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Analog Devices Inc./Maxim Integrated MAX4333ESD
- Part No.:
- MAX4333ESD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4333ESD.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,566
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Product details
Overview
MAX4333ESD from Maxim Integrated is a dual, low-power, rail-to-rail input/output operational amplifier with shutdown control, operating from +2.3V to +6.5V single supply. It delivers 3MHz gain-bandwidth, 245µA quiescent current per amplifier, ±0.25mV typical input offset voltage, and rail-to-rail output swing within 125mV of both rails into 2kΩ loads - ideal for precision signal conditioning in battery-powered data-acquisition systems.
For engineers reviewing the MAX4333ESD datasheet, MAX4333ESD pinout, MAX4333ESD application, or MAX4333ESD equivalent, key selection criteria include its dual-channel configuration with independent shutdown pins (SHDN1/SHDN2), 14-pin SO package, -40°C to +85°C temperature range, and verified performance down to 2.0V supply - critical for portable medical sensors and low-voltage industrial analog front-ends.
Technical Context
The MAX4333ESD implements a composite rail-to-rail input stage using parallel NPN and PNP differential pairs, enabling common-mode input range extending 250mV beyond VEE and VCC. Its output stage uses complementary push-pull circuitry to achieve rail-to-rail swing while driving 2kΩ loads without phase reversal on overdriven inputs.
Each amplifier features independent CMOS-compatible shutdown control (SHDN1/SHDN2) that reduces supply current to 9µA per amp and places the output in high-impedance state. The device is unity-gain stable and supports capacitive loads up to 150pF without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 3MHz - enables stable amplification of signals up to ~1.5MHz at unity gain in precision sensor interfaces. |
| Quiescent Current per Amp | 245µA - allows dual-channel operation at <500µA total, suitable for multi-day battery life in portable instrumentation. |
| Input Offset Voltage | ±0.25mV (typ) - ensures <0.5LSB error in 12-bit ADC front-ends with 5V full-scale range. |
| Output Swing | Rail-to-rail, within 125mV of rails into 2kΩ - preserves dynamic range in single-supply 3.3V systems with 0–3.3V ADCs. |
| Shutdown Current per Amp | 9µA (typ) - reduces system standby power by >96% versus active mode, critical for wake-on-event architectures. |
| Common-Mode Input Range | VEE – 0.25V to VCC + 0.25V - accepts inputs below ground or above supply, simplifying level-shifting in mixed-signal circuits. |
| Supply Voltage Range | +2.3V to +6.5V single supply - operates across Li-ion (3.0–4.2V), coin-cell (3V), and regulated 5V rails without redesign. |
Pinout & Package
MAX4333ESD is housed in a 14-pin small-outline (SO) package with standard 1.27mm pitch, JEDEC MS-012AC compliant, body size 8.65mm × 3.91mm × 1.75mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7 | IN1+, IN2+ | Noninverting inputs for Amplifier 1 and 2 - high-impedance nodes requiring matched source impedances to minimize bias-current-induced offset. |
| 2, 6 | IN1-, IN2- | Inverting inputs for Amplifier 1 and 2 - accept feedback networks; internal 1kΩ series resistors provide ESD protection. |
| 3, 5 | OUT1, OUT2 | Amplifier outputs - rail-to-rail capable, high-impedance in shutdown, drive 2kΩ loads directly without buffer stages. |
| 4 | VEE | Negative supply / ground reference - substrate tied to VEE; must be bypassed with 0.1µF capacitor for stability. |
| 8, 14 | SHDN1, SHDN2 | Independent shutdown controls - logic-low (<0.8V) disables respective amplifier; no pull-up required (internal bias). |
| 10 | VCC | Positive supply - accepts 2.3V–6.5V; bypassing mandatory for noise-sensitive applications like sensor signal chains. |
| 9, 13 | N.C. | No connection - not internally bonded; must remain unconnected to avoid parasitic coupling or latch-up risk. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full utilization of 0–VCC input range and output swing in single-supply systems, eliminating level-shifting components. |
| Dual independent shutdown | Per-amplifier SHDN1/SHDN2 pins allow selective power gating - e.g., disable channel 2 during sleep while keeping channel 1 monitoring active. |
| 250mV beyond rails CMVR | Supports input signals below ground (e.g., AC-coupled transducer outputs) without clamping diodes or external bias networks. |
| 150pF capacitive load stability | Drives long PCB traces or ADC input capacitance directly, avoiding isolation resistors that degrade bandwidth and SNR. |
| No phase reversal on overdrive | Prevents catastrophic output latching when inputs exceed common-mode range - essential for fault-tolerant industrial sensors. |
Applications
| Portable ECG Monitor Front-End | Industrial 4–20mA Loop Receiver |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in ultra-low-power wearable ECG devices. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: Channel 1 buffers electrode input; Channel 2 drives 12-bit SAR ADC with rail-to-rail swing. Use Value: 245µA per amp enables >7-day battery life on CR2032; shutdown mode cuts idle current to 18µA for motion-triggered acquisition. |
Use Scenario: Converting 4–20mA loop current to 0–5V for PLC analog inputs in factory automation systems. IC Role / Device Role / Timing Role: Precision I/V converter with rail-to-rail output driving ADC reference buffer; second amp conditions thermocouple cold-junction signal. Use Value: ±0.25mV offset ensures <0.01% FSR error across 16-bit resolution; 3MHz GBW supports fast loop diagnostics up to 10kHz. |
| Handheld Gas Sensor Signal Chain | Battery-Powered pH Meter |
Use Scenario: Amplifying low-current outputs (nA–µA) from electrochemical gas sensors with minimal power draw. IC Role / Device Role / Timing Role: Transimpedance amplifier (Channel 1) + reference buffer (Channel 2) for ratiometric ADC measurement. Use Value: 2.3V minimum supply allows direct operation from single alkaline cell; shutdown extends shelf life by reducing leakage to 9µA/amp. |
