MAX2079 查看數據表（PDF） - Maxim Integrated

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MAX2079

Low-Power, High-Performance, Fully Integrated Octal Ultrasound Receiver (Octal LNA, VGA, AAF, ADC, and CWD Beamformer)

Maxim Integrated 

MAX2079

Low-Power, High-Performance, Fully Integrated

Octal Ultrasound Receiver (Octal LNA, VGA,

AAF, ADC, and CWD Beamformer)

Typical Operating Characteristics (continued)

(Typical values are at VREF = 2.5V, VCC3 = 3.3V, VCC5 = 4.75V, VAVDD = VOVDD = 1.8V, VGC+ - VGC- = 0V, TA = +25°C, unless

otherwise noted.) (Note 3)

VGA GAIN CONTROL

RESPONSE TIME (DOWN)

4096

GC+/- TRANSITION AT t = 0

GAINMAX TO GAINMIN

3072

DIGITAL HIGHPASS FILTER NORMALIZED

MAGNITUDE RESPONSES

vs. FREQUENCY—FIRST SECTION (HPF1)

10

R1 = BYPASS

5 R1 = 63/64

0

-5

2048

-10

1024

0

-2 -1 0 1 2 3 4 5 6 7 8

TIME (µs)

DIGITAL HIGHPASS FILTER NORMALIZED

MAGNITUDE RESPONSES

vs. FREQUENCY—SECOND SECTION (HPF2)

10

R2 = BYPASS

5 R2 = 63/64

0

-5

-10

-15

-20

-25

0.1

R2 = 54/64

1

FREQUENCY (MHz)

-15

-20

R1 = 54/64

-25

0.1

1

FREQUENCY (MHz)

DIGITAL HIGHPASS FILTER NORMALIZED

MAGNITUDE RESPONSES vs. FREQUENCY—

TWO CASCADED SECTIONS (HPF1 + HPF2)

10

5

R1 = R2 = BYPASS

R1 = R2 = 63/64

0

-5

-10

-15

-20

-25

-30

-35

-40

R1 = R2 = 54/64

-45

-50

0.1

1

FREQUENCY (MHz)

Maxim Integrated

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