ANALOG DEVICES ADG 918 BRMZ Datasheet

Wideband 4 GHz, 43 dB Isolation at 1 GHz,

CMOS 1.65 V to 2.75 V, 2:1 Mux/SPDT

ADG918/ADG919

Rev. D Document Feedback

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FREQUENCY (Hz)

10k 100k

1M 10M 100M 1G 10G

–100

–90

–70

–60

–50

–40

–30

–80

–20

–10

0

ISOLATION (dB)

S21

VDD = 2.5V
TA = 25°C

S12

03335-003

RF2

RF1

CTRL

ADG918

RFC

50Ω

50Ω

ADG919

RF2

RF1

CTRL

RFC

03335-001

FREQUENC

Y (Hz)

10k 100k 1M

10M 100M

1G 10G

–3.2

–2.8

–2.6

–2.4

–2.2

–1.8

–1.6

–1.4

–1.2

–1.0

–2.0

–3.0

–0.8

–0.6

–0.4

INSERTION LOSS (dB)

V

DD

= 2.5V

T

A

= 25°C

03335-004

Data Sheet

FEATURES

Wideband switch: −3 dB at 4 GHz
Absorptive/reflective switches
High off isolation (43 dB at 1 GHz)
Low insertion loss (0.8 dB at 1 GHz)
Single 1.65 V to 2.75 V power supply
CMOS/LVTTL control logic
8-lead MSOP and tiny 3 mm × 3 mm LFCSP
Low power consumption (<1 µA)

APPLICATIONS

Wireless communications
General-purpose RF switching
Dual-band applications
High speed filter selection
Digital transceiver front end switch
IF switching
Tuner modules

Antenna diversity switching

GENERAL DESCRIPTION

The ADG918/ADG919 are wideband switches using a CMOS
process to provide high isolation and low insertion loss to
1 GHz. The ADG918 is an absorptive (matched) switch having
50 Ω terminated shunt legs, whereas the ADG919 is a reflective
switch. These devices are designed such that the isolation is
high over the dc to 1 GHz frequency range. They have on-board
CMOS control logic, thus eliminating the need for external
controlling circuitry. The control inputs are both CMOS and
LVTTL compatible. The low power consumption of these
CMOS devices makes them ideally suited to wireless and
general-purpose high frequency switching applications.

FUNCTIONAL BLOCK DIAGRAMS

Figure 2.

PRODUCT HIGHLIGHTS

1. −43 dB off isolation at 1 GHz.

2. 0.8 dB insertion loss at 1 GHz.

3. Tiny 8-lead MSOP/LFCSP.

Figure 1. Off Isolation vs. Frequency

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

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Figure 3. Insertion Loss vs. Frequency

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Tel: [phone] ©2003–2016 Analog Devices, Inc. All rights reserved.

ADG918/ADG919 Data Sheet

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications ....................................................................................... 1

Functional Block Diagrams ............................................................. 1

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

Product Highlights ........................................................................... 1

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

Specifications ..................................................................................... 3

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

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

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

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

REVISION HISTORY

3/16—Rev. C t o R e v. D

Changed CP-8-2 to CP-8-13 ........................................ Throughout

Changes to Figure 4 and Table 3 ..................................................... 6

Added Figure 5, Renumbered Sequentially .................................. 6

Changed ADG9xx Evaluation Board Section to ADG918/

ADG919 Evaluation Board Section ............................................. 14

Updated Outline Dimensions ....................................................... 15

Changes to Ordering Guide .......................................................... 16

9/08—Rev. B to R e v. C

Changes to Ordering Guide .......................................................... 16

8/08—Rev. A to Re v. B

Changes to Table 1, AC Electrical Characteristics, Third Order

Intermodulation Intercept ............................................................... 3

Updated Outline Dimensions ....................................................... 15

Changes to Ordering Guide .......................................................... 16

Terminology .................................................................................... 10

Test Circuits ..................................................................................... 11

Applications Information .............................................................. 13

Absorptive vs. Reflective Switch ............................................... 13

Wireless Metering....................................................................... 13

Tuner Modules ............................................................................ 13

Filter Selection ............................................................................ 13

ADG918/ADG919 Evaluation Board .......................................... 14

Outline Dimensions ....................................................................... 15

Ordering Guide .......................................................................... 16

9/04—Rev. 0 t o R e v. A

Updated Format .................................................................. Universal

Change to Data Sheet Title ............................................................... 1

Change to Features ............................................................................ 1

Change to Product Highlights ......................................................... 1

Changes to Specifications ................................................................. 3

Change to ADG9xx Evaluation Board section ........................... 13

Changes to Ordering Guide .......................................................... 14

8/03—Revision 0: Initial Version

Rev. D | Page 2 of 16

Data Sheet ADG918/ADG919

(CP Package)

500 MHz

46

49 dB

(CP Package)

500 MHz

41

44

On Switching Time3

tON

50% CTRL to 90% RF

6.6

10

ns

Video Feedthrough4

2.5 mV p-p

SPECIFICATIONS

VDD = 1.65 V to 2.75 V, GND = 0 V, input power = 0 dBm, all specifications T
B Version: −40°C to +85°C.

