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Texas Instruments SA5534AD
- Part No.:
- SA5534AD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SA5534AD.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:206
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Product details
Overview
SA5534AD from Texas Instruments is a precision low-noise operational amplifier designed for high-fidelity analog signal conditioning in demanding industrial and audio systems. It delivers 3.5 nV/√Hz input noise voltage, 10 MHz unity-gain bandwidth, 100 dB common-mode rejection ratio, ±13 V output swing (at ±18 V supply), and operates across –40°C to +85°C. It serves as a DC-coupled gain stage in microphone preamplifiers and sensor signal chains where wide dynamic range and thermal stability are critical.
For engineers reviewing the SA5534AD datasheet, SA5534AD pinout, SA5534AD application, or SA5534AD equivalent, this page provides verified specifications, SOIC-8 package mapping, offset-nulling and external compensation circuitry guidance, and validated alternatives for industrial temperature-range op-amp replacement in audio, medical, and instrumentation designs.
Technical Context
The SA5534AD is internally compensated for stable operation at closed-loop gains ≥3, with optional external frequency compensation via a capacitor between COMP and COMP/BAL pins to optimize bandwidth and phase margin for specific load conditions. Its bipolar input stage enables low input bias current (20–300 nA) and high DC voltage gain (25–100 V/mV), supporting precision DC amplification without significant drift.
It features dedicated BALANCE and COMP/BAL terminals for offset voltage nulling and dual-purpose compensation, alongside input protection diodes and short-circuit protected output. The device supports dual-supply operation from ±3 V to ±20 V, with guaranteed performance over –40°C to +85°C - distinguishing it from NE5534x variants rated only to 70°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Noise Voltage | 3.5 nV/√Hz typ @ 1 kHz - enables high-resolution audio and low-level sensor signal amplification without added noise floor degradation. |
| Unity-Gain Bandwidth | 10 MHz typ - supports stable gain-of-1 buffering and wideband AC-coupled signal paths up to audio and ultrasonic frequencies. |
| Common-Mode Rejection Ratio | 100 dB typ - rejects power supply ripple and electromagnetic interference in single-ended input configurations with unbalanced sources. |
| Output Voltage Swing | ±16 V min @ ±18 V supply, RL ≥ 600 Ω - delivers full-rail headroom for driving line-level audio loads and ADC front-ends without clipping. |
| Slew Rate | 13 V/μs typ - preserves transient fidelity in fast-slewing signals such as pulse amplification and active filter step responses. |
| Supply Voltage Range | ±3 V to ±20 V - accommodates both low-power portable instrumentation and high-headroom professional audio rails. |
| Operating Temperature | –40°C to +85°C - qualified for industrial control, automotive cabin electronics, and outdoor medical equipment environments. |
Pinout & Package
SA5534AD is housed in an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm, optimized for surface-mount assembly and thermal dissipation in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BALANCE (Pin 1) | Offset null adjustment terminal | Connects to one end of a 10-kΩ potentiometer for manual input offset voltage trimming during calibration or production test. |
| IN− (Pin 2) | Inverting input | Primary feedback node in inverting amplifier configurations; accepts differential or single-ended signals with 12 V common-mode range. |
| IN+ (Pin 3) | Noninverting input | High-impedance (≥30 kΩ) input for unity-gain buffers and noninverting gain stages; referenced to system ground or virtual ground. |
| VCC− (Pin 4) | Negative supply rail | Accepts –3 V to –20 V; must be decoupled with 0.1 µF ceramic capacitor placed ≤2 mm from pin to minimize PSRR degradation. |
| COMP (Pin 5) | Compensation output | Provides internal compensation node access; used with COMP/BAL to configure dominant-pole frequency compensation for gain stability. |
| OUT (Pin 6) | Amplifier output | Capable of sourcing/sinking ≥38 mA; drives 600 Ω loads directly; requires local 0.1 µF bypass to ground for RF immunity. |
