MAX2077CTN Ver la hoja de datos (PDF) - Maxim Integrated
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MAX2077CTN Datasheet PDF : 19 Pages
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Octal-Channel Ultrasound Front-End
Typical Operating Characteristics (continued)
(Typical Application Circuits, VREF = 2.475V to 2.525V, VCC1 = 3.3V, VCC2 = 4.75V, TA = +25°C, VGND = 0V, NP = 0, PD = 0,
D3/D2/D1/D0 = 1/0/1/0 (RIN = 200Ω, LNA gain = 18.5dB), D5/D4 = 1/1(fC = 18MHz), fRF = 5MHz, RS = 200Ω, capacitance to GND
at each of the VGA differential outputs is 25pF, differential capacitance across VGA outputs is 15pF, RL = 1kΩ differential, reference
noise less than 10nV/√Hz from 1kHz to 20MHz, DOUT loaded with 10MΩ and 60pF, unless otherwise noted.)
THIRD-HARMONIC DISTORTION
vs. GAIN
-30
VOUT = 1VP-P
-40
-50
fRF = 10MHz
-60
-70
-80 fRF = 5MHz
fRF = 2MHz
-90
20
26
32
38
44
GAIN (dB)
TWO-TONE ULTRASOUND-SPECIFIC
IMD3 vs. GAIN
-10
VOUT = 1VP-P
-30
fRF = 10MHz
-50
fRF = 2MHz
-70
fRF = 5MHz
-90
20
26
32
38
44
GAIN (dB)
SECOND- AND THIRD-HARMONIC
DISTORTION vs. VOUT P-P
-50
GAIN = 26dB
fRF = 5MHz
-60
HD2
-70
HD3
-80
-90
0
0.2 0.4 0.6 0.8 1.0
VOUT P-P (V)
SECOND- AND THIRD-HARMONIC
DISTORTION vs. FREQUENCY
-30
VOUT = 1VP-P
GAIN = 26dB
-40
-50
HD2
-60
-70
-80
0
HD3
5
10
15
20
FREQUENCY (MHz)
SECOND- AND THIRD-HARMONIC DISTORTION
vs. DIFFERENTIAL OUTPUT RESISTANCE
-30
VOUT = 1VP-P
-40
GAIN = 26dB
fRF = 5MHz
-50
HD2
-60
-70
HD3
-80
-90
200 300 400 500 600 700 800 900 1000
DIFFERENTIAL OUTPUT RESISTANCE (I)
SECOND- AND THIRD-HARMONIC DISTORTION
vs. DIFFERENTIAL OUTPUT LOAD
CAPACITANCE
-30
VOUT = 1VP-P
-40
GAIN = 26dB
fRF = 5MHz
-50
HD2
-60
-70
HD3
-80
-90
0
20
40
60
80
100
DIFFERENTIAL OUTPUT LOAD CAPACITANCE (pF)
_______________________________________________________________________________________ 7
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