TQM879008 TRIQUINT [TriQuint Semiconductor], TQM879008 Datasheet - Page 9

• Manufacturer Part Number: TQM879008
• Manufacturer: TRIQUINT [TriQuint Semiconductor]

Data Sheet: Rev G 12/10/12
© 2012 TriQuint Semiconductor, Inc.
TQM879008
1.5-2.7GHz ½ W Digital Variable Gain Amplifier
Pin Configuration and Description
PCB Material and Stack-up
PC Board Specifications
Pin
1
2
3
4, 22
6
8
14
16
28
All other Pins
0.062 ± 0.006
Finished Board
Thickness
0.014"
0.014"
Symbol
LE
DATA
CLK
N/C
RFIN
VCC_AMP1/
VCC_AMP2
VCC_AMP3
RFOUT
VCC_SPI
GND
Nelco N-4000-13
Nelco N-4000-13
ε
Description
Serial Latch Enable Input. When LE is high, latch is clear and content of SPI control the attenuator.
When LE is low, data in SPI is latched.
Serial data input. The data and clock pins allow the data to be entered serially into SPI and is
independent of Latch state.
Serial clock input.
No connect or open. This pin is not connected in this module
Input, matched to 50 ohms. Internally DC blocked.
Supply Voltage to AMP1 and AMP2. This pin is connected internally to bypass capacitors followed
by inductor inside the module.
Supply Voltage to AMP3. This pin is connected internally to bypass capacitors followed by inductor
inside the module.
Output, matched to 50 ohms. Internally DC blocked.
Supply voltage for SPI and DSA chip. This pin is connected to bypass capacitor internally.
RF/DC Ground Connection
r
Core
=3.7 typ.
DATA
RFIN
GND
GND
CLK
NC
LE
1
2
3
4
5
6
7
1 oz. Cu top layer
1 oz. Cu inner layer
1 oz. Cu inner layer
1 oz. Cu bottom layer
S
P
I
AMP1
DSA
DC Biasing
- 9 of 11-
AMP2
Matching
DC Biasing
Matching
Connecting the Digital World to the Global Network
21
20
19
18
17
16
15
GND
GND
GND
GND
GND
RFOUT
GND
Paddle - GND
Backside
Disclaimer: Subject to change without notice
®