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Analog Devices Inc./Maxim Integrated MAX4329ESD
- Part No.:
- MAX4329ESD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4329ESD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,910
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Product details
Overview
The MAX4329ESD 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 datasheet, MAX4329ESD pinout, MAX4329ESD application, or MAX4329ESD equivalent, key selection criteria include its 14-pin SO package, shutdown capability (MAX4327/MAX4323 only), unity-gain stability with up to 500pF capacitive loads, rail-to-rail I/O swing at 2.4V–6.5V supply, and verified performance across –40°C to +85°C.
Technical Context
The MAX4329ESD implements a bipolar process rail-to-rail input stage using complementary NPN/PNP differential pairs, enabling full VEE-to-VCC common-mode range without phase reversal on overdrive. Its output stage supports rail-to-rail swing into 250Ω loads while maintaining 70dB large-signal voltage gain (RL = 250Ω) and 64° phase margin.
It operates from single supplies (2.4V–6.5V) or dual supplies (±1.2V–±3.25V), features no internal pull-ups on SHDN pins (unlike MAX4323/MAX4327), and exhibits 22nV/√Hz input voltage noise density at 1kHz - confirming suitability for low-noise, wideband sensor interface and RSSI applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5MHz - enables stable closed-loop operation up to ~500kHz at gain ≥10 with minimal phase lag. |
| Supply Current per Amplifier | 650µA (typ @ VCC = 2.4V) - supports ultra-low-power portable instrumentation with four independent channels. |
| Input Offset Voltage | ±700µV (typ @ TA = +25°C) - ensures <1mV error in 12-bit ADC front-ends with 5V full-scale range. |
| Output Voltage Swing | VOL − VEE ≤ 300mV, VCC − VOH ≤ 400mV (RL = 250Ω) - delivers >94% of rail-to-rail dynamic range into moderate loads. |
| Capacitive-Load Stability | Stable with up to 500pF - eliminates need for isolation resistors in DAC buffer or anti-alias filter applications. |
| Common-Mode Rejection Ratio | 59dB (min @ TA = −40°C to +85°C) - maintains accuracy in noisy industrial sensor environments with ground offsets. |
| Slew Rate | 2V/µs - supports clean 100kHz sine-wave reproduction at 2VP-P without distortion. |
Pinout & Package
The MAX4329ESD is housed in a 14-pin SO (Small Outline) package with standard 0.150" body width and 1.27mm lead pitch, compatible with JEDEC MS-012AC. Thermal resistance θJA is 80°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - directly drives 250Ω loads with rail-to-rail swing; no internal shutdown control. |
| 2 | IN1− | Inverting input of Amp 1 - matched impedance critical to minimize bias-current-induced offset errors. |
| 3 | IN1+ | Noninverting input of Amp 1 - accepts signals from VEE to VCC with <250µV typical input offset. |
| 4 | VEE | Negative supply rail - tied to GND in single-supply mode; establishes common reference for all four amplifiers. |
| 5 | VCC | Positive supply rail - accepts 2.4V–6.5V; requires 0.1µF ceramic + 1µF bulk bypassing per supply pin. |
| 6 | IN2+ | Noninverting input of Amp 2 - electrically isolated from other channels; supports independent signal paths. |
| 7 | IN2− | Inverting input of Amp 2 - shares same bias current characteristics as IN1−; polarity reverses near VCC/2. |
| 8 | OUT2 | Amplifier 2 output - identical drive capability and rail-to-rail behavior as OUT1. |
| 9 | OUT3 | Amplifier 3 output - enables simultaneous multi-channel conditioning without cross-talk degradation (135dB isolation). |
| 10 | IN3− | Inverting input of Amp 3 - part of fully independent third op-amp core; no shared internal nodes with Amps 1–2. |
| 11 | IN3+ | Noninverting input of Amp 3 - supports true differential sensing when paired with IN3− and external resistor network. |
| 12 | VEE | Negative supply rail - redundant connection for improved grounding; must be connected to same node as Pin 4. |
| 13 | IN4+ | Noninverting input of Amp 4 - completes quad configuration; allows four independent gain stages on one IC. |
| 14 | IN4− | Inverting input of Amp 4 - final input terminal; layout symmetry recommended to match trace lengths with IN4+. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Input Common-Mode Range | Extends from VEE to VCC - enables direct interfacing with unbuffered sensors and ADC references without level-shifting. |
| Rail-to-Rail Output Voltage Swing | Within 300mV of rails into 250Ω - maximizes dynamic range in 3V systems where headroom is constrained. |
| Unity-Gain Stability with Capacitive Loads | Up to 500pF - eliminates external compensation in DAC output buffers and active filter designs. |
| No Phase Reversal on Overdriven Inputs | Guaranteed behavior - prevents latch-up or erroneous output states during transient overload conditions. |
| Low Input Bias Current | ±50nA (typ @ +25°C) - reduces voltage error across high-impedance source networks (e.g., thermistor dividers). |
Applications
| Battery-Powered Data Acquisition | RSSI Signal Conditioning |
|---|---|
Use Scenario: Portable multichannel sensor logger acquiring temperature, pressure, and humidity with 12-bit SAR ADCs. IC Role / Device Role / Timing Role: Quad op-amp provides simultaneous PGA, anti-alias filtering, and ADC driver functions for four analog inputs. Use Value: 650µA per amplifier enables >100-hour runtime on two AA cells; rail-to-rail I/O preserves full 3V ADC range. | Use Scenario: Cellular baseband receiver measuring received signal strength across multiple frequency bands. IC Role / Device Role / Timing Role: Configured as logarithmic amplifier and peak detector to convert RF envelope to DC voltage proportional to dBm. Use Value: 5MHz GBW and 2V/µs slew rate support accurate RSSI capture up to 1MHz modulation bandwidth. |
