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Analog Devices Inc./Maxim Integrated MAX4488AUA+T
- Part No.:
- MAX4488AUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4488AUA+T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,674
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Product details
Overview
MAX4488AUA+T from Maxim Integrated is a single, decompensated, rail-to-rail output operational amplifier optimized for low-noise, low-distortion signal conditioning in precision analog systems. It delivers 42MHz gain-bandwidth product at AV ≥ +5V/V, 10V/µs slew rate, 0.0005% THD+N (1kHz, RL = 1kΩ), 4.5nV/√Hz input voltage-noise density, and operates from +2.7V to +5.5V single supply - ideal for high-fidelity DAC output amplification and sensor front-ends.
For engineers reviewing the MAX4488AUA+T datasheet, MAX4488AUA+T pinout, MAX4488AUA+T application, or MAX4488AUA+T equivalent, this page provides verified circuit role (precision gain-stage op amp), package mapping (8-pin µMAX), shutdown functionality (SHDN pin), thermal performance (θJA = 206°C/W multi-layer), and design-critical AC/DC specs including phase margin (80°) and capacitive-load stability (200pF).
Technical Context
The MAX4488AUA+T is internally compensated for stable operation only at closed-loop gains of +5V/V or greater, distinguishing it from unity-gain-stable variants like the MAX4475. Its BiCMOS process enables ultra-low input bias current (±1pA typ) and high open-loop gain (120dB), supporting DC-accurate filtering and high-impedance source buffering without significant offset drift.
It features a dedicated SHDN pin that reduces quiescent current to 0.01µA and forces output into high-impedance state, enabling power-gating in battery-sensitive instrumentation. Input common-mode range extends to 0.1V below VSS and up to VDD – 1.7V, while rail-to-rail output swings within 80mV of supplies into 1kΩ load - critical for low-voltage, wide-dynamic-range applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 42MHz at AV ≥ +5V/V - enables stable high-speed amplification with minimal phase lag in gain ≥5 configurations. |
| Slew Rate | 10V/µs - supports clean 1.25MHz full-power bandwidth for 2VP-P signals, minimizing distortion in fast transient response. |
| THD+N | 0.0005% at 1kHz, RL = 1kΩ - ensures <16-bit signal integrity in precision DAC buffers and audio-grade preamps. |
| Input Voltage-Noise Density | 4.5nV/√Hz at 1kHz - preserves SNR in low-level sensor interfaces (e.g., strain gauges, piezoelectric transducers). |
| Supply Voltage Range | +2.7V to +5.5V single supply - compatible with Li-ion, 3.3V, and 5V embedded systems without dual-rail generation. |
| Shutdown Current | 0.01µA - reduces system standby power by >99.9% versus active mode (2.5mA), essential for portable medical devices. |
| Input Bias Current | ±1pA typical - eliminates significant offset error when driving high-Z sources like pH electrodes or photodiode transimpedance nodes. |
Pinout & Package
The MAX4488AUA+T is housed in an 8-pin µMAX® package (package code U8+4), featuring exposed pad (EP) connected to VSS for enhanced thermal dissipation (θJA = 206°C/W on multi-layer board). Pin 1 is top-marked with orientation notch; EP must be soldered to ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Rail-to-rail output capable of sourcing/sinking ±5mA; swings within 80mV of VDD/VSS into 1kΩ load. |
| 2 | IN− | Inverting input - high-impedance node (1000GΩ differential resistance); requires feed-forward compensation if RG||RF > 5kΩ. |
| 3 | IN+ | Noninverting input - common-mode range includes ground; no phase reversal under overdrive. |
| 4 | VSS | Negative supply terminal - connect directly to system ground; EP must be tied to same potential. |
| 5 | SHDN | Active-low shutdown control - logic-low (<0.3×VDD) disables amplifier and places OUT in high-Z state. |
