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Texas Instruments OPA2301AIDGKT
- Part No.:
- OPA2301AIDGKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2301AIDGKT.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:994
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Product details
Overview
OPA2301AIDGKT from Texas Instruments is a dual-channel, low-noise, fast-settling CMOS operational amplifier optimized for 16-bit resolution systems. It delivers 150MHz unity-gain bandwidth, 3nV/√Hz input voltage noise, and 150ns 16-bit settling time, operating from +2.7V to +5.5V single supply. It is used as an ADC input driver in high-speed data acquisition systems requiring precision signal conditioning.
For engineers reviewing the OPA2301AIDGKT datasheet, OPA2301AIDGKT pinout, OPA2301AIDGKT application, or OPA2301AIDGKT equivalent, key selection criteria include its rail-to-rail output swing (±100mV), shutdown current of 5µA per amplifier, dual VSSOP-8 package footprint, and verified performance driving 1.25MSPS 16-bit ADCs like the ADS8401.
Technical Context
The OPA2301AIDGKT implements a classic two-stage CMOS topology with folded-cascode gain stage and Class AB output stage, enabling both high slew rate (80V/μs) and unity-gain stability. Its input stage features ultra-low bias current (±0.1pA typical) and high input impedance (10¹³ Ω || 3pF), supporting high-impedance sensor interfaces without loading error.
Unlike the OPA2300, the OPA2301AIDGKT lacks an enable/shutdown pin - confirmed by pin configuration Figure 4-6 and Table 4-1, which shows no Enable terminal in its 8-pin VSSOP layout. It is specified across −40°C to +125°C and supports capacitive load drive up to 10pF with series resistance compensation per Figure 5-16.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 150MHz unity-gain bandwidth enables stable amplification of signals up to ~75MHz at G=2 without phase margin loss. |
| Settling time | 150ns to 16-bit accuracy ensures full settling before next sample in ≥6.7MSPS systems using 16-bit ADCs. |
| Input voltage noise | 3nV/√Hz at >1MHz minimizes added noise in IF/RF amplifier stages and preamplifiers for wideband sensors. |
| Output swing | Within 100mV of rails (at RL = 2kΩ) allows maximum dynamic range in single-supply 5V systems, preserving SNR. |
| Supply range | +2.7V to +5.5V operation supports battery-powered instrumentation and industrial PLC analog I/O modules. |
| Quiescent current | 9.5mA per amplifier (typical at 5.5V) balances speed and power for portable test equipment and handheld meters. |
| THD+N | 0.003% at 1kHz enables clean signal reproduction in audio line drivers and precision active filters. |
Pinout & Package
VSSOP-8 (DGK) package: 2.3mm × 2.0mm body, 0.5mm pitch, exposed thermal pad (not electrically connected), RoHS-compliant NiPdAu finish, MSL Level-2-260°C-1 year.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply rail connection; must be decoupled with 0.1µF ceramic capacitor placed ≤2mm from pin. |
| 2 | OutB | Output of Channel B; capable of sourcing/sinking 70mA, supports rail-to-rail swing into 2kΩ loads. |
| 3 | −InB | Inverting input of Channel B; high-impedance node (10¹³ Ω), sensitive to PCB leakage and ESD. |
| 4 | +InB | Non-inverting input of Channel B; matched to −InB for common-mode rejection; requires symmetrical layout. |
| 5 | +InA | Non-inverting input of Channel A; electrically isolated from Channel B inputs; shares same CMRR spec (66–80dB). |
| 6 | −InA | Inverting input of Channel A; referenced to same V− as Channel B; differential pair biasing sets input offset. |
| 7 | OutA | Output of Channel A; identical AC/DC specs to OutB; not internally multiplexed or gated. |
| 8 | V− | Negative supply rail (typically ground in single-supply); return path for all internal bias currents and output sink current. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable | Guaranteed stable at G = +1 without external compensation, simplifying design of buffer and gain-of-one stages. |
| Rail-to-rail output | Swings to within 100mV of V+ and V− under 2kΩ load, maximizing usable voltage range in 3.3V or 5V systems. |
| Low input bias current | ±0.1pA typical enables use with high-value feedback networks (>10MΩ) and piezoelectric sensor interfaces. |
| High open-loop gain | 95–106dB ensures <100µV error from finite gain in precision integrators and low-gain instrumentation amps. |
| Wide common-mode range | Extends from (V−) − 0.2V to (V+) − 0.9V, allowing direct sensing of signals near ground or near supply in single-supply configs. |
Applications
| 16-Bit ADC Input Driver | Low-Noise Preamplifier |
|---|---|
Use Scenario: Driving the analog input of the ADS8401 16-bit, 1.25MSPS SAR ADC in a single-supply 5V data acquisition system. IC Role / Device Role / Timing Role: Precision buffer and gain stage ensuring full 16-bit settling within 150ns before ADC sampling edge. Use Value: Achieves 84.3dB SNR and −99.3dB THD per Table 7-1, meeting 16-bit ENOB requirements without calibration. |
Use Scenario: Amplifying microvolt-level signals from thermocouples or strain gauges in industrial monitoring nodes. IC Role / Device Role / Timing Role: First-stage gain element with ultra-low 3nV/√Hz noise and sub-picoamp bias current to preserve signal integrity. Use Value: Enables detection of <1µV signals over 10kHz bandwidth without significant noise floor elevation or input loading error. |
| IF/RF Amplifier | Active Filtering |
Use Scenario: Intermediate-frequency amplification in 10–100MHz SDR receiver front-ends with 5V supply constraints. IC Role / Device Role / Timing Role: Fixed-gain (G=2) broadband amplifier providing flat response and low distortion up to 75MHz. Use Value: Delivers 0.1dB gain flatness to 100MHz (Figure 5-6) and −100dBc 2nd/3rd harmonics at 1MHz (Figure 5-7), minimizing spectral regrowth. |
