MAX1385BUTM+ Maxim Integrated Products, MAX1385BUTM+ Datasheet - Page 48

• Manufacturer Part Number: MAX1385BUTM+
• Description: RF Wireless Misc IC RF LDMOS BIAS CNTRLR
• Manufacturer: Maxim Integrated Products

Specifications of MAX1385BUTM+

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Dual RF LDMOS Bias Controllers
with I
limits are within the safe operating area. Configure the
ADC for continuous conversions to allow continuous
measurement and testing against configured alarm
thresholds. Connect SAFE_ to OPSAFE_ to immediately
force the gate drive to GATEGND in the event of an
alarm-related condition (current or temperature).
Table 28. DAC Write Commands Without Autocalibration
Figure 25. ADC Transfer Function
48
Update fine DAC_ without triggering
autocalibration.
Update high wiper coarse DAC_ without
triggering autocalibration.
Update low wiper coarse DAC_ without
triggering autocalibration.
Immediately update fine DAC_ without
triggering autocalibration.
Immediately update high wiper coarse
DAC_ without triggering autocalibration.
Immediately update low wiper coarse
DAC_ without triggering autocalibration.
Update the high, low, and fine components
of DAC_ simultaneously without triggering
autocalibration.
______________________________________________________________________________________
1111 1111 1110
1111 1111 1100
0000 0000 0011
0000 0000 0010
1111 1111 1111
1111 1111 1101
0000 0000 0001
0000 0000 0000
ACTION REQUIRED
2
C/SPI Interface
0
1 LSB =
1
2
V
REFADC
3
4096
FULL-SCALE TRANSITION
INPUT VOLTAGE (LSB)
V
REFADC
4093
Write to FINE_. Write to LDAC to update fine
DAC_.
Write to HIWIPE_ with HCAL set to 0. Write
to LDAC to update high wiper coarse DAC_.
Write to LOWIPE_ with LCAL set to 0. Write
to LDAC to update low wiper coarse DAC_.
Write to FINETHRU_.
Write to THRUHI_.
Write to THRULO_.
Write to HIWIPE_, LOWIPE, and FINE_.
Write to LDAC to update DAC_.
RECOMMENDED COMMAND SEQUENCE
4095
Performing the autocalibration routines requires use of
the internal ADC, the internal ALU, and can also
increase the power dissipation of the part. Tables 28
and 29 detail which commands trigger autocalibration
and which commands do not.
Figure 26. Temperature Transfer Function
0111 1111 1110
0000 0000 0000
1000 0000 0010
0111 1111 1111
0111 1111 1101
0000 0000 0001
1000 0000 0001
1000 0000 0000
1111 1111 1111
-256°C
Write to FINETHRU_ to immediately
update fine DAC_.
Write to THRUHI_ to immediately
update high wiper coarse DAC_.
Write to THRULO_ to immediately
update low wiper coarse DAC_.
None.
None.
None.
None.
Triggering DAC Calibration
OTHER POSSIBLE COMMAND
1 LSB = +0.125°C
TEMPERATURE (°C)
0°C
SEQUENCES
+255.875°C