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Texas Instruments OPA4990QPWRQ1
- Part No.:
- OPA4990QPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4990QPWRQ1.pdf
- Description:
- AUTOMOTIVE, QUAD, 40-V 1.1-MHZ L
- Quantity:
- Payment:
- Shipping:
Inventory:2,920
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Product details
Overview
OPA4990QPWRQ1 from Texas Instruments is a quad-channel, AEC-Q100 Grade 1 qualified automotive operational amplifier with rail-to-rail input and output, ±300 µV max input offset voltage, ±0.6 µV/°C offset drift, and 1.1 MHz gain-bandwidth product - designed for high-side current sensing and precision signal conditioning in HEV/EV battery-management systems.
For engineers reviewing the OPA4990QPWRQ1 datasheet, OPA4990QPWRQ1 pinout, OPA4990QPWRQ1 application, or OPA4990QPWRQ1 equivalent, key selection criteria include its 40 V supply capability, 120 µA per amplifier quiescent current, robust 78 dB EMIRR at 1.8 GHz, and MUX-friendly input stage enabling direct connection to multiplexed high-voltage sensor arrays without external clamping.
Technical Context
The OPA4990QPWRQ1 integrates a patented MUX-friendly front-end architecture that supports differential input voltages up to the full 40 V supply rail without diode clamping distortion, enabling seamless integration into high-voltage multiplexed data-acquisition systems. Its dual-input-stage design (PCH/NCH) ensures rail-to-rail common-mode range and eliminates phase reversal under overdrive.
It delivers 4.5 V/µs slew rate and 115 dB CMRR at 40 V supply, with thermal performance optimized for SOIC-14 (RθJA = 105.2 °C/W) and TSSOP-14 (RθJA = 134.7 °C/W) packages across –40°C to +125°C ambient operation - meeting stringent automotive transient immunity and long-term DC stability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 40 V (±1.35 V to ±20 V): supports single-supply 12 V/24 V/48 V automotive rails and dual-supply legacy control domains. |
| Input Offset Voltage | ±0.3 mV (max @ 25°C): enables sub-100 µV system-level offset budgets in shunt-based current sensing with 100 mΩ sense resistors. |
| Offset Drift | ±0.6 µV/°C (typ): ensures < ±1.2 mV total drift over –40°C to +125°C, critical for BMS temperature-compensated measurements. |
| Gain-Bandwidth Product | 1.1 MHz: supports closed-loop bandwidth > 100 kHz for fast-response motor control feedback loops with G = 10. |
| Quiescent Current | 120 µA per amplifier (typ): allows four-channel operation at < 500 µA total, suitable for always-on vehicle subsystems. |
| EMIRR | 78 dB at 1.8 GHz: rejects GSM/Bluetooth interference in infotainment-adjacent powertrain modules without added shielding. |
| Short-Circuit Current | ±80 mA: sustains fault conditions in high-side sensing without latch-up, supporting robust diagnostic coverage. |
Pinout & Package
OPA4990QPWRQ1 is packaged in a 14-pin TSSOP (PW) with 5.0 mm × 4.4 mm body size, rated for –40°C to +125°C operation and AEC-Q100 Grade 1 qualification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1+, IN2+, IN3+, IN4+ | Noninverting input (ch 1–4) | High-impedance (6 TΩ || 1 pF) inputs accept rail-to-rail common-mode signals; no external clamping required for MUX switching transients. |
| IN1−, IN2−, IN3−, IN4− | Inverting input (ch 1–4) | Differential input range extends to full 40 V supply; supports ±20 V differential signals without distortion or settling penalty. |
| OUT1–OUT4 | Amplifier output (ch 1–4) | Rail-to-rail swing (≤ 60 mV from rail @ 10 kΩ) enables full dynamic range utilization in low-voltage ADC interfaces. |
| V+ | Positive supply | Highest potential supply pin; accepts up to 42 V absolute max; decoupling required within 1 cm for EMI suppression. |
| V− | Negative supply | Lowest potential supply pin; supports true dual-supply operation or ground-referenced single-supply configurations. |
| NC (pins 11, 12, 13 unused in PW) | No-connect | Not internally bonded; must remain unconnected and unstubbed to avoid parasitic coupling in high-frequency layouts. |
