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MAX4321
Low-Cost, Low-Voltage, Rail-to-Rail, Input/Output, SOT23 5MHz Op Amp

Low-Voltage, Pin-for-Pin Upgrade for LMC7101


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Description
FULL DATA SHEET (PDF, 224kB)
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The MAX4321 operational amplifier (op amp) combines a 5MHz gain-bandwidth product and excellent DC accuracy with rail-to-rail operation at both the inputs and the output. This device requires only 650µA and operates from either a single +2.4V to +6.5V supply or dual ±1.2V to ±3.25V supplies, although the MAX4321 typically operates down to +1.8V (±0.9V). The MAX4321 remains unity-gain stable with capacitive loads up to 500pF and is capable of driving 250Ω loads to within 200mV of either rail.

With rail-to-rail input common-mode range and output swing, the MAX4321 is ideal for low-voltage, single-supply applications. In addition, low ±1.2mV input offset voltage and high 2V/µs slew rate make this device ideal for signal-conditioning stages for precision, low-voltage data-acquisition systems. The MAX4321 comes in a space-saving 5-pin SOT23 package and is guaranteed over the extended (-40°C to +85°C) temperature range.

The MAX4321 is a low-voltage, pin-for-pin compatible upgrade for the LMC7101 that offers five-times higher bandwidth, two-times faster slew rate, and about half the input voltage noise density.

Key Features   Applications/Uses
  • Low-Voltage, Pin-for-Pin Upgrade for LMC7101
  • Guaranteed +2.4V to +6.5V Single-Supply Operation
  • Typically Operates Down to +1.8V
  • 5MHz Gain-Bandwidth Product
  • 650µA Quiescent Current
  • Rail-to-Rail Common-Mode Input Voltage Range
  • Rail-to-Rail Output Voltage Range
  • Drives 250Ω Loads
  • Unity-Gain Stable for Capacitive Loads up to 500pF
  • No Phase Reversal for Overdriven Inputs
  • Low-Cost Solution in SOT23-5 Package

 
  • Battery-Powered Applications
  • Data Acquisition
  • General Purpose Low-Voltage Applications
  • Low-Power, Low-Voltage Applications
  • Portable Equipment
  • Sensor and Signal Conditioning

    Key Specifications:   Operational Amplifiers
    Part Number Amps Per Pkg. Rail to Rail Min. Stable Closed Loop Gain (V/V) Min. Total Supply (V) Max. Total Supply (V) Typ. Supply Current per Amp. (µA) Max. VOS (µV) Typ. CMRR @ DC (dB) Typ PSRR @ DC (dB) Max. Input IBIAS (nA) Typ. Unity Gain BW (MHz) Typ. Slew Rate (V/µs) Input Voltage Noise Density (nV/√Hz) Input Current Noise Density (pA/√Hz) Low Power Shutdown Package Operating Temp. Range (°C) Price**
    MAX4321  1 Input and Output 1 2.4 6.5 650 3,500 91 100 150 5 2 22 0.4 No SOT-23/5 -40 to +85 $0.48 @ 1k
    See All Operational Amplifiers (141)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX4321: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-1649; Rev 0; 2000-04-01
    This page last modified: 2007-10-24



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