200935F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • May 11, 2012
1
DATA SHEET • SKY12407-321LF DIFFERENTIAL DIGITAL ATTENUATOR
Figure 2. SKY12407-321LF Pinout – 12-Pin QFN
(Top View)
Table 1. SKY12407-321LF Signal Descriptions
Pin #
1
RFIP
Name
Description
Positive RF input. Comprises J1 along with
pin 3. Must be DC blocked from external
circuit.
Must be AC-coupled to external circuit
ground.
Negative RF input. Comprises J1 along with
pin 1. Must be DC blocked from external
circuit.
Ground
Ground
Ground
Pin #
7
RFON
Name
Description
Negative RF output. Comprises J2 along
with pin 9. Must be DC blocked from
external circuit.
Must be AC-coupled to external circuit
ground.
Positive RF output. Comprises J2 along with
pin 7. Must be DC blocked from external
circuit.
Control voltage input.
Ground
Control voltage input.
2
3
CBYPASS1
RFIN
8
9
CBYPASS2
RFOP
4
5
6
Note:
GND
GND
GND
Exposed pad must be grounded.
10
11
12
VCTL2
GND
VCTL1
Table 2. SKY12407-321LF Absolute Maximum Ratings
Parameter
RF input power @ 5 V
Control voltage
Operating temperature
Storage temperature
Note:
Symbol
P
IN
V
CTL
T
OP
T
STG
Minimum
Typical
Maximum
+32
6
Units
dBm
V
°C
°C
–40
–65
+85
+150
Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other
parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device.
CAUTION:
Although this device is designed to be as robust as possible, Electrostatic Discharge (ESD) 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 should be used at all times.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY12407-321LF are
provided in Table 2. Electrical specifications are provided in
Table 3.
Typical performance characteristics of the SKY12407-321LF are
illustrated in Figures 3 through 6.
The state of the SKY12407-321LF is determined by the logic
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