Key Features
| Feature | Design Value |
|---|---|
| MUX-friendly input architecture | Eliminates back-to-back input diodes, enabling direct connection to analog multiplexers without settling-time degradation or signal distortion during channel switching. |
| Rail-to-rail input and output | Supports full-supply-range signal acquisition and drive into low-headroom ADCs or comparators without level-shifting circuitry. |
| 78 dB EMIRR at 1.8 GHz | Rejects cellular band interference in proximity to telematics modules, reducing need for ferrite beads or shielded enclosures in compact ECUs. |
| ±80 mA short-circuit current | Withstands sustained output faults in high-side current-sense configurations without thermal shutdown, enabling fail-safe diagnostics. |
| AEC-Q100 Grade 1 qualification | Validated for operation from –40°C to +125°C ambient, meeting automotive powertrain and safety-critical system reliability requirements. |
Applications
| HEV/EV Battery-Management System (BMS) | High-Side Current Sensing |
|---|---|
Use Scenario: Monitoring cell-string currents in 400 V traction battery packs using shunt resistors in high-side configuration. IC Role / Device Role / Timing Role: Precision current-to-voltage conversion with rail-to-rail input range accommodating common-mode voltages up to 400 V minus shunt drop. Use Value: ±0.3 mV offset enables ≤ 0.5% full-scale error at 100 mΩ shunt with 10-bit ADC, eliminating calibration per channel. | Use Scenario: Measuring motor phase currents in inverter gate-driver feedback loops where sensing occurs between IGBT/diode and DC bus. IC Role / Device Role / Timing Role: High-speed, low-drift amplification of millivolt-level shunt signals with 4.5 V/µs slew rate to preserve PWM edge fidelity. Use Value: 1.1 MHz GBW supports closed-loop bandwidth > 100 kHz, ensuring real-time current limiting without phase lag-induced instability. |
| On-Board Charger (OBC) Control | Infotainment Power Supply Monitoring |
Use Scenario: Regulating isolated DC-DC converter outputs in bidirectional OBCs by amplifying feedback signals across optocouplers. IC Role / Device Role / Timing Role: Low-noise (30 nV/√Hz), low-drift op amp providing stable reference scaling and error amplification in voltage control loops. Use Value: ±0.6 µV/°C drift minimizes thermal-induced regulation error across cabin temperature gradients, improving charging efficiency. | Use Scenario: Monitoring 5 V/3.3 V rail integrity in head-unit power domains subject to RF noise from Bluetooth/WiFi antennas. IC Role / Device Role / Timing Role: EMI-hardened buffer and comparator interface for supply supervision circuits operating near noisy digital subsystems. Use Value: 78 dB EMIRR at 1.8 GHz prevents false undervoltage lockout triggers during simultaneous cellular and WiFi transmission bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision automotive op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324QPWRQ1 | Lower GBW (1.2 MHz vs 1.1 MHz), higher offset (±3 mV), no rail-to-rail input, 1.5× higher IQ (180 µA/ch) | Limited to non-critical body electronics; unsuitable for BMS or OBC where rail-to-rail input or low offset is required | Select only for cost-sensitive, non-precision applications with < 5 V supplies and relaxed accuracy needs. |
| TSV914IQDT | Lower supply range (up to 16 V), lower EMIRR (65 dB), no AEC-Q100 Grade 1 rating, smaller TSSOP-14 footprint | Targeted for industrial sensors; not qualified for automotive powertrain or safety systems | Use only in non-automotive contexts or auxiliary infotainment functions outside ASIL zones. |
Compared with LM324QPWRQ1 and TSV914IQDT, OPA4990QPWRQ1 uniquely combines 40 V operation, rail-to-rail input/output, AEC-Q100 Grade 1 qualification, and 78 dB EMIRR - making it the sole option for high-voltage, high-integrity automotive signal conditioning where precision, robustness, and EMI resilience are co-required.
