Analog Devices AD8353 Datasheet

100 MHz–2.7 GHz

FEATURES Fixed Gain of 20 dB Operational Frequency of 100 MHz to 2.7 GHz Linear Output Power Up to 9 dBm Input/Output Internally Matched to 50 ⍀ Temperature and Power Supply Stable Noise Figure 5.3 dB Power Supply 3 V or 5 V

APPLICATIONS VCO Buffers General Tx/Rx Amplification Power Amplifier Predriver Low Power Antenna Driver

PRODUCT DESCRIPTION

The AD8353 is a broadband, fixed-gain linear amplifier that operates at frequencies from 100 MHz up to 2.7 GHz. It is intended for use in a wide variety of wireless devices including cellular, broadband, CATV, and LMDS/MMDS applications.

By taking advantage of Analog Devices’ high-performance complementary Si bipolar process, these gain blocks provide excellent stability over process, temperature, and power supply. This amplifier is single-ended and internally matched to 50 Ω with a return loss of greater than 10 dB over the full operating frequency range.

The AD8353 provides linear output power of 9 dBm of gain at 900 MHz when biased at 3 V and an choke is connected between the power supply and the output pin. The dc supply current is 42 mA. At 900 MHz, order intercept (OIP3) is greater than 23 dBm, at 2.7 GHz.

with 20 dB

external RF

the outpu t third

and is 19 dBm

RF Gain Block

AD8353

FUNCTIONAL BLOCK DIAGRAM

BIAS AND VREF

INPT VOUT

COM1

The noise figure is 5.3 dB at 900 MHz. The reverse isolation

) is –36 dB at 900 MHz and –30 dB at 2.7 GHz.

The AD8353 can also operate with a 5 V power supply, in which case no external inductor is required. Under these conditions, the AD8353 delivers 8 dBm with 20 dB of gain at 900 MHz. The dc supply current is 42 mA. At 900 MHz, the OIP3 is greater than 22 dBm and is 19 dBm at 2.7 GHz. The noise figure is 5.6 dB at 900 MHz. The reverse isolation (S

The AD8353 is fabricated on Analog Devices’ proprietary, highperformance 25 GHz Si complementary bipolar IC process. The AD8353 is available in a chip scale package that utilizes an exposed paddle for excellent thermal impedance and low impedance electrical connection to ground. It operates over a –40°C to +85°C temperature range.

An evaluation board is available.

AD8353

VPOS

COM2

) is –35 dB.

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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. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2002

(VS = 3 V, TA = 25ⴗC, 100 nH external inductor between VOUT and VPOS, ZO = 50 ⍀,

AD8353–SPECIFICATIONS

unless otherwise noted.)

Parameters Conditions Min Typ Max Unit

OVERALL FUNCTION

Frequency Range 0.1 2.7 GHz Gain f = 900 MHz 19.8 dB

f = 1.9 GHz 17.7 dB f = 2.7 GHz 15.6 dB

Delta Gain f = 900 MHz, –40°C ⱕ T

f = 1.9 GHz, –40°C ⱕ T f = 2.7 GHz, –40°C ⱕ T

ⱕ +85°C –0.97 dB

ⱕ +85°C –1.15 dB

ⱕ +85°C –1.34 dB

Gain Supply Sensitivity VPOS ± 10%, f = 900 MHz 0.04 dB/V

f = 1.9 GHz –0.004 dB/V f = 2.7 GHz –0.04 dB/V

Reverse Isolation (S

) f = 900 MHz –35.6 dB

f = 1.9 GHz –34.9 dB f = 2.7 GHz –30.3 dB

RF INPUT INTERFACE Pin RFIN

Input Return Loss f = 900 MHz 22.3 dB

f = 1.9 GHz 20.9 dB f = 2.7 GHz 11.2 dB

RF OUTPUT INTERFACE Pin VOUT

Output Compression Point f = 900 MHz, 1 dB compression 9.1 dBm

f = 1.9 GHz 8.4 dBm f = 2.7 GHz 7.6 dBm

Delta Compression Point f = 900 MHz, –40°C ⱕ T

f = 1.9 GHz, –40°C ⱕ T f = 2.7 GHz, –40°C ⱕ T

ⱕ +85°C –1.46 dB

ⱕ +85°C –1.17 dB

ⱕ +85°C–1dB

Output Return Loss f = 900 MHz 26.3 dB

f = 1.9 GHz 16.9 dB f = 2.7 GHz 13.3 dB

DISTORTION/NOISE

Output Third Order Intercept f = 900 MHz, ⌬f = 1 MHz, P

f = 1.9 GHz, ⌬f = 1 MHz, P f = 2.7 GHz, ⌬f = 1 MHz, P

Output Second Order Intercept f = 900 MHz, ⌬f = 1 MHz, P

= –28 dBm 23.6 dBm

= –28 dBm 20.8 dBm

= –28 dBm 19.5 dBm

= –28 dBm 31.6 dBm

Noise Figure f = 900 MHz 5.3 dB

f = 1.9 GHz 6 dB f = 2.7 GHz 6.8 dB

POWER INTERFACE Pin VPOS

Supply Voltage 2.7 3 3.3 V Total Supply Current 35 41 48 mA Supply Voltage Sensitivity 15.3 mA/V Temperature Sensitivity –40°C ⱕ TA ⱕ +85°C60␮A/°C

Specifications subject to change without notice.

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AD8353

SPECIFICATIONS

(VS = 5 V, TA = 25ⴗC, no external inductor between VOUT and VPOS, ZO = 50 ⍀, unless otherwise noted.)

Parameters Conditions Min Typ Max Unit

OVERALL FUNCTION

Frequency Range 0.1 2.7 GHz Gain f = 900 MHz 19.5 dB

f = 1.9 GHz 17.6 dB f = 2.7 GHz 15.7 dB

Delta Gain f = 900 MHz, –40°C ⱕ T

f = 1.9 GHz, –40°C ⱕ T f = 2.7 GHz, –40°C ⱕ T

ⱕ +85°C –0.96 dB

ⱕ +85°C –1.18 dB

ⱕ +85°C –1.38 dB

Gain Supply Sensitivity VPOS ± 10%, f = 900 MHz 0.09 dB/V

f = 1.9 GHz –0.01 dB/V f = 2.7 GHz –0.09 dB/V

Reverse Isolation (S

) f = 900 MHz –35.4 dB

f = 1.9 GHz –34.6 dB f = 2.7 GHz –30.2 dB

RF INPUT INTERFACE Pin RFIN

Input Return Loss f = 900 MHz 22.9 dB

f = 1.9 GHz 21.7 dB f = 2.7 GHz 11.5 dB

RF OUTPUT INTERFACE Pin VOUT

Output Compression Point f = 900 MHz 8.3 dBm

f = 1.9 GHz 8.1 dBm f = 2.7 GHz 7.5 dBm

Delta Compression Point f = 900 MHz, –40°C ⱕ T

f = 1.9 GHz, –40°C ⱕ T f = 2.7 GHz, –40°C ⱕ T

ⱕ +85°C –1.05 dB

ⱕ +85°C –1.49 dB

ⱕ +85°C –1.33 dB

Output Return Loss f = 900 MHz 27 dB

f = 1.9 GHz 22 dB f = 2.7 GHz 14.3 dB

DISTORTION/NOISE

Output Third Order Intercept f = 900 MHz, ⌬f = 1 MHz, P

f = 1.9 GHz, ⌬f = 1 MHz, P f = 2.7 GHz, ⌬f = 1 MHz, P

Output Second Order Intercept f = 900 MHz, ⌬f = 1 MHz, P

= –28 dBm 22.8 dBm

= –28 dBm 20.6 dBm

= –28 dBm 19.5 dBm

= –28 dBm 30.3 dBm

Noise Figure f = 900 MHz 5.6 dB

f = 1.9 GHz 6.3 dB f = 2.7 GHz 7.1 dB

POWER INTERFACE Pin VPOS

Supply Voltage 4.5 5 5.5 V Total Supply Current 35 42 52 mA Supply Voltage Sensitivity 4.3 mA/V Temperature Sensitivity –40°C ⱕ TA ⱕ +85°C45.7␮A/°C

Specifications subject to change without notice.

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AD8353

WARNING!

ESD SENSITIVE DEVICE

TOP VIEW

(Not to Scale)

NC = NO CONNECT

COM1

INPT

COM1

VOUT

VPOS

COM2COM2

AD8353

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage VPOS . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V

Input Power (re: 50 Ω) . . . . . . . . . . . . . . . . . . . . . . . 10 dBm

Equivalent Voltage . . . . . . . . . . . . . . . . . . . . . . 700 mV rms

Internal Power Dissipation

Paddle Not Soldered . . . . . . . . . . . . . . . . . . . . . . . 325 mW

Paddle Soldered . . . . . . . . . . . . . . . . . . . . . . . . . . . 812 mW

(Paddle Soldered) . . . . . . . . . . . . . . . . . . . . . . . . . 80°C/W

␪

(Paddle Not Soldered) . . . . . . . . . . . . . . . . . . . . 200°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) . . . . . . . . 240°C

*Stresses above those listed under Absolute Maximum Ratings may cause perma-

nent 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.

ORDERING GUIDE

Temperature Package Package

Model Range Description Option

AD8353ACP–REEL7 –40°C to +85°C 7" Tape and Reel CP-8 AD8353–EVAL Evaluation Board

PIN CONFIGURATION

PIN FUNCTION DESCRIPTIONS

Pin Mnemonic Description

1, 8 COM1 Device Common.

Connect to low impedance ground.

3 INPT RF Input Connection.

Must be ac-coupled.

4, 5 COM2 Device Common.

Connect to low

impedance ground. 6 VPOS Positive Supply Voltage 2 NC No Connection 7 VOUT RF Output Connection.

Must be ac-coupled.

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD8353 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.

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