LMH6401_16 Datasheet, PDF (25/48 Pages) Texas Instruments – LMH6401 DC to 4.5 GHz, Fully-Differential, Digital Variable-Gain Amplifier

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LMH6401
SBOS730A – APRIL 2015 – REVISED MAY 2015
9.6.6 Thermal Feedback Frequency Control (address = 5h) [default = 45h]
Figure 58. Thermal Feedback Frequency Control
7
6
5
Reserved
Reserved
Reserved
R/W-0b
R/W-1b
R/W-0b
LEGEND: R/W = Read/Write; -n = value after reset
4
R/W-0b
3
2
1
Thermal Feedback Frequency Control
R/W-0b
R/W-1b
R/W-0b
0
R/W-1b
Table 9. Thermal Feedback Frequency Control Field Descriptions
Bit Field
7-5 Reserved
4-0
Thermal Feedback Frequency
Control
Type
R/W
R/W
Default
010
00101
Description
Reserved, always program to 010
00000 = Minimum thermal feedback frequency (see Figure 62)
11111 = Maximum thermal feedback frequency (see Figure 62)
ATTENUATION (dB)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Table 10. Gain Control Register Controls
GAIN (dB)
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
–1
–2
–3
–4
–5
–6
REGISTER SETTING (Address = 02h)
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
1Ah
1Bh
1Ch
1Dh
1Eh
1Fh
20h-3Fh
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