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Texas Instruments OPA2316IDGK
- Part No.:
- OPA2316IDGK
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2316IDGK.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:989
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Product details
Overview
OPA2316IDGK from Texas Instruments is a dual, rail-to-rail input/output, low-noise CMOS operational amplifier optimized for 1.8-V to 5.5-V single-supply operation. It delivers 10-MHz unity-gain bandwidth, 400-µA per channel quiescent current, and 11-nV/√Hz input voltage noise at 1 kHz - enabling precision signal conditioning in space-constrained, battery-powered systems such as portable medical sensors and barcode scanner front-ends.
For engineers reviewing the OPA2316IDGK datasheet, OPA2316IDGK pinout, OPA2316IDGK application, or OPA2316IDGK equivalent, this page provides verified electrical specifications, package-validated pin functions, real-world use cases, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The OPA2316IDGK implements a fully differential CMOS input stage with ±5-pA typical input bias current and ±0.5-mV maximum offset voltage, supporting high-impedance sensor interfaces up to MΩ source impedances. Its internal RFI-EMI filter and absence of phase reversal under overdrive ensure robustness in noisy industrial environments.
Designed for unity-gain stability with 60° phase margin and 6-V/µs slew rate, the device maintains linear settling (1 µs to 0.1%) into 100-pF loads while operating down to 1.8 V. The dual-channel architecture shares no internal coupling - channel separation exceeds 10 µV/V at DC - making it suitable for independent analog signal paths in multi-sensor systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 10 MHz - supports stable closed-loop gain ≥1 with full small-signal response up to audio and low-speed data acquisition frequencies. |
| Quiescent Current / Channel | 400 µA - enables >100-hour operation on a single CR2032 coin cell in always-on sensor nodes. |
| Input Voltage Noise Density | 11 nV/√Hz at 1 kHz - preserves SNR in 20-bit ADC front-ends with <10-kΩ source impedance. |
| Input Bias Current | ±5 pA - allows direct connection to piezoresistive bridges and pH electrodes without significant offset drift. |
| Rail-to-Rail I/O Swing | VOUT within 15 mV of rails at 1.8 V supply - maximizes dynamic range in low-voltage microcontroller-based systems. |
| Offset Voltage | ±0.5 mV (max) - eliminates need for external trimming in 12-bit precision applications. |
| Operating Temperature Range | –40°C to +125°C - qualified for under-hood automotive and industrial control environments. |
Pinout & Package
OPA2316IDGK is housed in an 8-pin MSOP (DGK) package measuring 3.0 mm × 3.0 mm × 1.05 mm, with exposed thermal pad connected to V– for enhanced power dissipation. Pin 1 is marked by a dot; pin numbering follows standard MSOP convention (counterclockwise from top-left corner).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 10 kΩ with rail-to-rail swing and 6-V/µs slew rate. |
| 2 | –IN A | Inverting input of Amplifier A - high-impedance node (1016 Ω || 2 pF) for feedback network connection. |
| 3 | +IN A | Noninverting input of Amplifier A - accepts common-mode signals from (V–) – 0.2 V to (V+) + 0.2 V at 5.5 V supply. |
| 4 | V– | Negative supply or ground reference - must be connected to PCB ground plane; thermal pad tied to this pin. |
| 5 | V+ | Positive supply - accepts 1.8 V to 5.5 V; decoupling capacitor required within 2 mm of pin. |
| 6 | +IN B | Noninverting input of Amplifier B - electrically isolated from Channel A; identical CMVR and impedance specs. |
| 7 | –IN B | Inverting input of Amplifier B - supports independent feedback configuration without crosstalk (DC channel separation >10 µV/V). |
| 8 | OUT B | Amplifier B output - functionally identical to OUT A; no shared internal nodes between channels. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 1.8-V supply range - supports 0–1.8-V sensor outputs without level-shifting circuitry. |
| Integrated RFI-EMI filter | Rejects >30-dB interference from 100-MHz cellular and Wi-Fi bands without external RC filtering. |
| No phase reversal on overdrive | Prevents latch-up or erroneous output transitions when input exceeds supply rails - critical for fault-tolerant sensor monitoring. |
| 4-kV HBM ESD protection | Meets IEC 61000-4-2 Level 2 requirements - eliminates need for external TVS diodes in handheld test equipment. |
| Low input bias current (±5 pA) | Reduces voltage error to <5 µV across 1-MΩ source impedance - essential for photodiode and thermopile amplification. |
Applications
| Portable Medical Sensors | Automotive Cabin Air Quality Monitors |
|---|---|
|
Use Scenario: Amplifying weak mV-level signals from electrochemical CO₂ and VOC sensors in wearable spirometers and smart inhalers. IC Role / Device Role / Timing Role: Dual-channel signal conditioner - Channel A buffers reference electrode, Channel B amplifies working electrode output with matched gain and offset. Use Value: 11-nV/√Hz noise floor and ±5-pA bias current preserve sub-ppm gas concentration resolution without calibration drift. |
Use Scenario: Signal conditioning for NDIR (non-dispersive infrared) CO and hydrocarbon detectors mounted behind vehicle dashboards. IC Role / Device Role / Timing Role: Dual op-amp front-end - one channel conditions thermopile detector output, the other drives temperature-compensation circuitry. Use Value: –40°C to +125°C operation ensures accuracy across cabin temperature extremes; rail-to-rail output drives 12-bit SAR ADC directly. |
| Barcode Scanner Imaging Front-End | Industrial IoT Pressure Transmitter |
|
Use Scenario: Amplifying fast-rise-time analog pulses from CMOS image sensors during laser line scanning in handheld retail scanners. IC Role / Device Role / Timing Role: High-speed dual buffer - Channel A conditions sync pulse, Channel B amplifies pixel data with 10-MHz bandwidth and 1-µs settling. Use Value: 6-V/µs slew rate and 10-MHz GBW support 100-kSPS line rates; low 400-µA IQ extends battery life in cordless models. |
