MAX2078CTK+ Maxim Integrated Products, MAX2078CTK+ Datasheet - Page 9

• 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
180
150
120
90
60
30
45
35
25
15
0
5
-3
8
OUTPUT-REFERRED NOISE vs. GAIN
GAIN vs. DIFFERENTIAL ANALOG
-2
17
CONTROL VOLTAGE
CONTROL VOLTAGE (V)
-1
GAIN (dB)
_______________________________________________________________________________________
_______________________________________________________________________________________
26
S
0
= 200Ω, CI_, CQ_ pulled up to 11V through four separate 0.1% 162Ω resistors, the rise/fall time of the LVDS
1
REF
35
Octal-Channel Ultrasound Front-End
CC1
= 2.475V to 2.525V, V
2
= 3.3V, V
44
3
CC2
1000
800
600
400
200
0
6
5
4
3
2
1
COMPLEX INPUT IMPEDANCE MAGNITUDE
= 5V, T
0
8
INPUT-REFERRED NOISE vs. GAIN
CC1
50Ω
IN
A
= 200Ω, LNA gain = 18.5dB), D45/D44 = 1/1 (f
17
= 3.13V to 3.47V, V
= +25°C, unless otherwise noted.)
5
vs. FREQUENCY
FREQUENCY (MHz)
GAIN (dB)
1kΩ
with CW Doppler Mixers
100Ω
10
26
Typical Operating Characteristics
200Ω
15
35
CC2
= 4.5V to 5.25V, T
20
44
-30
-40
-50
-60
-70
-80
-90
25
20
15
10
5
0
20
GAIN = 20dB
V
OUT
f
RF
SECOND-HARMONIC DISTORTION
= 5MHz
A
= 1V
GAIN ERROR HISTOGRAM
= 0°C to +70°C, V
26
P-P
C
GAIN ERROR (dB)
= 18MHz), f
vs. GAIN
GAIN (dB)
f
RF
f
RF
32
= 10MHz
= 2MHz
RF
38
GND
= f
LO
= 0V,
/16
44
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