MAX2078CTK+ Maxim Integrated Products, MAX2078CTK+ Datasheet - Page 11

• Manufacturer Part Number: MAX2078CTK+
• Description: IC FRNT-END ULTRASOUND 8CH 68QFN
• Manufacturer: Maxim Integrated Products
• Type: Ultrasound Receiversr

Specifications of MAX2078CTK+

• Applications: Medical Ultrasound Imaging, Sonar
• Mounting Type: Surface Mount
• Package / Case: 68-TQFN Exposed Pad
• Operating Supply Voltage: 3.13 V to 3.47 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

( Typical Application Circuit , V
NP = 0, PD = 0, CLP = 0, D43/D42/D41/D40 = 1/0/1/0 (R
= 5MHz, capacitance to GND at each of the VGA differential outputs is 25pF, differential capacitance across VGA outputs is 15pF,
R
clock driving the LO_ is required to be 0.5ns, reference noise less than 10nV/√Hz from 1kHz to 20MHz, DOUT loaded with 10MΩ
and 60pF. Typical values are at V
L
= 1kΩ differential, R
-20
-40
-60
-80
-10
-20
30
20
10
0
0
TWO-TONE ULTRASOUND-SPECIFIC IMD3
0
1
V
GAIN = 26dB
V
GAIN = 20dB
OUT
OUT
LARGE-SIGNAL BANDWIDTH
= 1V
= 1V
P-P
5
P-P
vs. FREQUENCY
vs. FREQUENCY
FREQUENCY (MHz)
FREQUENCY (MHz)
9MHz
______________________________________________________________________________________
______________________________________________________________________________________
10MHz
10
10
S
= 200Ω, CI_, CQ_ pulled up to 11V through four separate 0.1% 162Ω resistors, the rise/fall time of the LVDS
REF
15
15MHz
Octal-Channel Ultrasound Front-End
CC1
= 2.475V to 2.525V, V
18MHz
= 3.3V, V
100
20
CC2
Typical Operating Characteristics (continued)
-50
-55
-60
-65
-70
1.9
1.8
1.7
1.6
1.5
= 5V, T
8
8
V
f
RF
COMMON-MODE OUTPUT VOLTAGE
ADJACENT CHANNEL-TO-CHANNEL
OUT
CC1
= 10MHz
IN
= 1V
A
= 200Ω, LNA gain = 18.5dB), D45/D44 = 1/1 (f
= 3.13V to 3.47V, V
17
17
= +25°C, unless otherwise noted.)
CROSSTALK vs. GAIN
P-P
ADJACENT CHANNEL 1
ADJACENT CHANNEL 2
vs. GAIN
GAIN (dB)
GAIN (dB)
with CW Doppler Mixers
26
26
35
35
CC2
= 4.5V to 5.25V, T
44
44
180
120
-30
-60
-90
60
0
0
1
0
DIFFERENTIAL OUTPUT IMPEDANCE
V
GAIN = 20dB
ADJACENT CHANNEL-TO-CHANNEL
OUT
ADJACENT CHANNEL 1
A
CROSSTALK vs. FREQUENCY
= 1V
10
= 0°C to +70°C, V
P-P
IMAGINARY
C
vs. FREQUENCY
FREQUENCY (MHz)
FREQUENCY (MHz)
= 18MHz), f
20
10
ADJACENT CHANNEL 2
30
RF
REAL
GND
40
= f
MAX2078 toc18
LO
= 0V,
/16
100
11
11
50
80
60
40
20
0