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Analog Devices Inc./Maxim Integrated MAX4329ESD-T
- Part No.:
- MAX4329ESD-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4329ESD-T.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,088
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Product details
Overview
MAX4329ESD-T from Maxim Integrated is a quad, 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 drives 250Ω loads - enabling high-fidelity analog front-ends in battery-powered data-acquisition systems.
For engineers reviewing the MAX4329ESD-T datasheet, MAX4329ESD-T pinout, MAX4329ESD-T application, or MAX4329ESD-T equivalent, key selection criteria include its 14-pin SO package, shutdown capability (SHDN pins), rail-to-rail I/O swing down to 120mV from rails at 250Ω load, unity-gain stability with ≤500pF capacitive loads, and operation across 2.4V–6.5V single supply.
Technical Context
The MAX4329ESD-T implements a dual NPN/PNP rail-to-rail input stage that extends common-mode range to both supply rails, with seamless switchover near VCC/2 to minimize CMRR degradation. Its output stage uses complementary emitter-follower topology to achieve millivolt-level output swing under load.
It features independent shutdown control for each of its four amplifiers via dedicated SHDN1–SHDN4 pins, reducing supply current to ≤60µA per amplifier when disabled while placing outputs in high-impedance state - critical for power-gated multi-channel sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5MHz - supports stable closed-loop gain up to 100× at 50kHz or unity gain at 5MHz for anti-aliasing filter drivers. |
| Supply Voltage Range | 2.4V to 6.5V single supply - enables direct interface with Li-ion (3.0–4.2V), 3.3V, and 5V logic domains without level-shifting. |
| Quiescent Current | 650µA per amplifier (typ at 5V) - allows four-channel operation at <2.7mA total, extending battery life in portable instrumentation. |
| Input Offset Voltage | ±700µV (typ), ±3.0mV (max at -40°C to +85°C) - ensures <1.5mV error in 12-bit ADC front-ends with 2.5V reference. |
| Output Swing (250Ω) | VOL–VEE ≤ 300mV, VCC–VOH ≤ 400mV (max) - delivers >90% of full-scale swing into standard resistive loads. |
| Capacitive Load Stability | Stable with ≤500pF - eliminates need for isolation resistors in driving ADC input caps or long PCB traces. |
| Shutdown Current | ≤60µA per amplifier (max at +85°C) - reduces idle power by >97% versus active mode for duty-cycled channel activation. |
Pinout & Package
MAX4329ESD-T is housed in a 14-pin SO (Small Outline) package with 150-mil body width, RoHS-compliant lead finish, and standard JEDEC MS-012AC outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8, 10 | OUT1–OUT4 | Amplifier outputs - each capable of sourcing/sinking ≥20mA into 250Ω load with rail-to-rail swing. |
| 2, 6, 9, 13 | IN1–, IN2–, IN3–, IN4– | Inverting inputs - high-impedance (≥500kΩ) differential nodes with internal 1kΩ series protection resistors. |
| 3, 5, 9, 13 | IN1+, IN2+, IN3+, IN4+ | Noninverting inputs - rail-to-rail common-mode range (VEE to VCC) enables direct sensor interfacing without bias networks. |
| 4, 11 | VEE | Negative supply / ground reference - tied to system GND in single-supply configurations; supports dual ±1.2V to ±3.25V operation. |
| 7, 14 | VCC | Positive supply - bypassing with 0.1µF ceramic + 1µF bulk capacitor required for stability at full bandwidth. |
| 1, 7, 9, 13 | SHDN1–SHDN4 | Independent shutdown controls - pulled high or left floating to enable; driven low to disable corresponding amplifier and place output in Hi-Z. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Input/Output | Enables full dynamic range utilization in 2.4V–6.5V single-supply systems - no external level-shifting or biasing needed for sensors or ADCs. |
| Independent Per-Amplifier Shutdown | Reduces system power by selectively disabling unused channels - essential for time-multiplexed multi-sensor acquisition with microsecond wake-up latency. |
| No Phase Reversal on Overdrive | Prevents latch-up or erroneous output states when inputs exceed common-mode range - improves robustness in noisy industrial environments. |
| Unity-Gain Stable with 500pF Load | Eliminates external compensation components when driving ADC sample-hold capacitors or long cables - simplifies layout and reduces BOM count. |
| Low Input Bias Current (±180nA max) | Minimizes offset error in high-impedance transducer interfaces (e.g., pH electrodes, piezoresistive bridges) without requiring matched source impedances. |
Applications
| Battery-Powered Data Acquisition | RSSI Signal Conditioning |
|---|---|
Use Scenario: Portable multichannel sensor logger acquiring thermocouple, RTD, and strain gauge signals on a single 3.3V Li-ion supply. IC Role / Device Role / Timing Role: Quad op-amp provides simultaneous PGA, filtering, and level-shifting for four analog channels before multiplexing into a 12-bit SAR ADC. Use Value: Rail-to-rail I/O preserves >95% of ADC input range; 650µA/channel quiescent current enables >100-hour runtime on 2000mAh battery. | Use Scenario: Cellular baseband receiver measuring received signal strength indicator (RSSI) across multiple frequency bands using diode-detector outputs. IC Role / Device Role / Timing Role: Configured as precision logarithmic amplifier and buffer to linearize and scale detector voltage proportional to RF power. Use Value: ±700µV offset ensures <0.5dB RSSI measurement error; 5MHz GBW supports fast AGC loop response in LTE/WCDMA handover scenarios. |
| PA Bias Control Interface | Low-Voltage Portable Instrumentation |
