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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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Status
Active: In Production.
Description
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.
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Data Sheet
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Key Features
- 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
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Applications/Uses
- Automotive Sensors
- Base Station/Wireless Infrastructure
- Battery-Powered Applications
- Computers: Desktops, Workstations, and Servers
- Computers: Motherboards
- Computers: Notebook
- Data Acquisition
- General Purpose Low-Voltage Applications
- GPS Solutions
- Low-Power, Low-Voltage Applications
- MP3 Docking Stations: Mid Level
- Portable Equipment
- Programmable Logic Controllers (PLCs)
- Sensor and Signal Conditioning
- Set-Top Boxes
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Key Specifications:
| Operational Amplifiers |
| Part Number |
Amps. |
Rail to Rail |
AVCL |
VSUPPLY (Total)
(V) |
VSUPPLY (Total)
(V) |
ICC per Amp.
(µA) |
ICC per Amp.
(µA) |
VOS
(µV) |
CMRR @DC
(dB) |
PSRR @DC
(dB) |
Input IBIAS
(nA) |
Unity Gain BW
(MHz) |
Slew Rate
(V/µs) |
en
(nV/√Hz) |
in
(pA/√Hz) |
Low Pwr. Shutdn |
Package/Pins |
Budgetary Price |
| min |
min |
max |
typ |
max |
max |
typ |
typ |
max |
typ |
typ |
See Notes |
| MAX4321 |
1 |
Input/Output |
1 |
2.4 |
6.5 |
650 |
725 |
3500 |
91 |
100 |
150 |
5 |
2 |
22 |
0.4 |
No |
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$0.66 @1k |
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See All Operational Amplifiers (160)
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Pricing 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.
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Diagram
 Typical Operating Circuit
More Information
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Information Index
Document Ref.: 19-1649
Rev 0;
2000-04-01
This page last modified: 2009-07-15
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