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F0480 Datasheet(PDF) 9 Page - Renesas Technology Corp

Part # F0480
Description  400 MHz ??2700 MHz 13 dB typical max gain
PDF  28 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

F0480 Datasheet(HTML) 9 Page - Renesas Technology Corp

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Matched Broadband RF VGA
400MHz to 2700MHz
Glitch-Free
TM, Zero-DistortionTM, RF VGA
9
Rev 3, April 2015
IDTF0480NBGI
Datasheet
F0480 DVGA ATTENUATION WORD TRUTH TABLE (LSB = first in)
The SPI interface should be built up by an 8-bit word (defined as MOSI) where 5 bits are used for attenuation setting
per the example shown below. BOLD indicates bits used for programming the attenuator; data bits 2 through 6.
D7
(MSB)
D6
D5
D4
D3
D2
D1
D0
(LSB)
ATTENUATION
SETTING
x
Low
Low
Low
Low
Low
x
x
insertion loss
x
Low
Low
Low
Low
High
x
x
1 dB
x
Low
Low
Low
High
Low
x
x
2 dB
x
Low
Low
High
Low
Low
x
x
4 dB
x
Low
High
Low
Low
Low
x
x
8 dB
x
High
Low
Low
Low
Low
x
x
16 dB
x
High
Low
High
High
Low
x
x
22 dB
x
High
Low
High
High
High
x
x
23 dB (max)
x
High
High
Low
Low
Low
x
x
23 dB (max)
x
High
High
Low
Low
High
x
x
23 dB (max)
x
High
High
Low
High
Low
x
x
23 dB (max)
x
High
High
Low
High
High
x
x
23 dB (max)
x
High
High
High
Low
Low
x
x
23 dB (max)
x
High
High
High
Low
High
x
x
23 dB (max)
x
High
High
High
High
Low
x
x
23 dB (max)
x
High
High
High
High
High
x
x
23 dB (max)
STANDBY TRUTH TABLE*
PARAMETER
LEVEL
FUNCTION
STBY
0 Volts or
Open Circuit
Power On
+5 Volts
Power Off
* Startup/Power on requirements:
SPI shall be left on during Standby mode. When the circuit is initially powered up (+5V applied on pin 12/13), the
default VGA setting should be minimum gain (max attenuation setting). If the attenuator is programmed in Standby
mode, the programmed setting will be active when the device is taken out of Standby mode.
SPI LOGIC LEVEL CONTROL - PIN 11
PARAMETER
LEVEL
FUNCTION
LogicCTL
3.3 Volts or
open Circuit
3.3V logic
0 Volts
1.8V logic



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