19-1295; Rev 2; 4/98
SOT23, Single-Supply, Low-Noise,
Low-Distortion, Rail-to-Rail Op Amps
General Description
The MAX4249鈥揗AX4257 low-noise, low-distortion oper-
ational amplifiers offer Rail-to-Rail
庐
outputs and single-
supply operation down to 2.4V. They draw only 400碌A
of quiescent supply current per amplifier while featuring
ultra-low distortion (0.0002% THD), as well as low input
voltage noise density (7.9nV/鈭欻z) and low input current
noise density (0.5fA/鈭欻z). These features make the
devices an ideal choice for portable/battery-powered
applications that require low distortion and/or low noise.
For additional power conservation, the MAX4249/
MAX4251/MAX4253/MAX4256 offer a low-power shut-
down mode that reduces supply current to 0.5碌A and
puts the amplifiers鈥?outputs into a high-impedance state.
The MAX4249鈥揗AX4257鈥檚 outputs swing rail-to-rail and
their input common-mode voltage range includes
ground. The MAX4250鈥揗AX4254 are unity-gain stable;
the MAX4249/MAX4255/MAX4256/MAX4257 are internal-
ly compensated for gains of 10V/V or greater. The single
MAX4250/MAX4255 are available in a space-saving,
5-pin SOT23 package.
____________________________Features
o
o
o
o
o
o
o
o
Low Input Voltage Noise Density: 7.9nV/鈭欻z
Low Input Current Noise Density: 0.5fA/鈭欻z
Low Distortion: 0.0002% THD (1k鈩?load)
400碌A Quiescent Supply Current per Amplifier
Single-Supply Operation from +2.4V to +5.5V
Input Common-Mode Voltage Range Includes
Ground
Outputs Swing within 8mV of Rails with a 10k鈩?Load
3MHz GBW Product, Unity-Gain Stable
(MAX4250鈥揗AX4254)
22MHz GBW Product, Stable with A
V
鈮?/div>
10V/V
(MAX4249/MAX4255/MAX4256/MAX4257)
Excellent DC Characteristics:
V
OS
= 70碌V
I
BIAS
= 1pA
Large-Signal Voltage Gain = 116dB
Low-Power Shutdown Mode:
Reduces Supply Current to 0.5碌A
Places Outputs in a High-Impedance State
400pF Capacitive-Load Handling Capability
Available in Space-Saving SOT23 and 碌MAX
Packages
MAX4249鈥揗AX4257
o
o
Applications
Portable/Battery-Powered Equipment
Medical Instrumentation
ADC Buffers
Digital Scales
Strain Gauges
Sensor Amplifiers
Portable Communications Devices
Pin Configurations and Typical Operating Circuit appear at
end of data sheet.
o
o
Ordering Information
PART
MAX4249ESD
MAX4249EUB
TEMP. RANGE
-40掳C to +85掳C
-40掳C to +85掳C
PIN-
PACKAGE
14 SO
10 碌MAX
5 SOT23-5
SOT
TOP MARK
鈥?/div>
鈥?/div>
ACCI
MAX4250EUK-T
-40掳C to +85掳C
Ordering Information continued at end of data sheet.
Selector Guide
PART
MAX4249
MAX4250
MAX4251
MAX4252
MAX4253
MAX4254
MAX4255
MAX4256
MAX4257
GAIN
BANDWIDTH
(MHz)
22
3
3
3
3
3
22
22
22
MINIMUM
STABLE
GAIN (V/V)
10
1
1
1
1
1
10
10
10
NO. OF AMPLIFIERS
PER PACKAGE
2
1
1
2
2
4
1
1
2
SHUTDOWN
MODE
Yes
鈥?/div>
Yes
鈥?/div>
Yes
鈥?/div>
鈥?/div>
Yes
鈥?/div>
PACKAGES
10-pin 碌MAX, 14-pin SO
5-pin SOT23
8-pin 碌MAX/SO
8-pin 碌MAX/SO
10-pin 碌MAX, 14-pin SO
14-pin SO
5-pin SOT23
8-pin 碌MAX/SO
8-pin 碌MAX/SO
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
MAX4250 PDF文件相关型号
MAX4251,MAX4252,MAX4253,MAX4254,MAX4255,MAX4256
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