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Analog Devices Inc./Maxim Integrated MAX4322EUK-G103
- Part No.:
- MAX4322EUK-G103
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4322EUK-G103.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,062
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Product details
Overview
MAX4322EUK-G103 from Maxim Integrated is a single-channel, rail-to-rail input/output operational amplifier optimized for low-voltage, battery-powered signal conditioning. It delivers 5MHz gain-bandwidth, 650µA quiescent current per amplifier, ±700µV offset voltage (typ), and drives 250Ω loads - enabling precision data-acquisition in portable medical sensors and RSSI circuits.
For engineers reviewing the MAX4322EUK-G103 datasheet, MAX4322EUK-G103 pinout, MAX4322EUK-G103 application, or MAX4322EUK-G103 equivalent, key selection criteria include rail-to-rail I/O swing at 2.4V–6.5V supply, shutdown capability absence (vs. MAX4323/MAX4327), SOT23-5 package footprint, and unity-gain stability with ≤500pF capacitive loads.
Technical Context
This op amp employs a dual-input-stage architecture (NPN + PNP differential pairs) to achieve rail-to-rail common-mode input range extending from VEE to VCC, with switchover near VCC/2 to minimize CMRR degradation. Its bipolar process ensures low noise (22nV/√Hz) and high slew rate (2V/µs).
The device operates from single supplies (2.4V–6.5V) or dual supplies (±1.2V–±3.25V), features no phase reversal on overdriven inputs, and maintains stability driving 250Ω loads while delivering 70–86dB large-signal voltage gain across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5MHz - supports stable closed-loop operation up to 500kHz at unity gain for anti-aliasing filters. |
| Supply Current per Amplifier | 650µA (typ at VCC = 2.4V) - enables >100-hour operation on coin-cell batteries in portable instrumentation. |
| Input Offset Voltage | ±700µV (typ at TA = +25°C) - limits DC error to <1.4mV in 2V full-scale sensor interfaces. |
| Rail-to-Rail Output Swing | VOL − VEE ≤ 12mV / VCC − VOH ≤ 15mV (RL = 100kΩ) - preserves dynamic range in 3V ADC front-ends. |
| Capacitive-Load Stability | Stable with ≤500pF - eliminates need for isolation resistors when driving ADC input capacitance or long PCB traces. |
| Common-Mode Input Range | VEE to VCC - accepts ground-referenced or rail-referenced sensor outputs without level-shifting. |
| Slew Rate | 2V/µs - settles 2V step within 2.0µs to 0.01%, suitable for fast-settling multiplexed data acquisition. |
Pinout & Package
MAX4322EUK-G103 is housed in a 5-pin SOT23-5 package (JEDEC MO-178AA), with 1.6mm × 2.9mm footprint and 0.95mm height - compatible with standard pick-and-place and reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Amplifier output | Delivers rail-to-rail voltage swing; high-impedance when unused (no internal pull-up/down). |
| 2 - IN− | Inverting input | Differential node for feedback networks; 3pF input capacitance affects high-frequency stability. |
| 3 - IN+ | Noninverting input | Accepts signals from VEE to VCC; bias current polarity flips near VCC/2 due to dual-input-stage design. |
| 4 - VEE | Negative supply / ground | Reference for single-supply operation; substrate tied to VEE per bipolar process. |
| 5 - VCC | Positive supply | Supports 2.4V–6.5V range; requires 0.1µF ceramic + ≥1µF bulk capacitor for PSRR optimization. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Input Common-Mode Range | Extends from VEE to VCC - eliminates external level shifters for ground- or rail-referenced transducer outputs. |
| No Phase Reversal on Overdrive | Prevents latch-up or erroneous output transitions when inputs exceed supply rails - critical for fault-tolerant sensor interfaces. |
| Unity-Gain Stable with Capacitive Loads | Operates reliably with up to 500pF load capacitance - simplifies anti-aliasing filter integration without series isolation resistors. |
| Low Input Bias Current Mismatch | IOS ≤ ±12nA (typ) - reduces offset error in high-impedance photodiode or pH electrode amplifiers. |
| High Power-Supply Rejection | PSRR ≥ 66dB (2.4V–6.5V) - maintains accuracy in noisy battery-supplied systems with switching regulators. |
Applications
| Battery-Powered Medical Sensors | RSSI Signal Conditioning |
|---|---|
Use Scenario: Amplifying low-level ECG or pulse oximeter transducer outputs in wearable monitors powered by CR2032 cells. IC Role / Device Role / Timing Role: Primary signal-conditioning stage providing gain, filtering, and ADC drive capability. Use Value: 650µA quiescent current extends battery life beyond 120 hours; rail-to-rail I/O maximizes SNR in 3V ADC interfaces. | Use Scenario: Converting RF detector diode output to linear voltage proportional to received signal strength in cellular IoT modules. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with low offset and high PSRR to reject switching noise. Use Value: ±700µV offset ensures <0.5dB RSSI measurement error; 5MHz GBW supports fast AGC loop response. |
| Portable Data-Acquisition Systems | Low-Voltage PA Bias Control |
Use Scenario: Front-end amplification for 12-bit SAR ADCs in handheld test equipment operating from 3.3V USB power. IC Role / Device Role / Timing Role: Driver and buffer between multiplexer and ADC sample-hold input. Use Value: 2V/µs slew rate achieves 2.0µs settling to 0.01%; 250Ω drive capability directly interfaces ADC input capacitance. | Use Scenario: Generating precise, temperature-stable bias voltages for Class-AB power amplifier stages in portable audio devices. IC Role / Device Role / Timing Role: Low-drift reference buffer and current source controller. Use Value: 2µV/°C offset tempco minimizes thermal drift; rail-to-rail output ensures full 0–3.3V control range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail, low-power op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4323EUT-T | Includes SHDN pin (25µA shutdown current); same GBW, offset, and package footprint but adds enable/disable control. | Required where system-level power gating is needed; not drop-in due to extra SHDN pin and different pinout. | Select MAX4323EUT-T only if active shutdown functionality is mandatory and PCB layout accommodates 6-pin SOT23. |
| TLV2461IDBVR | Lower quiescent current (230µA), lower GBW (6.4MHz), higher offset (1.5mV typ), same SOT23-5 package. | Better suited for ultra-low-power, lower-speed applications where offset tolerance >1mV is acceptable. | Choose TLV2461IDBVR when battery life is prioritized over bandwidth and DC precision in cost-sensitive designs. |
Compared with MAX4323EUT-T, MAX4322EUK-G103 offers simpler control (no SHDN pin) and identical AC performance but lacks power gating; versus TLV2461IDBVR, it trades 420µA higher supply current for 2× lower offset and tighter CMRR - favoring precision analog front-ends.
