MAX11014_08 Datasheet, PDF (34/70 Pages) Maxim Integrated Products – Automatic RF MESFET Amplifier Drain-Current Controllers

Automatic RF MESFET Amplifier
Drain-Current Controllers
Table 6. IH1 and IH2 (Read/Write)
BIT
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
RESET
STATE
X
X
X
X
1
1
1
1
1
1
1
1
1
1
1
1
BIT VALUE X
X
X
X MSB — — — — — — — — — — LSB
X = Don’t care.
Table 7. IL1 and IL2 (Read/Write)
BIT
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
RESET
STATE
X
X
X
X
0
0
0
0
0
0
0
0
0
0
0
0
BIT VALUE X
X
X
X MSB — — — — — — — — — — LSB
X = Don’t care.
Table 8. VH1 and VH2 (Read/Write)
BIT
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
RESET
STATE
X
X
X
X
1
1
1
1
1
1
1
1
1
1
1
1
BIT VALUE X
X
X
X MSB — — — — — — — — — — LSB
X = Don’t care.
Following the command byte, read 12 bits of data from
bits D11–D0. Bits D15–D12 are don’t care. Sense volt-
age data must be written and read in straight binary
format. See Table 6. The POR value of the high sense
voltage ALARM threshold registers is 1111 1111 1111.
See Figures 25 and 27 for ALARM examples.
The sense voltage is measured between RCS_+ and
RCS_-. A reading of 1111 1111 1111 corresponds to
V_REFDAC / 4. A reading of 0000 0000 0000 corre-
sponds to 0mV.
IL1 and IL2 (Read/Write)
Set the channel 1 and channel 2 low sense voltage
ALARM thresholds by writing command bytes 26h and
32h, respectively. Following the command byte, write
12 bits of data to bits D11–D0. Read the low sense volt-
age channel 1 and channel 2 ALARM thresholds by
writing command bytes A6h and B2h, respectively.
Following the command byte, read 12 bits of data from
bits D11–D0. Bits D15–D12 are don’t care. Sense volt-
age data must be written and read in straight binary
format. See Table 7. The POR value of the low sense
voltage ALARM threshold registers is 0000 0000 0000.
See Figures 25 and 27 for ALARM examples.
The sense voltage is measured between RCS_+ and
RCS_-. A reading of 1111 1111 1111 corresponds to
V_REFDAC / 4. A reading of 0000 0000 0000 corre-
sponds to 0mV.
VH1 and VH2 (Read/Write)
Set the channel 1 and channel 2 high GATE voltage
ALARM thresholds by writing command bytes 28h and
34h, respectively. Following the command byte, write
12 bits of data to bits D11–D0. Read the high GATE
voltage channel 1 and channel 2 ALARM thresholds by
writing command bytes A8h and B4h, respectively.
Following the command byte, read 12 bits of data from
bits D11–D0. Bits D15–D12 are don’t care. Voltage data
must be written and read in straight binary format. See
Table 8. The POR value of the high GATE voltage
ALARM threshold registers is 1111 1111 1111. See
Figure 7 for a GATE voltage example. See Figures 25
and 27 for ALARM examples.
VL1 and VL2 (Read/Write)
Set the channel 1 and channel 2 low GATE voltage
ALARM thresholds by writing command bytes 2Ah and
36h, respectively. Following the command byte, write
12 bits of data to bits D11–D0. Read the low GATE volt-
age channel 1 and channel 2 ALARM thresholds by
writing command bytes AAh and B6h, respectively.
Following the command byte, read 12 bits of data from
bits D11–D0. Bits D15–D12 are don’t care. Voltage data
must be written and read in straight binary format. See
Table 9. The POR value of the low GATE voltage
ALARM threshold registers is 0000 0000 0000. See
Figure 7 for a GATE voltage example. See Figures 25
and 27 for ALARM examples.
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