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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 CIRC 10UMAX/USOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,319
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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 delivers 5MHz gain-bandwidth, 650µA per amplifier quiescent current, ±700µV offset voltage (typ), and supports shutdown mode reducing supply current to 40µA (typ) while placing outputs in high-impedance state - ideal for battery-powered data-acquisition front-ends.
For engineers reviewing the MAX4327EUB datasheet, MAX4327EUB pinout, MAX4327EUB application, or MAX4327EUB equivalent, key selection criteria include its dual-channel rail-to-rail I/O performance at 2.4V–6.5V supply, 250Ω load drive capability, 250mV output swing from rails (RL = 250Ω), and independent shutdown control per amplifier - critical for portable instrumentation and low-power sensor interfaces.
Technical Context
The MAX4327EUB implements a bipolar-input stage with complementary NPN/PNP differential pairs enabling true rail-to-rail input common-mode range (VEE to VCC) and output swing within 250mV of either rail under 250Ω load. Its unity-gain-stable architecture supports capacitive loads up to 500pF without external compensation.
Each amplifier features independent shutdown logic (SHDN1/SHDN2 pins) with TTL-compatible thresholds (VIH = 2.0V, VIL = 0.8V), enabling selective channel disablement. The device operates across -40°C to +85°C and maintains 66dB large-signal voltage gain (RL = 250Ω) and 59dB CMRR over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5MHz - enables stable unity-gain operation with bandwidth sufficient for 10kHz sensor signals and RSSI envelope detection. |
| Supply Current per Amplifier | 650µA (typ @ 2.4V) - allows dual-channel operation from coin-cell or single Li-ion battery for >1-year portable device runtime. |
| Input Offset Voltage | ±700µV (typ @ +25°C) - ensures <1mV error in 12-bit ADC front-end with 2.5V reference and 10kΩ source impedance. |
| Output Voltage Swing | Within 250mV of rails (RL = 250Ω) - preserves full dynamic range in 3V single-supply systems driving analog switches or ADC inputs. |
| Shutdown Supply Current | 40µA (typ per amp @ +25°C) - reduces total system standby power to sub-100µA when one channel is disabled during sleep mode. |
| Common-Mode Rejection Ratio | 59dB (min @ -40°C to +85°C) - suppresses supply ripple and ground noise in noisy embedded environments like motor-control feedback paths. |
| Slew Rate | 2V/µs - supports clean 10kHz sine-wave amplification with <0.01% THD+N and 2Vpp output swing. |
Pinout & Package
The MAX4327EUB is housed in a 10-pin µMAX package (3.0mm × 3.0mm, 0.5mm pitch), thermally enhanced for low-power op-amp operation in space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8, 10 | OUT1, OUT2 | Dual independent amplifier outputs; high-impedance during respective SHDN assertion. |
| 2, 6 | IN1-, IN2- | Inverting inputs; accept rail-to-rail common-mode voltages (VEE to VCC) with no phase reversal on overdrive. |
| 3, 5 | IN1+, IN2+ | Noninverting inputs; matched bias current minimizes offset error when external impedances are balanced. |
| 4, 7 | VEE | Negative supply / ground reference; substrate tied to VEE for optimal noise immunity in single-supply configurations. |
| 7, 9 | SHDN1, SHDN2 | Independent TTL-level shutdown controls; floating or high = enabled; ≤0.8V = disabled with 40µA shutdown current per amp. |
| 10 | VCC | Positive supply; operates from 2.4V to 6.5V single supply or ±1.2V to ±3.25V dual supplies. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input/output | Enables full-scale signal acquisition from 0V to VCC in single-supply 3V systems without level-shifting circuitry. |
| Independent dual-channel shutdown | Reduces system power by disabling unused amplifier (e.g., RSSI detector) while keeping PA bias channel active. |
| 500pF capacitive-load stability | Drives ADC input capacitance or long traces directly without isolation resistor, simplifying layout and saving BOM cost. |
| No phase reversal on overdriven inputs | Prevents latch-up or erroneous output states when input exceeds supply rails - critical for fault-tolerant sensor interfaces. |
| Unity-gain stable with 500pF load | Eliminates need for external compensation networks in gain-of-one configurations used in buffer and level-shift applications. |
Applications
| Battery-Powered Data Acquisition | RSSI Signal Detection |
|---|---|
