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MD3872 Datasheet(PDF) 3 Page - Supertex, Inc

Part # MD3872
Description  Low Power, Low Noise Ultrasound Receive Front-End Eight-Channels of LNA, VGA, AAF, CPS & 12-Bit, 50MHz ADCs
PDF  24 Pages
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Manufacturer  SUTEX [Supertex, Inc]
Direct Link  http://www.supertex.com
Logo SUTEX - Supertex, Inc

MD3872 Datasheet(HTML) 3 Page - Supertex, Inc

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Supertex inc.
www.supertex.com
MD3872
Doc.# DSFP-MD3872
B060413
Low Noise Preamplifier
(Over operating conditions unless otherwise specified, AV
DD = DVDD = 1.8V, CWVDD =+3.3V, GLNA = 18dB, TA = 25°C)
Sym
Parameter
Min
Typ
Max
Units
Conditions
G
LNA
Pre-amplifier gain
-
14/18
-
dB
Selectable
R
IN
Input resistance
-
15
-
kΩ
Without active termination
C
IN
Input capacitance
-
10
-
pF
Without active termination
I
BIAS
Input bias current
-
1.0
-
nA
From ESD leakage
V
IN
Input voltage range
-
±240
-
mV
GAIN
LNA = 1
-
±150
-
GAIN
LNA = 0
V
LNA-
NOISE
Input voltage noise, 5MHz
-
1.3
-
nV/√Hz
LNA Gain of 14dB
-
1.1
-
LNA Gain of 18dB
I
IN-NOISE
Input current noise
-
1.05
-
pA/√Hz Without active termination
NF
Noise figure
-
4.4
-
dB
f = 5.0MHz,
without active termination
-
6.0
-
R
S = RIN = 50Ω,
f = 5.0MHz with active termination
BW
LNA -3dB bandwidth
-
65
-
MHz
Small signal bandwidth
Overall Channel Characteristics
((Over operating conditions unless otherwise specified, AV
DD = DVDD = 1.8V, CWVDD =+3.3V, RSEL = Hi, RS = 50Ω, TA = 25°C)
Gain
Whole channel gain
-
58
-
dB
Without active termination, max. gain
V
CH-NOISE
Input voltage noise, 5.0MHz
-
2.0/1.5
-
nV/√Hz LNA gain of 14 or 18dB
SFDR
Spurious-free dynamic
range, -1dBFS, 5MHz
-
63.2
-
dBc
40Msps
-
62.1
-
50Msps
SNRFS Signal to noise ratio at full
scale, -1dBFS, 5MHz
-
56.3
-
dBc
40Msps
-
56.2
-
50Msps
HD2
Second harmonic distortion,
-1dBFS, 5MHz, 40dB gain
-
-72
-
dBc
40Msps
-
-68
-
50Msps
HD3
Third harmonic distortion,
-1dBFS, 5MHz, 40dB gain
-
-63
-
dBc
40Msps
-
-62
-
50Msps
IMD
IMD, two-tone
-
-63
-
dBc
f1 = 5.0MHz , f2 = 6.0MHz,
at -7.0dBFS, 40dB gain
CSTK
Crosstalk
-
-70
-
dB
1.0MHz, 1V
PP at adjacent channel
Δt
gd
Group delay variation
-
±2.0
-
ns
2.0 to 10MHz, max gain range
t
OLR
Overload recovery time
-
5.0
-
ns
8dB gain, V
IN 10MHz 10mVPP to 0.5VPP step
f
CHP
High-pass cutoff frequency
-
50
-
kHz
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