| VCC+ (Pin 7) | Positive supply rail | Accepts +3 V to +20 V; shares same decoupling requirement as VCC−; mismatch >1 V between rails degrades CMRR. |
| COMP/BAL (Pin 8) | Shared compensation/offset terminal | Completes offset null network with BALANCE; also connects external capacitor for bandwidth tailoring in high-gain applications. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise bipolar input stage | 3.5 nV/√Hz input voltage noise enables sub-60 dBu noise floors in microphone preamps and strain gauge amplifiers. |
| External frequency compensation | COMP and COMP/BAL pins allow precise GBW control - e.g., 22 pF capacitor reduces unity-gain bandwidth to ~6 MHz while improving phase margin for capacitive loads. |
| Offset voltage nulling capability | BALANCE and COMP/BAL support <1 mV residual offset after trimming - critical for DC-coupled transducer interfaces and servo error amplifiers. |
| Robust output short-circuit protection | Withstands indefinite output-to-rail shorts without latch-up or parameter shift - ensures reliability in field-deployed test equipment and motor drive feedback loops. |
| Wide supply range with rail-to-rail compatible output swing | Delivers ±16 V peak-to-peak into 600 Ω from ±18 V supplies - eliminates need for external level-shifting in legacy analog I/O modules. |
Applications
| Audio Preamplifier | Servo Error Amplifier |
|---|---|
Use Scenario: Low-noise amplification of electret microphone or moving-coil phono cartridge signals prior to ADC sampling. IC Role / Device Role / Timing Role: Primary gain stage with DC-coupled input and adjustable offset nulling to reject thermal drift in studio-grade front-ends. Use Value: 3.5 nV/√Hz noise density preserves SNR >105 dB(A) in 20 Hz–20 kHz band; 10 MHz bandwidth supports harmonic-rich instrument capture without phase distortion. |
Use Scenario: Closed-loop position correction in industrial CNC axis controllers using resolver or encoder feedback. IC Role / Device Role / Timing Role: High-slew-rate error amplifier comparing commanded vs actual position and driving PWM motor drivers. Use Value: 13 V/μs slew rate ensures <1 µs response to step errors; 100 dB CMRR rejects common-mode noise from switching power supplies feeding the motor driver stage. |
| Medical Instrumentation | Telephone Channel Amplifier |
Use Scenario: Biopotential signal conditioning in ECG/EEG patient monitors requiring high common-mode rejection and low 1/f noise. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with guarded inputs and calibrated offset nulling. Use Value: –40°C to +85°C operating range supports sterilization cycles and ambient temperature variations; 0.5 mV max input offset enables accurate baseline stabilization. |
Use Scenario: Line-driver amplification in VoIP gateway analog interface cards handling two-wire PSTN loop signals. IC Role / Device Role / Timing Role: Differential line driver with programmable gain and external compensation for impedance matching to 600 Ω telecom lines. Use Value: ±16 V output swing meets GR-909 line-driving requirements; 200 kΩ minimum input resistance minimizes loading on hybrid transformer secondary windings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA1611AID | FET-input architecture (0.1 pA IB), lower noise (1.1 nV/√Hz), but higher cost and no external compensation pins. | Preferred for ultra-low-current photodiode or piezoelectric sensor interfaces; unsuitable where BALANCE/COMP/BAL trimming is required. | Select OPA1611AID when input bias current <100 pA is mandatory and external compensation is unnecessary. |
| NE5534ADR | Same pinout and core specs, but rated only for 0°C to 70°C; lacks extended temperature qualification. | Acceptable for commercial-grade audio gear or lab equipment not exposed to thermal extremes. | Choose NE5534ADR only if ambient operating temperature remains within 0–70°C and industrial reliability certification is not required. |
Compared with SA5534AD, OPA1611AID offers superior noise and input impedance but forfeits offset-trimming flexibility and temperature robustness, while NE5534ADR matches form/function at lower cost but cannot replace SA5534AD in automotive or outdoor industrial deployments due to its narrower temperature rating.
