z

= 50 Ω, unless otherwise noted.

O

110

105

100

TA = –40°C

90

TA = +25°C

100

95

90

SUPPLY CURRENT ( mA)

85

80

1700 1750 1800 2150210020502000195019001850 2200

TA = +85°C

TA = –40°C

RF FREQUENCY ( MHz)

TA = +25°C

Figure 3. Supply Current vs. RF Frequency

10

9

8

7

CONVERSION LOSS (dB)

6

5
1700 1750 1800 1850 1900 1950 2000 2050 2100 2150 2200

TA = +85°C

TA = –40°C

RF FREQUENCY ( MHz)

TA = +25°C

Figure 4. Power Conversion Loss vs. RF Frequency

40

38

36

TA = –40°C

80

70

INPUT IP2 (dBm)

60

TA = +85°C

50

40

1700 1750 1800 1850 1900 1950 2000 2050 2100 2150 2200

08082-005

RF FREQUENCY ( MHz)

08082-008

Figure 6. Input IP2 vs. RF Frequency

10.0

9.5

9.0

8.5

8.0

7.5

7.0

6.5

SSB NOISE FIGURE (dB)

6.0

5.5

5.0
1700 1750 1800 1850 1900 1950 2000 2050 2100 2150 2200

08082-014

TA = +85°C

TA = +25°C

TA = –40°C

RF FREQUENCY ( M Hz )

08082-021

Figure 7. SSB Noise Figure vs. RF Frequency

34

32

INPUT IP3 (dBm)

30

28

26

1700 1750 1800 2150210020502000195019001850 2200

TA = +85°C

RF FREQUENCY ( MHz)

Figure 5. Input IP3 vs. RF Frequency

TA = +25°C

08082-011

Rev. 0 | Page 7 of 24

ADL5365

VS = 5 V, IS = 95 mA, TA = 25°C, fRF = 1900 MHz, fLO = 1697 MHz, LO power = 0 dBm, RF power = 0 dBm, VGS0 = VGS1 = 0 V, and
Z

= 50 Ω, unless otherwise noted.

O

110

105

74

72

TA = +85°C

TA = +25°C

100

TA = +85°C

95

90

SUPPLY CURRENT ( mA)

85

80

–40 –20 0 20 40 60 80

TEMPERATURE (°C)

TA = +25°C

TA = –40°C

Figure 8. Supply Current vs. Temperature

10.0

9.5

9.0

8.5

8.0

7.5

7.0

6.5

CONVERSION LOSS (dB)

6.0

5.5

5.0
–40 –20 0 20 40 60 80

TEMPERATURE (°C)

Figure 9. Power Conversion Loss vs. Temperature

40

TA = –40°C

= +25°C

T

A

= +85°C

T

A

08082-015

08082-018

70

68

66

INPUT IP2 (dBm)

64

62

60

–40 –20 0 20 40 60 80

TA = –40°C

TEMPERATURE ( °C)

Figure 11. Input IP2 vs. Temperature

10.0

9.5

9.0

8.5

VPOS = 5.0V

8.0

7.5

7.0

6.5

SSB NOISE F IGURE (dB)

6.5

5.5

5.0
–40–20020406080

VPOS = 4.75V

VPOS = 5.25V

TEMPERATURE ( °C)

Figure 12. SSB Noise Figure vs. Temperature

08082-016

08082-022

38

TA = +85°C

36

TA = –40°C

34

32

INPUT IP3 (dBm)

30

28

26

–40 –20 0 20 40 60 80

TEMPERATURE ( °C)

Figure 10. Input IP3 vs. Temperature

TA = +25°C

08082-017

Rev. 0 | Page 8 of 24