MAX1385 Datasheet, PDF (11/52 Pages) Maxim Integrated Products – Dual RF LDMOS Bias Controllers with I2C/SPI Interface

Dual RF LDMOS Bias Controllers
with I²C/SPI Interface
Typical Operating 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_REFDAC = +2.5V, C_REF = 0.1µF, T_A = +25°C, unless otherwise noted.)
AV_DD SUPPLY CURRENT
vs. AV_DD VOLTAGE
4.0
3.9 ^{AvPGA = 2}
CMV = 12V
3.8 V_SENSE = 100mV
3.7
3.6
T_A = +85°C
3.5
T_A = +25°C
3.4
3.3
T_A = -40°C
3.2
3.1
3.0
4.7 4.8 4.9 5.0 5.1 5.2 5.3
AV_DD (V)
DV_DD SUPPLY CURRENT vs. DV_DD VOLTAGE
4.00
3.75 ^{AvPGA = 2}
CMV = 12V
3.50 _{VSENSE = 100mV}
3.25
T_A = +85°C
T_A = +25°C
T_A = -40°C
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
2.7 3.2 3.7 4.2 4.7 5.2
DV_DD (V)
GATEV_DD SUPPLY CURRENT
vs. GATEV_DD VOLTAGE
5.0
4.9
Av_PGA = 2
CMV = 12V
4.8 ^VSENSE ^{= 100mV} TA = +85°C
4.7
4.6
T_A = +25°C
4.5
4.4
4.3
T_A = -40°C
4.2
4.1
4.0
4 5 6 7 8 9 10 11 12
GATEV_DD (V)
TOTAL PGAOUT_ ERROR
vs. TEMPERATURE
0.150
0.125
0.100
0.075
Av_PGA = 2
CMV = 12V
V_SENSE = 100mV
0.050
0.025
0
TRACKING
ACQUISITION
-0.025
-0.050
-0.075
-0.100
-0.125
-0.150
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
TOTAL PGAOUT_ ERROR vs. V_SENSE
0.50
Av_PGA = 2
0.45 _{CMV = 12V}
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
0
250 500 750 1000 1250
V_SENSE (mV)
TOTAL PGAOUT_ ERROR vs. V_SENSE
0.5
Av_PGA = 25
0 CMV = 12V
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
-4.0
0
20
40
60
80 100
V_SENSE (mV)
TOTAL PGAOUT_ ERROR
vs. COMMON-MODE VOLTAGE
0.10
0.09
Av_PGA = 2
V_SENSE = 100mV
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0
5
10 15 20 25 30
COMMON-MODE VOLTAGE (V)
PGAOUT_ OFFSET VOLTAGE
vs. TEMPERATURE
200
150 ^{AvPGA = 2}
CMV = 12V
100 _{VSENSE = 100mV}
50
ACQUISITION
0
-50 ^TRACKING
-100
-150
-200
-250
-300
-350
-400
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
VSENSE TRANSIENT RESPONSE
MAX1385/86 toc09
100mV/div
V_SENSE
PGAOUT_
1V/div
10μs/div
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