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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX2034 Datasheet

Ultra-Low-Noise Amplifier

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19-3969; Rev 1; 3/07
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Quad-Channel, Ultra-Low-Noise Amplifier with
Digitally Programmable Input Impedance
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
50to 1k. 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 200.
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
VOUT = 1VP-P and fIN = 5MHz, and an ultrasound-spe-
cific* two-tone third-order intermodulation distortion per-
formance of -55dBc at VOUT = 1VP-P and fIN = 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.
Ordering Information
PART
TEMP
RANGE
PIN-
PACKAGE
PKG
CODE
MAX2034CTM+ 0°C to +70°C 48 Thin QFN-EP** T4877-4
(7mm x 7mm)
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** T4877-4
(7mm x 7mm)
MAX2034CTM-T 0°C to +70°C 48 Thin QFN-EP** T4877-4
(7mm x 7mm)
**EP = Exposed paddle.
+Denotes lead-free package.
T = Tape-and-reel package.
*See the Ultrasound-Specific IMD3 Specification in the
Applications Information section.
Features
High-Level Integration of 4 Channels
Digitally Programmable Input Impedance (RIN) of
50, 100, 200, and 1k
Integrated Input Clamp
Integrated Input-Damping Capacitor
Ultra-Low 2.2dB Noise Figure at RS = RIN = 200
70MHz, -3dB Bandwidth
Low 58mW/Channel Power Dissipation
HD2 of -68dBc at VOUT = 1VP-P and fIN = 5MHz for
Exceptional Second Harmonic Imaging
Performance
Two-Tone Ultrasound-Specific* IMD3 of -55dBc at
VOUT = 1VP-P and fIN = 5MHz for Exceptional
PW/CW Doppler Performance
Quick Large-Signal Overload Recovery
Single +5V Supply Operation
Sleep Mode
Applications
Ultrasound Imaging
Sonar Signal Amplification
Pin Configuration
TOP VIEW
36 35 34 33 32 31 30 29 28 27 26 25
GND 37
VCC 38
GND 39
GND 40
24 OUT4+
23 OUT4-
22 GND
21 GND
VCC 41
D2 42
PD 43
VCC 44
VCC 45
GND 46
ZF1 47
IN1 48
MAX2034
20 VCC
19 D0
18 D1
17 VCC
16 VCC
15 GND
14 INB4
13 INC4
1 2 3 4 5 6 7 8 9 10 11 12
THIN QFN
Typical Application Circuit appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX2034 Datasheet

Ultra-Low-Noise Amplifier

No Preview Available !

www.DataSheet4U.com
Quad-Channel, Ultra-Low-Noise Amplifier with
Digitally Programmable Input Impedance
ABSOLUTE MAXIMUM RATINGS
VCC to GND ...........................................................-0.3V to +5.5V
Any Other Pins to GND...............................-0.3V to (VCC + 0.3V)
IN_ to INB_ ..................................................................-2V to +2V
INC_ to GND .....................................................-24mA to +24mA
Continuous Power Dissipation (TA = +70°C)
48-Pin TQFN (derated 40mW/°C above +70°C) ........3200mW
Operating Temperature Range...............................0°C to +70°C
Junction Temperature ......................................................+150°C
θJC...................................................................................0.8°C/W
θJA ....................................................................................25°C/W
Storage Temperature Range .............................-40°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
DC ELECTRICAL CHARACTERISTICS
(MAX2034 Typical Application Circuit, VCC = +4.75V to +5.25V, no input signal applied between IN1–IN4 and GND, TA = 0°C to +70°C.
Typical values are at VCC = +5.0V and TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Supply Voltage
Total Supply Current
VCC
4.75 5.0 5.25
V
Normal mode (PD = 0), no signals applied, see
ICC the Typical Operating Characteristics for ICC as
a function of input signal
46.5 54.5
mA
LOGIC INPUTS (PD, D2, D1, D0)
ICC,PD Sleep mode (PD = 1), VIN_ = 112mVP-P at 5MHz
0.8 4
Input High Voltage
Input Low Voltage
Input Current with Logic-High
Input Current with Logic-Low
VIH
VIL
IIH
IIL
4.0 V
1.0 V
1 µA
1 µA
AC ELECTRICAL CHARACTERISTICS
(MAX2034 Typical Application Circuit, VCC = +4.75V to +5.25V, source impedance RS = 200, PD = 0, D2/D1/D0 = 0/1/0 (RIN = 200),
signal AC-coupled to IN_, INB_ is AC grounded, VOUT is the differential output between OUT_+ and OUT_-, fIN_ = 5MHz, RL = 200
between the differential outputs, CL = 20pF from each output to ground, TA = 0°C to +70°C. Typical values are at VCC = 5.0V and TA =
+25°C, unless otherwise noted.) (Note 1)
PARAMETER
Input Resistance
Typical Input Resistance Variation
from Nominal Programmed
Input Capacitance
Gain
Part-to-Part Gain Variation from
Nominal
-3dB Small-Signal Gain
Bandwidth
Slew Rate
SYMBOL
CONDITIONS
D2/D1/D0 = 0/0/0
D2/D1/D0 = 0/0/1
RIN D2/D1/D0 = 0/1/0
D2/D1/D0 = 0/1/1
CIN
AV (OUT_+ - OUT_-) / IN_
TA = +25oC, RL = 200±10%
f-3dB
D2/D1/D0 = 0/0/0, (50input impedance),
VOUT = 0.2VP-P
MIN TYP MAX UNITS
53
105
206
870
±1 %
40 pF
19 dB
0 ±0.1 ±0.5 dB
70 MHz
280 V/µs
2 _______________________________________________________________________________________


Part Number MAX2034
Description Ultra-Low-Noise Amplifier
Maker Maxim Integrated Products
Total Page 13 Pages
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