Availability
OPA4990QPWRQ1 is available at Aetrix Electronics and suitable for HEV/EV battery-management systems, on-board chargers, and high-side current sensing applications requiring stable component supply across extended automotive temperature ranges and long production lifecycles.
Supply support for OPA4990QPWRQ1 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 precision amplifiers and high-reliability power management ICs.
The OPAx990-Q1 product line was engineered specifically for high-voltage, high-EMI automotive signal chains - delivering rail-to-rail performance, ultra-low drift, and MUX-compatible inputs to replace discrete protection solutions in BMS, motor control, and powertrain sensing.
FAQ
What is the maximum supply voltage for OPA4990QPWRQ1?
The OPA4990QPWRQ1 supports an absolute maximum supply voltage of 42 V, with recommended operation from 2.7 V to 40 V. This 40 V rating enables direct use in 24 V and 48 V automotive subsystems, including battery monitoring and inverter control, without external voltage scaling. Exceeding 42 V risks permanent damage per the Absolute Maximum Ratings table.
Does OPA4990QPWRQ1 support rail-to-rail input and output simultaneously?
Yes, OPA4990QPWRQ1 supports rail-to-rail input common-mode range (VCM = V− − 0.2 V to V+ + 0.2 V) and rail-to-rail output swing (within 60 mV of either rail at 10 kΩ load). This dual rail-to-rail capability allows full utilization of ADC input ranges and eliminates level-shifting components in single-supply sensor interfaces - confirmed in Section 5.7 Electrical Characteristics and Figure 5-14/5-15.
Can OPA4990QPWRQ1 be used as a comparator?
Yes, OPA4990QPWRQ1 is explicitly designed for MUX-friendly comparator operation: its input stage accepts differential voltages up to the full supply rail without phase reversal or latch-up, and it functions reliably in open-loop mode. However, it lacks built-in hysteresis or push-pull output - external hysteresis resistors and output buffering are required for clean digital transitions in comparator applications.
What is the thermal resistance of OPA4990QPWRQ1 in TSSOP-14 package?
For the OPA4990QPWRQ1 in PW (TSSOP-14) package, the junction-to-ambient thermal resistance (RθJA) is 134.7 °C/W, and junction-to-board (RθJB) is 79.0 °C/W, per Section 5.6 Thermal Information. These values assume JEDEC-standard PCB layout (2-layer, 1 oz Cu, 1 in² copper pad); actual board-level performance depends on copper area, via count, and airflow.
Is OPA4990QPWRQ1 qualified for ASIL-B or ASIL-C systems?
OPA4990QPWRQ1 is AEC-Q100 Grade 1 qualified (–40°C to +125°C), which is a foundational reliability requirement for ASIL-B and ASIL-C applications, but it is not ISO 26262-certified as a safety element out of context. System-level ASIL compliance requires integration into a fault-tolerant architecture - e.g., redundancy, diagnostics, and safe-state handling - as defined in the customer's FMEDA and safety plan.
OPA4990QPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Standard
- Number of Circuits:
- 4
- Output Type:
- Single Ended, Rail-to-Rail
- Slew Rate:
- 4.5V/µs
- Gain Bandwidth Product:
- 1.1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 120µA (x4 Channels)
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 40 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
OPA4990QPWRQ1 FAQ
1.How can I place an order for OPA4990QPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4990QPWRQ1 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 OPA4990QPWRQ1 reliable?
The price and inventory of OPA4990QPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4990QPWRQ1 is usually 5 days.
3.What payment methods are accepted for OPA4990QPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4990QPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4990QPWRQ1?
OPA4990QPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4990QPWRQ1 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 OPA4990QPWRQ1?
For technical support, including OPA4990QPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4990QPWRQ1 requirements.
6.How does Aetrix verify that OPA4990QPWRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA4990QPWRQ1 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 OPA4990QPWRQ1 meets industry standards.
7.What is the process for return or replacement of OPA4990QPWRQ1?
All OPA4990QPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4990QPWRQ1, 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 OPA4990QPWRQ1 part is unused and in its original packaging.
Return procedure for OPA4990QPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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