Use Scenario: Closed-loop bias control for GaAs pHEMT power amplifiers in handheld radios, where temperature-compensated DC bias must track PA gain drift. IC Role / Device Role / Timing Role: Acts as precision current sink/source driver converting DAC output to stable, low-noise bias voltage for PA gate control. Use Value: 22nV/√Hz input noise prevents corruption of µA-level bias currents; shutdown mode disables unused PA channels during sleep mode. | Use Scenario: Handheld medical device (e.g., pulse oximeter) performing synchronous LED drive and photodiode signal recovery in tight space-constrained PCB. IC Role / Device Role / Timing Role: One amplifier drives LED current source; two condition photodiode transimpedance output; fourth buffers reference for ADC. Use Value: 14-pin SO package consolidates four functions in footprint smaller than discrete solutions; rail-to-rail output drives ADC directly from 3.0V supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Lower GBW (6.4MHz), higher quiescent current (600µA per amp), no independent shutdown - single SHDN pin for all amps. | Not suitable for per-channel power gating; requires external level-shifting for sub-2.7V operation due to limited input CMVR. | Select when unified shutdown suffices and higher speed is prioritized over ultra-low power. |
| AD8604ARUZ | Higher precision (±60µV VOS), lower noise (12nV/√Hz), but no shutdown function and higher supply current (1mA per amp). | Preferred for high-resolution metrology where offset and noise dominate; unsuitable for battery-critical or power-gated designs. | Select when DC accuracy and noise performance outweigh power and flexibility requirements. |
Compared with TLV2464IDR and AD8604ARUZ, MAX4329ESD-T uniquely balances low quiescent current, independent per-amplifier shutdown, and rail-to-rail operation down to 2.4V - making it optimal for multi-channel, battery-sensitive signal chains requiring dynamic power management.
Availability
MAX4329ESD-T is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical devices, and multi-channel sensor interfaces requiring stable component supply across extended temperature ranges (-40°C to +85°C).
Supply support for MAX4329ESD-T 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, automotive, and communications applications.
The MAX432x family was engineered specifically for low-voltage, rail-to-rail signal conditioning in portable and multi-channel data-acquisition systems - emphasizing power efficiency, small packaging, and robust input/output performance.
FAQ
What is the operating supply voltage range for MAX4329ESD-T?
The MAX4329ESD-T operates from a single supply of 2.4V to 6.5V or dual supplies of ±1.2V to ±3.25V. This wide range supports direct integration with common battery chemistries (Li-ion, Li-poly) and standard logic rails (3.3V, 5V). Operation below 2.4V is not guaranteed, and exceeding 6.5V risks permanent damage per absolute maximum ratings.
Does MAX4329ESD-T support independent shutdown for each amplifier?
Yes, MAX4329ESD-T provides four dedicated shutdown pins (SHDN1–SHDN4, pins 1, 7, 9, 13) enabling per-amplifier control. Driving any SHDN pin low disables only its corresponding amplifier, reducing its supply current to ≤60µA and placing its output in high-impedance state - critical for time-multiplexed multi-sensor systems.
What is the maximum capacitive load MAX4329ESD-T can drive stably?
MAX4329ESD-T is unity-gain stable with capacitive loads up to 500pF without external compensation. This is verified in the datasheet's Typical Operating Characteristics (Figure 4) and enables direct driving of ADC input capacitors, long PCB traces, or cable capacitance without added isolation resistors or feedback network adjustments.
How does the rail-to-rail input stage of MAX4329ESD-T work?
MAX4329ESD-T uses a composite NPN/PNP differential pair input stage. The PNP section handles inputs near VEE; the NPN section handles inputs near VCC. Their seamless transition near VCC/2 maintains rail-to-rail common-mode range (VEE to VCC) while minimizing CMRR degradation - confirmed by 59dB min CMRR across temperature.
What package type is used for MAX4329ESD-T?
MAX4329ESD-T is supplied in a 14-pin SO (Small Outline) package with 150-mil body width, compliant with JEDEC MS-012AC standard. Pin pitch is 1.27mm, body dimensions are 8.65mm × 3.91mm × 1.75mm, and it features gull-wing leads suitable for reflow soldering.
MAX4329ESD-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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 (x4 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:
- 14-SOIC
MAX4329ESD-T FAQ
1.How can I place an order for MAX4329ESD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4329ESD-T 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 MAX4329ESD-T reliable?
The price and inventory of MAX4329ESD-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4329ESD-T is usually 5 days.
3.What payment methods are accepted for MAX4329ESD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4329ESD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4329ESD-T?
MAX4329ESD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4329ESD-T 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 MAX4329ESD-T?
For technical support, including MAX4329ESD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4329ESD-T requirements.
6.How does Aetrix verify that MAX4329ESD-T is sourced from the original manufacturer or authorized distributors?
All MAX4329ESD-T 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 MAX4329ESD-T meets industry standards.
7.What is the process for return or replacement of MAX4329ESD-T?
All MAX4329ESD-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4329ESD-T, 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 MAX4329ESD-T part is unused and in its original packaging.
Return procedure for MAX4329ESD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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