MAX2035 Maxim Integrated Products, MAX2035 Datasheet - Page 7

• Manufacturer Part Number: MAX2035
• Description: Ultrasound Variable Gain Amplifier
• Manufacturer: Maxim Integrated Products

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(Figure 2, V
VGA differential outputs is 60pF, differential capacitance across the VGA outputs is 10pF, R
ues are at V
-100
-40
-45
-50
-55
-60
-65
-70
-75
-80
-85
-90
-95
vs. DIFFERENTIAL OUTPUT LOAD RESISTANCE
200
V
f = 5MHz, GAIN = 20dB
OUT
500
DIFFERENTIAL OUTPUT LOAD (Ω)
= 1V
CC
HARMONIC DISTORTION
CC
-100
100
-25
-50
-75
-10
-20
-30
-40
-50
-60
-70
75
50
25
P-P
SECOND HARMONIC
0
0
OUTPUT COMMON-MODE OFFSET VOLTAGE
= V
800
= V
-15
TWO-TONE ULTRASOUND-SPECIFIC IMD3
DIFFERENTIAL
0
REF
REF
V
GAIN = 20dB
OUT
1100
THIRD HARMONIC
_______________________________________________________________________________________
-5
= 1V
= 4.75V to 5.25V, GND = 0V, PD = 0, VG_CLAMP_MODE = 1, f
= 5V, V
5
P-P
1400
vs. FREQUENCY
FREQUENCY (MHz)
5
DIFFERENTIAL
10
vs. GAIN
GAIN (dB)
CM
1700
15
= 3.0V, T
15
Ultrasound Variable-Gain Amplifier
2000
25
20
A
35
= +25°C, unless otherwise noted.)
-100
vs. DIFFERENTIAL OUTPUT LOAD CAPACITANCE
-40
-45
-50
-55
-60
-65
-70
-75
-80
-85
-90
-95
25
45
Typical Operating Characteristics (continued)
5
V
f = 5MHz, GAIN = 20dB
OUT
DIFFERENTIAL OUTPUT LOAD (pF)
= 1V
25
HARMONIC DISTORTION
P-P
SECOND HARMONIC
DIFFERENTIAL
45
THIRD HARMONIC
65
200
180
160
140
120
100
80
60
50
45
40
35
30
25
20
15
10
5
0
85
0.1
-4.50
DIFFERENTIAL OUTPUT IMPEDANCE
SAMPLE SIZE = 188 UNITS
f
-3.75
IN_
MAGNITUDE vs. FREQUENCY
= 5MHz, GAIN = 20dB
-3.00
105
GAIN ERROR HISTOGRAM
RF
-2.25
FREQUENCY (MHz)
1
-1.50
= 5MHz, capacitance to GND at each of the
GAIN ERROR (dB)
-0.75
L
= 1kΩ, T
-100
0.75
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
1.50
0
10
2.25
V
GAIN = 20dB
OUT
A
3.00
= 1V
10
HARMONIC DISTORTION
= 0°C to +70°C. Typical val-
3.75
P-P
vs. FREQUENCY
FREQUENCY (MHz)
4.50
DIFFERENTIAL
100
20
SECOND HARMONIC
THIRD HARMONIC
30
40
50
7