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Texas Instruments OPA2323IDDFR
- Part No.:
- OPA2323IDDFR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
OPA2323IDDFR.pdf
- Description:
- DUAL, 5.5-V, 20-MHZ, ZERO-CROSS
- Quantity:
- Payment:
- Shipping:
Inventory:2,235
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Product details
Overview
OPA2323IDDFR from Texas Instruments is a dual-channel, rail-to-rail input/output zero-crossover operational amplifier optimized for low-voltage (1.7V–5.5V), high-precision signal conditioning. It delivers 20MHz gain-bandwidth, 114dB typical CMRR, and 33V/μs slew rate, enabling fast settling (200ns to 0.01%) in ADC driver and high-side current sensing applications.
For engineers reviewing the OPA2323IDDFR datasheet, OPA2323IDDFR pinout, OPA2323IDDFR application, or OPA2323IDDFR equivalent, key selection criteria include its zero-crossover architecture for rail-to-rail linearity, 1.6mA/ch quiescent current for power-sensitive designs, and guaranteed operation from –40°C to +125°C in industrial and automotive environments.
Technical Context
The OPA2323IDDFR implements a zero-crossover input stage that eliminates crossover distortion across the full input common-mode range, ensuring consistent precision for both low- and high-side sensing. Its unity-gain stable architecture supports direct driving of ADC inputs with minimal external compensation.
It features internal RFI/EMI filtering on input pins, 62dB EMI rejection at 1.8GHz, and drives up to 150pF capacitive loads without sustained oscillation-critical for sensor interfaces and transducer amplifiers where layout parasitics are unavoidable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 20MHz - enables accurate sampling up to 5MSPS ADCs with <200ns 0.01% settling |
| Slew rate | 33V/μs - supports fast fault detection in motor current sensing and ultrasonic pulse amplification |
| CMRR | 114dB typical - rejects supply and ground noise in single-supply, high-gain bridge sensor circuits |
| Input offset voltage | ±0.15mV typical - ensures <1LSB error in 12-bit systems with ±2.5V full-scale range |
| Quiescent current | 1.6mA per channel - allows dual-channel precision amplification within 3.3V IoT node power budgets |
| Operating temperature | –40°C to +125°C - qualified for under-hood automotive and industrial motor control environments |
| Supply voltage range | 1.7V to 5.5V - interoperable with Li-ion, USB, and logic-level microcontrollers without level-shifting |
Pinout & Package
OPA2323IDDFR is housed in an 8-pin SOT-23-THIN (DDF) package measuring 2.9mm × 2.8mm, with exposed pad thermal connection to V– for enhanced power dissipation in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Output, channel 1 | Delivers rail-to-rail output swing; connects directly to ADC input or load |
| IN1– | Inverting input, channel 1 | Accepts feedback network; compatible with standard inverting configurations |
| IN1+ | Noninverting input, channel 1 | High-impedance (100GΩ || 1pF) node for sensor or reference signal routing |
| V– | Negative supply / ground | Reference for single-supply operation; thermal pad must be connected here |
| IN2+ | Noninverting input, channel 2 | Independent high-Z input for second sensor path or differential pair |
| IN2– | Inverting input, channel 2 | Supports dual independent amplifiers without crosstalk (typical 1µV/V channel separation) |
| OUT2 | Output, channel 2 | Full rail-to-rail drive capability; sinks/sours ±110mA at 5.5V |
| V+ | Positive supply | Accepts 1.7V–5.5V; requires 0.1µF ceramic bypass capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Zero-crossover input stage | Eliminates distortion at input rail transitions-enables precise amplification of rail-to-rail signals in ADC drivers |
| Rail-to-rail I/O | Supports full dynamic range utilization in 1.8V and 3.3V systems without headroom loss |
| Low 5.5nV/√Hz noise at 10kHz | Preserves SNR in microphone preamps and photodiode transimpedance stages |
| 114dB CMRR at 5.5V | Maintains accuracy in noisy industrial bus environments with shared ground return paths |
| EMI/RFI filtered inputs | 62dB rejection at 1.8GHz prevents cellular/WiFi interference from corrupting low-level analog signals |
Applications
| Amplifier Driver for ADCs | High-Side Current Sensing |
|---|---|
Use Scenario: Driving SAR or sigma-delta ADC inputs in motor control and power monitoring systems. IC Role / Device Role / Timing Role: Precision buffer and settling accelerator with 200ns 0.01% response to 2V step. Use Value: Enables reliable 12–14-bit conversion at ≥1MSPS without external settling circuitry or gain error drift. | Use Scenario: Measuring phase current in BLDC inverters using shunt resistors referenced to high-side bus voltage. IC Role / Device Role / Timing Role: High-CMRR differential amplifier with rail-to-rail input swing and zero-crossover linearity. Use Value: Delivers <±0.5% gain error over temperature without calibration, even with 48V bus common-mode. |
| Motor Rotary Encoders | Transimpedance Photodiode Amplifiers |
Use Scenario: Conditioning sine/cosine outputs from optical or magnetic encoders in servo drives. IC Role / Device Role / Timing Role: Low-noise, fast-settling dual amplifier for simultaneous A/B channel processing. Use Value: Maintains encoder resolution at >100k RPM by preserving signal integrity through 20MHz bandwidth and 5.5nV/√Hz noise floor. | Use Scenario: Converting nanoamp photocurrents from UV/IR sensors into measurable voltage signals. IC Role / Device Role / Timing Role: Low-input-bias-current (±0.5pA typ), low-noise transimpedance amplifier. Use Value: Achieves sub-picoamp sensitivity with <100µV offset drift over temperature-critical for gas detection and spectroscopy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture (0.02µV/°C drift), lower GBW (350kHz), higher IQ (17µA/ch) | Better long-term DC stability; unsuitable for >100kHz dynamic signal paths | Select when ultra-low drift dominates over speed and power |
| LMV358IDR | Lower cost, 1MHz GBW, 0.6V/μs slew, no zero-crossover, wider temp range (–40°C to +125°C) | Acceptable for basic buffering but lacks rail-to-rail linearity and EMI immunity | Select only for non-critical, low-frequency, cost-driven consumer applications |
Compared with OPA2323IDDFR, OPA2333AIDR trades 20MHz bandwidth and 33V/μs slew for nanovolt-level drift stability, while LMV358IDR sacrifices precision, speed, and EMI robustness for cost-making OPA2323IDDFR optimal for high-fidelity, high-speed industrial sensing.
