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Dual RF LDMOS Bias Controllers
with I 2 C/SPI Interface
ELECTRICAL CHARACTERISTICS (continued)
(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
Capacitive Bypass at REF
270
nF
Power-Supply Rejection Ratio
PSRR
AV DD = +5V ±5%
70
dB
EXTERNAL REFERENCE
REFADC Input Voltage Range
REFADC Input Current
REFDAC Input Voltage Range
REFDAC Input Current
V REFADC
I REFADC
V REFDAC
Limited code test
V REF = 2.5V, f SAMPLE = 174ksps
Acquisition/between conversions
(Note 9)
Static current when no DAC calibration
1.0
0.5
60
±0.01
0.1
AV DD
80
±1
2.5
V
μA
V
μA
GATE-DRIVER COARSE-DAC DC ACCURACY
Resolution
N CDAC
8
Bits
Integral Nonlinearity
INL CDAC
Measured at GATE; fine DAC set at full scale
±0.15
±1
LSB
Differential Nonlinearity
DNL CDAC Guaranteed monotonic
±0.05
±0.5
LSB
GATE-DRIVER FINE-DAC DC ACCURACY
Resolution
N FDAC
10
Bits
Integral Nonlinearity
INL FDAC
Measured at GATE; coarse DAC set at full
scale
±0.25
±4
LSB
Differential Nonlinearity
DNL FDAC Guaranteed monotonic
±0.1
±1
LSB
POWER SUPPLIES (Note 10)
Analog Supply Voltage
Digital Supply Voltage
Gate-Drive Supply Voltage
AV DD
DV DD
V GATEVDD
4.75
2.7
4.75
5.25
AV DD
+ 0.3
11.00
V
V
V
Analog Supply Current
Digital Supply Current
GATEV DD Supply Current
I AVDD
I DVDD
I GATEVDD
AV DD = 5V
DV DD = 2.7V to 5.25V
3
3.2
3.1
4.5
4
4.3
7
mA
mA
mA
I AVDD
0.1
2
Shutdown Current (Note 11)
I PD
I DVDD
0.1
2
μA
I VDDGATE
0.1
2
_______________________________________________________________________________________
5
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