ALPHA AF002N2-32 Datasheet

Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com 1

Specifications subject to change without notice. 3/99A

Parameter Condition Frequency Min. Typ. Max. Unit

Switching Characteristics

4

Rise, Fall (10/90% or 90/10% RF) 7 ns
On, Off (50% CTL to 90/10% RF) 10 ns
Video Feedthru 20 mV

Input Power for 1 dB Compression For All Attenuation Levels 0.05 GHz -3 dBm

0.90 GHz 0 dBm

Control Voltages V

Low

= 0 to -0.2 V @ 20 µA Max.

V

High

= -5 V @ 50 µA Max.to -8 V @ 200 µA Max.

VS= V

High

± 0.2 V

GaAs IC 15 dB Voltage Variable
Attenuator Single Control DC–2 GHz

Features

■ Single Voltage Control, Positive or
Negative Voltage

■ Low Cost SOT-143 Package

■ 15 dB Dynamic Range

■ Non-Reflective

AF002N2-32

0.021 (0.53 mm)

0.015 (0.38 mm)

0.075

(1.91 mm)

0.120 (3.05 mm)

0.105 (2.67 mm)

0.098 (2.49 mm)

0.083 (2.11 mm)

0.055 (1.40 mm)

0.047 1.19 mm)

0.037 (0.94 mm)

0.030 (0.76 mm)

0.035 (0.89 mm)

0.004 (0.19 mm)

0.001 (0.03 mm)

8˚0’ MAX.

0.010

(0.25 mm)

0.005 (0.13 mm)

0.006 (0.15 mm)

0.003 (0.08 mm)

Description

The AF002N2-32 is a single control non-reflective IC FET
VVA ideal for AGC applications. Its low DC drain
characteristic and size make it suitable for PCS and
portable cellular markets.A positive control voltage ma y
be used by adding 2 DC blocking capacitors (CBL) and
1 bypass capacitor (CBP).

Operating Characteristics at 25°C (0, -5 V)

Parameter

1

Frequency

2

Min. Typ. Max. Unit

Insertion Loss (V1 = -5 V)

3

DC–0.5 GHz 3.1 3.3 dB
DC–1.0 GHz 3.3 3.5 dB
DC–2.0 GHz 3.5 3.8 dB

Attenuation (V1= 0 V) DC–0.5 GHz 18 20 dB

DC–1.0 GHz 14 16 dB
DC–2.0 GHz 10 12 dB

VSWR (V1= 0 to -5 V) DC–2.0 GHz 2.0:1 2.2:1

Electrical Specifications at 25°C (0, -5 V)

SOT-143

1.All measurements made in a 50 Ω system, unless otherwise specified.

2. DC = 300 kHz.

3. Insertion loss changes by 0.003 dB/°C.

4.Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.

2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com

Specifications subject to change without notice. 3/99A

GaAs IC 15 dB Voltage Variable Attenuator Single Control DC–2 GHz AF002N2-32

5

4

3

2

1 2

1

Frequency (GHz)

Insertion Loss vs. Frequency

dB

DC

+85˚C

-40˚C

Typical Performance Data (0, -5 V)

4

21

J

2

J

1

C

BP

V

S

V

1

10 kΩ

C

BL

C

BL

GND

3

Characteristic Value

RF Input Power 10 mW > 500 MHz 0/-8 V

4 mW @ 50 MHz 0/-8 V
Control Voltage +0.2 V, -10 V
Operating Temperature -40°C to +85°C

Storage Temperature -65°C to +150°C

Θ

JC

25°C/W

Absolute Maximum Ratings

Optimum Tuning for Maximum Attenuation

Pin Out

Note: Operating this device above any of these parameters may cause
irreversible damage.

-5

-4

-3

-2

-1

0

Attenuation (dB)

Attenuation vs. Control Voltage

3 6 9 12 15 18 21

F = 500 MHz

40

35

30

25

20

15

Attenuation (dB)

Attenuation vs. IP3

IP3 (dBm)

Two Tone Testing

at 70 and 71 MHz

PIN = 0 dBm

3 6 9 12 15 18 21

V

1

Attenuation J1–J

2

-5 Insertion Loss
0 Full Attenuation

Truth Table

Negative Voltage Operation

Positive Voltage Operation

V

1

Attenuation J1–J

2

V

High

Full Attenuation

0 Insertion Loss

V

High

= +5 V to +8 V (VS= V

High

± 0.2 V).

External components for positive voltage operation only.
C

BL

= 100 pF.

F (MHz) C

BP

Typical Maximum Attenuation

130 220 pF 21
730 15 pF 21

1925 1.6 pF 21