MAX4249 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – SOT23, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps

19-1295; Rev 2; 4/98
SOT23, Single-Supply, Low-Noise,
Low-Distortion, Rail-to-Rail Op Amps
General Description
The MAX4249–MAX4257 low-noise, low-distortion oper-
ational amplifiers offer Rail-to-Rail^® outputs and single-
supply operation down to 2.4V. They draw only 400µA
of quiescent supply current per amplifier while featuring
ultra-low distortion (0.0002% THD), as well as low input
voltage noise density (7.9nV/√Hz) and low input current
noise density (0.5fA/√Hz). 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 0.5µA and
puts the amplifiers’ outputs into a high-impedance state.
The MAX4249–MAX4257’s outputs swing rail-to-rail and
their input common-mode voltage range includes
ground. The MAX4250–MAX4254 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.
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.
____________________________Features
o Low Input Voltage Noise Density: 7.9nV/√Hz
o Low Input Current Noise Density: 0.5fA/√Hz
o Low Distortion: 0.0002% THD (1kΩ load)
o 400µA Quiescent Supply Current per Amplifier
o Single-Supply Operation from +2.4V to +5.5V
o Input Common-Mode Voltage Range Includes
Ground
o Outputs Swing within 8mV of Rails with a 10kΩ Load
o 3MHz GBW Product, Unity-Gain Stable
(MAX4250–MAX4254)
22MHz GBW Product, Stable with A_V ≥ 10V/V
(MAX4249/MAX4255/MAX4256/MAX4257)
o Excellent DC Characteristics:
V_OS = 70µV
I_BIAS = 1pA
Large-Signal Voltage Gain = 116dB
o Low-Power Shutdown Mode:
Reduces Supply Current to 0.5µA
Places Outputs in a High-Impedance State
o 400pF Capacitive-Load Handling Capability
o Available in Space-Saving SOT23 and µMAX
Packages
Ordering Information
PART
TEMP. RANGE
PIN-
PACKAGE
SOT
TOP MARK
MAX4249ESD -40°C to +85°C 14 SO
—
MAX4249EUB -40°C to +85°C 10 µMAX
—
MAX4250EUK-T -40°C to +85°C 5 SOT23-5
ACCI
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
—
Yes
—
Yes
—
—
Yes
—
PACKAGES
10-pin µMAX, 14-pin SO
5-pin SOT23
8-pin µMAX/SO
8-pin µMAX/SO
10-pin µMAX, 14-pin SO
14-pin SO
5-pin SOT23
8-pin µMAX/SO
8-pin µMAX/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 [phone].
For small orders, phone [phone] ext. 3468.