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ASB Inc. · sales@asb.co.kr · Tel: +82-42-528-7223

July 2012

ASL21X

Medium Gain, Low Noise GPS Amplifier

1) IIP3 is measured with two tones at an output power of -40 dBm/tone separated by 1 MHz

2) IIP3 is measured with two tones at an output power of -20 dBm/tone separated by 1 MHz

Parameters

Units

Min

Typ

Max

Frequency

MHz

1575

Gain

dB

20.5

S11

dB

-12

S22

dB

-12

Noise Figure

dB

0.7

Supply Current

mA

4

6

8

Supply Voltage

V

1.8

Control Current

mA

300

1)

V

1.8

1)

Power On

Parameters

Units

Typical

Testing Frequency

MHz

1575

1575

1575

2450

2450

2450

2338

Gain

dB

16.5

20.5

21.5

20.5

20.0

13.5

21.0

S11

dB

-6

-12

-15

-15

-15

-15

-11

S22

dB

-12

-12

-12

-10

-10

-15

-14

Input IP3

dBm

-20

1)

-20

1)

-12

1)

-8

1)

-13

1)

5.5

2)

-3

1)

Noise Figure

dB

1.1

0.65

0.6

0.8

0.8

0.9

0.6

Output P1dB

dBm

-10

-6

-2

0

-1

6

3

Supply Current

mA

2.0

6.0

13.0

13.0

13.0

12.0

23.0

Supply Voltage

V

1.8

1.8

3.0

3.0

3.0

3.0

5.0

Control Current

mA

300

300

300

300

-

300

-

V

1.8

1.8

3.0

3.0

-

3.0

-

Parameters

Rating

Operating Case Temperature

-40 to +85°C

Storage Temperature

-40 to +150°C

Device Voltage

+6 V

Operating Junction Temperature

+150°C

Input RF Power (CW, 50ohm matched)*

22 dBm

Features

Description

Package Style: SOT-363

Typical Performance

Absolute Maximum Ratings

· 20.5 dB Gain at 1575 MHz

· 0.65 dB NF at 1575 MHz

· Power ON/OFF Function.

· Supply Voltage = 1.8 V

ASL21X is an LNA for GPS and XM in mobile

equipment which requires lower current and lower

noise. Power saving function is built in. Low noise

performance is kept over the wide range of power

enable voltage and DC power supply voltage.

Product Specifications

Pin Configuration

Pin No.

Function

1

RFIN

2,5

GND

3

Enable

4

RFOUT / Bias

6

NC (Not

connected)

Application Circuit

·GPS ( 1.8V / 6mA )

·GPS ( 1.8V / 2mA )

·GPS ( 3V / 5mA,

without Power ON/OFF Function)

·GPS ( 3V / 13mA )

·1164 ~ 1278 MHz ( 3V /13mA )

·1550 ~ 1620 MHz ( 3V /13mA )

·2400 ~ 2500 MHz( 3V / 13mA )

·2400 ~ 2500 MHz( 3V / 13mA,

without Power ON/OFF Function)

·2400 ~ 2500 MHz( 3V / 12mA,

Gain 13.5dB)

·XM ( 5V / 23mA,

without Power ON/OFF Function)

·XM ( 5V / 23mA, Low Gain,

without Power ON/OFF Function)