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Texas Instruments OPA2374AIDG4
- Part No.:
- OPA2374AIDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2374AIDG4.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,798
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Product details
Overview
OPA2374AIDG4 from Texas Instruments is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for low-power, single-supply operation (2.3 V to 5.5 V). It delivers 6.5 MHz gain-bandwidth, 5 V/µs slew rate, and 585 µA quiescent current per channel, with input offset voltage ≤5 mV and input bias current ≤10 pA - enabling precision signal conditioning in battery-powered sensor interfaces and portable instrumentation.
For engineers reviewing the OPA2374AIDG4 datasheet, OPA2374AIDG4 pinout, OPA2374AIDG4 application, or OPA2374AIDG4 equivalent, key selection criteria include its rail-to-rail I/O swing (within 25 mV of rails), operation across –40°C to +125°C, and absence of shutdown functionality - distinguishing it from the pin-compatible OPA2373 family.
Technical Context
The OPA2374AIDG4 employs a complementary CMOS input stage enabling rail-to-rail input common-mode range from (V−) −0.2 V to (V+) + 0.2 V, with extended over-rail capability up to ±0.5 V. Its class AB output stage supports rail-to-rail output swing under light loads (≤100 kΩ), maintaining >94 dB open-loop gain at 25°C.
No internal enable/shutdown logic is present - unlike the OPA2373 - making OPA2374AIDG4 a fixed-function, always-on dual op amp. It is specified for single-supply use only (no split-rail requirement), with guaranteed performance from 2.3 V minimum supply and full functionality up to 125°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 6.5 MHz - enables stable unity-gain buffer or G = +10 amplification up to ~650 kHz without phase margin loss. |
| Slew rate | 5 V/µs - supports clean 2-V step response settling in 1 µs (0.1%) with 100 pF load, suitable for driving SAR ADC inputs. |
| Input offset voltage | ≤5 mV (max) - ensures ≤0.1% gain error in 5-V full-scale precision gain stages without trimming. |
| Quiescent current | 585–750 µA per channel - allows dual-channel operation on coin-cell or Li-ion systems with multi-year battery life. |
| Rail-to-rail I/O | Input: (V−) −0.2 V to (V+) + 0.2 V; Output: within 25 mV of rails (RL ≥100 kΩ) - maximizes dynamic range in 3.3-V or lower systems. |
| Operating temperature | –40°C to +125°C - qualified for automotive cabin, industrial PLC, and outdoor sensor node deployments. |
| Supply voltage range | 2.3 V to 5.5 V - compatible with single Li-ion (3.0–4.2 V), USB-powered (5 V), and 3.3-V logic domains without LDO. |
Pinout & Package
OPA2374AIDG4 is packaged in an 8-pin SOIC (D package) with 4.90 mm × 3.91 mm body size. The device has no shutdown pins and uses standard dual-op-amp pinout.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or feedback network; rail-to-rail capable, 220 Ω open-loop output impedance. |
| 2 | –IN A | Inverting input, channel A - high-impedance (10¹³ Ω || 3 pF), accepts signals down to V− −0.2 V. |
| 3 | +IN A | Noninverting input, channel A - same high-impedance interface; differential pair enables rail-to-rail common-mode range. |
| 4 | V− | Negative supply terminal - connects to ground or lowest system potential; must be stable and low-noise. |
| 5 | +IN B | Noninverting input, channel B - electrically isolated from channel A; supports independent dual-signal paths. |
| 6 | –IN B | Inverting input, channel B - identical specs to pin 2; enables differential or parallel processing configurations. |
| 7 | OUT B | Amplifier B output - fully independent output stage; can drive separate loads without crosstalk degradation. |
| 8 | V+ | Positive supply terminal - accepts 2.3–5.5 V; PSRR ≥128 dB at DC ensures immunity to supply ripple. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 3.3-V or lower supply rails - critical for maximizing SNR in low-voltage data acquisition. |
| 6.5-MHz GBW at 585 µA | Delivers 10× higher bandwidth-per-microamp than legacy low-power op amps - ideal for compact, energy-efficient designs. |
| Input bias current ≤10 pA | Minimizes voltage error in high-impedance sensor interfaces (e.g., pH electrodes, photodiode transimpedance). |
| Specified from –40°C to +125°C | Eliminates need for derating or thermal monitoring in harsh environments - validated across full industrial temperature range. |
| No internal shutdown circuitry | Removes enable timing uncertainty and leakage paths - simplifies power sequencing and improves long-term reliability. |
Applications
| Portable ECG Front-End | Battery Voltage Monitor |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in handheld medical devices. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end: one channel for differential sensing, second for reference buffering. Use Value: Rail-to-rail I/O preserves >99% of 3.0-V supply headroom; 10 pA IB avoids loading high-Z electrode interfaces. |
Use Scenario: Scaling and conditioning Li-ion cell voltage (2.5–4.2 V) for ADC input in wearables and IoT nodes. IC Role / Device Role / Timing Role: Precision unity-gain buffer isolating battery sense line from ADC input capacitance and noise. Use Value: 5 mV max VOS introduces <0.12% error at 4.2 V; 585 µA IQ extends battery life beyond 5 years in sleep-dominated operation. |
| Industrial Temperature Transmitter | Active Low-Pass Filter for Audio DAC |
Use Scenario: Conditioning 4–20 mA loop signals with RTD or thermocouple inputs in factory-floor sensors. IC Role / Device Role / Timing Role: Dual op amp implementing 2-pole anti-aliasing filter and loop-driver buffer in 24-V powered transmitter. Use Value: 6.5 MHz GBW supports sharp 100-Hz cutoff with minimal phase distortion; 125°C rating ensures field reliability. |
Use Scenario: Post-filtering PWM or sigma-delta DAC outputs in portable audio codecs and smart speakers. IC Role / Device Role / Timing Role: Second-order Sallen-Key low-pass filter (fc = 20 kHz) with unity-gain output stage. Use Value: 5 V/µs slew rate prevents slew-induced THD+N (<0.0013% at 1 kHz); rail-to-rail output matches 3.3-V DAC full scale. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, rail-to-rail, low-power op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2374AIDR | Same silicon, 8-pin SOIC tape-and-reel packaging (vs. tube for AIDG4); identical electrical specs and pinout. | No functional difference - selected for automated SMT assembly vs. manual/hand-solder prototyping. | Choose AIDR for volume production; AIDG4 for evaluation, small-batch, or replacement in legacy designs. |
| MCP6022-I/SN | Lower GBW (10 MHz), higher IQ (1 mA/channel), wider offset range (±3 mV typ), but lacks 125°C rating (only –40°C to +85°C). | Acceptable for commercial-grade portable gear but unsuitable for automotive or extended-temperature industrial use. | Select MCP6022-I/SN only if 10-MHz bandwidth is required and ambient temperature stays below 85°C. |
Compared with OPA2374AIDG4, OPA2374AIDR offers identical performance in tape-and-reel format for pick-and-place lines, while MCP6022-I/SN trades temperature range and ultra-low IQ for higher bandwidth - making OPA2374AIDG4 optimal for thermally demanding, battery-constrained applications.
