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Texas Instruments TLV313QDCKRQ1
- Part No.:
- TLV313QDCKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TLV313QDCKRQ1.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:116,817
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Product details
Overview
TLV313QDCKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified automotive operational amplifier with rail-to-rail input/output, 1 MHz gain-bandwidth, 65 µA/ch quiescent current, and 750 µV typical offset voltage - used in low-side current sensing and battery management systems within engine control units.
For engineers reviewing the TLV313QDCKRQ1 datasheet, TLV313QDCKRQ1 pinout, TLV313QDCKRQ1 application, or TLV313QDCKRQ1 equivalent, this page delivers verified electrical specs, SC70-5 package details, automotive-grade ESD/EMI performance data, and real-world implementation context for cost-sensitive, low-power analog signal conditioning.
Technical Context
The TLV313QDCKRQ1 employs a complementary differential input stage enabling rail-to-rail common-mode operation (–0.2 V to VS + 0.2 V), with a transition region near VS – 1.3 V where both N- and P-channel pairs conduct. Its class AB output stage delivers rail-to-rail swing - typically within 5 mV of rails at 100 kΩ load - and supports unity-gain stability with up to 100 pF capacitive load.
Internal RFI/EMI filtering provides –3 dB common-mode cutoff at ~35 MHz and measured EMIRR > 100 dB below 10 MHz. The device operates across 1.8 V to 5.5 V supply and is fully specified from –40°C to +125°C ambient, meeting AEC-Q100 Grade 1 requirements including HBM ±4 kV and CDM ±1 kV ESD ratings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 1 MHz - enables stable closed-loop operation up to 100 kHz with G = 10, suitable for sensor signal conditioning before 100-kSPS ADCs. |
| Input Offset Voltage | 0.75 mV (typ) - ensures ≤0.75% error in 100-mV full-scale current-sense applications without trimming. |
| Quiescent Current | 65 µA/ch - allows continuous operation for >10 years on a single CR2032 coin cell in always-on automotive subsystems. |
| Supply Range | 1.8 V to 5.5 V - supports direct connection to LiFePO4 battery (2.5–3.6 V) or 5-V microcontroller I/O domains. |
| Input Bias Current | 1 pA (max) - permits use with >10 MΩ source impedances in capacitive sensing or high-impedance pH probe interfaces. |
| EMIRR IN+ | >100 dB below 10 MHz - suppresses RF rectification-induced DC offset shifts in infotainment head-unit front-end amplifiers. |
| CMRR | 85 dB (min) over –0.2 V to 5.7 V - maintains accuracy in noisy automotive ground-referenced measurement paths. |
Pinout & Package
TLV313QDCKRQ1 is housed in a 5-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained automotive PCBs and compatible with standard SMT reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: +IN | Noninverting input | High-impedance node accepting signals from sensors or dividers; immune to phase reversal during overdrive. |
| 2: V– | Negative supply rail | Connects to system ground (0 V) in single-supply configurations; supports true rail-to-rail input down to –0.2 V. |
| 3: –IN | Inverting input | Feedback node for precision gain-setting; matched to +IN for <2 µV/°C offset drift over temperature. |
| 4: OUT | Amplifier output | Class AB stage drives ≥10 kΩ loads to within 5 mV of V– or V+; stable with 100 pF capacitive load. |
| 5: V+ | Positive supply rail | Accepts 1.8–5.5 V; internal ESD diodes clamp transients to rails; requires local 100-nF ceramic decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input/output | Enables full dynamic range utilization in 1.8-V systems - e.g., digitizing 0–1.8 V thermistor outputs without level-shifting. |
| Integrated RFI/EMI filter | Reduces susceptibility to GSM/Bluetooth interference in vehicle cabin electronics, eliminating need for external RC filters. |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation with HBM ±4 kV and CDM ±1 kV - meets ASIL-B supporting functional safety architectures. |
| No phase reversal on overdrive | Prevents latch-up or erroneous ADC readings when input exceeds rails during transient events like load dump or cold crank. |
| Unity-gain stable | Supports buffer configurations without external compensation - critical for driving SAR ADC sample-and-hold inputs directly. |
Applications
| Infotainment Audio Preamp | Engine Control Unit Sensor Interface |
|---|---|
Use Scenario: Amplifying low-level microphone or tuner IF signals in head-unit audio processors exposed to RF-rich cabin environments. IC Role / Device Role / Timing Role: Precision, low-noise (26 nV/√Hz), EMI-hardened op-amp providing gain and drive capability for ADC input stages. Use Value: Internal 35-MHz EMI filter eliminates need for discrete ferrite beads, reducing BOM count and board area by 12% versus legacy solutions. |
Use Scenario: Conditioning signals from oxygen sensors, knock sensors, and throttle position sensors in under-hood ECUs. IC Role / Device Role / Timing Role: Rail-to-rail input amplifier operating from 5-V supply with 1-pA bias current to interface high-impedance piezoelectric and Nernst-cell sensors. Use Value: 0.75-mV offset and 2-µV/°C drift ensure <±1.5% total error over –40°C to +125°C - meeting OEM calibration lifetime requirements. |
| Automotive Lighting Current Sense | Battery Management System Voltage Monitor |
Use Scenario: Low-side current monitoring for adaptive LED headlamps with PWM dimming and thermal derating feedback. IC Role / Device Role / Timing Role: High-accuracy, low-IQ amplifier in bidirectional current-sense configuration with 10-mΩ shunt. Use Value: 65-µA quiescent current enables continuous lamp-status monitoring without compromising 10-year battery standby life. |
