MAX2079 Просмотр технического описания (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)

AC Electrical Characteristics—CWD Mode (VGA, AAF, and ADC Off)

(VREF = 2.5V, VCC3 = 3.13V to 3.47V, VCC5 = 4.5V to 5.25V, VAVDD = VOVDD = 1.7V to 1.9V, TA = 0NC to +70NC, VGND = 0V,

SHDN = 0, CWD = 1, SHDN = 0, LOON = 1, RIN = 200I, fRF = 5MHz, Source resistance RS = 200I, CI+, CI-, CQ+, CQ- pulled up to

+11V through four separate 0.1% 120I resistors). The rise/fall time of the LVDS clock driving LO+/LO- is required to be 0.5ns, refer-

ence noise less than 10nV/√Hz from 1kHz to 20MHz (Note 10). Typical values are at VCC3 = 3.3V, VCC5 = 4.75V, VAVDD = VOVDD =

1.8V, TA = +25NC, unless otherwise noted.) (Note 3)

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

CW DOPPER MIXER

Mixer RF Frequency Range

0.9

7.6

MHz

LO Frequency Range

8.0

60

MHz

Mixer Output Frequency Range

DC

100

kHz

FULL-POWER MODE

Noise Figure

No carrier

4.8

dB

SNR at 100mVP-P Input

100mVP-P on input, fRF = fLO/8 = 1.25MHz, measured at

1kHz offset

146

dBc/Hz

SNR at 200mVP-P Input

200mVP-P on input, fRF = fLO/8 = 1.25MHz, measured at

1kHz offset

151

dBc/Hz

IM3 Distortion

VIN = 100mVP-P, fRF1 = 5MHz, fRF2 = 5.01MHz,

fLO = 8 x 5MHz (Note 7)

-57

dBc

Mixer Output-Voltage Compliance

Valid voltage range (AC + DC) on summed mixer output

pins (Note12)

4.5

12

V

Channel-to-Channel Phase

Matching

Channel-to-Channel Gain

Matching

Transconductance

LOW-POWER MODE

Noise Figure

SNR at 100mVP-P Input

Measured under zero beat conditions. VIN = 100mVP-P,

fRF = 5MHz, fLO/8 = 5MHz

-1

Measured under zero beat conditions VIN = 100mVP-P,

fRF = 5MHz, fLO/8 = 5MHz

-1

fLO/8 = 1.25MHz (Note 13)

19

No carrier

100mVP-P on input, fRF = fLO/8 = 1.25MHz, measured at

1kHz offset

Q0.5 +1 Degrees

Q0.5 +1

dB

23

26.5

mS

4.8

dB

146

dBc/Hz

SNR at 200mVP-P Input

200mVP-P on input, fRF = fLO/8 = 1.25MHz, measured at

1kHz offset

150

dBc/Hz

IM3 Distortion

VIN = 100mVP-P, fRF1 = 5MHz, fRF2 = 5.01MHz,

fLO = 8 x 5MHz (Note 7)

-44

dBc

Mixer Output-Voltage Compliance

Valid voltage range (AC + DC) on summed mixer output

pins (Note 12)

4.5

12

V

Transconductance

fLO/8 = 1.25MHz (Note 13)

18

22

25.5

mS

Maxim Integrated

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