Rainbow Electronics MAX1386 - Manual (Page 15)

MAX1385/MAX1386
Dual RF LDMOS Bias Controllers
with I 2 C/SPI Interface
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Pin Description
PIN NAME FUNCTION
1 DGND Digital Ground
2 SAFE1
Safe Status Channel 1 Output. Programmable active-high or active-low. SAFE1 asserts when
programmed channel 1 temperature threshold or current threshold has been reached.
3 A0/ CSB
I 2 C-Compatible Address 0/ SPI-Compatible Chip Select. See the Digital Serial Interface section. In
SPI mode, drive A0/ CSB low to select the device.
4 CNVST
Active-Low Conversion-Start Input. Drive CNVST low to start a conversion (clock modes 01 and 11).
Connect CNVST to DV
DD when initiating conversions through the serial interface (clock mode 00).
5 SEL Mode Select. Connect SEL to DGND to select I 2 C mode. Connect SEL to DV
DD
to select SPI mode.
6 ALARM
Alarm Output. Program ALARM for comparator or interrupt output modes (see the Alarm Modes
section). Program ALARM to assert on any combination of channel temperature or current
thresholds.
7 SAFE2
Safe Status Channel 2 Output. Programmable active-high or active-low. SAFE2 asserts when
programmed channel 2 temperature threshold or current threshold has been reached.
8, 19, 25, 28,
35–39, 42, 46
N.C. No Connection. Not internally connected.
9 REFDAC DAC Reference Input/Output
10 REFADC ADC Reference Input/Output
11 DXP1
Diode Positive Input 1. Connect to anode of temperature diode or the base and collector of an npn
transistor.
12 DXN1 Diode Negative Input 1. Connect to cathode of temperature diode or the emitter of an npn transistor.
13 DXP2
Diode Positive Input 2. Connect to anode of temperature diode or the base and collector of an npn
transistor.
14 DXN2 Diode Negative Input 2. Connect to cathode of temperature diode or the emitter of an npn transistor.
15 ADCIN1 ADC Input 1
16 ADCIN2 ADC Input 2
17 PGAOUT2 Programmable-Gain Amplifier Output 2
18 AV DD Analog Power-Supply Input
20, 21, 22 AGND Analog Ground