SKY12329-350LF Skyworks Solutions Inc, SKY12329-350LF Datasheet - Page 5

• Manufacturer Part Number: SKY12329-350LF
• Description: ATTENUATOR DGTL GAAS 5BIT 16-QFN
• Manufacturer: Skyworks Solutions Inc

Specifications of SKY12329-350LF

• Attenuation Value: 31dB
• Tolerance: ±3%
• Frequency Range: 400MHz ~ 4GHz
• Impedance: 50 Ohm
• Package / Case: 16-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Other names: 863-1042-2

Pin Out
Evaluation Board
The evaluation board for SKY12329-350LF allows the part to
be fully exercised. The insertion loss of the transmission lines
between J
performance of the calibration through line, which contains two
DC block capacitors (560 pF) in identical positions to the DC
blocks present in the main circuit.
The state of the SKY12329-350LF is controlled by applying the
appropriate logic level voltages to ports V
Truth Table
Pin Descriptions
Pin Number
1, 4–9
3, 10
11
12
13
14
15
16
2
GND
GND
RF1
NC
1
–U
1
Pin Name
1
2
3
4
and U
GND
RF1
RF2
N/C
200709 Rev. F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • February 20, 2009
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
V
V
V
V
V
5
4
3
2
1
GND
16
V
5
1
1
–J
2
Equipotential Point—Equipotential points for
control voltages and RF circuits. Must be
connected to PCB ground via lowest possible
RF Input/Output—RF input or output port.
A DC block is required for this port.
No connection
RF Input/Output—RF input or output port.
A DC block is required for this port.
Control Voltage—Control voltage input for
16 dB weighted bit (MSB)
Control Voltage—Control voltage input for
8 dB weighted bit
Control Voltage—Control voltage input for
4 dB weighted bit
Control Voltage—Control voltage input for
2 dB weighted bit
Control Voltage—Control voltage input for
1 dB weighted bit (LSB)
GND
can be determined by measuring the
15
V
6
2
GND
14
V
7
3
Description
1
GND
V
13
through V
4
8
12
11
10
9
5
V
RF2
NC
GND
, per the
5
SKY12329-350LF Evaluation Circuit PCB
SKY12329-350LF Evaluation Circuit
Evaluation Board Components
CAUTION: Although this device is designed to be as robust as
Component
C
R
J
RF1
1
2
1
R
U
–C
–R
, J
1
1
2
4
6
possible, ESD (Electrostatic Discharge) can damage
this device. This device must be protected at all
times from ESD. Static charges may easily produce
potentials of several kilovolts on the human body or
equipment, which can discharge without detection.
Industry-standard ESD precautions must be employed
at all times.
C1
C3
DC blocking capacitor
RF block
Current limiting
SKY12329-350LF GaAs digital attenuator
SMA connectors
R
1
V
S
NC
1
2
3
4
Description
R
2
16
V
5
1
Through Line
SKY1329-350LF
R
3
V
15
6
2
Data Sheet • SKY12329-350LF
R
4
14
V
7
3
R
5
13
V
8
4
12
11
10
9
R
NC
6
V
560 pF, size 0402
10k W, size 0402
5
C4
C2
Default
100 W
RF2
5