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Dual RF LDMOS Bias Controllers
with I 2 C/SPI Interface
ABSOLUTE MAXIMUM RATINGS
AV DD to AGND .........................................................-0.3V to +6V
DV DD to DGND.........................................................-0.3V to +6V
AGND to DGND.....................................................-0.3V to +0.3V
CS1+, CS1-, CS2+, CS2- to GATEGND.................-0.3V to +32V
CS1- to CS1+, CS2- to CS2+ ...................................-6V to +0.3V
GATEV DD to GATEGND .........................................-0.3V to +12V
GATE1, GATE2 to GATEGND ...........-0.3V to (GATEV DD + 0.3V)
SAFE1, SAFE2 to GATEGND....................................-0.3V to +6V
GATEGND to AGND..............................................-0.3V to +0.3V
All Other Analog Inputs
to AGND ............-0.3V to the lower of +6V and (AV DD + 0.3V)
Digital Inputs
to DGND ............-0.3V to the lower of +6V and (DV DD + 0.3V)
SDA/DIN, SCL to DGND...........................................-0.3V to +6V
Digital Outputs to DGND .........................-0.3V to (DV DD + 0.3V)
Maximum Continuous Current into Any Pin ........................50mA
Continuous Power Dissipation (T A = +70°C)
48-Pin, 7mm x 7mm, Thin QFN (derate 27.8 mW/°C
above +70°C).............................................................2222mW
Maximum Junction Temperature .....................................+150°C
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(GATEV DD = +5.5V for the MAX1385, GATEV DD = +11V for the MAX1386, AV DD = DV DD = +5V, external V REFADC = +2.5V, external V REF-
DAC = +2.5V, C REF = 0.1μF, unless otherwise noted. T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
HIGH-SIDE CURRENT SENSE WITH PGA
Common-Mode Input Voltage
Range
Common-Mode Rejection Ratio
V CS+ , V CS-
CMRR
11V < V CS+ < 30V
5
90
30
V
dB
Input-Bias Current
I CS+
V SENSE < 100mV over the common-mode
range
120
195
μA
I CS-
0.002
±2
V SENSE =
PGA gain = 25
0
100
Full-Scale Sense Voltage Range
VCS_+ -
VCS_-
PGA gain = 10
PGA gain = 2
0
0
250
1250
mV
PGA gain = 25
75
100
Sense Voltage Range for
Accuracy of ±0.5% V SENSE
Sense Voltage Range for
Accuracy of ±2% V SENSE
Total PGAOUT Voltage Error
PGAOUT Capacitive Load
C PGAOUT
PGA gain = 10
PGA gain = 2
PGA gain = 25
PGA gain = 10
PGA gain = 2
V SENSE = 75mV
75
75
20
20
20
±0.1
250
1250
100
250
1250
±0.5
100
mV
mV
%
pF
PGAOUT Settling Time
Saturation Recovery Time
t HSCS
Settles to within ±0.5% of final value, R S =
50 ? , C GATE = 15pF
Settles to within ±0.5% accuracy; from
V SENSE = 3 x full scale
< 25
< 45
μs
μs
Av PGA = 2
0.5
Sense-Amplifier Slew Rate
Av PGA = 10
Av PGA = 25
2
2
V/μs
2
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