Availability
OPA2323IDDFR is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management, and precision data acquisition systems requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for OPA2323IDDFR 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 signal chain solutions.
The OPAx323 family was designed specifically for high-speed, low-voltage, high-linearity applications-including ADC drivers, current sensing, and transducer interfaces-where zero-crossover performance and wide supply range are essential.
FAQ
What is the operating supply voltage range for the OPA2323IDDFR?
The OPA2323IDDFR operates from 1.7V to 5.5V single-supply (or ±0.85V to ±2.75V dual-supply). This range supports direct interfacing with 1.8V, 3.3V, and 5V logic domains and battery-powered systems without external regulators. The device maintains full rail-to-rail input/output swing and specified performance-including 20MHz GBW and 114dB CMRR-across this entire voltage range.
Does the OPA2323IDDFR require external compensation for unity-gain stability?
No, the OPA2323IDDFR is internally compensated for unity-gain stability and drives up to 150pF capacitive loads without sustained oscillations. This eliminates the need for external compensation networks in most applications, including direct ADC driving and capacitive sensor interfaces. Layout best practices-such as short traces and local 0.1µF ceramic bypassing-still apply to maintain stability under high-frequency EMI conditions.
How does the zero-crossover architecture of the OPA2323IDDFR improve performance in current-sensing applications?
The zero-crossover architecture in the OPA2323IDDFR eliminates input-stage crossover distortion during rail-to-rail input transitions, delivering consistent gain and linearity regardless of whether the input signal is near V– or V+. This enables identical precision in both high-side and low-side current sensing configurations-critical for bidirectional motor control where shunt voltage can swing across the full supply range without introducing gain nonlinearity or offset shifts.
What is the thermal pad connection requirement for the OPA2323IDDFR DDF package?
The exposed thermal pad on the OPA2323IDDFR's 8-pin SOT-23-THIN (DDF) package must be soldered and electrically connected to the V– (negative supply or ground) net. This connection provides a low-thermal-resistance path for heat dissipation and improves power handling capability. Failure to connect the pad may result in junction temperature exceeding 150°C under sustained 1.6mA/ch operation, especially in ambient temperatures above 85°C.
Can the OPA2323IDDFR drive heavy capacitive loads such as long PCB traces or ADC input capacitance?
Yes-the OPA2323IDDFR is characterized to drive up to 150pF capacitive loads without sustained oscillations, making it suitable for direct connection to typical SAR ADC inputs (often 10–30pF) and moderate-length PCB traces. For loads exceeding 150pF, a small series resistor (e.g., 10–50Ω) between the amplifier output and the capacitive node restores phase margin without degrading settling time significantly, as confirmed in TI's application notes for the OPAx323 family.
OPA2323IDDFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Chopper (Zero-Drift)
- Number of Circuits:
- 2
- Output Type:
- Single Ended, Rail-to-Rail
- Slew Rate:
- 33V/µs
- Gain Bandwidth Product:
- 20 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.5 pA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 1.6mA (x2 Channels)
- Current - Output / Channel:
- 110 mA
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
OPA2323IDDFR FAQ
1.How can I place an order for OPA2323IDDFR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2323IDDFR 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 OPA2323IDDFR reliable?
The price and inventory of OPA2323IDDFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2323IDDFR is usually 5 days.
3.What payment methods are accepted for OPA2323IDDFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2323IDDFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2323IDDFR?
OPA2323IDDFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2323IDDFR 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 OPA2323IDDFR?
For technical support, including OPA2323IDDFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2323IDDFR requirements.
6.How does Aetrix verify that OPA2323IDDFR is sourced from the original manufacturer or authorized distributors?
All OPA2323IDDFR 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 OPA2323IDDFR meets industry standards.
7.What is the process for return or replacement of OPA2323IDDFR?
All OPA2323IDDFR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2323IDDFR, 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 OPA2323IDDFR part is unused and in its original packaging.
Return procedure for OPA2323IDDFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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