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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:428
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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, designed for precision signal conditioning in single-supply systems. It delivers 3MHz gain-bandwidth, 245µA per amplifier quiescent current, ±0.25mV typical input offset voltage, and operates from +2.3V to +6.5V. It is used in portable data-acquisition front-ends where rail-to-rail swing and low supply current are critical.
For engineers reviewing the MAX4333ESD+ datasheet, MAX4333ESD+ pinout, MAX4333ESD+ application, or MAX4333ESD+ equivalent, key selection criteria include shutdown current (9µA), output swing within 125mV of rails at 2kΩ load, common-mode range extending 250mV beyond supplies, and SO-14 package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The MAX4333ESD+ integrates two independent amplifiers in a single 14-pin SO package, each featuring a composite NPN/PNP rail-to-rail input stage enabling operation down to 250mV below VEE and 250mV above VCC. Its output stage drives 2kΩ loads while maintaining rail-to-rail swing and exhibits no phase reversal under overdrive conditions.
Each amplifier includes a dedicated SHDN pin (pins 1 and 13) that places its output in high-impedance state and reduces supply current to 9µA (typ). The device is unity-gain stable, supports capacitive loads up to 150pF, and achieves 67dB CMRR and 75dB PSRR at VCC = 2.3V across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 3MHz - enables stable unity-gain buffer and closed-loop configurations up to ~300kHz with moderate gain. |
| Quiescent Current per Amp | 245µA (typ) - allows continuous operation in battery-powered devices for months on coin-cell power. |
| Input Offset Voltage | ±0.25mV (typ) - ensures ≤0.5mV total error in 12-bit ADC front-end applications with 5V full-scale range. |
| Rail-to-Rail Output Swing | Within 125mV of VEE/VCC at 2kΩ load - preserves dynamic range in low-voltage (2.3V–6.5V) single-supply systems. |
| Shutdown Supply Current | 9µA per amplifier (typ) - reduces system standby power by >96% versus active mode, critical for duty-cycled sensors. |
| Common-Mode Input Range | VCM = –0.25V to VCC + 0.25V - accepts inputs beyond supply rails, simplifying level-shifting in mixed-voltage interfaces. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive cabin ambient environments without derating. |
Pinout & Package
MAX4333ESD+ is housed in a 14-pin Small Outline (SO) package with standard JEDEC MS-012AC footprint (body width 3.9mm, lead pitch 1.27mm). Pin 1 is marked with a beveled corner or dot; pin numbering follows counterclockwise convention when viewing top side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 | SHDN1, SHDN2 | Active-low shutdown control for Amp1 and Amp2; logic threshold referenced to VEE (0.8V max for low); float or tie to VCC for normal operation. |
| 2, 6 | IN1–, IN2– | Inverting inputs - internally protected by 1kΩ series resistors and back-to-back diode clamps for ±1.8V differential tolerance. |
| 3, 5 | IN1+, IN2+ | Noninverting inputs - same protection as inverting inputs; bias current polarity flips near mid-supply due to NPN/PNP input stage crossover. |
| 4, 11 | VEE | Negative supply / ground reference - substrate tied to VEE; must be bypassed with 0.1µF capacitor to GND for stability. |
| 7, 8, 10, 14 | VCC | Positive supply - shared across both amplifiers; requires local 0.1µF ceramic decoupling to VEE. |
| 9, 12 | OUT1, OUT2 | Amplifier outputs - high-impedance in shutdown; capable of sourcing/sinking ≥20mA short-circuit current; stable into 150pF. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full utilization of 2.3V–6.5V supply range: input accepts signals from –0.25V to VCC+0.25V; output swings to within 125mV of either rail at 2kΩ. |
| Low-power shutdown | Reduces per-amplifier ICC from 245µA to 9µA (typ), cutting total quiescent power by >96% - essential for intermittent-sampling sensor nodes. |
| No phase reversal | Prevents output latch-up or erroneous saturation during input overdrive - eliminates need for external clamping in transducer interfaces. |
| Unity-gain stable | Operates reliably in buffer, follower, and gain-of-one configurations without external compensation - simplifies PCB layout and BOM. |
| Capacitive load drive | Stable with up to 150pF load capacitance - supports direct connection to ADC input caps or long traces without isolation resistor. |
Applications
| Portable ECG Front-End | Industrial 4–20mA Loop Receiver |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in battery-powered wearable monitors. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier driver with rail-to-rail output feeding SAR ADC; shutdown disables unused channel during sleep cycles. Use Value: 245µA per amp and 9µA shutdown current extend coin-cell life to >12 months; rail-to-rail swing maximizes SNR in 3.3V system. |
Use Scenario: Converting 4–20mA loop current to 0–5V analog signal for PLC analog input modules operating in harsh factory environments. IC Role / Device Role / Timing Role: Precision I-to-V converter and level-shifter; one amp configures as transimpedance, second as rail-to-rail output buffer. Use Value: ±0.25mV offset and 67dB CMRR reject common-mode noise on long twisted-pair cables; –40°C to +85°C rating ensures reliability. |
