Rainbow-electronics MAX1386 Manual do Utilizador descarregar pdf (Página 2)

MAX1385/MAX1386

Dual RF LDMOS Bias Controllers

with I

C/SPI Interface

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

to AGND .........................................................-0.3V to +6V

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

to GATEGND .........................................-0.3V to +12V

GATE1, GATE2 to GATEGND...........-0.3V to (GATEV

+ 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

+ 0.3V)

Digital Inputs

to DGND ............-0.3V to the lower of +6V and (DV

+ 0.3V)

SDA/DIN, SCL to DGND...........................................-0.3V to +6V

Digital Outputs to DGND .........................-0.3V to (DV

+ 0.3V)

Maximum Continuous Current into Any Pin ........................50mA

Continuous Power Dissipation (T

= +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

ELECTRICAL CHARACTERISTICS

(GATEV

= +5.5V for the MAX1385, GATEV

= +11V for the MAX1386, AV

= DV

= +5V, external V

REFADC

= +2.5V, external V

REF-

DAC

= +2.5V, C

REF

= 0.1µF, unless otherwise noted. T

= -40°C to +85°C, unless otherwise noted. Typical values are at T

= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

HIGH-SIDE CURRENT SENSE WITH PGA

Common-Mode Input Voltage

Range

CS+

, V

CS-

530V

Common-Mode Rejection Ratio CMRR 11V < V

CS+

< 30V 90 dB

CS+

SENSE

< 100mV over the common-mode

range

120 195

Input-Bias Current

CS-

0.002 ±2

µA

PGA gain = 25 0 100

PGA gain = 10 0 250Full-Scale Sense Voltage Range

SENSE

VCS_+ -

VCS_-

PGA gain = 2 0 1250

PGA gain = 25 75 100

PGA gain = 10 75 250

Sense Voltage Range for

Accuracy of ±0.5% V

SENSE

PGA gain = 2 75 1250

PGA gain = 25 20 100

PGA gain = 10 20 250

Sense Voltage Range for

Accuracy of ±2% V

SENSE

PGA gain = 2 20 1250

Total PGAOUT Voltage Error V

SENSE

= 75mV ±0.1 ±0.5 %

PGAOUT Capacitive Load C

PGAOUT

100 pF

PGAOUT Settling Time t

HSCS

Settles to within ±0.5% of final value, R

50Ω, C

GATE

= 15pF

< 25 µs

Saturation Recovery Time

Settles to within ±0.5% accuracy; from

SENSE

= 3 x full scale

< 45 µs

PGA

= 2 0.5

PGA

= 10 2

Sense-Amplifier Slew Rate

PGA

= 25 2

V/µs

1 2 3 4 5 6 7 ... 51 52

MAX1385/MAX1386 1
C/SPI Interface 1

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