MAX11014 Datasheet, PDF (62/69 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
FUNCTION
The base value signifies the starting point for the LUT. The KLUT base
N/A
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 K LUTs 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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