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MAX2036CCQ-D

Ultrasound VGA Integrated with CW Octal Mixer

Maxim Integrated 

Ultrasound VGA Integrated

with CW Octal Mixer

AC ELECTRICAL CHARACTERISTICS—CW MIXER MODE (continued)

(Figure 7, VCC = VREF = 4.75V to 5.25V, TA = 0°C to +70°C, VGND = 0V, LOW_PWR = 0, M4_EN = 0, CW_FILTER = 1, TEST_MODE =

0, PD = 0, CW_VG = 0, CW_M1 = 0, CW_M2 = 0, VG_CLAMP_MODE = 1, fRF = fLO/16 = 5MHz, capacitance to GND at each of the

VGA differential outputs is 60pF, differential capacitance across the VGA outputs is 10pF, RL = 1kΩ, CW mixer outputs pulled up to

+11V through four separate ±0.1% 115Ω resistors, differential mixer inputs are driven from a low-impedance source. Typical values

are at VCC = VREF = 5V, TA = +25°C, unless otherwise noted.) (Note 2)

PARAMETER

Maximum Output Voltage at

Clamp ON

Maximum Output Voltage at

Clamp OFF

CW MIXER MODE

Mixer RF Frequency Range

Mixer LO Frequency Range

Mixer IF Frequency Range

SYMBOL

CONDITIONS

VG_CLAMP_MODE = 0,

VG_CTL set for +20dB of gain,

350mVP-P differential input

VG_CLAMP_MODE = 1,

VG_CTL set for +20dB of gain,

350mVP-P differential input

MIN TYP MAX UNITS

2.2

VP-P

differential

3.4

VP-P

differential

0.9

7.6

MHz

1

7.5

MHz

100

kHz

Maximum Input Voltage Range

Differential Input Resistance

Input-Referred Noise Voltage

CW_FILTER = 0

CW_FILTER = 1

Mode 3, fRF = fLO/4 = 1.25MHz, measured at a

1kHz offset frequency; clutter tone at 0.9VP-P

differential measured at the mixer input

Mode 3, RF terminated into 50Ω;

fLO/4 = 1.25MHz, measured at 1kHz offset

633

1440

6

4.6

1.8

VP-P

differential

Ω

nV/√Hz

Third-Order Intermodulation

Distortion

IMD3

Mode 1, fRF1 = 5MHz at 0.9VP-P differential

input, Doppler tone fRF2 = 5.01MHz at 25dBc

from clutter tone, fLO/16 = 5MHz (Note 10)

-50

dBc

Mixer Output Voltage Compliance

Channel-to-Channel Phase

Matching

Channel-to-Channel Gain

Matching

Transconductance

(Note 13)

(Note 11)

Measured under zero beat conditions,

fRF = 5MHz, fLO/16 = 5MHz (Note 12)

Measured under zero beat conditions,

fRF = 5MHz, fLO/16 = 5MHz (Note 12)

CW_FILTER = 1

fRF = 1.1MHz at 1VP-P

differential,

fLO/16 = 1MHz

CW_FILTER = 0

(low LPF cutoff

frequency)

fRF = 1.1MHz at 1VP-P

differential,

fLO/16 = 1MHz

4.75

12.00

V

±3

Degrees

±2

dB

2.8

mS

2.8

_______________________________________________________________________________________ 5

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