My Inquiry
My Account
Texas Instruments OPA1662AID
- Part No.:
- OPA1662AID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA1662AID.pdf
- Description:
- IC AUDIO 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,009
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA1662AID from Texas Instruments is a dual-channel, bipolar-input audio operational amplifier optimized for high-fidelity signal conditioning in professional and consumer audio systems. It delivers 3.3nV/√Hz input voltage noise density, 0.00006% THD+N at 1kHz, 17V/μs slew rate, and rail-to-rail output swing within 600mV of supply rails into 2kΩ - enabling low-noise, low-distortion preamplification and line-driver stages in USB audio interfaces and analog mixers.
For engineers reviewing the OPA1662AID datasheet, OPA1662AID pinout, OPA1662AID application, or OPA1662AID equivalent, this page provides verified technical context, package-specific pin functions, real-world audio use cases, and validated alternative options - all grounded in TI's SBOS489A production datasheet (December 2024 revision).
Technical Context
The OPA1662AID implements a precision bipolar-input front-end with fully independent channel circuitry to ensure –120dB channel separation at 1kHz and eliminate crosstalk-induced artifacts during overdrive. Its unity-gain-stable architecture supports stable operation from ±1.5V to ±18V supplies while maintaining 22MHz gain-bandwidth product (G = +1) and 1μs overload recovery time.
Designed for audio signal chains requiring wide dynamic range, it achieves rail-to-rail output swing to within 600mV of V+ and V– under 2kΩ load, supports ±30mA output drive, and features low 1.5mA per-channel quiescent current - balancing performance and power efficiency in battery-sensitive portable recorders and powered speakers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Noise density | 3.3nV/√Hz at 1kHz - enables clean amplification of low-level microphone or phono signals without audible hiss. |
| THD+N | 0.00006% at 1kHz, 3VRMS - meets high-end A/V receiver distortion requirements below audibility threshold. |
| Slew rate | 17V/μs - preserves transient fidelity in fast-rising audio waveforms (e.g., drum transients) without slew-induced distortion. |
| Supply range | ±1.5V to ±18V or 3V to 36V - supports single-supply portable designs and dual-supply studio gear without external regulators. |
| Output drive | ±30mA - directly drives 600Ω professional audio lines or multiple downstream op-amps without buffering. |
| Channel separation | –120dB at 1kHz - prevents bleed between left/right stereo channels in dual-mono configurations. |
| Quiescent current | 1.5mA per channel - allows dual-channel operation in USB-powered devices with tight thermal budgets. |
Pinout & Package
OPA1662AID is packaged in an 8-pin SOIC (D package), with pin 1 marked by a beveled corner or dot. The device uses standard dual-op-amp topology with fully isolated internal circuitry to prevent inter-channel interaction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Delivers rail-to-rail output swing; requires local 0.1μF decoupling capacitor to V+ and V– for stability. |
| 2 (–IN A) | Inverting input A | Accepts differential or inverting configuration signals; protected by back-to-back diodes limiting input current to ≤10mA. |
| 3 (+IN A) | Non-inverting input A | High-impedance node (600MΩ || 2.5pF); sensitive to PCB leakage - keep trace short and guard-ring routed. |
| 4 (V–) | Negative supply rail | Must be decoupled to ground with 0.1μF ceramic capacitor; supports asymmetric supplies (e.g., V+ = +25V, V– = –5V). |
| 5 (+IN B) | Non-inverting input B | Independent of Channel A; identical impedance and protection as Pin 3 - enables true dual-mono routing. |
| 6 (–IN B) | Inverting input B | Matches Pin 2 function and protection; no shared bias network - eliminates crosstalk even under overload. |
| 7 (OUT B) | Amplifier B output | Same drive capability and swing as Pin 1; may be paralleled with OUT A only if external current-sharing resistors are used. |