Availability
OPA2374AIDG4 is available at Aetrix Electronics and suitable for portable medical devices, battery management systems, and industrial sensor transmitters requiring stable component supply and guaranteed long-term availability.
Supply support for OPA2374AIDG4 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 op amp design heritage and rigorous automotive/industrial qualification processes.
The OPAx374 family was engineered for precision, low-power, single-supply signal conditioning - targeting portable instrumentation, sensor front-ends, and space-constrained industrial controls where rail-to-rail operation and wide temperature range are mandatory.
FAQ
What is the maximum operating supply voltage for OPA2374AIDG4?
The absolute maximum supply voltage for OPA2374AIDG4 is 7 V, but the recommended operating range is 2.3 V to 5.5 V. Operation above 5.5 V risks permanent damage, while operation below 2.3 V may cause degraded AC performance or failure to meet datasheet specifications. Always refer to Section 7.3 (Recommended Operating Conditions) in the SBOS279F datasheet for validated limits.
Does OPA2374AIDG4 include a shutdown feature?
No, OPA2374AIDG4 does not include a shutdown feature. It is a fixed-function dual op amp with no enable/disable control pins. This distinguishes it from the pin-compatible OPA2373 family, which integrates shutdown logic. For designs requiring power gating, OPA2374AIDG4 must be powered down via external supply control - and its lack of shutdown simplifies layout and eliminates turn-on/turn-off timing concerns.
Can OPA2374AIDG4 drive capacitive loads, and what is the stability limit?
Yes, OPA2374AIDG4 can drive capacitive loads up to ~250 pF in unity-gain configuration while maintaining stability. Beyond this, phase margin degrades due to pole formation between output resistance (~220 Ω) and load capacitance. For larger loads, add a 10–20 Ω isolation resistor (RS) in series with the output - as shown in Figure 23 of the SBOS279F datasheet - to restore stability without compromising DC accuracy.
What is the input common-mode voltage range of OPA2374AIDG4?
The input common-mode voltage range of OPA2374AIDG4 extends from (V−) −0.2 V to (V+) + 0.2 V - enabling true rail-to-rail input operation. Inputs may briefly exceed this range by up to ±0.5 V without damage, provided input current is limited to ≤10 mA (e.g., using a series resistor). Within the extended range, parameters like CMRR and PSRR may degrade, so normal operation should stay within the specified range.
Is OPA2374AIDG4 pin-compatible with other devices in the OPAx374 family?
Yes, OPA2374AIDG4 shares identical pinout with all 8-pin SOIC variants in the OPAx374 family, including OPA374AID (single-channel) and OPA4374AID (quad-channel). However, channel count and internal routing differ: OPA2374AIDG4 uses pins 1–4 and 5–8 for two independent amplifiers, while OPA374AID uses only pins 1–5 and 8, leaving pins 6–7 unconnected. Always verify schematic symbol and footprint against the specific device's Pin Configuration diagram.
OPA2374AIDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 6.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.5 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 585µA (x2 Channels)
- Current - Output / Channel:
- 5 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2374AIDG4 FAQ
1.How can I place an order for OPA2374AIDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2374AIDG4 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 OPA2374AIDG4 reliable?
The price and inventory of OPA2374AIDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2374AIDG4 is usually 5 days.
3.What payment methods are accepted for OPA2374AIDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2374AIDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2374AIDG4?
OPA2374AIDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2374AIDG4 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 OPA2374AIDG4?
For technical support, including OPA2374AIDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2374AIDG4 requirements.
6.How does Aetrix verify that OPA2374AIDG4 is sourced from the original manufacturer or authorized distributors?
All OPA2374AIDG4 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 OPA2374AIDG4 meets industry standards.
7.What is the process for return or replacement of OPA2374AIDG4?
All OPA2374AIDG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2374AIDG4, 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 OPA2374AIDG4 part is unused and in its original packaging.
Return procedure for OPA2374AIDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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