MAX2078CTK+ Maxim Integrated Products, MAX2078CTK+ Datasheet - Page 12

• 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

-0.25
-0.75
1.25
0.75
0.25
Octal-Channel Ultrasound Front-End
with CW Doppler Mixers
( 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
12
45
35
25
15
AND BACK TO 500mV
(V
L
IN
0
0
= 1kΩ differential, R
= 500mV
______________________________________________________________________________________
LNA OVERLOAD RECOVERY TIME
GAIN = 10dB
GROUP DELAY vs. FREQUENCY
500
GAIN = 30dB
5
P-P
INPUT
FREQUENCY (MHz)
OUTPUT
for 1µs TO 100mV
TIME (ns)
P-P
1000
10
for 1µs, GAIN = 10dB)
GAIN = 20dB
S
GAIN = 40dB
= 200Ω, CI_, CQ_ pulled up to 11V through four separate 0.1% 162Ω resistors, the rise/fall time of the LVDS
1500
15
P-P
REF
MAX2078 toc19
for 1µs
CC1
= 2.475V to 2.525V, V
2000
20
0.5
0
-0.5
-1.0
-1.5
= 3.3V, V
CC2
-48
-52
-56
-60
-64
AND BACK TO 40mV
-1
-2
Typical Operating Characteristics (continued)
3
2
1
0
(V
0
0
= 5V, T
IN
V
IN
VGA OVERLOAD RECOVERY TIME
= 40mV
= 100mV
CC1
CW IMD3 vs. FREQUENCY
IN
500
A
2
= 200Ω, LNA gain = 18.5dB), D45/D44 = 1/1 (f
= 3.13V to 3.47V, V
= +25°C, unless otherwise noted.)
P-P
P-P
OUTPUT
FREQUENCY (MHz)
for 1µs TO 4mV
INPUT
P-P
TIME (ns)
1000
4
for 1µs, GAIN = 42.5dB)
1500
6
P-P
MAX2078 toc20
for 1µs
CC2
2000
8
= 4.5V to 5.25V, T
0.05
-0.05
-0.10
-0.15
0
1.48
1.44
1.40
1.36
1.32
1.28
45
36
27
18
9
0
0
0
f
OFFSET = 1kHz
GAIN = 10dB
CLUTTER
A
NORMAL POWER MODE
= 0°C to +70°C, V
vs. INPUT CLUTTER VOLTAGE
INPUT CLUTTER VOLTAGE (mV
OVERDRIVE PHASE DELAY
INPUT-REFERRED NOISE
C
= 1.25MHz
50
5
= 18MHz), f
vs. FREQUENCY
FREQUENCY (MHz)
INPUT = 30mV
100
INPUT = 300mV
10
LOW-POWER MODE
RF
GND
150
= f
15
P-P
P-P
P-P
LO
= 0V,
)
/16
200
20