Use Scenario: Implementing 4th-order low-pass anti-aliasing filter preceding a 16-bit ADC in motor control current sensing. IC Role / Device Role / Timing Role: Dual-opamp topology realizing transimpedance + Sallen-Key stages with matched AC response. Use Value: Maintains <0.01% group delay variation across passband due to 150MHz GBW, preventing phase distortion in multi-pole filters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2350EA/250 | Lower bandwidth (38MHz), higher noise (7nV/√Hz), but includes rail-to-rail input and shutdown pin. | Suitable for lower-frequency, lower-power applications where enable control is required; not viable for ≥10MHz IF stages. | Select when shutdown functionality and input rail-to-rail operation outweigh bandwidth/noise requirements. |
| LMH6629MA/NOPB | Higher bandwidth (1.5GHz), higher noise (1.9nV/√Hz), higher quiescent current (14mA), SO-8 only. | Better for RF gain blocks >100MHz; less suitable for battery-powered 16-bit ADC drivers due to power and layout sensitivity. | Select when >500MHz small-signal bandwidth is mandatory and power budget allows ≥14mA per channel. |
Compared with OPA2301AIDGKT, OPA2350EA/250 trades 112MHz bandwidth and 4nV/√Hz noise for integrated shutdown and rail-to-rail input - making it preferable in power-gated sensor nodes but inadequate for IF amplification. LMH6629MA/NOPB delivers 10× more bandwidth at higher noise and power, targeting RF rather than precision ADC driving.
Availability
OPA2301AIDGKT is available at Aetrix Electronics and suitable for high-speed data acquisition, precision instrumentation, and industrial analog I/O modules requiring stable component supply across extended temperature ranges.
Supply support for OPA2301AIDGKT 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 op amps and precision signal chain solutions.
The OPAx30x product line was designed specifically for 16-bit resolution systems demanding fast settling, low noise, and single-supply operation - targeting data converters, medical imaging front-ends, and test equipment signal paths.
FAQ
Does OPA2301AIDGKT have a shutdown pin?
No, OPA2301AIDGKT does not include a shutdown function. Unlike the OPA2300 (which has EnableA/EnableB pins in VSSOP-10), the OPA2301AIDGKT's VSSOP-8 pinout (Figure 4-6) contains only power, input, and output terminals - confirmed in Table 4-1 and Section 6.6. The OPA2301AIDGKT remains fully active whenever powered within its supply range.
What is the maximum capacitive load OPA2301AIDGKT can drive stably?
OPA2301AIDGKT can drive up to 10pF capacitively without external compensation when using recommended series resistance (e.g., 40Ω for 10pF, per Figure 5-16). For larger loads, a series resistor between output and load is required to maintain phase margin; stability is not guaranteed beyond 10pF without added isolation.
Is OPA2301AIDGKT pin-compatible with OPA2300AIDGSR?
No, OPA2301AIDGKT is not pin-compatible with OPA2300AIDGSR. OPA2301AIDGKT uses an 8-pin VSSOP (DGK) package with dual op-amp I/O only, while OPA2300AIDGSR uses a 10-pin VSSOP (DGS) package with two additional Enable pins (pins 5 and 10). Their pinouts and functions differ fundamentally per Figures 4-5 and 4-6.
What is the typical quiescent current of OPA2301AIDGKT at 3.3V supply?
At 3.3V supply, OPA2301AIDGKT draws 9.5mA per amplifier (typical), as specified in Section 5.4 Electrical Characteristics. Figure 5-27 confirms quiescent current remains stable across 2.7V–5.5V, varying by <0.5mA over that range - so 9.5mA is valid at 3.3V.
Can OPA2301AIDGKT operate on ±2.5V split supplies?
Yes, OPA2301AIDGKT supports split supplies as long as total voltage remains within 2.7V to 5.5V - e.g., ±2.5V yields 5V total, satisfying VS specification. Its input common-mode range extends to (V−) − 0.2V, allowing inputs down to −2.7V, and output swings to within 100mV of either rail, supporting true bipolar signal handling.
OPA2301AIDGKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 80V/µs
- Gain Bandwidth Product:
- 150 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 9.5mA (x2 Channels)
- Current - Output / Channel:
- 70 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-VSSOP
OPA2301AIDGKT FAQ
1.How can I place an order for OPA2301AIDGKT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2301AIDGKT 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 OPA2301AIDGKT reliable?
The price and inventory of OPA2301AIDGKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2301AIDGKT is usually 5 days.
3.What payment methods are accepted for OPA2301AIDGKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2301AIDGKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2301AIDGKT?
OPA2301AIDGKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2301AIDGKT 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 OPA2301AIDGKT?
For technical support, including OPA2301AIDGKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2301AIDGKT requirements.
6.How does Aetrix verify that OPA2301AIDGKT is sourced from the original manufacturer or authorized distributors?
All OPA2301AIDGKT 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 OPA2301AIDGKT meets industry standards.
7.What is the process for return or replacement of OPA2301AIDGKT?
All OPA2301AIDGKT units undergo pre-shipment inspection (PSI). If there is an issue with OPA2301AIDGKT, 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 OPA2301AIDGKT part is unused and in its original packaging.
Return procedure for OPA2301AIDGKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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