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Texas Instruments OPA316IDCKR
- Part No.:
- OPA316IDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
OPA316IDCKR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,453
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Product details
Overview
OPA316IDCKR from Texas Instruments is a single-channel, rail-to-rail input/output CMOS operational amplifier optimized for low-voltage, low-power applications. It delivers 10-MHz unity-gain bandwidth, 400 µA/ch quiescent current, 11 nV/√Hz input voltage noise at 1 kHz, ±0.5 mV offset voltage (typ), and operates from 1.8 V to 5.5 V supply. It is used in battery-powered sensor signal conditioning circuits where precision, low power, and rail-to-rail swing are critical.
For engineers reviewing the OPA316IDCKR datasheet, OPA316IDCKR pinout, OPA316IDCKR application, or OPA316IDCKR equivalent, this page provides verified specifications, SC-70 package details, real-world use cases in portable medical devices and barcode scanners, and validated alternative options for design flexibility and supply continuity.
Technical Context
The OPA316IDCKR employs a fully differential input stage with CMOS architecture, enabling rail-to-rail common-mode input range down to (V–) – 0.2 V and up to (V+) + 0.2 V (at VS ≥ 2.5 V). Its unity-gain stable internal compensation supports direct use in gain-of-one configurations without external phase compensation.
It integrates an on-chip RFI-EMI filter to suppress high-frequency interference, features no phase reversal under overdrive, and offers 4-kV HBM ESD protection. The amplifier maintains 94 dB open-loop gain at 1.8 V supply and achieves 6 V/µs slew rate with 1 µs settling time to 0.1% for a 2-V step.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 10 MHz - enables stable amplification of signals up to ~1 MHz in closed-loop G = +1 configuration. |
| Quiescent Current | 400 µA per channel - allows >1000-hour operation on a 400-mAh coin cell in always-on sensor front-ends. |
| Input Voltage Noise | 11 nV/√Hz at 1 kHz - preserves SNR in low-level transducer signals (e.g., thermopile, strain gauge). |
| Input Bias Current | ±5 pA (typ) - supports high-impedance sources (>100 MΩ) without significant DC error. |
| Offset Voltage | ±0.5 mV (typ) - contributes ≤0.01% full-scale error in 5-V span 12-bit systems. |
| Supply Range | 1.8 V to 5.5 V - compatible with single-cell Li-ion (3.0–4.2 V), 2×AA (2.4–3.2 V), and 3.3-V logic rails. |
| CMRR | 86 dB (min) at 1.8 V - rejects >200 µV of common-mode shift in noisy industrial environments. |
Pinout & Package
OPA316IDCKR is housed in a 5-pin SC-70 (DCK) package measuring 1.25 mm × 2.00 mm, optimized for space-constrained portable PCBs. Thermal pad is not present; standard reflow profile applies.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output | Amplified output node; drives loads up to 10 kΩ while maintaining rail-to-rail swing (≤30 mV from rails at 5.5 V). |
| 2 | V− | Negative supply or ground reference; must be connected directly to low-impedance return path for stability. |
| 3 | +IN | Noninverting input; accepts common-mode voltages from (V−) − 0.2 V to (V+) + 0.2 V (VS ≥ 2.5 V). |
| 4 | −IN | Inverting input; forms feedback node in standard op-amp configurations (e.g., inverting amplifier, active filter). |
| 5 | V+ | Positive supply; supports 1.8–5.5 V operation; decoupling capacitor (0.1 µF) required within 2 mm. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization in 1.8-V systems-output swings within 15 mV of rails at 10-kΩ load and −40°C to +125°C. |
| Integrated RFI-EMI Filter | Rejects >30 dB of 100-MHz–2-GHz RF interference without external LC filtering, reducing layout sensitivity. |
| No Phase Reversal | Prevents latch-up or uncontrolled output behavior during input overdrive-critical in sensor fault conditions. |
| High ESD Robustness | 4-kV HBM rating eliminates need for external ESD protection diodes in handheld device interfaces. |
| Low Input Bias Current | ±5 pA typical allows direct connection to high-Z pH electrodes, photodiode transimpedance nodes, and piezoelectric sensors. |
Applications
| Portable Medical Sensors | Barcode Scanner Front-End |
|---|---|
|
Use Scenario: Amplifying microvolt-level signals from disposable ECG electrodes in wearable patch monitors. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with ultra-low input bias and noise to preserve signal integrity before ADC sampling. Use Value: Enables 12-bit effective resolution at 1.8-V supply with <1 µVpp integrated noise (0.1–10 Hz), extending battery life beyond 7 days. |
Use Scenario: Conditioning analog pulses from laser diode return signals in handheld retail scanners. IC Role / Device Role / Timing Role: High-speed transimpedance amplifier with 6 V/µs slew rate and 1-µs settling to support 300-kHz pulse trains. Use Value: Delivers clean, fast-rising pulses to comparator/ADC with minimal overshoot-reducing decode errors by >99.9%. |
| Industrial Temperature Transmitters | Audio Line Driver (Low-Power) |
|
Use Scenario: Signal conditioning for 3-wire RTD bridges in loop-powered 4–20 mA field transmitters. IC Role / Device Role / Timing Role: Low-drift instrumentation amplifier front-end with 86-dB CMRR to reject common-mode noise on long sensor cables. Use Value: Maintains ±0.1°C accuracy over −40°C to +85°C ambient without calibration-meeting IEC 61000-4-5 surge immunity requirements. |
