Datasheet

MAX11014/MAX11015
Automatic RF MESFET Amplifier
Drain-Current Controllers
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Pin Description (continued)
PIN NAME FUNCTION
30 RCS2+
Channel 2 Current-Sense-Resistor Connection. Connect to the external supply powering channel 2’s
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+.
33 RCS1+
Channel 1 Current-Sense-Resistor Connection. Connect to the external supply powering channel 1’s
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.
45 CS/A0
Chip-Select Input in SPI Mode/Address Select 0 in I
2
C Mode. CS is an active-low input. When CS is
low, the serial interface is enabled. When CS is high, DOUT is high impedance. Connect A0 to DV
DD
or DGND to set the device address in I
2
C mode.
46 SPI/I2C
SPI-/I
2
C-Interface Select Input. Connect SPI/I2C to DV
DD
to select SPI mode. Connect SPI/I2C to
DGND to select I
2
C mode.
47 N.C./A2
No Connection in SPI Mode/Address Select 2 in I
2
C Mode. Connect A2 to DV
DD
or DGND to set the
device address in I
2
C mode.
48
SCLK/SCL
Serial Clock Input. Clocks data in and out of the serial interface. (Duty cycle must be 40% to 60%.)
Connect a pullup resistor to SCL in I
2
C 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.