MAX4475 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – SOT23, Low-Noise, Low-Distortion, Wide-Band, Rail-to-Rail Op Amps

19-2137; Rev 1; 10/02
SOT23, Low-Noise, Low-Distortion, Wide-Band,
Rail-to-Rail Op Amps
General Description
The MAX4475–MAX4478/MAX4488/MAX4489 wide-
band, low-noise, low-distortion operational amplifiers
offer Rail-to-Rail^® outputs and single-supply operation
down to 2.7V. They draw 2.2mA of quiescent supply
current per amplifier while featuring ultra-low distortion
(0.0002% THD + N), as well as low input voltage-noise
density (4.5nV/√Hz) and low input current-noise density
(0.5fA/√Hz). These features make the devices an ideal
choice for applications that require low distortion and/or
low noise.
For power conservation, the MAX4475/MAX4488 offer a
low-power shutdown mode that reduces supply current
to 0.01µA and places the amplifiers’ outputs into a high-
impedance state. These amplifiers have outputs which
swing rail-to-rail and their input common-mode voltage
range includes ground. The MAX4475–MAX4478 are
unity-gain stable with a gain-bandwidth product of
10MHz. The MAX4488/MAX4489 are internally compen-
sated for gains of +5V/V or greater with a gain-band-
width product of 42MHz. The single MAX4475/
MAX4476/MAX4488 are available in space-saving,
6-pin SOT23 packages.
Applications
ADC Buffers
DAC Output Amplifiers
Low-Noise Microphone/Preamplifiers
Digital Scales
Strain Gauges/Sensor Amplifiers
Medical Instrumentation
Typical Operating Characteristic
INPUT VOLTAGE-NOISE DENSITY
vs. FREQUENCY
25
20
15
10
5
0
10
100
1k
10k
100k
FREQUENCY (Hz)
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Features
o Low Input Voltage-Noise Density: 4.5nV/√Hz
o Low Input Current-Noise Density: 0.5fA/√Hz
o Low Distortion: 0.0002% THD + N (1kΩ load)
o Single-Supply Operation from +2.7V to +5.5V
o Input Common-Mode Voltage Range Includes
Ground
o Rail-to-Rail Output Swings with a 1kΩ Load
o 10MHz GBW Product, Unity-Gain Stable
(MAX4475–MAX4478)
o 42MHz GBW Product, Stable with A_V ≥ +5V/V
(MAX4488/MAX4489)
o Excellent DC Characteristics
V_OS = 70µV
I_BIAS = 1pA
Large-Signal Voltage Gain = 120dB
o Low-Power Shutdown Mode:
Reduces Supply Current to 0.01µA
Places Output in High-Impedance State
o Available in Space-Saving SOT23, µMAX, and
TSSOP Packages
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX4475AUT-T -40°C to +125°C 6 SOT23-6 AAZV
MAX4475AUA -40°C to +125°C 8 µMAX
—
MAX4475ASA
-40°C to +125°C 8 SO
—
MAX4476AUT-T -40°C to +125°C 6 SOT23-6 AAZX
MAX4477AUA -40°C to +125°C 8 µMAX
—
Ordering Information continued at end of data sheet.
Pin Configurations and Typical Operating Circuit appear at
end of data sheet.
Selector Guide
PART
MAX4475
MAX4476
MAX4477
MAX4478
MAX4488
MAX4489
GAIN BW
(MHz)
10
10
10
10
42
42
STABLE
GAIN
(V/V)
1
1
1
1
5
5
NO. OF
AMPS
1
1
2
4
1
2
SHDN
Yes
—
—
—
Yes
—
________________________________________________________________ Maxim Integrated Products 1
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