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Texas Instruments OPA2313QDGKRQ1
- Part No.:
- OPA2313QDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2313QDGKRQ1.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,769
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Product details
Overview
OPA2313QDGKRQ1 from Texas Instruments is a dual-channel, AEC-Q100 Grade 1 qualified rail-to-rail input/output operational amplifier optimized for automotive cost-sensitive systems. It delivers 1 MHz gain-bandwidth, 50 µA/ch quiescent current, 25 nV/√Hz input voltage noise at 1 kHz, and 0.5 mV typical input offset voltage - enabling precision low-power signal conditioning in engine control units and battery management systems.
For engineers reviewing the OPA2313QDGKRQ1 datasheet, OPA2313QDGKRQ1 pinout, OPA2313QDGKRQ1 application, or OPA2313QDGKRQ1 equivalent, key selection criteria include its rail-to-rail operation down to 1.8 V, ±0.2 pA input bias current for high-impedance sensor interfaces, integrated RFI/EMI filtering, and unity-gain stability with up to 150 pF capacitive load.
Technical Context
The OPA2313QDGKRQ1 employs a complementary differential input stage (N- and P-channel pairs) enabling rail-to-rail common-mode input range extending 200 mV beyond both supply rails. Its Class AB output stage achieves full rail-to-rail swing - typically within 5 mV of either rail into 100 kΩ - while maintaining 0.5 V/µs slew rate and 1 MHz bandwidth at 50 µA/ch.
It features internal EMI/RFI filtering, no phase reversal under overdrive, and robust 4-kV HBM ESD protection. The device is specified across –40°C to +125°C and supports single-supply operation from 1.8 V to 5.5 V, with CMRR and PSRR maintained above 70 dB over temperature and supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interface with 1.8-V logic and 5-V analog subsystems without level-shifting. |
| Quiescent Current per Channel | 50 µA (typ) - allows continuous operation in always-on automotive modules with minimal battery drain. |
| Gain-Bandwidth Product | 1 MHz - supports stable closed-loop amplification of signals up to ~100 kHz at unity gain for sensor front-ends. |
| Input Offset Voltage | 0.5 mV (typ), 2.5 mV (max) - ensures <±0.5% error in 1-V full-scale low-side current sensing applications. |
| Input Bias Current | ±0.2 pA (typ) - permits use with >10 MΩ source impedances (e.g., capacitive humidity sensors, piezoelectric elements). |
| Input Voltage Noise Density | 25 nV/√Hz at 1 kHz - preserves SNR in low-frequency precision measurement paths such as thermistor or strain gauge interfaces. |
| Output Swing (vs Rails) | 5 mV (typ) into 100 kΩ - maximizes dynamic range when driving SAR ADCs with 1.8–5.5 V reference voltages. |
Pinout & Package
OPA2313QDGKRQ1 is packaged in an 8-pin VSSOP (DGK) with body size 3.00 mm × 3.00 mm, optimized for space-constrained automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Output, Channel 1 | Class AB rail-to-rail output capable of sourcing/sinking ±12 mA; drives ADC inputs or low-power transducers directly. |
| 2 (IN1–) | Inverting Input, Channel 1 | Differential input node with ±0.2 pA bias current; used in inverting amplifier or transimpedance configurations. |
| 3 (IN1+) | Noninverting Input, Channel 1 | High-impedance input referenced to system ground or bias network; supports rail-to-rail common-mode range. |
| 4 (V–) | Negative Supply / Ground | Reference node for single-supply operation; must be connected to lowest system potential (e.g., chassis ground). |
| 5 (IN2+) | Noninverting Input, Channel 2 | Independent second channel input; enables dual-sensor monitoring (e.g., differential pressure + temperature). |
| 6 (IN2–) | Inverting Input, Channel 2 | Second differential input pair; supports independent gain/offset calibration per channel in multi-signal systems. |
| 7 (OUT2) | Output, Channel 2 | Electrically isolated output stage; allows simultaneous signal conditioning for redundant or complementary sensors. |
