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MAX2078 Datasheet(PDF) 7 Page - Maxim Integrated Products

Part # MAX2078
Description  Octal-Channel Ultrasound Front-End with CW Doppler Mixers
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX2078 Datasheet(HTML) 7 Page - Maxim Integrated Products

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Octal-Channel Ultrasound Front-End
with CW Doppler Mixers
_______________________________________________________________________________________
7
AC ELECTRICAL CHARACTERISTICS—CW MODE (continued)
(
Typical Application Circuit, V/C = 0, PD = 0, NP = 0, CLP = 0, D43/D42/D41/D40 = 1/0/1/0 (RIN = 200Ω, LNA gain = 18.5dB), fRF =
fLO/16 = 5MHz, RS = 200Ω, CI_, CQ_ pulled up to 11V through four separate 0.1% 162Ω resistors, the rise/fall time of the LVDS clock
driving the LO_ is required to be 0.5ns, reference noise less than 10nV/√Hz from 1kHz to 20MHz (Note 9). Typical values are at VCC1
= 3.3V, VCC2 = 4.75V, TA = +25°C, unless otherwise noted.) (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Two-Tone Intermodulation IMD3
at 100mV
fRF1 = 5MHz, 0.1VP-P, fRF2 = 5.01MHz at -25dBc,
fLO = 80MHz (Note 8)
-50
-55
dBc
Two-Tone Intermodulation IMD3
at 200mV
fRF1 = 5MHz, 0.2VP-P, fRF2 = 5.01MHz at -25dBc,
fLO = 80MHz (Note 8)
-48.5
dBc
Mixer Output-Voltage
Compliance
Valid voltage range (AC + DC) on summed mixer output
pins
4.5
12
V
Channel-to-Channel Phase
Matching
Measured under zero beat conditions, VRF = 100mVP-P,
fRF = 5MHz, fLO = 80MHz (Note 10)
±0.4
Degrees
Channel-to-Channel Gain
Matching
Measured under zero beat conditions, VRF = 100mVP-P,
fRF = 5MHz, fLO = 80MHz (Notes 10, 11)
±0.2
dB
fRF = 0.9MHz,
fLO/16 = 1MHz
19
23
26
Transconductance
Calculated from LNA input voltage
and twice the I or Q current
fRF = 7.6MHz,
fLO/16 = 7.5MHz
19
22.5
26
mS
LOW-POWER MODE (CLP = 1)
Noise Figure
No carrier
3.2
dB
Noise Figure at 100mVP-P Input
100mVP-P on input, fRF = fLO/16 = 1.25MHz, measured
at 1kHz offset
3.5
dB
Noise Figure at 200mVP-P Input
200mVP-P on input, fRF = fLO/16 = 1.25MHz, measured
at 1kHz offset
4.3
dB
SNR at 100mVP-P Input
100mVP-P on input, fRF = fLO/16 = 1.25MHz, measured
at 1kHz offset
-148.2
dBc/Hz
SNR at 200mVP-P Input
200mVP-P on input, fRF = fLO/16 = 1.25MHz, measured
at 1kHz offset
-153.6
dBc/Hz
Two-Tone Intermodulation IMD3
fRF1 = 5MHz, 0.1VP-P, fRF2 = 5.01MHz at -25dBc,
fLO = 80MHz (Note 8)
-44
dBc
Mixer Output-Voltage Compliance
Valid voltage range on summed mixer output pins (Note 12)
4.5
12
V
fRF = 1.1MHz,
fLO/16 = 1MHz
19
21.5
26
Transconductance (Note 13)
Calculated from LNA input voltage
and twice the I or Q current
fRF = 7.6MHz,
fLO/16 = 7.5MHz
19
21.5
26
mS


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