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MAX2034CTM+

P1-P3P4-P6P7-P9P10-P12P13-P13
General Description
The MAX2034 four-channel, low-power, ultra-low-noise
preamplifier is designed for ultrasound and medical
instrumentation applications. Each low-noise amplifier
has a single-ended input, differential output, a highly
accurate 19dB fixed gain, and a wide -3dB bandwidth
of 70MHz. The high-gain accuracy of the amplifier
allows for exceptional channel-to-channel gain match-
ing, which is necessary for high-performance ultra-
sound-imaging applications. The MAX2034 also
includes an on-chip programmable input impedance
feature that allows the device to be compatible with a
variety of common source impedances ranging from
50Ω to 1kΩ. The input impedance of each amplifier
uses a feedback topology for active impedance match-
ing. The active input impedance matching feature
achieves an exceptionally low 2.2dB noise figure with a
source and input impedance of 200Ω.
The MAX2034 has excellent dynamic and linearity per-
formance characteristics optimized for all ultrasound-
imaging modalities including second harmonic 2D
imaging and continuous wave Doppler. The device
achieves a second harmonic distortion of -68dBc at
V
OUT
= 1V
P-P
and f
IN
= 5MHz, and an ultrasound-spe-
cific* two-tone third-order intermodulation distortion per-
formance of -55dBc at V
OUT
= 1V
P-P
and f
IN
= 5MHz.
The MAX2034 is also optimized for quick overload
recovery for operation under the large input signal con-
ditions typically found in ultrasound input-buffer imag-
ing applications.
The MAX2034 is available in a 48-pin thin QFN pack-
age with an exposed paddle. Electrical performance is
guaranteed over a 0°C to +70°C temperature range.
Features
♦ High-Level Integration of 4 Channels
♦ Digitally Programmable Input Impedance (R
IN
) of
50Ω, 100Ω, 200Ω, and 1kΩ
♦ Integrated Input Clamp
♦ Integrated Input-Damping Capacitor
♦ Ultra-Low 2.2dB Noise Figure at R
S
= R
IN
= 200Ω
♦ 70MHz, -3dB Bandwidth
♦ Low 58mW/Channel Power Dissipation
♦ HD2 of -68dBc at V
OUT
= 1V
P-P
and f
IN
= 5MHz for
Exceptional Second Harmonic Imaging
Performance
♦ Two-Tone Ultrasound-Specific* IMD3 of -55dBc at
V
OUT
= 1V
P-P
and f
IN
= 5MHz for Exceptional
PW/CW Doppler Performance
♦ Quick Large-Signal Overload Recovery
♦ Single +5V Supply Operation
♦ Sleep Mode
MAX2034
Quad-Channel, Ultra-Low-Noise Amplifier with
Digitally Programmable Input Impedance
________________________________________________________________ Maxim Integrated Products 1
TOP VIEW
MAX2034
THIN QFN
13
14
15
16
17
18
19
20
21
22
23
24
INC4
INB4
GND
V
CC
V
CC
D1
D0
V
CC
GND
GND
OUT4-
OUT4+
48
47
46
45
44
43
42
41
40
39
38
37
1
2
345678910
11
12
IN1
ZF1
GND
V
CC
V
CC
PD
D2
V
CC
GND
GND
V
CC
GND
IN4
ZF4
INB3
INC3
IN3
ZF3
INB2
INC2
IN2
ZF2
INB1
INC1
36
35
34 33 32 31 30 29 28 27
26
25
GND
GND
V
CC
OUT3-
OUT3+
V
CC
OUT2-
OUT2+
GND
V
CC
OUT1-
OUT1+
Pin Configuration
19-3969; Rev 1; 3/07
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART
TEMP
RANGE
PIN-
PACKAGE
PKG
CODE
MAX2034CTM+
0°C to +70°C
48 Thin QFN-EP**
(7mm x 7mm)
T4877-4
MAX2034CTM
0°C to +70°C
48 Thin QFN-EP**
(7mm x 7mm)
T4877-4
MAX2034CTM+T
0°C to +70°C
48 Thin QFN-EP**
(7mm x 7mm)
T4877-4
MAX2034CTM-T
0°C to +70°C
48 Thin QFN-EP**
(7mm x 7mm)
T4877-4
Ordering Information
**EP = Exposed paddle.
+Denotes lead-free package.
T = Tape-and-reel package.
*See the Ultrasound-Specific IMD3 Specification in the
Applications Information section.
Typical Application Circuit appears at end of data sheet.
Applications
