LMX321, LMX324, LMX358 Single/Dual/Quad, General-Purpose, Low-Voltage, Rail-to-Rail Output Op Amps

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The LMX321/LMX358/LMX324 are single/dual/quad, low-cost, low-voltage, pin-to-pin compatible upgrades to the LMV321/LMV358/LMV324 family of general purpose op amps. These devices offer rail-to-rail outputs and an input common-mode range that extends below ground. These op amps draw only 105µA of quiescent current per amplifier, operate from a single +2.3V to +7V supply, and drive 2kΩ resistive loads to within 40mV of either rail. The LMX321/LMX358/LMX324 are unity-gain stable with a 1.3MHz gain-bandwidth product capable of driving capacitive loads up to 400pF. The combination of low voltage, low cost, and small package size makes these amplifiers ideal for portable/battery-powered equipment.

The LMX321 single op amp is available in ultra-small 5-pin SC70 and space-saving 5-pin SOT23 packages. The LMX358 dual op amp is available in the tiny 8-pin SOT23 or the 8-pin µMAX® package. The LMX324 quad op amp is available in 14-pin TSSOP and SO packages.

Key Features

Applications/Uses

Upgrade to LMV321/LMV358/LMV324 Family
Single +2.3V to +7V Supply Voltage Range
Available in Space-Saving Packages
- 5-Pin SC70 (LMX321)
- 8-Pin SOT23 (LMX358)
- 14-Pin TSSOP (LMX324)
1.3MHz Gain-Bandwidth Product
105µA Quiescent Current per Amplifier (V_CC = +2.7V)
No Phase Reversal for Overdriven Inputs
No Crossover Distortion
Rail-to-Rail Output Swing
Input Common-Mode Voltage Range: V_EE - 0.2V to V_CC - 0.8V
Drives 2kΩ Resistive Loads

	Active Filters
	Cell Phones
	Cordless Phones
	Laptop Computers
	Low-Power, Low-Voltage Applications
	Portable Battery-Powered Equipment

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. V_OS (µV)

Typ. CMRR @ DC (dB)

Typ PSRR @ DC (dB)

Max. Input I_BIAS (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^**

LMX321

Output Only

2.3

105

6,000

1.3

0.13

SC-70/5
SOT-23/5

-40 to +125

$0.26 @ 1k

LMX324

SOIC/14
TSSOP/14

$0.49 @ 1k

LMX358

SOIC/8
SOT-23/8
uMAX/8

$0.36 @ 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.