Use Scenario: Portable environmental sensor node measuring temperature/humidity with 12-bit SAR ADC. IC Role / Device Role / Timing Role: Dual op-amp buffers and signal conditioners: one channel drives ADC reference, second conditions sensor output. Use Value: 650µA per amplifier and shutdown mode extend CR2032 battery life beyond 2 years; rail-to-rail I/O maximizes ADC utilization. | Use Scenario: Cellular/WiFi module measuring received signal strength for adaptive transmit power control. IC Role / Device Role / Timing Role: Precision logarithmic amplifier front-end converting RF detector output to linear voltage. Use Value: ±700µV offset and 5MHz GBW enable accurate 10kHz envelope tracking; dual channels allow simultaneous RSSI and AGC path processing. |
| Portable Medical Instrumentation | Low-Voltage PA Bias Control |
Use Scenario: Handheld ECG monitor amplifying microvolt-level biopotentials with DC-coupled front-end. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier driver with rail-to-rail input enabling zero-bias electrode interface. Use Value: Input common-mode range to VEE eliminates need for negative supply; 250mV output swing preserves SNR into 10kΩ ADC input. | Use Scenario: Bluetooth audio transmitter adjusting power amplifier bias based on battery voltage and output power demand. IC Role / Device Role / Timing Role: Dual-channel voltage-controlled current source generating precise PA bias currents. Use Value: Independent SHDN1/SHDN2 allow dynamic channel disablement during low-power modes; 2.4V min supply supports operation down to depleted Li-ion cells. |
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 |
|---|---|---|---|
| AD8602ARMZ | Single-supply only (2.7V–6V); no shutdown; 10MHz GBW; 1pA IB; 300µV VOS (typ) | Lacks independent shutdown; higher bandwidth but higher IQ (1mA); better for precision DC-coupled sensors | Select when ultra-low input bias current or lower offset is required and shutdown is unnecessary. |
| TSV912IDT | 2.5V–5.5V supply; no shutdown; 8MHz GBW; 5.5V/µs SR; 1.1mV VOS (max) | No shutdown function; higher slew rate but larger offset; automotive-qualified (-40°C to +125°C) | Choose for AEC-Q100-compliant designs where shutdown is not needed and extended temperature range is mandatory. |
Compared with AD8602ARMZ and TSV912IDT, the MAX4327EUB uniquely provides independent dual-channel shutdown in a 10-pin µMAX package with guaranteed 250mV rail-to-rail swing into 250Ω - making it optimal for space-constrained, battery-sensitive dual-path signal chains requiring selective power gating.
Availability
The MAX4327EUB is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical devices, and low-voltage RF subsystems requiring stable component supply with full traceability and long-term lifecycle support.
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, mixed-signal, and power-management ICs for demanding industrial, medical, and communications applications.
The MAX4327EUB belongs to the MAX432x family of low-power, rail-to-rail I/O op-amps engineered specifically for precision, low-voltage data-acquisition systems operating from single supplies as low as 2.4V.
FAQ
What is the maximum capacitive load the MAX4327EUB can drive without oscillation?
The MAX4327EUB is unity-gain stable with capacitive loads up to 500pF, as confirmed in the datasheet's Typical Operating Characteristics (Figure 4). This allows direct connection to ADC input capacitance or long PCB traces without requiring an isolation resistor - simplifying design and improving signal integrity in compact layouts.
Does the MAX4327EUB support dual-supply operation?
Yes, the MAX4327EUB operates from dual supplies ranging from ±1.2V to ±3.25V, in addition to single supplies from 2.4V to 6.5V. Its rail-to-rail input and output stages maintain full functionality across both configurations, making it suitable for legacy ±2.5V systems or modern low-voltage single-supply designs.
How does the shutdown feature work on the MAX4327EUB?
The MAX4327EUB has two independent shutdown pins (SHDN1 and SHDN2). Pulling either pin ≤0.8V disables its corresponding amplifier, reducing supply current to 40µA (typ) and placing the output in high-impedance state. Floating or pulling ≥2.0V enables the channel - internal 1µA pullup ensures default-enable behavior if left unconnected.
What is the typical output voltage swing of the MAX4327EUB into a 250Ω load?
At room temperature and VCC = 5V, the MAX4327EUB delivers a minimum output swing of VEE + 250mV and maximum of VCC – 250mV into a 250Ω load referenced to VEE or VCC/2. This rail-to-rail performance ensures >90% of full-scale dynamic range is usable in 3V systems, critical for maximizing ADC resolution.
Is the MAX4327EUB pin-compatible with other devices in the MAX432x family?
No - the MAX4327EUB uses a 10-pin µMAX package with dedicated SHDN1/SHDN2 pins, whereas MAX4322 (SOT23-5) and MAX4323 (UCSP-6/SOT23-6) have different pin counts and functions. Pin compatibility exists only within same-package variants (e.g., MAX4327ESD in 14-pin SO shares pinout with MAX4329ESD).
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:
- Obsolete
- 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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