| 8 (V+) | Positive Supply | Primary power rail; accepts 1.8–5.5 V with <85 µA total IQ across temperature - compatible with automotive LDO outputs. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive operation from –40°C to +125°C ambient, meeting reliability and stress-test requirements for ECU and infotainment modules. |
| Rail-to-rail input and output | Common-mode range extends 200 mV beyond V– and V+, and output swings to within 5 mV of rails - maximizes usable ADC input range in low-voltage systems. |
| Integrated RFI/EMI filter | Rejects >60 dB of RF interference up to 1 GHz (per EMIRR IN+ curve), eliminating need for external ferrite beads in noisy automotive environments. |
| Unity-gain stable with 150 pF load | Enables direct connection to long traces or capacitive loads (e.g., LCD bias networks, sensor cables) without external compensation components. |
| No phase reversal on overdrive | Prevents latch-up or erroneous control signals during transient overvoltage events (e.g., load dump, inductive kickback), enhancing system safety. |
Applications
| Infotainment Audio Preamp | Engine Control Unit Sensor Interface |
|---|---|
|
Use Scenario: Amplifying low-level microphone or tuner IF signals in head-unit audio processing chains. IC Role / Device Role / Timing Role: Dual-channel voltage amplifier providing gain, DC blocking, and rail-to-rail output swing into audio codec inputs. Use Value: 25 nV/√Hz noise density and 0.5 mV offset ensure clean audio capture without audible hiss or DC offset distortion at 1.8-V supply. |
Use Scenario: Conditioning signals from oxygen, knock, or manifold absolute pressure (MAP) sensors in real-time engine control loops. IC Role / Device Role / Timing Role: Precision buffer and signal conditioner converting high-impedance sensor outputs to low-impedance, rail-aligned signals for MCU ADC sampling. Use Value: ±0.2 pA input bias current prevents loading of ceramic/piezoelectric sensors; 1-MHz GBW supports fast transient response for knock detection. |
| Battery Management System Voltage Monitoring | Automotive Lighting Current Sensing |
|
Use Scenario: Measuring cell voltages in 12-V lead-acid or 48-V mild-hybrid battery packs with high accuracy and low power. IC Role / Device Role / Timing Role: High-impedance differential amplifier isolating individual cell measurements while rejecting common-mode noise from switching regulators. Use Value: 85 dB CMRR and 90 dB PSRR maintain <1 mV measurement error despite 12-V bus ripple and thermal drift across –40°C to +125°C. |
Use Scenario: Low-side current sensing for LED headlamp drivers and adaptive front-lighting systems (AFS). IC Role / Device Role / Timing Role: Precision current-sense amplifier with rail-to-rail input enabling accurate shunt voltage measurement near ground potential. Use Value: 0.5 mV offset and rail-to-rail input allow ±10-mV shunt drop measurement with <1% error - critical for PWM dimming linearity and thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7322QDRQ1 | Higher IQ (1.3 mA/ch), 20-MHz GBW, ±30 mA output drive - significantly higher power and speed. | Suitable for high-speed active filters or motor control feedback; not viable for ultra-low-power always-on monitoring. | Select LM7322QDRQ1 only when >10× bandwidth or >20× output current is required; OPA2313QDGKRQ1 remains optimal for sub-100-kHz, <100-µA/channel use cases. |
| TSV912IQDRQ1 | Lower IQ (85 µA/ch), 8-MHz GBW, 0.8 mV max offset - faster but less precise and higher power than OPA2313QDGKRQ1. | Better for medium-speed signal chains where offset drift matters less than settling time (e.g., window comparators). | Choose TSV912IQDRQ1 if 8-MHz bandwidth is mandatory and 0.8 mV offset is acceptable; OPA2313QDGKRQ1 provides superior dc precision and 50% lower IQ for battery-critical nodes. |
Compared with LM7322QDRQ1 and TSV912IQDRQ1, the OPA2313QDGKRQ1 uniquely balances sub-100-µA quiescent current, 1-MHz bandwidth, and 0.5-mV offset - making it the only AEC-Q100 dual op amp optimized for always-on, precision, low-voltage automotive sensing without performance trade-offs.
