MAX1385BUTM+ Maxim Integrated Products, MAX1385BUTM+ Datasheet - Page 24

• 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
Flag register. Configure ALARM for open-drain/push-
pull and active-high/active-low by setting the respective
bits in the Hardware Alarm Configuration register.
Set up the SAFE1 and SAFE2 outputs to allow Wired-
OR/AND-type logic functions or to create additional
interrupt-type signals to replace or supplement the
existing ALARM output. SAFE1 and SAFE2 do not have
any internal pullup/pulldown devices.
The SAFE1 and SAFE2 output buffers are CMOS-com-
patible, noninverting, output buffers capable of driving
to within 0.5V of either digital rail. The SAFE1 and
SAFE2 outputs power up as active-high CMOS outputs
with standard logic levels. Configure the SAFE1 and
SAFE2 outputs for open-drain or push-pull by setting
the appropriate bits in the Hardware Alarm
Configuration register. When configuring SAFE1 and
SAFE2 as open-drain outputs, an external pullup resis-
tor is required.
Figure 7. Window-Threshold-Mode Diagram
24
______________________________________________________________________________________
2
ALARM OUTPUT ASSERTED
ALARM OUTPUT ASSERTED
FALLS BELOW THIS LEVEL
WHEN MEASURED VALUE
WHEN MEASURED VALUE
RISES ABOVE THIS LEVEL
C/SPI Interface
BUILT-IN 8 TO 64 LSBs
BUILT-IN 8 TO 64 LSBs
*ONLY WHEN ALARM IS CONFIGURED FOR OUTPUT-COMARATOR MODE.
WHEN IN OUTPUT-INTERRUPT MODE, FLAG REGISTER MUST BE READ
FOR ALARM TO BE DEASSERTED.
OF HYSTERESIS
OF HYSTERESIS
SAFE1/SAFE2 Outputs
RANGE OF VALUES THAT DO NOT CAUSE AN ALARM
The BUSY output is forced high to show that the
MAX1385/MAX1386 are busy for a variety of reasons:
• The ADC is in the middle of a user-commanded con-
• The ADC is in the middle of an internally triggered
• The device is in the middle of DAC calibra-
• The device is in the middle of power-up initialization
• One of the PGA channels is undergoing self-calibration
The serial interface remains active regardless of the
state of the BUSY output. Wait until BUSY goes low to
read the current conversion data from the FIFO. When
BUSY is high as a result of an ADC conversion, do not
enter a second conversion command until BUSY has
gone low to indicate the previous conversion is com-
plete. The rising edge of BUSY occurs on the next inter-
nal oscillator clock after the start of a new conversion
(either by CNVST or an interface command).
version cycle (but not in continuous convert mode)
conversion cycle (for a self-calibration measurement)
tion calculations
ALARM OUTPUT DEASSERTED
WHEN MEASURED VALUE RISES
ABOVE THIS LEVEL*
ALARM OUTPUT DEASSERTED
WHEN MEASURED VALUE FALLS
BELOW THIS LEVEL*
LOW THRESHOLD
HIGH THRESHOLD
LOWEST POSSIBLE THRESHOLD
VALUE (DEFAULT VALUE FOR HIGH
THRESHOLD REGISTER)
HIGHEST POSSIBLE THRESHOLD
VALUE (DEFAULT VALUE FOR HIGH
THRESHOLD REGISTER)
BUSY Output