MAX11014_08 Datasheet, PDF (62/70 Pages) Maxim Integrated Products – Automatic RF MESFET Amplifier Drain-Current Controllers

Automatic RF MESFET Amplifier
Drain-Current Controllers
Table 28d. LUT Base
BIT NAME
DATA BIT
BASE11–BASE0
D11–D0
RESET STATE
N/A
FUNCTION
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.
KLUT2BASE
0xC7
KLUT1BASE
0xC6
TLUT2BASE
0xC5
TLUT1BASE = 1111 0001 0000 (-30˚C)
0xC4
KLUT2CNFG
0xC3
KLUT1CNFG
0xC2
TLUT2CNFG
0xC1
T LUT1CNFG = 0 0100 0xxx 0111
0xC0
TLUT1 VALUE 8 = UNUSED
0x08
+82°C
TLUT1 VALUE 7
0x07
+66°C
TLUT1 VALUE 6
0x06
+50°C
TLUT1 VALUE 5
0x05
+34°C
TLUT1 VALUE 4
0x04
+18°C
TLUT1 VALUE 3
0x03
+2°C
TLUT1 VALUE 2
0x02
-14°C
TLUT1 VALUE 1
0x01
TLUT1 BASE = -30°C
TLUT1 VALUE 0
0x00
Figure 29. TLUT Example
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).
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