| Low-Voltage Gas Sensor Signal Chain | Smart Home CO Detector Analog Front-End |
Use Scenario: Conditioning output of electrochemical gas sensors (e.g., CO, NO₂) with sub-mV sensitivity and high source impedance. IC Role / Device Role / Timing Role: First-stage transimpedance amplifier with guarded input; second stage provides gain and rail-to-rail buffering before ADC. Use Value: Input bias current <±1nA minimizes offset error from high-Z sensor elements; 3MHz GBW supports fast response to gas concentration changes. |
Use Scenario: Signal conditioning for MEMS-based CO sensors in battery-operated residential detectors requiring UL 2034 compliance. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: one amp for sensor biasing/compensation, second for filtered output amplification with shutdown during standby. Use Value: Shutdown mode draws only 18µA total (9µA × 2), enabling 5-year battery life; rail-to-rail output ensures full ADC code utilization at 2.7V supply. |
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), lower GBW (6.4MHz), SO-8 package (fewer pins, no separate SHDN per amp). | Lacks independent shutdown per channel; unsuitable for asymmetric channel duty cycling; requires higher supply headroom. | Choose TLV2462IDR only if higher speed is required and rail-to-rail input is not needed; verify CMVR compatibility with sensor output range. |
| AD8602ARZ | No shutdown function; lower offset (±60µV typ); higher quiescent current (820µA/amp); SO-8 package; rail-to-rail I/O but narrower CMVR (VEE to VCC – 0.1V). | Cannot reduce power during idle periods; higher ICC limits battery life; lacks per-amplifier enable control. | Select AD8602ARZ for ultra-low-offset precision applications where continuous operation is mandatory and power budget permits. |
Compared with TLV2462IDR and AD8602ARZ, MAX4333ESD+ uniquely combines dual independent shutdown, true rail-to-rail input (beyond rails), and ultra-low 245µA/amp ICC in a 14-pin SO - making it optimal for duty-cycled, low-voltage, space-constrained industrial and portable designs.
Availability
MAX4333ESD+ is available at Aetrix Electronics and suitable for portable medical devices, industrial loop receivers, gas sensor signal chains, and smart home safety detectors requiring stable component supply across extended product 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX4330–MAX4334 family was designed specifically for low-voltage, single-supply precision signal conditioning - targeting battery-powered instrumentation, portable diagnostics, and energy-efficient industrial sensing where rail-to-rail operation and micropower shutdown are mandatory.
FAQ
What is the maximum capacitive load the MAX4333ESD+ can drive stably?
The MAX4333ESD+ remains stable with capacitive loads up to 150pF without external compensation. This is verified in the Capacitive Load Stability graph (Figure TOC21) and confirmed across all operating conditions (VCC = 2.3V to 6.5V, –40°C to +85°C). For loads exceeding 150pF, a series isolation resistor (e.g., 39Ω) between output and capacitor restores stability, as shown in Figure 5 of the datasheet.
Does the MAX4333ESD+ support dual-supply operation?
Yes, the MAX4333ESD+ supports dual-supply operation from ±1.15V to ±3.25V. The absolute maximum supply voltage is 7V (VCC – VEE), and the input common-mode range extends 250mV beyond both rails. When using dual supplies, the SHDN pin logic thresholds remain referenced to VEE, so pulling SHDN to VEE places the amplifier in shutdown mode.
What is the typical output voltage swing of the MAX4333ESD+ at 2.3V supply?
At VCC = 2.3V and RL = 2kΩ to VCC/2, the MAX4333ESD+ output typically swings from within 125mV of VEE to within 125mV of VCC. Per DC Electrical Characteristics Table (page 4), VOUT min = 0.35V and VOUT max = 1.95V - confirming a usable swing of 1.6V (70% of 2.3V rail) under worst-case load and temperature (–40°C to +85°C).
How does the shutdown feature affect output impedance in the MAX4333ESD+?
In shutdown mode, the MAX4333ESD+ output enters a true high-impedance state - not just tri-stated, but actively disabled with leakage current limited to ±5µA (max) per output. This is specified as IOUT(SHDN) in the DC Electrical Characteristics table (page 4). The high-Z state prevents loading of downstream circuitry and avoids unintended signal coupling during sleep cycles.
Is the MAX4333ESD+ pin-compatible with other devices in the MAX4330–MAX4334 family?
No - the MAX4333ESD+ (14-pin SO) is not pin-compatible with MAX4330 (5-pin SOT23), MAX4331 (8-pin µMAX/SO), or MAX4332 (8-pin SO). While functional equivalents exist, pinouts differ significantly: MAX4333ESD+ has dedicated SHDN1/SHDN2 (pins 1/13), dual VCC connections (pins 7/8/10/14), and separate VEE (pin 4/11), unlike the smaller packages. Always consult the Pin Configurations section (pages 14–15) for layout verification.
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:
- Active
- 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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