Ultrasound VGA Integrated

with CW Octal Mixer

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5

AC ELECTRICAL CHARACTERISTICS—CW MIXER MODE (continued)

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Maximum Output Voltage at

Clamp ON

VG_CLAMP_MODE = 0,

VG_CTL set for +20dB of gain,

2.2

differential

Maximum Output Voltage at

Clamp OFF

VG_CLAMP_MODE = 1,

VG_CTL set for +20dB of gain,

3.4

differential

CW MIXER MODE

Mixer RF Frequency Range

0.9

7.6

MHz

Mixer LO Frequency Range

1

7.5

MHz

Mixer IF Frequency Range

100

kHz

Maximum Input Voltage Range

1.8

differential

CW_FILTER = 0

633

Differential Input Resistance

CW_FILTER = 1

1440

Ω

differential measured at the mixer input

6

Input-Referred Noise Voltage

Mode 3, RF terminated into 50

Ω;

4.6

nV/√Hz

Third-Order Intermodulation

Distortion

IMD3

-50

dBc

Mixer Output Voltage Compliance

(Note 11)

4.75

12.00

V

Channel-to-Channel Phase

Matching

Measured under zero beat conditions,

±3

Degrees

Channel-to-Channel Gain

Matching

Measured under zero beat conditions,

±2

dB

CW_FILTER = 1

differential,

2.8

Transconductance

(Note 13)

CW_FILTER = 0

(low LPF cutoff

frequency)

differential,

2.8

mS