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Analog Devices Inc./Maxim Integrated MAX9632ASA+T
- Part No.:
- MAX9632ASA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9632ASA+T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,665
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Product details
Overview
MAX9632ASA+T from Maxim Integrated is a precision, low-noise, wide-band operational amplifier optimized for high-resolution ADC driver applications. It delivers 55MHz gain-bandwidth, 0.94nV/√Hz input voltage noise, 600ns settling time to 16-bit accuracy, and rail-to-rail output swing - enabling high-fidelity signal conditioning in ±15V or +5V to +36V systems driving 24-bit Σ∆ ADCs.
For engineers reviewing the MAX9632ASA+T datasheet, MAX9632ASA+T pinout, MAX9632ASA+T application, or MAX9632ASA+T equivalent, key selection criteria include ultra-low noise performance at 1kHz, THD of –128dB at 10kHz, input offset voltage ≤125µV, shutdown control interface compatibility, and SO-8 package thermal behavior under continuous 3.9mA quiescent current.
Technical Context
The MAX9632ASA+T employs a proprietary 36V complementary BiCMOS process to achieve unity-gain stability with 30V/µs slew rate and 55MHz GBW while maintaining sub-1nV/√Hz noise. Its input stage features ESD-hardened back-to-back diodes and supports common-mode input range from VEE + 1.8V to VCC – 1.4V.
Output stage delivers rail-to-rail swing within 50mV of either supply rail under 10kΩ load and remains stable driving up to 100pF capacitive loads. Shutdown control is active-high referenced to VCC, with disable threshold ≥ VCC – 0.35V and enable threshold ≤ VCC – 3.0V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +4.5V to +36V single-supply or ±2.25V to ±18V dual-supply - enables direct integration into industrial sensor front-ends and high-voltage data acquisition without level-shifting. |
| Gain-Bandwidth Product | 55MHz - ensures accurate amplification of fast transients and multi-kHz sinusoidal signals in precision test equipment. |
| Input Voltage Noise Density | 0.94nV/√Hz at 1kHz - preserves SNR when conditioning microvolt-level biomedical or instrumentation signals. |
| Settling Time (to 16-bit) | 600ns - meets timing budgets for 1.6Msps SAR ADCs like MAX11905 without cycle loss. |
| Total Harmonic Distortion | –128dB at 10kHz - minimizes spectral contamination in audio-grade and medical imaging signal chains. |
| Input Offset Voltage (max) | 125µV - reduces DC error accumulation in closed-loop integrators and precision gain stages. |
| Quiescent Current | 3.9mA typical - balances low-noise performance with power efficiency in always-on measurement modules. |
Pinout & Package
MAX9632ASA+T is housed in an 8-pin SO (Small Outline) package with exposed pad not present (non-EP variant). Pin 1 is located at the top-left corner adjacent to the index mark. The device uses standard SO-8 land pattern 90-0096 per Maxim's package documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | N.C. | No internal connection - must remain unconnected; no routing or grounding permitted. |
| 2 | IN− | Inverting input - accepts differential feedback network; protected by internal back-to-back diodes against ±0.7V differential overvoltage. |
| 3 | IN+ | Noninverting input - high-impedance node (180nA max bias current); requires matched trace impedance for balanced noise rejection. |
| 4 | VEE | Negative supply rail - must be bypassed with 0.1µF ceramic capacitor directly to ground; shared return path affects PSRR above 100kHz. |
| 6 | OUT | Amplifier output - drives capacitive loads ≤100pF directly; >100pF requires series isolation resistor to maintain phase margin. |
| 7 | VCC | Positive supply rail - bypassed with 0.1µF ceramic capacitor; supplies internal bias generators and output stage. |
| 8 | SHDN | Active-high shutdown control - referenced to VCC; transitions between enabled (≤ VCC – 3.0V) and disabled (≥ VCC – 0.35V). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Within 50mV of VCC or VEE under 10kΩ load - maximizes dynamic range for 24-bit Σ∆ ADCs operating at low supply voltages. |
| Ultra-low THD | –128dB at 10kHz - prevents harmonic folding into baseband during undersampling in ATE systems. |
| Input offset drift | 0.5µV/°C max - limits temperature-induced gain error in uncalibrated medical thermistor interfaces. |
| ESD robustness | ±8kV HBM / ±1kV CDM - eliminates need for external transient suppressors in factory-floor test fixtures. |
| Unity-gain stability | Guaranteed with AV ≥ 1V/V - simplifies design of noninverting buffers without external compensation components. |
Applications
| High-Resolution ADC Drivers | Medical Imaging Signal Chains |
|---|---|
Use Scenario: Driving the fully differential input of the MAX11905 20-bit, 1.6Msps SAR ADC in portable ultrasound front-ends. IC Role / Device Role / Timing Role: Precision buffer and gain stage ensuring <1LSB error across full input range with minimal settling latency. Use Value: 600ns settling time and 0.94nV/√Hz noise preserve SNR >98dB and SFDR >125dB at 10kHz input frequency. |
Use Scenario: Conditioning analog outputs from CT/MRI detector arrays prior to digitization. IC Role / Device Role / Timing Role: Low-distortion, wide-dynamic-range amplifier interfacing photodiode current-to-voltage converters. Use Value: –128dB THD at 10kHz prevents harmonic artifacts from masking subtle tissue contrast gradients. |
| Test and Measurement Systems | Industrial Process Monitoring |
Use Scenario: Front-end amplifier in automated test equipment measuring µV-level sensor outputs across –40°C to +125°C ambient. IC Role / Device Role / Timing Role: Precision DC-coupled gain block with compensated common-mode rejection for floating sensor bridges. Use Value: 110dB min CMRR over full temperature range and 125µV max VOS ensure <0.01% linearity error without calibration. |
