Rainbow Electronics MAX1386 - Manual (Page 50)

MAX1385/MAX1386
Dual RF LDMOS Bias Controllers
with I
2 C/SPI Interface
50 ______________________________________________________________________________________
SCL SCL
SDA SDA/DIN
ALARM
SAFE1
SAFE2
DXP1
DXN1
DXP2
DXN2
*SELECT R F AND C F BASED ON DESIRED FILTER CUT-OFF FREQUENCY.
LIMIT R F TO MINIMIZE OFFSET ERRORS.
GATE1
GATE2
A0/CSB
A1/DOUT
A2/N.C.
OPSAFE1
OPSAFE2
BUSY
ADCIN1
ADCIN2
DGND
CNVST
(AT LDMOSFET)
(AT LDMOSFET)
+5V
DV DD
GATEV DD AV DD REFDAC REFADC
CS1+
CS1-
CS2+
CS2-
GATEGND AGND PGAOUT2 PGAOUT1
RF INPUT
DRAIN
SUPPLY
RF
OUTPUT
C
F
*
R F *
RF
OUTPUT
RF INPUT
DRAIN
SUPPLY
EXTERNAL
REFERENCE
5V 5V
MICROCONTROLLER
5V
MAX1385
MAX1386
SEL
R F *
C F *
Typical Operating Circuit (I 2 C Mode)