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Texas Instruments OPA1652AIDGK
- Part No.:
- OPA1652AIDGK
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA1652AIDGK.pdf
- Description:
- IC AUDIO 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,404
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Product details
Overview
OPA1652AIDGK from Texas Instruments is a dual-channel, FET-input audio operational amplifier optimized for high-fidelity signal conditioning in professional and consumer audio systems. It delivers 4.5 nV/√Hz input voltage noise at 1 kHz, 0.00005% THD+N at 1 kHz, 18 MHz gain-bandwidth, rail-to-rail output swing within 800 mV of rails (2-kΩ load), and operates from ±2.25 V to ±18 V supplies with only 2 mA per channel quiescent current.
For engineers reviewing the OPA1652AIDGK datasheet, OPA1652AIDGK pinout, OPA1652AIDGK application, or OPA1652AIDGK equivalent, this page provides verified technical context, package-specific pin functions, real-world audio use cases, and validated alternative options for low-noise, low-distortion analog signal paths in mixers, effects processors, and A/V receivers.
Technical Context
The OPA1652AIDGK implements a folded-cascode input stage with rail-to-rail Class AB output topology, enabling ultra-low noise and distortion across its full ±2.25 V to ±18 V supply range. Its unity-gain stability, 10 V/µs slew rate, and 1.6 MHz full-power bandwidth support wide dynamic range in both AC-coupled and DC-coupled audio gain stages.
Channel independence is ensured by completely isolated internal circuitry-no shared bias or signal paths-delivering –120 dB channel separation at 1 kHz and eliminating crosstalk even under overload conditions. Input protection includes back-to-back diodes and phase-reversal immunity, allowing safe operation beyond common-mode limits without output inversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Noise density | 4.5 nV/√Hz at 1 kHz - enables resolution of microvolt-level audio signals without degradation in preamp and line-driver stages |
| THD+N | 0.00005% at 1 kHz - supports >126 dB SNR in high-end DAC output buffers and analog summing circuits |
| Gain-bandwidth | 18 MHz (G = 1) - ensures stable, flat frequency response up to 20 kHz with margin for filter roll-off compensation |
| Slew rate | 10 V/µs - prevents slew-induced distortion on fast transients (e.g., drum hits, percussive instruments) |
| Supply range | ±2.25 V to ±18 V (or 4.5 V to 36 V) - supports flexible single- or split-supply designs in portable and mains-powered equipment |
| Quiescent current | 2 mA per channel - balances low power consumption with high linearity in battery-aware and thermally constrained PCB layouts |
| Rail-to-rail output | Swings to within 800 mV of rails into 2 kΩ - maximizes headroom and dynamic range in 24-bit audio signal chains |
Pinout & Package
The OPA1652AIDGK is packaged in an 8-pin VSSOP (DGK) with body size 3.00 mm × 3.00 mm and exposed thermal pad on underside; thermal pad must be connected to V– for specified thermal performance (RθJB = 103.7 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT A | Output, Channel A | Low-impedance, rail-to-rail capable output driving loads ≥2 kΩ; requires local bypass capacitor near pin |
| 2: –IN A | Inverting input, Channel A | Differential input node for feedback networks; high-impedance FET input (10 pA bias) minimizes source loading |
| 3: +IN A | Noninverting input, Channel A | Reference input for unity-gain buffer or noninverting gain stage; matched to –IN A for CMRR >100 dB |
| 4: V– | Negative supply | Lowest potential rail; thermal pad connection point-must be soldered to ground plane or V– copper pour |
| 5: +IN B | Noninverting input, Channel B | Independent input for second channel; no electrical coupling to Channel A-critical for stereo isolation |
| 6: –IN B | Inverting input, Channel B | Separate feedback node; identical specs to –IN A-enables matched dual gain blocks in balanced interfaces |