Ultrasound Imaging
Sonar Signal Amplification
MAX2034
Quad-Channel, Ultra-Low-Noise Amplifier with
Digitally Programmable Input Impedance
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(MAX2034 Typical Application Circuit, V
CC
= +4.75V to +5.25V, no input signal applied between IN1–IN4 and GND, T
A
= 0°C to +70°C.
Typical values are at V
CC
= +5.0V and T
A
= +25°C, unless otherwise noted.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
CC
to GND ...........................................................-0.3V to +5.5V
Any Other Pins to GND...............................-0.3V to (V
CC
+ 0.3V)
IN_ to INB_ ..................................................................-2V to +2V
INC_ to GND .....................................................-24mA to +24mA
Continuous Power Dissipation (T
A
= +70°C)
48-Pin TQFN (derated 40mW/°C above +70°C) ........3200mW
Operating Temperature Range...............................0°C to +70°C
Junction Temperature......................................................+150°C
θ
JC
...................................................................................0.8°C/W
θ
JA
....................................................................................25°C/W
Storage Temperature Range .............................-40°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Supply Voltage V
CC
4.75 5.0 5.25
V
I
CC
Normal mode (PD = 0), no signals applied, see
the Typical Operating Characteristics for I
CC
as
a function of input signal
46.5 54.5
Total Supply Current
I
CC
,
PD
Sleep mode (PD = 1), V
IN_
= 112mV
P-P
at 5MHz 0.8
4
mA
LOGIC INPUTS (PD, D2, D1, D0)
Input High Voltage V
IH
4.0
V
Input Low Voltage V
IL
1.0
V
Input Current with Logic-High I
IH
1µA
Input Current with Logic-Low I
IL
1µA
AC ELECTRICAL CHARACTERISTICS
(MAX2034 Typical Application Circuit, V
CC
= +4.75V to +5.25V, source impedance R
S
= 200Ω, PD = 0, D2/D1/D0 = 0/1/0 (R
IN
= 200Ω),
signal AC-coupled to IN_, INB_ is AC grounded, V
OUT
is the differential output between OUT_+ and OUT_-, f
IN_
= 5MHz, R
L
= 200Ω
between the differential outputs, C
L
= 20pF from each output to ground, T
A
= 0°C to +70°C. Typical values are at V
CC
= 5.0V and T
A
=
+25°C, unless otherwise noted.) (Note 1)
SYMBOL
MIN TYP MAX
UNITS
105
206
870
±1
±0.1 ±0.5
MHz
280
V/µs
MAX2034
Quad-Channel, Ultra-Low-Noise Amplifier with
Digitally Programmable Input Impedance
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2034 Typical Application Circuit, V
CC
= +4.75V to +5.25V, source impedance R
S
= 200Ω, PD = 0, D2/D1/D0 = 0/1/0 (R
IN
= 200Ω),
signal AC-coupled to IN_, INB_ is AC grounded, V
OUT
is the differential output between OUT_+ and OUT_-, f
IN_
= 5MHz, R
L
= 200Ω
between the differential outputs, C
L
= 20pF from each output to ground, T
A
= 0°C to +70°C. Typical values are at V
CC
= 5.0V and T
A
=
+25°C, unless otherwise noted.) (Note 1)
SYMBOL
MIN
TYP
MAX
UNITS
4.1
2.9
2.2
1.4
0.87
nV/√Hz
2.1
pA/√Hz
-50 -68
-66
dBc
-50
-44
dBc
-45 -55
-52
dBc
4.4
V
P-P
0.5
2.45
5.3
±1.5
deg
f
IN_
= 10MHz, V
OUT
= 1V
P-P
,
adjacent channels
0.3
0.3
Note 1: Min and max limits at T
A
= +25°C and +70°C are guaranteed by design, characterization, and/or production test.
Note 2: See the Ultrasound-Specific IMD3 Specification in the Applications Information section.
P1-P3P4-P6P7-P9P10-P12P13-P13

MAX2034CTM+

Mfr. #:
Buy MAX2034CTM+
Manufacturer:
Maxim Integrated
Description:
RF Amplifier 4Ch Amp w/Digital Prog Input Imp
Lifecycle:
New from this manufacturer.
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