Table 1.

B Version
Parameter Symbol Test Conditions/Comments Min Typ1 Max Unit

AC ELECTRICAL CHARACTERISTICS

Operating Frequency2 dc 2 GHz
3 dB Frequency3 4 GHz
Input Power3 0 V dc bias 7 dBm

0.5 V dc bias 16 dBm
Insertion Loss S21, S12 DC to 100 MHz; VDD = 2.5 V ± 10% 0.4 0.7 dB
500 MHz; VDD = 2.5 V ± 10% 0.5 0.8 dB
1000 MHz; VDD = 2.5 V ± 10% 0.8 1.25 dB
Isolation—RFC to RF1/RF2 S21, S12 100 MHz 57 60 dB

1000 MHz 36 43 dB
Isolation—RFC to RF1/RF2 S21, S12 100 MHz 55 60 dB

(RM Package) 500 MHz 43 47 dB
1000 MHz 34 37 dB
Isolation—RF1 to RF2 (Crosstalk) S21, S12 100 MHz 55 58

MIN

to T

, unless otherwise noted. Temperature range for

MAX

1000 MHz 31 37
Isolation—RF1 to RF2 (Crosstalk) S21, S12 100 MHz 54 57

(RM Package) 500 MHz 39 42
1000 MHz 31 33
Return Loss (On Channel)3 S11, S22 DC to 100 MHz 21 27 dB
500 MHz 22 27 dB
1000 MHz 22 26 dB
Return Loss (Off Channel)3 S11, S22 DC to 100 MHz 18 23 dB

ADG918 500 MHz 17 21 dB

1000 MHz 16 20 dB

Off Switching Time3 t
Rise Time3 t
Fall Time3 t
1 dB Compression3 P

50% CTRL to 10% RF 6.5 9.5 ns

OFF

10% to 90% RF 6.1 9 ns

RISE

90% to 10% RF 6.1 9 ns

FAL L

1000 MHz 17 dBm

–1 dB

Third Order Intermodulation Intercept IP3 900 MHz/901 MHz, 4 dBm 28.5 36 dBm

DC ELECTRICAL CHARACTERISTICS

Input High Voltage V
V
Input Low Voltage V
V

VDD = 2.25 V to 2.75 V 1.7 V

INH

VDD = 1.65 V to 1.95 V 0.65 VCC V

INH

VDD = 2.25 V to 2.75 V 0.7 V

INL

VDD = 1.65 V to 1.95 V 0.35 VCC V

INL

Input Leakage Current II 0 V ≤ VIN ≤ 2.75 V ± 0.1 ± 1 µA

Rev. D | Page 3 of 16

ADG918/ADG919 Data Sheet

B Version
Parameter Symbol Test Conditions/Comments Min Typ1 Max Unit

CAPACITANCE3

RF On Capacitance CRF ON f = 1 MHz 1.6 pF
CTRL Input Capacitance C

POWER REQUIREMENTS

VDD 1.65 2.75 V
Quiescent Power Supply Current IDD Digital inputs = 0 V or VDD 0.1 1 µA

1

Typical values are at VDD = 2.5 V and 25°C, unless otherwise stated.

2

Point at which insertion loss degrades by 1 dB.

3

Guaranteed by design, not subject to production test.

4

The dc transience at the output of any port of the switch when the control voltage is switched from high to low or low to high in a 50 Ω test setup, measured with 1 ns

rise time pulses and 500 MHz bandwidth.

f = 1 MHz 2 pF

CTRL

Rev. D | Page 4 of 16

Data Sheet ADG918/ADG919

Inputs to GND

−0.5 V to VDD + 0.3 V

Storage Temperature Range

−65°C to +150°C

4-Layer Board

48°C/W

ABSOLUTE MAXIMUM RATINGS

TA = 25°C, unless otherwise noted.

Table 2.

Parameter Rating

VDD to GND −0.5 V to +4 V

Continuous Current 30 mA
Input Power 18 dBm
Operating Temperature Range

Industrial (B Version) −40°C to +85°C

Junction Temperature 150°C
θJA Thermal Impedance

MSOP 206°C/W
LFCSP

2-Layer Board 84°C/W

Lead Temperature, Soldering (10 sec) 300°C
IR Reflow, Peak Temperature (<20 sec) 235°C
ESD 1 kV

1

RF1 and RF2 off port inputs to ground: −0.5 V to VDD – 0.5 V.

1

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

ESD CAUTION

Rev. D | Page 5 of 16