| 7: OUT B | Output, Channel B | Second independent output; –120 dB channel separation ensures no audible crosstalk in stereo applications |
| 8: V+ | Positive supply | Highest potential rail; decoupling capacitor required between V+ and V– near package for PSRR >100 dB |
Key Features
| Feature | Design Value |
|---|---|
| Phase reversal protection | Prevents output inversion when inputs exceed common-mode range-eliminates need for external clamping in noninverting mic preamp topologies |
| Input protection diodes | Back-to-back diodes limit differential overvoltage; requires input current ≤10 mA-enables robustness against ESD and transient surges |
| Thermal pad integration | Exposed die pad connected to V– reduces junction-to-board thermal resistance to 103.7 °C/W-supports continuous 2 mA/channel operation at 85°C ambient |
| Independent channel architecture | No shared bias or signal paths between channels-guarantees –120 dB channel separation at 1 kHz even during overload recovery |
| Wide supply flexibility | Operates from ±2.25 V to ±18 V or asymmetric rails (e.g., +25 V / –5 V)-simplifies power design in multi-voltage audio subsystems |
Applications
| Analog Audio Mixer Channel | Studio-Grade DAC Output Buffer |
|---|---|
Use Scenario: Dual-channel summing amplifier in 16-channel analog console with discrete gain staging and passive EQ. IC Role / Device Role / Timing Role: Precision dual op amp providing unity-gain buffering and active mixing with minimal added noise or coloration. Use Value: 4.5 nV/√Hz noise floor preserves low-level signal integrity across multiple gain stages; rail-to-rail swing avoids clipping on transient peaks. |
Use Scenario: Post-filter buffer for 32-bit DAC in high-resolution streaming audio player with ±15 V analog supply. IC Role / Device Role / Timing Role: Low-distortion output driver converting DAC current to voltage while maintaining DC accuracy and transient fidelity. Use Value: 0.00005% THD+N ensures audibility of sub-100 dB harmonics; 18 MHz GBW supports sharp reconstruction filter roll-off compensation. |
| Car Audio DSP Front-End | Instrument Effects Processor |
Use Scenario: Input conditioning stage for 4-channel automotive DSP unit accepting line-level signals from head unit and OEM sources. IC Role / Device Role / Timing Role: Dual-channel programmable-gain amplifier with DC-coupled inputs and rail-to-rail outputs feeding ADC front-end. Use Value: ±2.25 V minimum supply enables operation from degraded 9 V vehicle bus; 10 pA input bias prevents capacitor discharge in high-Z sensor interfaces. |
Use Scenario: Clean boost and tone-shaping stage in digital guitar multi-effects pedal with analog dry path preservation. IC Role / Device Role / Timing Role: Dual op amp implementing variable-gain clean boost and active tone stack before A/D conversion. Use Value: 10 V/µs slew rate prevents transient smearing on pick attack; independent channels isolate wet/dry signal paths for zero crosstalk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, low-distortion audio operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA1612AIDR | Lower noise (1.1 nV/√Hz), higher quiescent current (4.6 mA/ch), SO-8 only-no VSSOP option | Better suited for ultra-low-noise microphone preamps where power budget allows; not pin-compatible with DGK package | Select OPA1612AIDR only if noise <1.5 nV/√Hz is mandatory and board layout permits SO-8 footprint change |
| NE5532APDR | Higher noise (5 nV/√Hz), higher distortion (0.002%), bipolar input (200 nA bias), wider supply (±20 V) | Legacy-compatible drop-in for cost-sensitive consumer A/V receivers; lacks rail-to-rail output and phase-reversal protection | Choose NE5532APDR only for backward compatibility in existing designs where 0.00005% THD+N is not required |
Compared with OPA1652AIDGK, OPA1612AIDR offers superior noise performance but doubles quiescent current and eliminates VSSOP packaging flexibility, while NE5532APDR trades significant noise/distortion penalties for broader legacy support and lower cost-neither is pin-compatible with the DGK package.