Use Scenario: Isolated signal conditioning stage in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: High-voltage-tolerant amplifier accepting ±10V field signals while rejecting 50/60Hz mains interference. Use Value: 120dB min PSRR and 4.5V–36V supply flexibility eliminate need for separate low-voltage LDO rails in modular I/O designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision wide-band amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8397ARZ | Higher 100MHz GBW but 1.8nV/√Hz noise; 12mA IQ; SO-8 package. | Better for higher-frequency (>20MHz) closed-loop gain stages where noise is secondary to bandwidth. | Choose AD8397ARZ only if system requires >55MHz closed-loop bandwidth and can tolerate 2× higher noise floor. |
| OPA1612AIDR | Lower 1.1nV/√Hz noise but 30MHz GBW; 2.6mA IQ; dual SO-8; no shutdown pin. | Preferred for audio-grade applications below 100kHz where ultra-low distortion dominates over speed. | Choose OPA1612AIDR when THD < –130dB at 1kHz is mandatory and 600ns settling is not required. |
Compared with MAX9632ASA+T, AD8397ARZ trades 0.86nV/√Hz lower noise for doubled quiescent current and lacks integrated shutdown, while OPA1612AIDR sacrifices 25MHz GBW to achieve marginally better THD at low frequencies - making MAX9632ASA+T optimal for 16–24-bit ADC drivers needing balanced noise, speed, and power.
Availability
MAX9632ASA+T is available at Aetrix Electronics and suitable for high-resolution ADC drivers, medical imaging signal chains, test and measurement systems, and industrial process monitoring requiring stable component supply across extended temperature ranges.
Supply support for MAX9632ASA+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 in industrial, medical, and communications systems.
The MAX9632ASA+T belongs to Maxim's precision op-amp product line engineered specifically for high-speed, low-noise signal acquisition in demanding data converter interfaces and sensor front-ends.
FAQ
What is the maximum capacitive load the MAX9632ASA+T can drive without external compensation?
The MAX9632ASA+T remains stable driving up to 100pF capacitive load with unity-gain configuration and no external components. For loads exceeding 100pF, a series isolation resistor (typically 10Ω–100Ω) between the MAX9632ASA+T output and the load capacitance restores phase margin. This behavior is verified in the Typical Operating Characteristics figure MAX9632 toc18.
Does the MAX9632ASA+T support true single-supply operation down to 4.5V?
Yes, the MAX9632ASA+T operates from +4.5V to +36V single supply with full specification compliance including rail-to-rail output swing, 55MHz GBW, and 0.94nV/√Hz noise. Input common-mode range extends from VEE + 1.8V, so with 4.5V supply (VEE = 0V), usable input range is 1.8V to 3.1V - sufficient for many buffered sensor interfaces.
How does the shutdown function behave when using dual ±15V supplies with the MAX9632ASA+T?
With ±15V supplies, VCC = +15V and VEE = –15V. The MAX9632ASA+T shutdown pin is referenced to VCC: device enables when SHDN ≤ +12V (VCC – 3.0V) and disables when SHDN ≥ +14.65V (VCC – 0.35V). A TTL/CMOS logic high (≥ +14.65V) forces high-impedance output; a grounded or ≤ +12V signal enables normal operation.
Is the SO-8 package of the MAX9632ASA+T RoHS-compliant?
Yes, the "+" suffix in MAX9632ASA+T denotes lead(Pb)-free and RoHS-compliant construction per EU Directive 2011/65/EU. The package uses matte tin finish on leads and complies with JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3) handling requirements.
What is the thermal resistance (θJA) of the MAX9632ASA+T in its SO-8 package?
The junction-to-ambient thermal resistance (θJA) for the MAX9632ASA+T in 8-pin SO package is 136°C/W under JEDEC JESD51-7 4-layer board conditions. Derating is 7.4mW/°C above +70°C ambient, supporting continuous operation up to +125°C case temperature with appropriate PCB copper area.
MAX9632ASA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 30V/µs
- Gain Bandwidth Product:
- 55 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 nA
- Voltage - Input Offset:
- 30 µV
- Current - Supply:
- 3.9mA
- Current - Output / Channel:
- 56 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX9632ASA+T FAQ
1.How can I place an order for MAX9632ASA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9632ASA+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 MAX9632ASA+T reliable?
The price and inventory of MAX9632ASA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9632ASA+T is usually 5 days.
3.What payment methods are accepted for MAX9632ASA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9632ASA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9632ASA+T?
MAX9632ASA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9632ASA+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 MAX9632ASA+T?
For technical support, including MAX9632ASA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9632ASA+T requirements.
6.How does Aetrix verify that MAX9632ASA+T is sourced from the original manufacturer or authorized distributors?
All MAX9632ASA+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 MAX9632ASA+T meets industry standards.
7.What is the process for return or replacement of MAX9632ASA+T?
All MAX9632ASA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9632ASA+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 MAX9632ASA+T part is unused and in its original packaging.
Return procedure for MAX9632ASA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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