Datasheet

MAX11014/MAX11015
Automatic RF MESFET Amplifier
Drain-Current Controllers
62 ______________________________________________________________________________________
Both the T and KLUTs contain 12-bit data. The TLUT
data is stored in two’s-complement format with decimal
values ranging from -2048/2048 (-1) to +2047/2048
(+0.9995) in steps of approximately 0.0005.
The KLUT data is stored in binary format with decimal
values ranging from 0 to +4095/4096 (0.9998) in steps
of approximately 0.0002.
The temperature LUT data is stored in two’s-complement
format. Figure 29 details a channel 1 TLUT example with
eight entries where the base temperature is -30°C and
the step size is 128 (+16°C between each entry).
BIT NAME DATA BIT
RESET STATE
FUNCTION
BASE11–BASE0
D11–D0 N/A
The base value signifies the starting point for the LUT. The KLUT base
value is stored in binary format, with the LSB equaling 1. The TLUT base
value is stored in two’s-complement format, with the LSB equaling
+0.125°C.
Table 28d. LUT Base
KLUT2CNFG 0xC3
KLUT1CNFG
0xC2
TLUT2CNFG 0xC1
T LUT1CNFG = 0 0100 0xxx 0111
0xC0
0x00
TLUT1 VALUE 1
TLUT1 VALUE 0
0x01
TLUT1 VALUE 3
TLUT1 VALUE 2
TLUT1 VALUE 5
TLUT1 VALUE 4
TLUT1 VALUE 7
TLUT1 VALUE 6
TLUT1 VALUE 8 = UNUSED
0x02
0x03
0x04
0x05
0x06
0x07
0x08
TLUT1BASE = -30°C
KLUT2BASE
0xC7
KLUT1BASE
0xC6
TLUT2BASE 0xC5
TLUT1BASE = 1111 0001 0000 (-30˚C) 0xC4
-14°C
+2°C
+18°C
+34°C
+50°C
+66°C
+82°C
Figure 29. TLUT Example