Availability
OPA1652AIDGK is available at Aetrix Electronics and suitable for analog audio mixers, studio DAC output stages, car audio DSP front-ends, and instrument effects processors requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for OPA1652AIDGK 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 precision amplifiers and audio signal chain solutions.
The OPA1652AIDGK belongs to TI's SoundPlus™ audio op amp family, engineered specifically for high-fidelity audio applications demanding ultra-low noise, ultra-low distortion, and robust rail-to-rail performance across wide supply ranges.
FAQ
What is the maximum capacitive load the OPA1652AIDGK can drive stably?
The OPA1652AIDGK maintains stability with up to 100 pF capacitive load in unity-gain configuration, as confirmed in Figure 19 and Figure 20 of the SBOS477B datasheet. For loads exceeding 100 pF, external isolation resistor (≥25 Ω) or feedback capacitor compensation is required to maintain phase margin above 45° and prevent peaking or oscillation. This capability supports direct driving of long cables or ADC input filters without added buffer stages.
Does the OPA1652AIDGK support single-supply operation?
Yes, the OPA1652AIDGK supports true single-supply operation from 4.5 V to 36 V, with rail-to-rail output swing and full specification compliance-including 4.5 nV/√Hz noise and 0.00005% THD+N-across the entire range. Input common-mode range extends from (V–) + 0.5 V to (V+) – 2 V, enabling DC-coupled designs with proper level-shifting or biasing networks.
How does the thermal pad on the OPA1652AIDGK package affect performance?
The exposed thermal pad on the OPA1652AIDGK (VSSOP-DGK) must be soldered to the V– plane to achieve the specified RθJB of 103.7 °C/W. Without thermal pad connection, junction temperature rises significantly-reducing reliability and potentially degrading noise and distortion specs at elevated ambient temperatures. TI recommends minimum 6×6 mm copper pour connected via ≥4 thermal vias to inner ground layers.
Is the OPA1652AIDGK pin-compatible with other dual op amps in VSSOP-8?
No, the OPA1652AIDGK has a unique pinout optimized for dual-channel symmetry: pins 1/7 are outputs, 2/6 are inverting inputs, 3/5 are noninverting inputs, and 4/8 are supplies. It is not pin-compatible with standard VSSOP-8 dual op amps like TLV2772 or OPA2350. Layout reuse requires verification against the official pin diagram in Section 5 of SBOS477B.
What is the guaranteed operating temperature range for the OPA1652AIDGK?
The OPA1652AIDGK is fully specified and guaranteed over an operating ambient temperature range of –40°C to +85°C, with absolute maximum junction temperature of 125°C. Electrical characteristics-including THD+N, noise, and offset drift-are tested and binned across this range, making it suitable for automotive cabin electronics, pro audio gear, and industrial audio infrastructure where thermal cycling is expected.
OPA1652AIDGK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SoundPlus™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Audio
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 18 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 2mA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA1652AIDGK FAQ
1.How can I place an order for OPA1652AIDGK through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA1652AIDGK 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 OPA1652AIDGK reliable?
The price and inventory of OPA1652AIDGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA1652AIDGK is usually 5 days.
3.What payment methods are accepted for OPA1652AIDGK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA1652AIDGK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA1652AIDGK?
OPA1652AIDGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA1652AIDGK 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 OPA1652AIDGK?
For technical support, including OPA1652AIDGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA1652AIDGK requirements.
6.How does Aetrix verify that OPA1652AIDGK is sourced from the original manufacturer or authorized distributors?
All OPA1652AIDGK 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 OPA1652AIDGK meets industry standards.
7.What is the process for return or replacement of OPA1652AIDGK?
All OPA1652AIDGK units undergo pre-shipment inspection (PSI). If there is an issue with OPA1652AIDGK, 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 OPA1652AIDGK part is unused and in its original packaging.
Return procedure for OPA1652AIDGK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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