SKY12325-350LF Datasheet, PDF (1/4 Pages) Skyworks Solutions Inc. – 3-Bit Digital Attenuator 500 MHz-6 GHz, 1 dB LSB

PRELIMINARY DATA SHEET
SKY12325-350LF: 3-Bit Digital Attenuator
500 MHz–6 GHz, 1 dB LSB
Features
● _{Broadband: 500 MHz–6 GHz}
● _{Attenuation range: 7 dB}
● _{Positive control voltage}
● _{Resolution: 1 dB}
● _{Miniature QFN-16 3 x 3 mm package}
● _{Available lead (Pb)-free and RoHS-compliant}
Applications
● _{Cellular BTS}
● _{General-purpose level control}
Description
The SKY12325-350 is a 3-bit digital attenuator in a low cost
QFN-16, 3 x 3 mm package. The attenuation bits are binary
weighted, with the least significant bit (LSB) 1 dB. States are
selected by 3 positive-voltage control inputs. DC blocking capacitors
are required at each RF port. Both RF ports are absorptive.
The QFN-16 package is lead (Pb)-free and complies with current
RoHS requirements.
The attenuator can operate over the temperature range of
-40 °C to +85 °C.
NEW Skyworks offers lead (Pb)-free, RoHS (Restriction of
Hazardous Substances)-compliant packaging.
Functional Block Diagram
RF Input/Output
V1
4 dB
2 dB
V2
V3
1 dB
RF Input/Output
Electrical Specifications at 25°C
V_CTL = 0 V/5V, T = 25 °C, P_INPUT = 0 dBm, Z₀ = 50 Ω, unless otherwise noted
Parameter
Frequency
Insertion loss
0.5–3.0 GHz
3.0–4.5 GHz
4.5–6.0 GHz
Attenuation range
Attenuation accuracy
0.5–4.0 GHz
4.0–6.0 GHz
Return loss
0.5–3.5 GHz
3.5–6.0 GHz
Min.
Typ.
Max.
Unit
0.7
0.9
dB
0.9
1.1
dB
1.3
1.5
dB
7
dB
± (0.2 + 3% of attenuation
dB
setting in dB)
± (0.3 + 3% of attenuation
dB
setting in dB)
15
dB
15
dB
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
200243 Rev. B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 27, 2006
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