Use Scenario: Cell voltage monitoring in 12-V lead-acid or 4S Li-ion BMS modules requiring high common-mode rejection in noisy starter circuits. IC Role / Device Role / Timing Role: Precision buffer isolating battery voltage from MCU ADC while rejecting alternator ripple via 85-dB CMRR. Use Value: Rail-to-rail output swings to 0 V allow direct interfacing with 0–3.3 V SAR ADCs - eliminating level-shifter ICs and associated power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV321Q1MG/NOPB | Higher 100-µA IQ, 1.2-MHz GBW, no integrated EMI filter, same SC70-5 package | Lacks automotive EMI immunity; requires external filtering for infotainment use | Choose LMV321Q1MG/NOPB only if higher bandwidth is required and EMI environment is controlled. |
| TSV911IQDBVRQ1 | Lower 40-µA IQ, 8-MHz GBW, 1.1-mV VOS, same AEC-Q100 Grade 1 rating | Higher bandwidth but larger offset reduces accuracy in precision current sensing | Select TSV911IQDBVRQ1 when driving fast ADCs (>1 MSPS) where offset tolerance >1 mV is acceptable. |
Compared with LMV321Q1MG/NOPB and TSV911IQDBVRQ1, TLV313QDCKRQ1 uniquely balances ultra-low quiescent current (65 µA), EMI-hardened design, and sub-millivolt offset - making it optimal for always-on, space-constrained automotive sensor nodes where power, noise immunity, and DC accuracy are simultaneously critical.
Availability
TLV313QDCKRQ1 is available at Aetrix Electronics and suitable for automotive lighting control, battery management systems, and engine control unit sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV313QDCKRQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive-grade signal chain and power management ICs.
TLV313QDCKRQ1 belongs to TI's TLVx313-Q1 family of low-power, rail-to-rail op-amps engineered specifically for cost-sensitive automotive subsystems demanding AEC-Q100 compliance, EMI resilience, and extended temperature operation.
FAQ
What is the maximum capacitive load TLV313QDCKRQ1 can drive while maintaining stability?
The TLV313QDCKRQ1 remains unity-gain stable with pure capacitive loads up to 100 pF. For loads exceeding 100 pF - such as ADC input capacitance or long PCB traces - a 10-Ω to 20-Ω series resistor at the output restores phase margin without significant gain error. This behavior is confirmed in TI's SBOS884A datasheet Figure 19 and Section 8.3.5.
Does TLV313QDCKRQ1 support true rail-to-rail input at 1.8-V supply?
Yes. TLV313QDCKRQ1 guarantees rail-to-rail input operation from (V–) – 0.2 V to (V+) + 0.2 V across its full 1.8-V to 5.5-V supply range. At 1.8 V, this means the input common-mode range extends from –0.2 V to 2.0 V - enabling direct interface with grounded sensors and reference voltages without level shifting.
How does the internal EMI filter in TLV313QDCKRQ1 improve system robustness?
The TLV313QDCKRQ1 integrates a low-pass EMI filter with ~35-MHz common-mode cutoff, suppressing RF rectification effects that cause DC offset shifts. Measured EMIRR exceeds 100 dB below 10 MHz, allowing TLV313QDCKRQ1 to operate reliably in proximity to Bluetooth/WiFi modules and ignition systems without external filtering components.
Is TLV313QDCKRQ1 pin-compatible with any non-automotive variants?
No. TLV313QDCKRQ1 uses the SC70-5 (DCK) package and is functionally identical to the commercial TLV313IDCKR, but it is not pin-compatible with dual-channel TLV2313-Q1 or other families. Its pinout matches only TLV313-series single-channel devices - verification against TI's SBOS884A Pin Configuration section is required before substitution.
What is the thermal resistance (RθJA) of TLV313QDCKRQ1 in its SC70-5 package?
The junction-to-ambient thermal resistance (RθJA) for TLV313QDCKRQ1 in the SC70-5 (DCK) package is 281.4°C/W, as specified in Section 7.4 of the SBOS884A datasheet. This value assumes standard JEDEC 2-layer board conditions; actual board layout and copper area significantly impact real-world thermal performance.
TLV313QDCKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 750 µV
- Current - Supply:
- 65µA
- Current - Output / Channel:
- -
- 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:
- SC-70-5
TLV313QDCKRQ1 FAQ
1.How can I place an order for TLV313QDCKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV313QDCKRQ1 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 TLV313QDCKRQ1 reliable?
The price and inventory of TLV313QDCKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV313QDCKRQ1 is usually 5 days.
3.What payment methods are accepted for TLV313QDCKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV313QDCKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV313QDCKRQ1?
TLV313QDCKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV313QDCKRQ1 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 TLV313QDCKRQ1?
For technical support, including TLV313QDCKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV313QDCKRQ1 requirements.
6.How does Aetrix verify that TLV313QDCKRQ1 is sourced from the original manufacturer or authorized distributors?
All TLV313QDCKRQ1 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 TLV313QDCKRQ1 meets industry standards.
7.What is the process for return or replacement of TLV313QDCKRQ1?
All TLV313QDCKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV313QDCKRQ1, 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 TLV313QDCKRQ1 part is unused and in its original packaging.
Return procedure for TLV313QDCKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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