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MAX40079/MAX40087/
MAX40077/MAX40089/
MAX40078
Single/Dual/Quad Ultra-Low
Input Bias Current,
Low-Noise Amplifiers
General Description
Benefits and Features
The
MAX40079/MAX40087/MAX40077/MAX40089/
● Low Input Voltage Noise Density: 4.2nV/√Hz at 30KHz
● Low Input Current Noise Density: 0.5fA/√Hz
● Low Input Bias Current: 0.3pA (typ)
MAX40078 are wide band, low-noise, low-input bias
current operational amplifiers that offer rail-to-rail outputs
and single-supply operation from 2.7V to 5.5V. These low-
noise amps draw 2.2mA of quiescent supply current per
amplifier. This family of amplifiers offers ultra-low distortion
(0.0002% THD+N), as well as low input voltage-noise
density (4.2nV/√Hz) and low input current-noise density
(0.5fA/√Hz). The low input bias current of 0.3pA (typ) and
low noise(4.5nV/√Hz), together with the wide bandwidth,
provides excellent performance for transimpedance (TIA)
and imaging applications.
● Low Distortion: 0.00035% or -109dB THD+N (1kΩ
Load)
● Single-Supply Operation from +2.7V to +5.5V
● Input Common-Mode Voltage Range Includes
Ground
● Rail-to-Rail Output Swings with a 1kΩ Load
● Wide Bandwidth: MAX40079/MAX40077/MAX40078
(10MHz); MAX40087/MAX40089 (42MHz)
● Excellent DC Characteristics: V
● Single-Channel 6-bump WLP in 1.31mm x 0.73mm
with 0.35mm Bump Pitch
● Dual-Channel 8-bump WLP in 0.96mm x 1.66mm
with 0.35mm Bump Pitch
● Available in Space-Saving 6-WLP, 6-SOT, 8-WLP
≤ 30μV
OS
These amplifiers have outputs which swing rail-to-rail and
their input common-mode voltage range includes ground.
The MAX40079/MAX40077/MAX40078 are single/dual/
quad respectively in unity-gain stable with a bandwidth
of 10MHz. The MAX40087/MAX40089 are single/dual
respectively with gain ≥ 5 stable and bandwidth of 42MHz.
They operate over the full -40°C to +125°C temperature
range.
and μMAX Packages
THD+N Performance
Single channel op amps are available in 6-bump wafer-level
package (WLP) and SOT23 6-pin packages. The dual channel
op amps are available in 8-bump WLP and μMAX-8 packages.
The quad channel option is available in 14-TSSOP package.
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
toc20
-80
Applications
VOUT = 4 VP-P
● Transimpedance Amplifiers
● pH Probes and Reference Electrodes
● ADC Buffers
-90
● DAC Output Amplifiers
● Low-Noise Microphone/Preamplifiers
● Digital Scales
-100
RL = 1KΩ
-110
● Strain Gauges/Sensor Amplifiers
● Medical Instrumentation
RL = 10KΩ
-120
20
200
2000
20000
Ordering Information appears at end of data sheet.
FREQUENCY(Hz)
19-100237; Rev 10; 10/21
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