Availability
SA5534AD is available at Aetrix Electronics and suitable for audio preamplifiers, servo error amplifiers, and medical instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SA5534AD 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of heritage in precision op-amp design and manufacturing.
The SA5534AD belongs to TI's legacy high-performance op-amp family engineered for low-noise, wide-bandwidth signal conditioning in industrial, medical, and professional audio systems - emphasizing thermal stability, DC accuracy, and ruggedness over consumer-grade alternatives.
FAQ
What is the maximum supply voltage for SA5534AD?
The absolute maximum supply voltage for SA5534AD is ±22 V, but recommended operating conditions specify ±3 V to ±20 V. Exceeding ±22 V risks permanent damage per TI's Absolute Maximum Ratings table. For reliable long-term operation, maintain supply rails within ±18 V - especially when driving 600 Ω loads - to stay within thermal limits and preserve 100 dB CMRR performance. SA5534AD must always be powered with symmetrical dual supplies; single-supply use is not supported.
Does SA5534AD support external frequency compensation?
Yes, SA5534AD supports external frequency compensation via its dedicated COMP (Pin 5) and COMP/BAL (Pin 8) terminals. Connecting a capacitor (e.g., 22 pF) between these pins reduces unity-gain bandwidth from 10 MHz to ~6 MHz while improving phase margin for capacitive loads or high-gain configurations. This capability is explicitly documented in TI's SLOS070D datasheet Section 8.3.5 and Figure 10, enabling stable operation where internal compensation would otherwise cause peaking or oscillation.
How do I perform offset nulling on SA5534AD?
To null input offset voltage on SA5534AD, connect a 10-kΩ potentiometer between BALANCE (Pin 1) and COMP/BAL (Pin 8), with the wiper tied to VCC− (Pin 4). Adjust the pot until output voltage equals mid-supply under zero-input conditions. This procedure is validated in TI's Application Circuit Diagram (Figure 10) and leverages the device's bipolar input stage for sub-millivolt residual offset. Avoid using resistors >20 kΩ in the null network to prevent noise injection and thermal drift.
Is SA5534AD pin-compatible with NE5534ADR?
Yes, SA5534AD is pin-compatible with NE5534ADR - both use identical SOIC-8 (D) packaging and share identical pin functions, electrical connections, and footprint dimensions (4.90 mm × 3.91 mm). However, SA5534AD is specified for –40°C to +85°C operation, whereas NE5534ADR is rated only for 0°C to 70°C. Substitution is electrically safe but invalidates thermal qualification in industrial or automotive applications requiring extended temperature compliance.
What is the typical input bias current of SA5534AD?
The typical input bias current of SA5534AD is 20 nA at 25°C, rising to 300 nA across the full –40°C to +85°C operating range. This value reflects its bipolar input transistor design - higher than FET-input op-amps but advantageous for low-noise performance and predictable DC behavior in precision gain blocks. Input bias current is measured with VO = 0 V and is critical when selecting feedback resistor values to minimize offset voltage contribution in inverting configurations.
SA5534AD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 13V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 500 nA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 4mA
- Current - Output / Channel:
- 38 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SA5534AD FAQ
1.How can I place an order for SA5534AD through Aetrix?
Please submit a Request for Quotation (RFQ) for SA5534AD 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 SA5534AD reliable?
The price and inventory of SA5534AD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA5534AD is usually 5 days.
3.What payment methods are accepted for SA5534AD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA5534AD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA5534AD?
SA5534AD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA5534AD 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 SA5534AD?
For technical support, including SA5534AD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA5534AD requirements.
6.How does Aetrix verify that SA5534AD is sourced from the original manufacturer or authorized distributors?
All SA5534AD 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 SA5534AD meets industry standards.
7.What is the process for return or replacement of SA5534AD?
All SA5534AD units undergo pre-shipment inspection (PSI). If there is an issue with SA5534AD, 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 SA5534AD part is unused and in its original packaging.
Return procedure for SA5534AD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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