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Analog Devices Inc./Maxim Integrated MAX4323ESA
- Part No.:
- MAX4323ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4323ESA.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,096
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Product details
Overview
MAX4323ESA from Maxim Integrated is a single, rail-to-rail input/output operational amplifier optimized for low-voltage, low-power signal conditioning in precision data-acquisition systems. It delivers 5MHz gain-bandwidth, 650µA quiescent current per amplifier, ±700µV offset voltage (typ), and drives 250Ω loads - enabling high-fidelity analog front-ends in battery-powered instrumentation.
For engineers reviewing the MAX4323ESA datasheet, MAX4323ESA pinout, MAX4323ESA application, or MAX4323ESA equivalent, key selection criteria include shutdown functionality (25µA mode), rail-to-rail operation down to 2.4V supply, output swing within 350mV of rails at 5V/250Ω, and SO-8 package compatibility with space-constrained industrial sensor interfaces.
Technical Context
The MAX4323ESA uses a dual-stage bipolar input architecture (NPN/PNP) to achieve rail-to-rail common-mode range (VEE to VCC) without phase reversal on overdrive. Its unity-gain stability supports capacitive loads up to 500pF, and internal shutdown logic places outputs in high-impedance state when SHDN ≤ 0.8V.
Designed for single-supply operation (2.4V–6.5V), it maintains 66dB large-signal voltage gain into 250Ω at +25°C and exhibits <2µs settling time to 0.01% for 2V steps - critical for fast-settling ADC driver stages in portable test equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5MHz - enables stable closed-loop gain ≥10 at 500kHz for anti-aliasing filter buffering. |
| Supply Current per Amplifier | 650µA (typ @ 2.4V) - supports >100-hour battery life in handheld data loggers. |
| Input Offset Voltage | ±700µV (typ @ +25°C) - ensures ≤3.5mV error in 5V full-scale 12-bit systems. |
| Output Voltage Swing | VOL–VEE ≤ 350mV, VCC–VOH ≤ 400mV @ 250Ω - preserves >93% dynamic range at 3V supply. |
| Shutdown Supply Current | 25µA (max @ +25°C) - reduces system standby power by >96% vs active mode. |
| Slew Rate | 2V/µs - supports 100kHz full-power sine wave output with <1% distortion. |
| Common-Mode Rejection Ratio | 62dB (min @ –40°C to +85°C) - rejects >800µV of supply ripple in noisy embedded environments. |
Pinout & Package
MAX4323ESA is housed in an 8-pin SO (Small Outline) package compliant with JEDEC MS-012, 150-mil body width, 1.27mm lead pitch. Thermal resistance θJA = 170°C/W enables operation at full rating up to +85°C ambient.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output - rail-to-rail swing, high-impedance during shutdown. |
| 2 | IN− | Inverting input - matched bias current path; requires impedance balancing to minimize offset. |
| 3 | IN+ | Noninverting input - accepts signals from VEE to VCC; no phase reversal on overdrive. |
| 4 | VEE | Negative supply / ground reference - must be bypassed with 0.1µF ceramic + 1µF bulk capacitor. |
| 5 | SHDN | Active-low shutdown control - internal 1µA pull-up; ≤0.8V disables amplifier and asserts high-Z output. |
| 6 | N.C. | No connection - not internally bonded; leave unconnected per design. |
| 7 | VCC | Positive supply - operates from 2.4V to 6.5V single supply or ±1.2V to ±3.25V dual supplies. |
| 8 | N.C. | No connection - not internally bonded; leave unconnected per design. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full 0–VCC signal swing in single-supply 3V systems without level-shifting circuitry. |
| 25µA shutdown mode | Reduces total system quiescent current to µA-level for wake-on-event sensor nodes. |
| 5MHz GBWP at 650µA | Delivers bandwidth-per-power ratio 3× higher than legacy low-power op amps (e.g., LMV321). |
| No phase reversal on overdrive | Prevents latch-up or erroneous ADC codes when inputs exceed supply rails in transient conditions. |
| Stable with 500pF capacitive load | Eliminates need for isolation resistors when driving ADC input capacitance or long PCB traces. |
Applications
| Battery-Powered Instrumentation | Portable Data Acquisition |
|---|---|
Use Scenario: Handheld multimeter front-end amplifying mV-level thermocouple or RTD signals. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with rail-to-rail input enabling zero-V offset measurement. Use Value: 700µV offset and 62dB CMRR ensure <0.1% measurement error across –40°C to +85°C operating range. | Use Scenario: Signal conditioning for 12-bit SAR ADC in portable environmental monitor. IC Role / Device Role / Timing Role: Anti-aliasing filter driver with 2V/µs slew rate and 2µs settling to 0.01%. Use Value: Unity-gain stability into 500pF allows direct connection to ADC input without external compensation. |
| Low-Voltage PA Bias Control | RSSI Signal Conditioning |
