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Analog Devices Inc./Maxim Integrated MAX4327EUB+
- Part No.:
- MAX4327EUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4327EUB+.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,647
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Product details
Overview
The MAX4327EUB+ from Maxim Integrated is a dual, rail-to-rail input/output operational amplifier optimized for low-voltage, single-supply precision signal conditioning. It features 5MHz gain-bandwidth, 650µA per amplifier quiescent current, ±2.5mV max input offset voltage (TA = +25°C), shutdown mode reducing supply current to 40µA, and drives 250Ω loads - enabling use in battery-powered data-acquisition front-ends.
For engineers reviewing the MAX4327EUB+ datasheet, MAX4327EUB+ pinout, MAX4327EUB+ application, or MAX4327EUB+ equivalent, this page delivers verified electrical specs, µMAX-10 package layout, dual-channel shutdown control behavior, and real-world design implications for portable instrumentation and RSSI systems.
Technical Context
The MAX4327EUB+ implements a bipolar-input stage with complementary NPN/PNP differential pairs to achieve rail-to-rail input common-mode range (VEE to VCC) and output swing within 350mV of rails under 250Ω load. Its unity-gain stability extends to 500pF capacitive loads without external compensation.
Each amplifier operates independently with dedicated SHDN1/SHDN2 pins, enabling selective channel disablement. Shutdown places outputs in high-impedance state while drawing only 40µA per channel at VCC = 5V, supporting dynamic power management in multi-stage analog signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5MHz - supports stable closed-loop operation up to ~100kHz at AV = +10 with minimal phase margin degradation. |
| Supply Current per Amplifier | 650µA at VCC = 2.4V - enables >100-hour operation on a 200mAh coin cell in active mode. |
| Input Offset Voltage | ±2.5mV max (TA = +25°C) - limits DC error to <0.5% full-scale in 12-bit 5V-range ADC front-ends. |
| Output Voltage Swing | VOL ≤ 300mV above VEE, VOH ≥ VCC − 400mV into 250Ω - preserves >92% dynamic range with 3V supply. |
| Shutdown Supply Current | 40µA per amplifier (VCC = 5V) - reduces system standby power by >93% versus active mode. |
| Capacitive Load Stability | Stable with CL ≤ 500pF - eliminates need for isolation resistors in anti-aliasing filter interfaces. |
| Slew Rate | 2V/µs - supports 100kHz full-scale sine wave output with <1% distortion at 2VP-P. |
Pinout & Package
The MAX4327EUB+ is housed in a 10-pin µMAX package (3.0mm × 3.0mm, 0.5mm pitch), thermally enhanced with exposed paddle connected to VEE for improved power dissipation and noise immunity.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - directly drives ADC input or next-stage buffer; high-impedance during SHDN1 assert. |
| 2 | IN1− | Inverting input for Amp1 - matched impedance routing required to minimize bias-current-induced offset. |
| 3 | IN1+ | Noninverting input for Amp1 - accepts signals from 0V to VCC with rail-to-rail CMVR. |
| 4 | VEE | Negative supply / ground reference - must be low-impedance; connects to exposed thermal pad. |
| 5 | VCC | Positive supply - requires local 0.1µF ceramic + 1µF tantalum bypassing per amplifier pair. |
| 6 | IN2+ | Noninverting input for Amp2 - independent of Amp1; enables dual-path signal processing. |
| 7 | IN2− | Inverting input for Amp2 - polarity reversal avoided via internal input stage architecture. |
| 8 | OUT2 | Amplifier 2 output - electrically isolated from OUT1; supports independent load driving. |
| 9 | SHDN2 | Shutdown control for Amp2 - logic-low (<0.8V) disables Amp2; floating or high (>2.0V) enables. |
| 10 | SHDN1 | Shutdown control for Amp1 - independent timing; tON/tOFF ≤ 1µs/0.2µs ensures fast channel reactivation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full 0–VCC signal swing in single-supply 2.4V–6.5V systems, eliminating level-shifting circuitry. |
| Dual independent shutdown | Per-channel SHDN1/SHDN2 pins allow asymmetric power gating - e.g., keep Amp1 active for monitoring while disabling Amp2 during sleep. |
| 500pF capacitive-load stability | Drives anti-aliasing filters or long PCB traces directly without series isolation resistors or phase-compensation networks. |
| No phase reversal on overdrive | Prevents latch-up or erroneous output transitions when inputs exceed CMVR - critical for sensor fault detection circuits. |
| Low 700µV typical offset | Reduces calibration overhead in precision transducer interfaces; maintains accuracy across −40°C to +85°C. |
Applications
| Battery-Powered Instrumentation | RSSI Signal Conditioning |
|---|---|
Use Scenario: Portable multimeter front-end amplifying mV-level thermocouple or shunt voltage signals. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with rail-to-rail input enabling full-scale measurement from 0V reference. Use Value: 650µA quiescent current extends battery life; ±2.5mV offset ensures <0.05% reading error at 5V full scale. | Use Scenario: RF receiver path where logarithmic amplifier output feeds analog-to-digital conversion. IC Role / Device Role / Timing Role: Low-noise buffer isolating RSSI detector from ADC input capacitance. Use Value: 22nV/√Hz input noise density preserves weak-signal SNR; 5MHz GBW supports fast AGC loop response. |
| Portable Medical Sensors | Low-Voltage Data Acquisition |
Use Scenario: ECG electrode amplifier stage operating from 3.3V Li-ion supply with integrated lead-off detection. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier driver with shutdown capability during patient idle periods. Use Value: Dual shutdown reduces system standby power by >90%; rail-to-rail output drives SAR ADC reference range fully. | Use Scenario: Industrial sensor node digitizing temperature, pressure, and humidity with microcontroller ADC. IC Role / Device Role / Timing Role: Multi-channel signal conditioner providing matched gain/offset correction before multiplexed ADC sampling. Use Value: Independent SHDN1/SHDN2 allows per-sensor power gating; 500pF load drive simplifies RC filter integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8605ARMZ | Single-channel, 10MHz GBW, 1pA IB, but no shutdown function and higher 1mA ICC. | Lacks dual-channel and shutdown - unsuitable for power-gated multi-signal paths. | Select when ultra-low input bias current dominates over power savings and channel count. |
| TSV912IDT | Dual-channel, rail-to-rail I/O, 8MHz GBW, 550µA ICC, but no shutdown and 1.1mV VOS typ. | Higher bandwidth but no power-down capability - increases system standby consumption. | Choose for higher-speed signal chains where shutdown is unnecessary and lower offset not critical. |
Compared with AD8605ARMZ and TSV912IDT, the MAX4327EUB+ uniquely delivers dual-channel operation with independent shutdown, sub-1µA shutdown current, and guaranteed rail-to-rail performance down to 2.4V - making it optimal for space-constrained, battery-sensitive dual-signal applications.