Use Scenario: Conditioning high-impedance glass electrode outputs (≥10¹²Ω) in field-deployable water quality testers. IC Role / Device Role / Timing Role: Electrometer-grade buffer (Channel 1) + temperature-compensated reference generator (Channel 2). Use Value: Rail-to-rail input accepts ±0.25V beyond rails - accommodates electrode drift without external bias; 250µV offset maintains ±0.01pH accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual op-amp with shutdown applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462IDR | Higher quiescent current (550µA/amp), no rail-to-rail input (CMVR = VEE to VCC – 1.3V), no independent shutdown pins. | Suitable only for non-critical, higher-power systems where input headroom >1.3V is available. | Select MAX4333ESD when rail-to-rail input, sub-250µA/amp operation, or per-channel shutdown is required. |
| MCP6L92-E/SN | Lower GBW (1.7MHz), no shutdown function, 10-pin MSOP package (smaller footprint but no SHDN pins). | Applicable where space is constrained and shutdown is managed externally via supply switching. | Choose MAX4333ESD for integrated shutdown control, 3MHz bandwidth, and guaranteed 2.3V operation - critical for battery voltage sag scenarios. |
Compared with TLV2462IDR and MCP6L92-E/SN, the MAX4333ESD uniquely combines dual independent shutdown, true rail-to-rail input/output, and 3MHz bandwidth at <250µA/amp - making it the only option for precision, ultra-low-power, multi-mode analog front-ends in portable instrumentation.
Availability
MAX4333ESD is available at Aetrix Electronics and suitable for portable medical devices, industrial 4–20mA receivers, handheld environmental sensors, and battery-powered test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4333ESD 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 MAX4330–MAX4334 family was engineered specifically for low-voltage, single-supply signal conditioning in portable and energy-constrained systems - emphasizing rail-to-rail performance, micropower operation, and robust input/output behavior under real-world supply and load conditions.
FAQ
What is the minimum operating voltage for MAX4333ESD?
The MAX4333ESD is specified to operate from +2.3V to +6.5V single supply, but characterization data shows reliable functionality down to +2.0V across the -40°C to +85°C temperature range. This margin supports brown-out resilience in aging batteries or unregulated power sources, and the MAX4333ESD maintains rail-to-rail output swing and 3MHz bandwidth even at 2.0V.
Does MAX4333ESD support dual-supply operation?
Yes, the MAX4333ESD supports dual-supply operation from ±1.15V to ±3.25V. In this configuration, VEE becomes the negative rail (e.g., -1.15V), VCC the positive rail (e.g., +1.15V), and SHDN logic thresholds remain referenced to VEE. The rail-to-rail input common-mode range extends 250mV beyond both rails, enabling full utilization of the ±1.15V span.
How does the shutdown feature work on MAX4333ESD?
The MAX4333ESD provides two independent shutdown pins: SHDN1 (Pin 8) controls Amplifier 1, and SHDN2 (Pin 14) controls Amplifier 2. Driving either pin below 0.8V (relative to VEE) disables the corresponding amplifier, reducing its supply current to 9µA (typ) and placing its output in high-impedance state. No external pull-up is needed - internal bias ensures defined logic levels.
What is the maximum capacitive load the MAX4333ESD can drive stably?
The MAX4333ESD is characterized for stable operation with capacitive loads up to 150pF when driving resistive loads ≥2kΩ. The Capacitive Load Stability graph in the datasheet defines the stable region - for example, it remains stable with 100pF load into 10kΩ, but requires series isolation resistance if driving >150pF. This eliminates need for external compensation in most sensor and ADC interface applications.
Is MAX4333ESD pin-compatible with other devices in the MAX4330–MAX4334 family?
No - the MAX4333ESD in 14-pin SO has a unique pinout optimized for dual amplifiers with independent shutdown. It is not pin-compatible with the 8-pin SO MAX4332ESA (no shutdown) or 10-pin µMAX MAX4333EUB. Pin compatibility exists only within same package variants: MAX4333ESD and MAX4334ESD share identical 14-pin SO footprints but differ in channel count and SHDN pin mapping.
MAX4333ESD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.5V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 25 nA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 275µA (x2 Channels)
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 2.3 V
- Voltage - Supply Span (Max):
- 6.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MAX4333ESD FAQ
1.How can I place an order for MAX4333ESD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4333ESD 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 MAX4333ESD reliable?
The price and inventory of MAX4333ESD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4333ESD is usually 5 days.
3.What payment methods are accepted for MAX4333ESD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4333ESD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4333ESD?
MAX4333ESD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4333ESD 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 MAX4333ESD?
For technical support, including MAX4333ESD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4333ESD requirements.
6.How does Aetrix verify that MAX4333ESD is sourced from the original manufacturer or authorized distributors?
All MAX4333ESD 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 MAX4333ESD meets industry standards.
7.What is the process for return or replacement of MAX4333ESD?
All MAX4333ESD units undergo pre-shipment inspection (PSI). If there is an issue with MAX4333ESD, 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 MAX4333ESD part is unused and in its original packaging.
Return procedure for MAX4333ESD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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