Availability
MAX4322EUK-G103 is available at Aetrix Electronics and suitable for battery-powered medical sensors, portable data-acquisition systems, and RSSI signal conditioning requiring stable component supply across industrial temperature ranges (−40°C to +85°C).
Supply support for MAX4322EUK-G103 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 MAX4322 belongs to Maxim's low-power, rail-to-rail op amp product line engineered for high-fidelity signal conditioning in space-constrained, battery-operated systems where DC accuracy and wide supply range are critical.
FAQ
What supply voltage range does the MAX4322EUK-G103 support?
The MAX4322EUK-G103 operates from a single supply of 2.4V to 6.5V or dual supplies of ±1.2V to ±3.25V. At 2.4V, it maintains full rail-to-rail input/output swing and 5MHz gain-bandwidth, making it ideal for coin-cell or Li-ion powered systems where headroom is constrained. The device's PSRR remains ≥66dB across this entire range.
Does the MAX4322EUK-G103 have a shutdown feature?
No, the MAX4322EUK-G103 does not include a shutdown function. Unlike the pin-compatible MAX4323EUT-T (SOT23-6) or MAX4327 variants, this variant omits the SHDN terminal. Its supply current remains fixed at 650µA (typ) under all operating conditions - simplifying power sequencing but precluding system-level power gating.
What is the maximum capacitive load the MAX4322EUK-G103 can drive stably?
The MAX4322EUK-G103 is unity-gain stable with capacitive loads up to 500pF, as verified in the datasheet's Figure 4 and transient response plots (Figures 5–6). This allows direct connection to typical 10–20pF ADC input capacitances plus 400–480pF of PCB trace capacitance without requiring an isolation resistor - reducing component count and board area.
How does the rail-to-rail input stage of the MAX4322EUK-G103 work?
The MAX4322EUK-G103 uses complementary NPN and PNP input differential pairs that switch near VCC/2 to extend the common-mode range from VEE to VCC. This architecture avoids input stage saturation at supply rails, enabling accurate amplification of ground- or rail-referenced sensor signals. Input bias current polarity reverses across the transition region, requiring matched source impedances to minimize offset error.
What is the typical input offset voltage specification for the MAX4322EUK-G103?
The MAX4322EUK-G103 has a typical input offset voltage of ±700µV at +25°C (DC Electrical Characteristics table), with a maximum of ±2.5mV across the full −40°C to +85°C temperature range. Its offset tempco is ±2µV/°C, ensuring minimal drift in precision DC-coupled applications such as thermocouple amplifiers or strain gauge bridges.
MAX4322EUK-G103 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 1.2 mV
- 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:
- SOT-23-5
MAX4322EUK-G103 FAQ
1.How can I place an order for MAX4322EUK-G103 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4322EUK-G103 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 MAX4322EUK-G103 reliable?
The price and inventory of MAX4322EUK-G103 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4322EUK-G103 is usually 5 days.
3.What payment methods are accepted for MAX4322EUK-G103?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4322EUK-G103 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4322EUK-G103?
MAX4322EUK-G103 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4322EUK-G103 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 MAX4322EUK-G103?
For technical support, including MAX4322EUK-G103 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4322EUK-G103 requirements.
6.How does Aetrix verify that MAX4322EUK-G103 is sourced from the original manufacturer or authorized distributors?
All MAX4322EUK-G103 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 MAX4322EUK-G103 meets industry standards.
7.What is the process for return or replacement of MAX4322EUK-G103?
All MAX4322EUK-G103 units undergo pre-shipment inspection (PSI). If there is an issue with MAX4322EUK-G103, 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 MAX4322EUK-G103 part is unused and in its original packaging.
Return procedure for MAX4322EUK-G103:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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