Availability
The MAX4327EUB+ is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical sensors, RSSI signal conditioning, and low-voltage data acquisition requiring stable component supply across industrial temperature ranges.
Supply support for MAX4327EUB+ 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 and mixed-signal ICs for demanding industrial, medical, and communications applications.
The MAX4327EUB+ belongs to the MAX432x family of low-power, rail-to-rail op amps engineered specifically for high-accuracy, low-voltage signal conditioning in portable and energy-conscious systems.
FAQ
What is the maximum capacitive load the MAX4327EUB+ can drive stably?
The MAX4327EUB+ remains stable with capacitive loads up to 500pF in unity-gain configuration without external compensation. This is confirmed in the datasheet's Typical Operating Characteristics (Figure 4) and Applications Information section, which states "stable with capacitive loads up to 500pF" and provides transient response plots (Figures 5–6) validating stability at that limit. Exceeding 500pF may cause peaking or oscillation unless an isolation resistor is added.
Does the MAX4327EUB+ support true rail-to-rail input common-mode voltage range?
Yes, the MAX4327EUB+ supports rail-to-rail input common-mode voltage range from VEE to VCC, as explicitly stated in the General Description and Pin Description sections. Its input stage uses complementary NPN/PNP differential pairs to maintain functionality across the full supply range - verified by CMVR = VEE to VCC in DC Electrical Characteristics tables and confirmed in Figure 3 (Rail-to-Rail Input/Output Voltage Range).
How does shutdown operation affect the output state of the MAX4327EUB+?
When either SHDN1 or SHDN2 is pulled low (<0.8V), the corresponding amplifier output enters a high-impedance (Hi-Z) state, effectively disconnecting it from the load. This is documented in the General Description ("places the outputs in a high-impedance state") and Applications Information ("outputs in a high-impedance state"). The Hi-Z condition prevents loading of downstream circuitry and avoids contention in multiplexed or shared-bus configurations.
What is the typical input offset voltage of the MAX4327EUB+ at room temperature?
The typical input offset voltage of the MAX4327EUB+ is 700µV at TA = +25°C, as specified in the Features list and confirmed in the DC Electrical Characteristics table (MAX432_ESA/MAX4327ESD row, VOS TYP = ±0.7mV). This value applies across all package variants including the µMAX-10 (EUB), and is measured under standard conditions: VCC = 5.0V, VEE = 0V, VCM = 0V, VOUT = VCC/2.
Can the MAX4327EUB+ operate from a 2.4V single supply?
Yes, the MAX4327EUB+ is fully specified to operate from a 2.4V to 6.5V single supply, as stated in the General Description, Features list, and Absolute Maximum Ratings. Electrical characteristics including GBWP = 5MHz, ICC = 650µA, and output swing are guaranteed across this range. The Typical Operating Characteristics section includes plots at VCC = 2.7V and VCC = 6.5V, confirming functional integrity at the 2.4V minimum.
MAX4327EUB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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 (x2 Channels)
- 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:
- 10-uMAX/uSOP
MAX4327EUB+ FAQ
1.How can I place an order for MAX4327EUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4327EUB+ 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 MAX4327EUB+ reliable?
The price and inventory of MAX4327EUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4327EUB+ is usually 5 days.
3.What payment methods are accepted for MAX4327EUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4327EUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4327EUB+?
MAX4327EUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4327EUB+ 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 MAX4327EUB+?
For technical support, including MAX4327EUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4327EUB+ requirements.
6.How does Aetrix verify that MAX4327EUB+ is sourced from the original manufacturer or authorized distributors?
All MAX4327EUB+ 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 MAX4327EUB+ meets industry standards.
7.What is the process for return or replacement of MAX4327EUB+?
All MAX4327EUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4327EUB+, 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 MAX4327EUB+ part is unused and in its original packaging.
Return procedure for MAX4327EUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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