Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200200 Rev. C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • October 9, 2007 1
AA104-73, AA104-73LF: GaAs IC 1-Bit Digital Attenuator,
32 dB 300 kHz–2.5 GHz
DATA SHEET
Features
●1-bit attenuation of 32 dB 300 kHz–1 GHz, 27 dB 1–2 GHz, 24 dB
2–2.5 dB
●Combine with AA260-85 or AA101-80 for 63 dB 6-bit solution
●Tune with one capacitor and/or resistor to desired operating frequency
and attenuation
●Ideal for both IF and RF applications including cable, GSM, PCS, EDGE,
3G and ISM
●Available lead (Pb)-free and RoHS-compliant MSL-1 @ 260 °C
per JEDEC J-STD-020
Description
The AA104-73 is a 1-bit, GaAs IC FET digital attenuator in a low-cost
SOT-6 package. This attenuator has up to 32 dB total attenuation. The
attenuator requires two lines of voltage control. The AA104-73 is partic-
ularly suited where high attenuation accuracy, low insertion loss, and
low intermodulation products are required. Typical application is as a
sixth bit value for the AA260-85 and AA101-80. A total attenuation of
63 dB in 1 dB steps can be obtained by combining the two attenuators.
Parameter(1) Frequency(2) Min. Typ. Max. Unit
Insertion loss 300 kHz–1.0 GHz 0.8 1.0 dB
1.0–2.0 GHz 0.9 1.2 dB
2.0–2.5 GHz 1.0 1.3 dB
Attenuation range 300 kHz–1.0 GHz 32 dB
1.0–2.0 GHz 27 dB
2.0–2.5 GHz 24 dB
2.3–2.5 GHz 23 dB
Attenuation accuracy(3, 4) 300 kHz–0.5 GHz ± (0.4 + 10% of attenuation setting in dB) dB
0.85–0.95 GHz ± (0.4 + 5% of attenuation setting in dB) dB
1.7–2.0 GHz ± (0.5 + 6% of attenuation setting in dB) dB
2.0–2.5 GHz ± (0.6 + 7% of attenuation setting in dB) dB
2.3–2.5 GHz ± (0.7 + 7% of attenuation setting in dB) dB
VSWR (insertion loss state)(5) 300 kHz–2.5 GHz 1.2:1 1.5:1
VSWR (attenuation state)(5) 300 kHz–2.5 GHz 1.5:1 2.0:1
Electrical Specifications at -40 °C to +85 °C (0, 3 V), (0, 5 V)
Pin Out
1. All measurements made in a 50 Ωsystem, unless otherwise specified.
2. Operates to 300 kHz when controlled with negative voltage, CBP not required.
3. Attenuation value set by CBP.
4. Attenuation referenced to insertion loss.
5. Input/output. In band.
CBL
V2
NC/GND
V1
J1
J2
RF
GND
CBL
CBP
1 2 3
6 5 4
32
Positive Voltage
CBL = 47 pF for frequencies >500 MHz. See table on previous page for CBP value.
See application notes APN2013 and APN2014 for 6 bit attenuator requirements.
Skyworks offers lead (Pb)-free, RoHS (Restriction of
Hazardous Substances)-compliant packaging.
NEW
Typical Performance Data at -40 °C to +85 °C (0, 5 V) CBP = 12 pF, CBL = 47 pF
-1.50
-0.25
-0.50
-0.75
-1.00
-1.25
0
0 0.5 1.0 1.5 2.0 2.5 3.0
Insertion Loss (dB)
Frequency (GHz)
Insertion Loss vs. Frequency
85 °C-40 °C
25 °C
-33
-27
-28
-29
-30
-31
-32
0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20
Max Attenuation (dB)
Frequency (GHz)
32 dB State vs. Frequency
-40 °C
85 °C
25 °C
1.0
1.2
1.4
1.6
1.8
2.0
0 0.5 1.0 1.5 2.0 2.5 3.0
VSWR
Frequency (GHz)
VSWR vs. Frequency
Insertion Loss State
J125 °C J225 °C
J285 °C
J1-40 °C
J2-40 °C
J185 °C
1.0
3.0
2.5
2.0
1.5
0 0.5 1.0 1.5 2.0 2.5 3.0
VSWR
Frequency (GHz)
VSWR vs. Frequency
32 dB State
J225 °C
J125 °C
J285 °C
J1-40 °C
J2-40°C
J185 °C
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
October 9, 2007 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • 200200 Rev. C
DATA SHEET • AA104-73, AA104-73LF
2
Parameter Condition Frequency Min. Typ. Max. Unit
Switching characteristics
Rise, fall 10/90% or 90/10% RF 50 ns
On, off 50% CTL to 90/10% RF 100 ns
Video feedthru TRISE = 1 ns, BW = 500 MHz 25 mV
Input Power for 1 dB compression VS= 3 V 0.5–2.5 GHz 14 21 dBm
VS= 5 V 0.5–2.5 GHz 18 23 dBm
Intermodulation intercept point (IP3) For two-tone input power +10 dBm
VS= 3 V 0.5–2.5 GHz 36 41 dBm
VS= 5 V 0.5–2.5 GHz 38 44 dBm
Control voltages VLOW = 0 to 0.2 V @ 20 µA max.
VHIGH = 3 V @ 100 µA max. to 5 V @ 200 µA max.
Electrical Specifications at -40 °C to +85 °C (0, 3 V), (0, 5 V)
DATA SHEET • AA104-73, AA104-73LF
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200200 Rev. C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • October 9, 2007 3
Control Voltage Temperature IP3 @ 10 dBm
(V) (°C) each tone (dBm)
3 -40 41
3 25 42
3 85 40
5 -40 43
5 25 44
5 85 42
IP3 vs. Voltage and Temperature
1 dB 1 dB
Compression Compression
Control voltage Temperature insertion loss 32 dB state
(V) (°C) state (dBm) (dBm)
3 -40 21 16.5
3 25 21 15
3 85 21 14
5 -40 22 22.5
5 25 22 22.5
5 85 22 22.5
Compression Point vs. Voltage and Temperature
Frequency: 500 MHz.
