MAX2009 Maxim Integrated Products, MAX2009 Datasheet - Page 17

• Manufacturer Part Number: MAX2009
• Description: 1200MHz to 2500MHz Adjustable RF Predistorter The MAX2009 Adjustable RF Predistorter is Designed to Improve Power Amplifier (PA) Adjacent-channel Power Rejection (ACPR) BY Introducing Gain And Phase Expansion in a pa Chain to Compensate For The Pa's
• Manufacturer: Maxim Integrated Products

Figure 5. MAX2009 Phase and Gain Optimization Circuit
V
PF_S1
= 1.5V
______________________________________________________________________________________
V
V
V
PBIN
PDCS1
PDCS2
= 0.8V
= 0V
= 5V
PREAMPLIFIER
P
IN
= 14dBm
1200MHz to 2500MHz Adjustable
11
12
19
18
9
INP
PFS1
PFS2
PBRAW
PBEXP
PBIN
17
6
CONTROL
OUTP
PREAMPLIFIER
PHASE
GAIN = 7dB
PDCS1
13
ING
PDCS2
14
3
CONTROL
GAIN
MAX2009
GCS
25
OUTG
RF Predistorter
GBP
GFS
27
23
24
AMPLIFIER
POWER
V
V
V
GBP
GFS
GCS
= 1V
= 1.5V
= 1V
17