Transmit VGA for Use with
RF DACs and Transceivers
ADL6317
Data Sheet
FEATURES
GENERAL DESCRIPTION
Transmit VGA for RF DAC, transceiver, and SoC to power
amplifier interface
RF output frequency range: 1500 MHz to 3000 MHz
Internal balun with bias-tee to supply RF DAC outputs
Integrated VVA attenuation range with on-chip DAC: 20.5 dB
2-stage high linearity amplifiers
The ADL6317 is a transmit variable gain amplifier (VGA) that
provides an interface from radio frequency digital-to-analog
converters (RF DACs), transceivers, and systems on a chip (SoC)
to power amplifiers. Integrated balun and hybrid couplers allow
high performance RF capability in the frequency range of
1500 MHz to 3000 MHz.
RF DSA attenuation range: 15.5 dB with 0.5 dB step
resolution
50 Ω differential inputs and 50 Ω single-ended output
Fully programmable via a 4-wire SPI
Single 5 V supply
38-terminal, 10.5 mm × 5.5 mm LGA
To optimize performance vs. power level, the ADL6317
includes a voltage variable attenuator (VVA), high linearity
amplifiers, and a digital step attenuator (DSA). All of the
devices integrated into the ADL6317 are programmable via a
4-wire serial port interface (SPI).
The ADL6317 is manufactured on an advanced silicon
germanium (SiGe), bipolar complementary metal oxide
semiconductor (BiCMOS) process.
APPLICATIONS
2G/3G/4G/long-term evolution (LTE) in FDD/TDD broadband
communication systems
Table 1. Related Devices in Transmit VGA Family
Parameter
ADL6316
ADL6317
Frequency Range (MHz)
500 to 1000
1500 to 3000
FUNCTIONAL BLOCK DIAGRAM
GND TXEN
CS
SDI SCLK SDO
MUXOUT
GND VVA_ANALOG CS5 CS4
GND
GND
GND
GND
GND
3.3V
LDO
TEMPERATURE
SENSOR
1.8V SPI
LDO
FUSE
BLOCK
ANALOG
MUX
ADC
SERIAL PORT INTERFACE
VVA
VVA
DSA
DSA
IN_N
AMP1
AMP2
AMP2
RFOUT
GND
DAC
IN_P
AMP1
GND
GND
VDAC
ADL6317
GND
GND
GND
GND
GND
GND
GND
V50AMP1
V33FUSE
V50AMP2
Figure 1.
Rev. B
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