Two-tone input power: 10 dBm each tone.
Tone frequencies: 500 and 501 MHz.
Attenuation vs. Frequency DC–2.5 GHz
CBP = 2.2, 2.7, 3.3 and 12 pF
Frequency (GHz)
Attenuation (dB)
-35
-30
-25
-20
-15
-10
-5
0
0 0.5 1.0 1.5 2.0 2.5
12 pF
2.2 pF
2.7 pF
3.3 pF
VSWR vs. Frequency DC–2.5 GHz
CBP = 2.2, 2.7, 3.3 and 12 pF
0 0.5 1.0 1.5 2.0 2.5
Frequency (GHz)
VSWR
1.0
1.2
1.4
1.6
1.8
2.0
Ins. Loss 12 pF
2.2 pF
2.7 pF
3.3 pF
Attenuation vs. Frequency 1.5–2.5 GHz
CBP = 2.2, 2.7, and 3.3 pF
Frequency (GHz)
Attenuation (dB)
-30.0
-27.5
-25.0
-22.5
-20.0
-17.5
-15.0
1.50 1.75 2.00 2.25 2.50
2.2 pF
1.8 pF
2.7 pF
3.3 pF
VSWR vs. Frequency DC–0.5 GHz
CBP = 220, 1000, 1500 pF
Frequency (GHz)
VSWR
1.0
1.2
1.4
1.6
1.8
2.0
0 0.1 0.2 0.3 0.4 0.5
Ins. Loss
1000 pF
1500 pF
220 pF
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
October 9, 2007 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • 200200 Rev. C
DATA SHEET • AA104-73, AA104-73LF
4
Attenuation vs. Frequency DC–0.5 GHz
CBP = 220, 1000, 1500 pF
Frequency (GHz)
Attenuation (dB)
-40
-36
-32
-28
-24
-20
0 0.1 0.2 0.3 0.4 0.5
1000 pF
1500 pF
220 pF
CBL (pF) CBP (pF) Operating Frequency (GHz)
47 1.8 2.3–2.5
47 2.2 2–2.3
47 2.7 1.8–2
47 3.3 1.6–1.8
47 12 0.9–1.05
47 15 0.8–0.9
330 220 0.2–0.35
1500 1000 0.07–0.2
10000 1500 0.015–0.25
All other conditions not recommended.
VHIGH = 3 to 5 V.
Attenuation
V1V2J1–J2
VHIGH 0 Reference I.L.
0V
HIGH 32 dB
Truth Table
Positive Control
Characteristic Value
RF input power 1 W > 500 MHz 0/8 V
0.5 W @ 50 MHz 0/8 V
Supply voltage 8 V
Control voltage -0.2 V, +8 V
Operating temperature -40 °C to +85 °C
Storage temperature -65 °C to +150 °C
Absolute Maximum Ratings
Performance is guaranteed only under the conditions listed in the specifications table and is
not guaranteed under the full range(s) described by the Absolute Maximum specifications.
Exceeding any of the absolute maximum/minimum specifications may result in permanent
damage to the device and will void the warranty.
CAUTION: Although this device is designed to be as robust as
possible, ESD (Electrostatic Discharge) can damage
this device. This device must be protected at all times
from ESD. Static charges may easily produce poten-
tials of several kilovolts on the human body or
equipment, which can discharge without detection.
Industry-standard ESD precautions must be employed
at all times.
Recommended Solder Reflow Profiles
Refer to the “Recommended Solder Reflow Profile”
Application Note.
DATA SHEET • AA104-73, AA104-73LF
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200200 Rev. C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • October 9, 2007 5
-25
-15
-16
-17
-18
-19
-20
-21
-22
-23
-24
0 0.2 0.4 0.6 0.8 1.0
Max Attenuation (dB)
Frequency (GHz)
20 dB State vs. Frequency
CBP = 100 pF, CBL = 220 pF, RBP =15Ω
20 dB 25 ˚C
1.00
2.50
2.25
2.00
1.75
1.50
1.25
0 1.00.80.60.40.2
VSWR
Frequency (GHz)
VSWR vs. Frequency
20 dB State
J225 °C J125 °C
CBL
V2
NC/GND
V1
J1
J2
RF
GND
CBL
RBP
CBP
1 2 3
6 5 4
20
Application: AA104-73 Used as 1-Bit 20 dB Attenuator 25 °C (0, 5 V)
CBL =220 pF, CBP =100 pF, RBP =15 Ω, fC=400 MHz with select values of CBP and RBP,
center frequency and attenuation value respectively can be varied.
SOT-6
0.074
(1.90 mm) Ref.
0.071 (1.80 mm)
0.052 (1.30 mm)
0.037 (0.95 mm) Ref.
0.122 (3.10 mm)
0.106 (2.70 mm)
0.006
(0.15 mm)
0.000
(0.00 mm)
0.057 (1.45 mm)
0.035 (0.90 mm)
0.020 (0.51 mm)
0.014 (0.350 mm)
0.126 (3.20 mm)
0.087 (2.20 mm)
Pin 6
Pin 1
Pin 1
Indicator
0.022 (0.61 mm)
0.004 (0.10 mm)
0.014
(0.26 mm)
0.004
(0.10 mm)
0.012
(0.30 mm)
Typ.
5.0° ± 1°
5.0° ± 1°
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
October 9, 2007 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • 200200 Rev. C
DATA SHEET • AA104-73, AA104-73LF
6
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