| 6 | VDD | Positive supply input - bypass with 0.1µF ceramic capacitor placed adjacent to pin for noise suppression. |
| 7 | N.C. | No internal connection - leave unconnected; not electrically tied to die or substrate. |
| 8 | EP | Exposed thermal paddle - must be soldered to VSS copper pour to achieve rated θJA and prevent thermal derating. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Drives loads down to 1kΩ while maintaining DC accuracy and settling within 2µs to 0.01% for 2V step - enables direct interfacing with ADC reference inputs and low-voltage logic. |
| Low-power shutdown mode | Reduces supply current to 0.01µA and isolates output without external FET - simplifies power sequencing in multi-channel sensor arrays. |
| High gain-bandwidth at AV ≥ +5 | 42MHz GBWP ensures stable closed-loop response with minimal peaking in gain-of-5–100 configurations used in anti-aliasing filters and programmable gain stages. |
| Ultra-low input current noise | 0.5fA/√Hz allows use with >100MΩ source impedances (e.g., electret microphones, piezoresistive sensors) without degrading system noise floor. |
| Capacitive-load stability | Stable with up to 200pF load capacitance - eliminates need for isolation resistors when driving long traces or ADC input capacitance (typically 10–30pF). |
Applications
| ADC Buffers | DAC Output Amplifiers |
|---|---|
Use Scenario: Driving the input of a 16-bit SAR ADC (e.g., MAX11100) with variable full-scale range. IC Role / Device Role / Timing Role: Precision unity-gain or gain-of-2 buffer isolating DAC output impedance from ADC sampling switch. Use Value: 0.0002% THD+N and 4.5nV/√Hz noise preserve effective number of bits (ENOB > 15.5) across 100kHz bandwidth. | Use Scenario: Amplifying the unbuffered voltage output of a 16-bit DAC (e.g., MAX5541) to ±2.5V rails. IC Role / Device Role / Timing Role: Low-bias-current output stage ensuring <1LSB error from DAC's 150pA max IB. Use Value: ±1pA typical input bias current prevents DC offset accumulation in high-resolution DAC feedback paths. |
| Low-Noise Microphone/Preamplifiers | Strain Gauges/Sensor Amplifiers |
Use Scenario: First-stage amplification of electret microphone output before analog compression or ADC digitization. IC Role / Device Role / Timing Role: High-input-impedance, low-noise transimpedance or voltage gain stage. Use Value: 0.5fA/√Hz current noise dominates over voltage noise at >100MΩ source impedance, maximizing SNR. | Use Scenario: Instrumentation amplifier front-end for quarter-bridge strain gauge with 350Ω elements. IC Role / Device Role / Timing Role: Precision gain-of-1000 stage with matched input bias current minimizing common-mode error. Use Value: 70µV max input offset and ±0.3µV/°C tempco ensure <0.05% FS error over –40°C to +125°C industrial range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA1611AIDR | 3.8MHz GBW, unity-gain stable, lower noise (1.1nV/√Hz), no shutdown pin | Better for ultra-low-noise audio preamps; unsuitable where gain ≥5 and shutdown are required | Select OPA1611AIDR only when GBW <10MHz suffices and shutdown is unnecessary |
| ADA4898-1ARZ | 65MHz GBW, unity-gain stable, higher supply current (10mA), no shutdown | Superior speed for video or wideband active filters; incompatible with low-power shutdown architectures | Choose ADA4898-1ARZ when unity-gain stability and >42MHz bandwidth are mandatory |
Compared with OPA1611AIDR and ADA4898-1ARZ, the MAX4488AUA+T uniquely combines 42MHz GBW at AV ≥ +5, integrated shutdown, and sub-5nV/√Hz noise - making it optimal for space-constrained, battery-aware precision gain stages where gain configuration and power gating are design requirements.
Availability
MAX4488AUA+T is available at Aetrix Electronics and suitable for medical instrumentation, industrial sensor signal chains, and portable test equipment requiring stable component supply, extended temperature operation (–40°C to +125°C), and RoHS-compliant packaging.