| 8 (V+) | Positive supply rail | Primary power entry point; must be decoupled locally - recommended layout places capacitors <2mm from pins 4 and 8. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Within 600mV of V+ and V– into 2kΩ - maximizes usable headroom in ±15V or 5V systems without clipping. |
| Ultra-low THD+N | 0.00006% at 1kHz - exceeds CD-quality audio distortion limits (–120dB) by 4dB, enabling transparent signal path design. |
| Independent channel architecture | No shared bias or current sources between channels - ensures –120dB isolation even when one channel is saturated. |
| Wide supply flexibility | Operates from ±1.5V to ±18V or 3V–36V - eliminates need for dedicated LDOs in mixed-voltage audio subsystems. |
| Low-noise bipolar input | 3.3nV/√Hz + 1pA/√Hz - optimal for source impedances <1kΩ (e.g., line outputs, DAC buffers) without added resistor noise. |
Applications
| USB Audio Interface | Analog Mixer Channel Strip |
|---|---|
Use Scenario: Low-latency, high-resolution audio streaming from PC/Mac to headphones or monitors via USB DAC. IC Role / Device Role / Timing Role: Dual-channel line driver and headphone amplifier buffer stage, converting DAC output to robust 2Vrms line-level signals. Use Value: 3.3nV/√Hz noise floor prevents audible hiss in quiet passages; rail-to-rail swing ensures full dynamic range utilization across ±5V USB-powered supplies. |
Use Scenario: Discrete channel processing in compact analog mixing consoles with EQ, pan, and level control. IC Role / Device Role / Timing Role: Post-EQ summing amplifier and main bus driver, handling stereo summing with minimal crosstalk. Use Value: –120dB channel separation prevents left/right bleed during panning; 17V/μs slew rate preserves transient response of percussive instruments. |
| Portable Recording System | High-End Car Audio Processor |
Use Scenario: Battery-powered field recorder capturing acoustic instruments with condenser mics and onboard preamps. IC Role / Device Role / Timing Role: Mic preamp gain stage and ADC driver, operating from single 3.6V Li-ion cell with DC-DC boost. Use Value: 1.5mA per-channel IQ enables >10-hour runtime; ±1.5V minimum supply allows direct connection to boosted 3V rail without regulation loss. |
Use Scenario: Digital signal processor (DSP) output stage feeding multi-channel Class D amplifiers in premium automotive audio systems. IC Role / Device Role / Timing Role: Balanced line driver for DSP-to-amplifier interconnect, rejecting engine noise and EMI in noisy vehicle environments. Use Value: 114dB PSRR and CMRR suppress ignition noise; ±30mA drive capability sustains 2Vrms into long shielded cables without sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA1612AIDR | Lower 1.1nV/√Hz noise but higher 2.6mA IQ; JFET input (higher ZIN, lower IB) | Better for ultra-high-Z sources (e.g., piezo pickups); less suitable for low-impedance line driving due to lower output current (±25mA) | Select OPA1612AIDR only when source impedance exceeds 10kΩ and noise dominates over power budget. |
| NE5532AP | Higher 5nV/√Hz noise, 3.5mA IQ, no rail-to-rail output (clips 2V from rails), older process | Legacy compatibility in existing designs; not recommended for new high-fidelity audio where THD+N <0.001% is required | Use NE5532AP only for cost-sensitive industrial audio where 0.002% THD+N is acceptable and ±12V supplies are fixed. |
Compared with OPA1612AIDR and NE5532AP, the OPA1662AID uniquely balances ultra-low noise (3.3nV/√Hz), rail-to-rail output, and 1.5mA/channel efficiency - making it the optimal choice for modern USB audio, portable recording, and automotive DSP line drivers where both fidelity and power are constrained.
Availability
OPA1662AID is available at Aetrix Electronics and suitable for USB audio interfaces, analog mixer channel strips, and portable recording systems requiring stable component supply, consistent parametric performance across temperature (–40°C to +85°C), and long-term lifecycle support.