Use Scenario: Closed-loop bias voltage generator for Class-AB RF power amplifier in IoT transceivers. IC Role / Device Role / Timing Role: Low-noise, low-drift feedback amplifier setting precise VBE reference under varying temperature. Use Value: 22nV/√Hz input noise and ±2µV/°C tempco maintain PA efficiency within ±0.5dB over temperature. | Use Scenario: Logarithmic amplifier front-end converting RF detector output to linear RSSI voltage. IC Role / Device Role / Timing Role: High-speed, low-offset buffer isolating diode detector from variable load impedance. Use Value: 5MHz bandwidth preserves fast envelope dynamics; shutdown mode cuts bias current during sleep cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV321IDBVR | Lower GBWP (1MHz), no shutdown, higher offset (1.8mV max), SOT23-5 package. | Lacks rail-to-rail output swing at 2.4V; unsuitable for 3V full-scale ADC drivers. | Select when cost sensitivity outweighs bandwidth and shutdown requirements. |
| MCP6001T-E/OT | Higher quiescent current (100µA), no shutdown, 1MHz GBWP, same SO-8 footprint. | Cannot drive 250Ω loads with rail-to-rail swing below 2.7V; limited for low-voltage precision use. | Choose for ultra-low-power sleep modes where shutdown is managed externally. |
Compared with LMV321IDBVR and MCP6001T-E/OT, the MAX4323ESA provides 5× higher bandwidth, integrated shutdown, and guaranteed rail-to-rail operation down to 2.4V - making it uniquely suited for high-fidelity, battery-operated signal chains requiring minimal external components.
Availability
MAX4323ESA is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable data acquisition, low-voltage PA bias control, and RSSI signal conditioning requiring stable component supply across industrial temperature ranges.
Supply support for MAX4323ESA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, medical, and communications applications.
The MAX432x family was engineered specifically for low-voltage, low-power signal conditioning in portable and battery-operated systems - prioritizing rail-to-rail operation, micropower shutdown, and robust capacitive-load drive capability.
FAQ
What is the maximum capacitive load the MAX4323ESA can drive stably?
The MAX4323ESA is unity-gain stable with capacitive loads up to 500pF without external compensation. This is verified in the datasheet's Typical Operating Characteristics (Figure 4) and confirmed by transient response testing (Figures 5–6). Driving larger loads requires an isolation resistor (e.g., 39Ω) in series with the output to maintain phase margin.
Does the MAX4323ESA require external components for single-supply bypassing?
Yes - the MAX4323ESA requires local bypassing at the VCC and VEE pins: a 0.1µF ceramic capacitor in parallel with ≥1µF bulk capacitance. This is specified in the "Power Supplies and Layout" section to suppress supply noise and prevent oscillation, especially critical given its 5MHz bandwidth and 650µA quiescent current.
What is the function of pins 6 and 8 on the MAX4323ESA SO-8 package?
Pins 6 and 8 on the MAX4323ESA are No Connect (N.C.) - they are not internally bonded and serve no electrical function. The datasheet Pin Description table explicitly lists them as "N.C." and advises leaving them unconnected. Routing traces or applying solder to these pins may introduce parasitic coupling or mechanical stress.
How does the MAX4323ESA's shutdown mode affect output state?
When the SHDN pin is pulled ≤0.8V, the MAX4323ESA enters shutdown mode: supply current drops to 25µA (max), and the output is placed in a high-impedance state. This is distinct from output clamping or forced low - the output floats electrically, allowing safe multiplexing or isolation in multi-channel systems without loading downstream circuitry.
Is the MAX4323ESA pin-compatible with other op amps in the MAX432x family?
No - the MAX4323ESA (SO-8) is not pin-compatible with MAX4323EBT (UCSP-6) or MAX4323EUT-T (SOT23-6). While all share identical electrical functionality, the SO-8 variant has dedicated N.C. pins (6,8) and different pin assignments (e.g., SHDN on pin 5), whereas UCSP/SOT23 variants route SHDN to pin 6 and omit N.C. connections entirely.
MAX4323ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 nA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 725µA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.4 V
- Voltage - Supply Span (Max):
- 6.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4323ESA FAQ
1.How can I place an order for MAX4323ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4323ESA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4323ESA reliable?
The price and inventory of MAX4323ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4323ESA is usually 5 days.
3.What payment methods are accepted for MAX4323ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4323ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4323ESA?
MAX4323ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4323ESA order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4323ESA?
For technical support, including MAX4323ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4323ESA requirements.
6.How does Aetrix verify that MAX4323ESA is sourced from the original manufacturer or authorized distributors?
All MAX4323ESA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4323ESA meets industry standards.
7.What is the process for return or replacement of MAX4323ESA?
All MAX4323ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4323ESA, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4323ESA part is unused and in its original packaging.
Return procedure for MAX4323ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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