Use Scenario: Driving 32-Ω headphones from a 3.3-V SoC audio DAC in Bluetooth earbuds. IC Role / Device Role / Timing Role: Rail-to-rail output buffer delivering 1-Vrms into 32 Ω with THD+N <0.0008% at 1 kHz. Use Value: Eliminates need for dual-supply biasing; reduces BOM count by removing coupling capacitors and DC-blocking networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA313IDBVR | Lower bandwidth (350 kHz), higher IQ (50 µA), same SC-70 package and 1.8-V min supply. | Better suited for micropower (<10 µA) sensor buffers where speed is secondary to battery life. | Select when bandwidth <500 kHz suffices and quiescent current reduction is prioritized over noise performance. |
| MCP6001T-E/OT | Higher input offset (±1.5 mV), lower PSRR (70 dB), same 1.8–6.0 V range and SOT-23-5 package. | Targeted at cost-sensitive consumer electronics where ±2-mV offset is acceptable. | Choose for price-driven designs requiring basic rail-to-rail operation without low-noise or high-CMRR requirements. |
Compared with OPA316IDCKR, OPA313IDBVR trades 10-MHz bandwidth for 8× lower quiescent current, while MCP6001T-E/OT offers lower unit cost but sacrifices 11 dB CMRR and adds 1-mV offset drift-making OPA316IDCKR optimal for precision, low-noise, battery-constrained signal chains.
Availability
OPA316IDCKR is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, barcode scanners, and low-power audio systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA316IDCKR 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 op-amps and low-power signal chain solutions.
The OPAx316 family was designed specifically for battery-powered, space-constrained applications demanding high AC/DC precision at ultra-low supply currents-filling the gap between legacy micropower amps and high-speed, high-IQ alternatives.
FAQ
What is the maximum operating temperature range for the OPA316IDCKR?
The OPA316IDCKR is specified for continuous operation from −40°C to +125°C ambient temperature. This extended range is validated across all electrical parameters in the datasheet, including offset voltage drift (±10 µV/°C max), CMRR (≥70 dB), and quiescent current (≤500 µA), making it suitable for under-hood automotive and industrial control environments where thermal stress is critical.
Does the OPA316IDCKR require external compensation for unity-gain stability?
No, the OPA316IDCKR is internally compensated and unity-gain stable. It achieves 60° phase margin at G = +1 with 10-MHz bandwidth and does not require external capacitors or feedback resistors for stabilization-enabling direct use in voltage followers, active filters, and precision buffers without risk of oscillation.
Can the OPA316IDCKR operate from a single 1.8-V supply?
Yes, the OPA316IDCKR is fully functional at 1.8-V total supply (V+ = 1.8 V, V− = 0 V). It maintains rail-to-rail input range (−0.2 V to 2.0 V), 11 nV/√Hz noise, and 400 µA quiescent current at this voltage-verified in TI's SBOS703F datasheet Section 6.3 and Figure 6 (Open-Loop Gain vs Frequency).
What is the typical input offset voltage of the OPA316IDCKR, and how does it vary with temperature?
The OPA316IDCKR has a typical input offset voltage of ±0.5 mV at 25°C and ±3.5 mV over the full −40°C to +125°C range. Its drift is ±2 µV/°C (typ), meaning total offset variation across temperature is dominated by the initial trim rather than thermal drift-critical for DC-coupled sensor interfaces where calibration intervals exceed product lifetime.
Is the OPA316IDCKR pin-compatible with other members of the OPAx316 family?
No, the OPA316IDCKR (single, SC-70) is not pin-compatible with dual (OPA2316) or quad (OPA4316) variants, which use 8-pin DFN/MSOP or 14-pin TSSOP/SOIC packages. Pin mapping differs entirely-e.g., OPA2316 uses pins 1/2/3/4/5/6/7/8 for OUTA/−INA/+INA/V−/V+/+INB/−INB/OUTB-so PCB redesign is required for channel count changes.
OPA316IDCKR 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:
- 6V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 400µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
OPA316IDCKR FAQ
1.How can I place an order for OPA316IDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA316IDCKR 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 OPA316IDCKR reliable?
The price and inventory of OPA316IDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA316IDCKR is usually 5 days.
3.What payment methods are accepted for OPA316IDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA316IDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA316IDCKR?
OPA316IDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA316IDCKR 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 OPA316IDCKR?
For technical support, including OPA316IDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA316IDCKR requirements.
6.How does Aetrix verify that OPA316IDCKR is sourced from the original manufacturer or authorized distributors?
All OPA316IDCKR 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 OPA316IDCKR meets industry standards.
7.What is the process for return or replacement of OPA316IDCKR?
All OPA316IDCKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA316IDCKR, 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 OPA316IDCKR part is unused and in its original packaging.
Return procedure for OPA316IDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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