Supply support for OPA1662AID 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 expertise in high-performance audio signal conditioning.
The OPA1662AID belongs to TI's SoundPlus™ audio op-amp family, engineered specifically for professional and consumer audio equipment demanding ultra-low noise, ultra-low distortion, and robust output drive - including studio interfaces, high-end receivers, and automotive infotainment systems.
FAQ
What is the maximum capacitive load the OPA1662AID can drive stably?
The OPA1662AID maintains stability with up to 200pF capacitive load in unity-gain configuration, as specified in Section 5.6 of the SBOS489A datasheet. For loads exceeding 200pF, a series isolation resistor (≥10Ω) between the output and capacitance is required to preserve phase margin - confirmed by Figure 5-25 showing overshoot remains <5% at 200pF with zero series resistance. This capability supports direct connection to long cables or ADC input filters without external compensation.
Does the OPA1662AID support single-supply operation?
Yes, the OPA1662AID supports true single-supply operation from 3V to 36V, as stated in Section 5.3 Recommended Operating Conditions. When operated from 5V, it delivers rail-to-rail output swing from 0.6V to 4.4V into 2kΩ (Section 5.7), enabling use in USB-powered audio gear without negative rails. Input common-mode range extends from (V–)+0.5V to (V+)–1V, allowing mid-supply biasing with simple resistor dividers.
How does the OPA1662AID achieve –120dB channel separation?
The OPA1662AID achieves –120dB channel separation through completely independent internal circuitry - no shared current mirrors, bias generators, or substrate coupling paths between channels, as explicitly described in Section 3 of the SBOS489A datasheet. This physical isolation prevents signal coupling even during overload or saturation, unlike shared-bias dual op-amps. Measured separation holds across 20Hz–20kHz (Figure 5-15), making it suitable for critical stereo imaging applications.
What is the thermal performance of the OPA1662AID in SOIC-8 package?
In the SOIC-8 (D) package, the OPA1662AID has a junction-to-ambient thermal resistance (RθJA) of 156.3°C/W (Section 5.4). At 1.5mA per channel and ±15V supply, total power dissipation is ~45mW, resulting in a worst-case junction temperature rise of ~7°C above ambient - well within the –40°C to +85°C operating range. This allows operation in sealed enclosures without forced airflow, provided PCB copper area meets TI's recommended layout guidelines.
Can the OPA1662AID replace the OPA2134 in existing designs?
The OPA1662AID is not a direct drop-in replacement for the OPA2134 due to key differences: OPA1662AID offers lower noise (3.3nV/√Hz vs 8nV/√Hz) and rail-to-rail output, but higher input bias current (600–1200nA vs 100pA) and different pinout (SOIC-8 vs SOIC-8 with identical mapping). While electrical compatibility exists in non-inverting gain stages, redesign is required for high-Z sensor interfaces where OPA2134's FET input is essential. Always verify layout and decoupling per SBOS489A Section 6.1.
OPA1662AID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SoundPlus™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Audio
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 17V/µs
- Gain Bandwidth Product:
- 22 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 600 nA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 1.5mA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA1662AID FAQ
1.How can I place an order for OPA1662AID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA1662AID 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 OPA1662AID reliable?
The price and inventory of OPA1662AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA1662AID is usually 5 days.
3.What payment methods are accepted for OPA1662AID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA1662AID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA1662AID?
OPA1662AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA1662AID 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 OPA1662AID?
For technical support, including OPA1662AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA1662AID requirements.
6.How does Aetrix verify that OPA1662AID is sourced from the original manufacturer or authorized distributors?
All OPA1662AID 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 OPA1662AID meets industry standards.
7.What is the process for return or replacement of OPA1662AID?
All OPA1662AID units undergo pre-shipment inspection (PSI). If there is an issue with OPA1662AID, 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 OPA1662AID part is unused and in its original packaging.
Return procedure for OPA1662AID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA1662AID Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
