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Single/Dual/Quad Ultra-Low Input Bias Current, Low-Noise Amplifiers

Combination of Low Input Bias Current, Very Low Noise and Tiny Size Makes These Amps Great for Precision Applications

Product Details

Key Features

Parametric specs for Operational Amplifiers
Unity Gain BW (MHz) (typ) 42
Input IBIAS (nA) (max) 0.16
VOS (µV) (max) 150
VSUPPLY (Total) (V) (min) 2.7
VSUPPLY (Total) (V) (max) 5.5
# Amplifiers 1
Rail to Rail Output Only
Package/Pins SOT23/6
THIN WLP/6
Budgetary
Price (See Notes)
1.05
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Simplified Block Diagram

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Parameters

Parametric specs for Operational Amplifiers
Unity Gain BW (MHz) (typ) 42
Input IBIAS (nA) (max) 0.16
VOS (µV) (max) 150
VSUPPLY (Total) (V) (min) 2.7
VSUPPLY (Total) (V) (max) 5.5
# Amplifiers 1
Rail to Rail Output Only
Package/Pins SOT23/6
THIN WLP/6
Budgetary
Price (See Notes)
1.05

Key Features

  • Low Input Voltage Noise Density: 4.2nV/ at 30KHz
  • Low Input Current Noise Density: 0.5fA/
  • Low Input Bias Current: 0.3pA (typ)
  • 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 1kΩLoad
  • Wide Bandwidth: MAX 40079/MAX40077/MAX40078 (10MHz); MAX40087/MAX40089 (42MHz)
  • Excellent DC Characteristics: VOS ≤ 30µV
  • 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, and µMAX Packages

Applications/Uses

  • ADC Buffers
  • DAC Output Amplifiers
  • Digital Scales
  • Low-Noise Microphone/Preamplifiers
  • Medical Instrumentation
  • pH Probes and Reference Electrodes
  • Strain Gauges/Sensor Amplifiers
  • Transimpedance Amplifiers

Description

The MAX40079/MAX40087/MAX40077/MAX40089/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 trans-impedance (TIA) and imaging applications.

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.

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.

Simplified Block Diagram

MAX40077, MAX40078, MAX40079, MAX40087, MAX40089: Functional Diagram MAX40077, MAX40078, MAX40079, MAX40087, MAX40089: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .