max2034ctmt Maxim Integrated Products, Inc., max2034ctmt Datasheet

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max2034ctmt

Manufacturer Part Number
max2034ctmt
Description
Quad-channel, Ultra-low-noise Amplifier With Digitally Programmable Input Impedance
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.MAX2034CTMT.pdf (13 pages)
19-3969; Rev 1; 3/07
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
cific* two-tone third-order intermodulation distortion per-
formance of -55dBc at V
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.
**EP = Exposed paddle.
+Denotes lead-free package.
T = Tape-and-reel package.
*See the Ultrasound-Specific IMD3 Specification in the
Applications Information section.
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.
MAX2034CTM+
MAX2034CTM
MAX2034CTM+T 0°C to +70°C
MAX2034CTM-T 0°C to +70°C
OUT
Quad-Channel, Ultra-Low-Noise Amplifier with
PART
= 1V
P-P
and f
Digitally Programmable Input Impedance
0°C to +70°C
0°C to +70°C
________________________________________________________________ Maxim Integrated Products
RANGE
IN
TEMP
Ordering Information
= 5MHz, and an ultrasound-spe-
General Description
OUT
= 1V
PIN-
PACKAGE
48 Thin QFN-EP**
(7mm x 7mm)
48 Thin QFN-EP**
(7mm x 7mm)
48 Thin QFN-EP**
(7mm x 7mm)
48 Thin QFN-EP**
(7mm x 7mm)
P-P
and f
IN
= 5MHz.
T4877-4
T4877-4
T4877-4
T4877-4
CODE
PKG
♦ High-Level Integration of 4 Channels
♦ Digitally Programmable Input Impedance (R
♦ Integrated Input Clamp
♦ Integrated Input-Damping Capacitor
♦ Ultra-Low 2.2dB Noise Figure at R
♦ 70MHz, -3dB Bandwidth
♦ Low 58mW/Channel Power Dissipation
♦ HD2 of -68dBc at V
♦ Two-Tone Ultrasound-Specific* IMD3 of -55dBc at
♦ Quick Large-Signal Overload Recovery
♦ Single +5V Supply Operation
♦ Sleep Mode
Typical Application Circuit appears at end of data sheet.
TOP VIEW
50Ω, 100Ω, 200Ω, and 1kΩ
Exceptional Second Harmonic Imaging
Performance
V
PW/CW Doppler Performance
OUT
GND
GND
GND
GND
V
V
V
V
ZF1
IN1
PD
Ultrasound Imaging
Sonar Signal Amplification
D2
CC
CC
CC
CC
= 1V
48
37
38
39
40
41
42
43
44
45
46
47
36 35 34 33 32 31 30 29 28 27 26 25
1
P-P
2
and f
3
4
OUT
IN
5
THIN QFN
= 5MHz for Exceptional
MAX2034
6
= 1V
Pin Configuration
7
8
P-P
Applications
9
and f
10 11 12
S
= R
IN
Features
= 5MHz for
IN
24
23
22
21
20
19
18
17
16
15
14
13
= 200Ω
OUT4+
OUT4-
GND
GND
V
D0
D1
V
V
GND
INB4
INC4
IN
CC
CC
CC
) of
1

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max2034ctmt Summary of contents

Page 1

Rev 1; 3/07 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 ...

Page 2

Quad-Channel, Ultra-Low-Noise Amplifier with Digitally Programmable Input Impedance ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +5.5V CC Any Other Pins to GND...............................-0. IN_ to INB_ ..................................................................-2V to +2V INC_ to GND .....................................................-24mA to +24mA Continuous Power Dissipation ...

Page 3

Quad-Channel, Ultra-Low-Noise Amplifier with Digitally Programmable Input Impedance AC ELECTRICAL CHARACTERISTICS (continued) (MAX2034 Typical Application Circuit, V signal AC-coupled to IN_, INB_ is AC grounded, V between the differential outputs 20pF from each output to ground ...

Page 4

Quad-Channel, Ultra-Low-Noise Amplifier with Digitally Programmable Input Impedance (MAX2034 Typical Application Circuit signal AC-coupled to IN_, INB_ is AC grounded, V between the differential outputs 20pF from each output to ground SMALL-SIGNAL BANDWIDTH vs. ...

Page 5

Quad-Channel, Ultra-Low-Noise Amplifier with Digitally Programmable Input Impedance (MAX2034 Typical Application Circuit, V signal AC-coupled to IN_, INB_ is AC grounded, V between the differential outputs 20pF from each output to ground TWO-TONE ULTRASOUND-SPECIFIC IMD3 vs. ...

Page 6

Quad-Channel, Ultra-Low-Noise Amplifier with Digitally Programmable Input Impedance (MAX2034 Typical Application Circuit signal AC-coupled to IN_, INB_ is AC grounded, V between the differential outputs 20pF from each output to ground LARGE-SIGNAL RECOVERY 400ns/div ...

Page 7

Quad-Channel, Ultra-Low-Noise Amplifier with Digitally Programmable Input Impedance PIN NAME Digitally Programmable Inputs. Programs the input impedance of each amplifier. See Table 1 on 18, 19, 42 D1, D0, D2 input impedance programming information. 23 OUT4- Channel 4 LNA Analog ...

Page 8

Quad-Channel, Ultra-Low-Noise Amplifier with Digitally Programmable Input Impedance Functional Diagram PD ZF1 IN1 INC1 MAX2034 INB1 ZF2 IN2 INC2 INB2 ZF3 IN3 INC3 INB3 ZF4 IN4 INC4 INB4 8 _______________________________________________________________________________________ Digitally Programmable Input Impedance The MAX2034 features an on-chip digitally ...

Page 9

Quad-Channel, Ultra-Low-Noise Amplifier with Digitally Programmable Input Impedance Integrated Input Damping Capacitor At high frequencies, gain peaking can occur due to an active input termination becoming less effective when the gain rolls off. Although an external shunting capaci- tor can ...

Page 10

Quad-Channel, Ultra-Low-Noise Amplifier with Digitally Programmable Input Impedance 100nF Figure 2. Typical Single-Channel Ultrasound Application Circuit Ultrasound-Specific IMD3 Specification Unlike typical communications specs, the two input tones are not equal in magnitude for the ultrasound- specific IMD3 ...

Page 11

Quad-Channel, Ultra-Low-Noise Amplifier with Digitally Programmable Input Impedance 100nF R = 200Ω S 100nF 18nF 100nF R = 200Ω S 100nF 18nF 100nF R = 200Ω S 100nF 18nF 100nF R = 200Ω S ______________________________________________________________________________________ Typical 200Ω Application Circuit 100nF ...

Page 12

Quad-Channel, Ultra-Low-Noise Amplifier with Digitally Programmable Input Impedance (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) E/2 D ______________________________________________________________________________________ E DETAIL A ...

Page 13

... Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2007 Maxim Integrated Products Springer Package Information PACKAGE OUTLINE 32, 44, 48, 56L THIN QFN, 7x7x0.8mm 21-0144 is a registered trademark of Maxim Integrated Products, Inc ...

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