| Portable Medical Instrumentation | Low-Voltage PA Bias Control |
Use Scenario: Handheld ECG monitor digitizing biopotential signals with high common-mode rejection. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier front-end with matched input resistors and precise gain setting. Use Value: ±700µV offset and 59dB CMRR ensure sub-mV baseline stability despite electrode contact variations. | Use Scenario: Adaptive bias circuit for Class AB power amplifier in Bluetooth audio transmitters. IC Role / Device Role / Timing Role: Precision current source/sink controlling PA quiescent current based on temperature and supply voltage feedback. Use Value: Rail-to-rail output swing ensures full 0–3.3V control range; low THD (<0.003%) avoids AM distortion in RF output. |
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 supply current (550µA per amp), no guaranteed rail-to-rail input at VCC/2 transition region. | Less suitable for precision low-voltage sensor interfaces requiring full rail-to-rail CMVR. | Select MAX4329ESD when input stage linearity near mid-supply and 5MHz bandwidth at lowest possible current are required. |
| AD8604ARUZ | Higher precision (60µV offset), lower noise (12nV/√Hz), but only 8MHz GBW and 2.7V minimum supply. | Preferred for ultra-low-offset applications like strain gauge bridges, not optimal for 2.4V battery operation. | Choose MAX4329ESD for wider supply range (2.4V–6.5V), better capacitive-load drive, and cost-sensitive quad integration. |
Compared with TLV2464IDR and AD8604ARUZ, the MAX4329ESD uniquely balances 5MHz bandwidth, 650µA quiescent current, full rail-to-rail I/O, and 2.4V operation - making it optimal for space-constrained, multi-channel portable instrumentation where supply headroom and power budget are tightly coupled.
Availability
MAX4329ESD is available at Aetrix Electronics and suitable for battery-powered data acquisition, portable medical instrumentation, RSSI signal conditioning, and low-voltage PA bias control requiring stable component supply across extended temperature ranges.
Supply support for MAX4329ESD 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 high-performance analog and mixed-signal ICs for industrial, automotive, communications, and consumer applications.
The MAX4322–MAX4329 family targets low-power, rail-to-rail signal conditioning in space-constrained, battery-operated systems - emphasizing wide supply range, precision DC specs, and robust AC performance.
FAQ
What is the operating supply voltage range for the MAX4329ESD?
The MAX4329ESD 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 into 3V battery-powered systems and legacy 5V industrial platforms. The device maintains specified performance across the full range, including rail-to-rail input common-mode voltage and output swing.
Does the MAX4329ESD include a shutdown feature?
No, the MAX4329ESD does not include a shutdown function. Unlike the MAX4323 and MAX4327 variants, the MAX4329ESD has no SHDN pin - all four amplifiers remain active whenever powered. Shutdown capability is exclusive to the MAX4323 (single), MAX4327 (dual), and MAX4326 (dual) variants in this family.
What is the maximum capacitive load the MAX4329ESD can drive stably?
The MAX4329ESD is unity-gain stable with capacitive loads up to 500pF without external compensation. This is confirmed in the datasheet's Typical Operating Characteristics (Figure 4) and AC Electrical Characteristics table. For loads exceeding 500pF, an isolation resistor (e.g., 39Ω) in series with the output restores stability, as shown in Figure 6.
How many operational amplifiers are integrated in the MAX4329ESD?
The MAX4329ESD integrates four independent operational amplifiers in a single 14-pin SO package. Each amplifier has dedicated input and output pins (IN1±/OUT1 through IN4±/OUT4), with shared VCC and VEE supply connections. The transistor count is 680, consistent with a quad bipolar op-amp implementation.
What package type is used for the MAX4329ESD?
The MAX4329ESD uses a 14-pin SO (Small Outline) package conforming to JEDEC MS-012AC outline, with 0.150" body width and 1.27mm lead pitch. It is distinct from UCSP, SOT23, or µMAX variants in the same family and is rated for operation from –40°C to +85°C.
MAX4329ESD 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:
- 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 FAQ
1.How can I place an order for MAX4329ESD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4329ESD 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 reliable?
The price and inventory of MAX4329ESD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4329ESD is usually 5 days.
3.What payment methods are accepted for MAX4329ESD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4329ESD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4329ESD?
MAX4329ESD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4329ESD 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?
For technical support, including MAX4329ESD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4329ESD requirements.
6.How does Aetrix verify that MAX4329ESD is sourced from the original manufacturer or authorized distributors?
All MAX4329ESD 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 meets industry standards.
7.What is the process for return or replacement of MAX4329ESD?
All MAX4329ESD units undergo pre-shipment inspection (PSI). If there is an issue with MAX4329ESD, 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 part is unused and in its original packaging.
Return procedure for MAX4329ESD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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