Availability
OPA2313QDGKRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, engine control unit (ECU), and battery management systems requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for OPA2313QDGKRQ1 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 automotive-grade product development and manufacturing excellence.
The OPA2313-Q1 belongs to TI's precision automotive op amp portfolio, designed specifically to meet AEC-Q100 Grade 1 requirements while delivering rail-to-rail performance, ultra-low power, and EMI-hardened operation for next-generation vehicle electronics.
FAQ
What is the operating temperature range for the OPA2313QDGKRQ1?
The OPA2313QDGKRQ1 is qualified per AEC-Q100 Grade 1, with guaranteed operation from –40°C to +125°C ambient temperature. All electrical specifications - including offset voltage, CMRR, and quiescent current - are characterized across this full range, making it suitable for under-hood and dashboard-mounted automotive applications where thermal extremes are routine. The device's 2 µV/°C offset drift ensures minimal drift-induced error over temperature.
Does the OPA2313QDGKRQ1 support single-supply operation?
Yes, the OPA2313QDGKRQ1 fully supports single-supply operation from 1.8 V to 5.5 V. Its rail-to-rail input extends 200 mV beyond both supply rails, and its rail-to-rail output swings to within 5 mV of V– and V+ into 100 kΩ. This enables direct interfacing with 1.8-V microcontrollers and 5-V ADC references without level shifters or dual supplies - a key advantage in space- and cost-constrained automotive modules.
What is the maximum capacitive load the OPA2313QDGKRQ1 can drive stably?
The OPA2313QDGKRQ1 is unity-gain stable with capacitive loads up to 150 pF, as confirmed by phase margin testing and typical characteristics (Figure 21). For larger loads (e.g., >1 nF), stability can be maintained using a 10–20 Ω series resistor at the output, though this introduces a small gain error. The device's internal compensation eliminates need for external components in most automotive sensor and ADC driver applications.
How does the OPA2313QDGKRQ1 handle electromagnetic interference (EMI)?
The OPA2313QDGKRQ1 integrates an internal RFI/EMI rejection filter, demonstrated by its EMIRR IN+ performance exceeding 60 dB up to 100 MHz (Figure 33). This hardens the device against conducted and radiated noise from ignition systems, DC-DC converters, and RF transceivers - reducing or eliminating the need for external EMI suppression components in automotive PCB designs.
Is the OPA2313QDGKRQ1 pin-compatible with other TI dual op amps in VSSOP-8?
No, the OPA2313QDGKRQ1 has a unique pinout optimized for dual-channel symmetry and layout efficiency: OUT1/IN1–/IN1+/V–/IN2+/IN2–/OUT2/V+. It is not pin-compatible with generic VSSOP-8 op amps like the TLV2372 or LMV358. Layout reuse requires verification against the official pin configuration diagram (Section 5 of SBOS823), as misalignment risks functional failure in production systems.
OPA2313QDGKRQ1 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:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 50µA (x2 Channels)
- Current - Output / Channel:
- 15 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA2313QDGKRQ1 FAQ
1.How can I place an order for OPA2313QDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2313QDGKRQ1 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 OPA2313QDGKRQ1 reliable?
The price and inventory of OPA2313QDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2313QDGKRQ1 is usually 5 days.
3.What payment methods are accepted for OPA2313QDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2313QDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2313QDGKRQ1?
OPA2313QDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2313QDGKRQ1 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 OPA2313QDGKRQ1?
For technical support, including OPA2313QDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2313QDGKRQ1 requirements.
6.How does Aetrix verify that OPA2313QDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA2313QDGKRQ1 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 OPA2313QDGKRQ1 meets industry standards.
7.What is the process for return or replacement of OPA2313QDGKRQ1?
All OPA2313QDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2313QDGKRQ1, 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 OPA2313QDGKRQ1 part is unused and in its original packaging.
Return procedure for OPA2313QDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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