Use Scenario: Conditioning millivolt outputs from silicon strain-gauge bridges in smart pressure transmitters deployed in oil-field SCADA systems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier core - configured as two-stage difference amplifier with matched OPA2316IDGK channels. Use Value: ±0.5-mV max VOS and <±2-µV/°C drift minimize temperature-induced zero-shift; 1.8-V operation enables direct interface with ultra-low-power MCUs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2313IDGKR | Lower bandwidth (1 MHz), higher noise (25 nV/√Hz), same 400-µA IQ and 1.8–5.5-V supply range. | Better suited for DC-coupled sensor interfaces where speed is secondary to ultra-low power; not recommended for audio or fast-settling applications. | Select when bandwidth demand is ≤1 MHz and cost sensitivity outweighs noise performance. |
| MCP6022-I/SN | Higher IQ (1 mA/ch), lower GBP (10 MHz same), wider offset range (±3.5 mV), no integrated RFI filter. | Requires external EMI filtering in noisy environments; higher supply current limits battery life in portable designs. | Choose only if legacy design compatibility with Microchip's MCP602x footprint is required and thermal headroom permits higher dissipation. |
Compared with OPA2316IDGK, OPA2313IDGKR trades bandwidth and noise for cost reduction in static-signal applications, while MCP6022-I/SN offers pin-compatible legacy support but demands additional layout effort for EMI mitigation and consumes 2.5× more supply current.
Availability
OPA2316IDGK is available at Aetrix Electronics and suitable for portable medical devices, automotive cabin sensors, and industrial IoT transmitters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2316IDGK 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 over 50 years of innovation in precision amplifiers and low-power signal chains.
The OPAx316 family was engineered to deliver optimal balance of bandwidth, noise, and quiescent power for battery-operated instrumentation - extending runtime without compromising signal fidelity in next-generation portable and automotive sensing platforms.
FAQ
What is the maximum supply voltage rating for OPA2316IDGK?
The absolute maximum supply voltage for OPA2316IDGK is 7 V across V+ to V–, but the recommended operating range is strictly 1.8 V to 5.5 V. Operation beyond 5.5 V risks permanent damage and invalidates parametric guarantees - including offset voltage, bandwidth, and output swing - even if initial functionality appears normal. Always refer to Section 6.1 of the SBOS703F datasheet for stress ratings.
Does OPA2316IDGK support true rail-to-rail input at 1.8-V supply?
Yes, OPA2316IDGK supports rail-to-rail input common-mode range at 1.8-V supply: VCM extends from (V–) – 0.2 V to (V+) across the full operating temperature range. This allows direct interfacing with 0-V referenced sensors and digital logic outputs without external level-shifting components - a key enabler for single-supply 1.8-V microcontroller systems.
Can OPA2316IDGK drive a 100-pF capacitive load stably?
Yes, OPA2316IDGK is unity-gain stable and characterized for 100-pF capacitive loads: its 60° phase margin and 1-µs 0.1% settling time are specified with CL = 100 pF. However, layout best practices - short traces, local 0.1-µF ceramic decoupling at V+, and ground-plane isolation - must be followed to maintain stability and avoid peaking in the frequency response.
Is thermal pad connection mandatory for OPA2316IDGK in DGK package?
Yes, the exposed thermal pad on the underside of the OPA2316IDGK DGK package must be soldered to a PCB copper pour connected to V–. This connection reduces junction-to-board thermal resistance to 31°C/W (per Section 6.5), preventing thermal shutdown and ensuring parametric compliance at +125°C ambient. Omitting pad connection degrades RθJB by >3× and voids guaranteed performance.
How does OPA2316IDGK compare to OPA2316S in shutdown capability?
OPA2316IDGK has no shutdown function - all pins are active at all times. In contrast, OPA2316S (e.g., OPA2316SIDGSR) integrates dual independent SHDN pins that reduce total quiescent current to 0.01 µA per device when asserted. For always-on applications like continuous sensor monitoring, OPA2316IDGK is preferred; for duty-cycled systems, OPA2316S provides superior power savings.
OPA2316IDGK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- 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 (x2 Channels)
- Current - Output / Channel:
- 50 mA
- 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:
- 8-VSSOP
OPA2316IDGK FAQ
1.How can I place an order for OPA2316IDGK through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2316IDGK 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 OPA2316IDGK reliable?
The price and inventory of OPA2316IDGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2316IDGK is usually 5 days.
3.What payment methods are accepted for OPA2316IDGK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2316IDGK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2316IDGK?
OPA2316IDGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2316IDGK 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 OPA2316IDGK?
For technical support, including OPA2316IDGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2316IDGK requirements.
6.How does Aetrix verify that OPA2316IDGK is sourced from the original manufacturer or authorized distributors?
All OPA2316IDGK 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 OPA2316IDGK meets industry standards.
7.What is the process for return or replacement of OPA2316IDGK?
All OPA2316IDGK units undergo pre-shipment inspection (PSI). If there is an issue with OPA2316IDGK, 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 OPA2316IDGK part is unused and in its original packaging.
Return procedure for OPA2316IDGK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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