MAX11014 Datasheet, PDF (15/69 Pages) Maxim Integrated Products – Automatic RF MESFET Amplifier Drain-Current Controllers

Automatic RF MESFET Amplifier
Drain-Current Controllers
Pin Description (continued)
PIN
NAME
FUNCTION
Channel 2 Current-Sense-Resistor Connection. Connect to the external supply powering channel 2’s
30
RCS2+ MESFET drain, in the range of +0.5V to +11V (MAX11014) or +5V to +32V (MAX11015). Bypass with
a 1µF and a 0.1µF capacitor in parallel to AGND. If unused, connect to RCS1+.
31
RCS2-
Channel 2 Current-Sense-Resistor Connection. Connect to the channel 2 MESFET drain. Decouple as
required by the application. If unused, connect to RCS2+.
32
RCS1-
Channel 1 Current-Sense-Resistor Connection. Connect to the channel 1 MESFET drain. Decouple as
required by the application. If unused, connect to RCS1+.
Channel 1 Current-Sense-Resistor Connection. Connect to the external supply powering channel 1’s
33
RCS1+ MESFET drain, in the range of +0.5V to +11V (MAX11014) or +5V to +32V (MAX11015). Bypass with
a 1µF and a 0.1µF capacitor in parallel to AGND. If unused, connect to RCS2+.
38
OPSAFE1
Operating Safe Channel 1 Input. Set OPSAFE1 high to clamp GATE1 to ACLAMP1 for fast protection
of enhancement FET power transistors.
39
OPSAFE2
Operating Safe Channel 2 Input. Set OPSAFE2 high to clamp GATE2 to ACLAMP2 for fast protection
of enhancement FET power transistors.
40
BUSY
BUSY Output. BUSY asserts high under certain conditions when the device is busy. See the BUSY
Output section.
41
DV_DD
Digital Supply Voltage. Set DV_DD between +2.7V and AV_DD. Bypass with a 1µF and a 0.1µF capacitor
in parallel to DGND.
42
DGND Digital Ground
43
CNVST
Active-Low Conversion Start Input. Set CNVST low to begin a conversion in clock modes 01 and 11.
Connect CNVST to DV_DD when issuing conversion commands through the serial interface.
44
ALARM
Alarm Output. ALARM asserts when the temperature or voltage measurements exceed their preset
high or low thresholds.
Chip-Select Input in SPI Mode/Address Select 0 in I²C Mode. CS is an active-low input. When CS is
45
CS/A0 low, the serial interface is enabled. When CS is high, DOUT is high impedance. Connect A0 to DVDD
or DGND to set the device address in I²C mode.
46
SPI/I2C
SPI-/I²C-Interface Select Input. Connect SPI/I2C to DV_DD to select SPI mode. Connect SPI/I2C to
DGND to select I²C mode.
47
N.C./A2
No Connection in SPI Mode/Address Select 2 in I²C Mode. Connect A2 to DV_DD or DGND to set the
device address in I²C mode.
Serial Clock Input. Clocks data in and out of the serial interface. (Duty cycle must be 40% to 60%.)
48
SCLK/SCL Connect a pullup resistor to SCL in I²C mode. See Table 10 for details on programming the clock
mode.
—
EP
Exposed Pad. Connect to AGND and a large copper plane to meet power dissipation specifications.
Do not use as a ground connection.
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