Supply support for MAX4488AUA+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 high-performance analog and mixed-signal ICs for precision, power, and interface applications.
The MAX4475–MAX4489 family targets low-noise, low-distortion signal conditioning in space-constrained, single-supply systems - specifically engineered for ADC/DAC buffering, sensor front-ends, and medical instrumentation where rail-to-rail operation and shutdown capability are critical.
FAQ
What is the minimum stable gain for the MAX4488AUA+T?
The MAX4488AUA+T is internally compensated for stable operation only at closed-loop gains of +5V/V or greater. Attempting unity-gain or gain-of-2 configurations risks oscillation due to insufficient phase margin. For lower-gain applications, the MAX4475AUA+T (10MHz, unity-gain stable) is the recommended alternative within the same family. Always verify stability with capacitive load and PCB layout per the datasheet's compensation guidelines.
Does the MAX4488AUA+T support true rail-to-rail input common-mode range?
The MAX4488AUA+T supports rail-to-rail *output* swing but has a limited input common-mode range: from (VSS – 0.1V) to (VDD – 1.7V) over temperature. It does *not* accept inputs at the positive rail. However, its input range includes ground - making it suitable for single-supply systems with bipolar input signals referenced to VSS. This differs from true rail-to-rail input op amps like the MAX4470.
How is the SHDN pin used on the MAX4488AUA+T?
The SHDN pin (Pin 5) is an active-low digital control input. Pulling SHDN ≤ 0.3×VDD places the MAX4488AUA+T in shutdown mode: supply current drops to 0.01µA and the output enters high-impedance state. During normal operation, tie SHDN to VDD. The enable delay time from shutdown is 10µs (to 0.1% of final value), and shutdown entry delay is 1.5µs - enabling fast power cycling in multi-channel data acquisition systems.
What thermal considerations apply to the MAX4488AUA+T in µMAX package?
The MAX4488AUA+T in 8-pin µMAX (U8+4) has θJA = 206°C/W on multi-layer board and 221°C/W on single-layer board. To maintain junction temperature ≤125°C at TA = 85°C, maximum power dissipation must stay below 362mW (derated above +70°C at 4.5mW/°C). Successful thermal design requires soldering the exposed paddle (Pin 8/EP) to a VSS copper pour - failure to do so increases θJA significantly and risks thermal shutdown or parametric drift.
Can the MAX4488AUA+T drive 200pF capacitive loads without external compensation?
Yes - the MAX4488AUA+T is specified for capacitive-load stability up to 200pF without external series resistance or compensation networks. This is validated across all operating conditions (–40°C to +125°C, VDD = 2.7V–5.5V). However, for loads >100pF, ensure PCB layout minimizes parasitic inductance and use local 0.1µF VDD bypassing. If overshoot or ringing occurs, add a small (1–10Ω) series resistor at the output - but this is rarely needed per characterization data.
MAX4488AUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 42 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 70 µV
- Current - Supply:
- 2.5mA
- Current - Output / Channel:
- 48 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4488AUA+T FAQ
1.How can I place an order for MAX4488AUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4488AUA+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 MAX4488AUA+T reliable?
The price and inventory of MAX4488AUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4488AUA+T is usually 5 days.
3.What payment methods are accepted for MAX4488AUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4488AUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4488AUA+T?
MAX4488AUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4488AUA+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 MAX4488AUA+T?
For technical support, including MAX4488AUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4488AUA+T requirements.
6.How does Aetrix verify that MAX4488AUA+T is sourced from the original manufacturer or authorized distributors?
All MAX4488AUA+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 MAX4488AUA+T meets industry standards.
7.What is the process for return or replacement of MAX4488AUA+T?
All MAX4488AUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4488AUA+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 MAX4488AUA+T part is unused and in its original packaging.
Return procedure for MAX4488AUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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