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Texas Instruments OPA2347YEDR
- Part No.:
- OPA2347YEDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-XFBGA, DSBGA
- Datasheet:
-
OPA2347YEDR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,248
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Product details
Overview
OPA2347YEDR from Texas Instruments is a dual, micropower, rail-to-rail input/output operational amplifier in a WCSP-8 package. It delivers 350kHz bandwidth, 20µA quiescent current per channel, and operates from 2.3V to 5.5V single supply - ideal for battery-powered smoke detectors and 2-wire transmitters.
For engineers reviewing the OPA2347YEDR datasheet, OPA2347YEDR pinout, OPA2347YEDR application, or OPA2347YEDR equivalent, key selection criteria include ultra-low IQ, rail-to-rail I/O swing within 5mV of rails at light loads, –55°C to +125°C operation, and WCSP-8 footprint suitability for space-constrained portable designs.
Technical Context
The OPA2347YEDR uses a complementary differential input stage enabling rail-to-rail common-mode input range (V– – 0.2V to V+ + 0.2V) and a Class AB output stage delivering rail-to-rail output swing. Its unity-gain stable architecture supports direct driving of ADC inputs and capacitive loads up to 250pF.
It features photodiode-sensitive input bias current (±0.5pA typ. in darkness), low input voltage noise (60nV/√Hz at 1kHz), and high open-loop gain (100dB min at 5.5V). The WCSP-8 die-level package lacks molding compound or wire bonds, requiring specific land pattern and reflow profile per TI's SMT guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.3V to 5.5V single supply - enables direct integration into 3V and 5V battery systems without level-shifting. |
| Quiescent Current | 20µA per channel - extends battery life in always-on portable sensors and transmitters. |
| Gain-Bandwidth Product | 350kHz - supports signal conditioning for sub-100kHz sensor outputs and ADC front-ends. |
| Input Offset Voltage | 2mV max (25°C) - ensures <10mV error in 5V full-scale industrial analog sensing paths. |
| Output Swing | Within 5mV of rails (RL ≥ 100kΩ) - maximizes dynamic range in low-voltage data acquisition. |
| Input Common-Mode Range | V– – 0.2V to V+ + 0.2V - allows direct interfacing with sensors operating beyond supply rails. |
| Operating Temperature | –55°C to +125°C - qualified for automotive under-hood and industrial field-deployed equipment. |
Pinout & Package
OPA2347YEDR is housed in an 8-bump wafer chip-scale package (WCSP-8), measuring 1.008mm × 2.100mm, with non-solder-mask-defined (NSMD) copper pads. The package has no lead frame or wire bonds and requires controlled reflow per JEDEC Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V–) | Negative supply / ground reference | Common return for both amplifiers; must be low-impedance for PSRR integrity. |
| 2 (+In A) | Non-inverting input, Channel A | Accepts signals down to V– – 0.2V; sensitive to ambient light in WCSP variant. |
| 3 (–In A) | Inverting input, Channel A | Differential pair node; matched to +In A for offset minimization. |
| 4 (Out A) | Output, Channel A | Capable of sourcing/sinking ±17mA; swings within 5mV of rails into 100kΩ. |
| 5 (Out B) | Output, Channel B | Independent output; supports dual-path signal conditioning without crosstalk degradation. |
| 6 (–In B) | Inverting input, Channel B | Electrically isolated from Channel A; channel separation >128dB at 1kHz. |
| 7 (+In B) | Non-inverting input, Channel B | Same rail-to-rail input capability as Channel A; photodiode-sensitive in unshielded layouts. |
| 8 (V+) | Positive supply | Accepts 2.3V–5.5V; bypassing with 0.01µF ceramic capacitor required for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 2.3V–5.5V supply range - critical for maximizing SNR in low-voltage sensor interfaces. |
| 20µA per-channel quiescent current | Reduces total system standby power to <50µA for dual-channel configurations - essential for multi-year battery life. |
| 350kHz GBW with 0.17V/µs slew rate | Supports accurate amplification of 50kHz sensor waveforms while maintaining phase margin into capacitive loads. |
| –55°C to +125°C operation | Validated across extended industrial temperature range - eliminates derating concerns in harsh environments. |
| WCSP-8 footprint (1.008mm × 2.100mm) | Reduces PCB area by >70% vs SOIC-8 - enables miniaturized wearable and IoT endpoint designs. |
Applications
| Smoke Detectors | 2-Wire Transmitters |
|---|---|
Use Scenario: Amplifying ionization chamber current (pA–nA range) in battery-operated residential smoke alarms. IC Role / Device Role / Timing Role: Low-noise, ultra-low-IQ transimpedance amplifier with rail-to-rail output driving comparator threshold circuitry. Use Value: Enables >5-year battery life while maintaining sub-10mV offset drift over temperature and lifetime. | Use Scenario: Signal conditioning and loop-current modulation in 4–20mA industrial process transmitters. IC Role / Device Role / Timing Role: Dual op-amp implementing sensor excitation buffer and current-loop output stage. Use Value: Single-supply operation from 2.3V simplifies power architecture; rail-to-rail I/O accommodates wide sensor output ranges. |
| Battery-Powered Gas Sensors | Portable Medical Instrumentation |
Use Scenario: CO detector front-end amplifying electrochemical cell output under 3V coin-cell operation. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with photodiode-insensitive layout guidance for stable bias current. Use Value: 0.5pA input bias (dark) minimizes offset error in high-impedance gas sensor bridges. | Use Scenario: ECG electrode signal buffering and filtering in handheld patient monitors. IC Role / Device Role / Timing Role: Dual-channel instrumentation-grade amplifier providing gain, common-mode rejection, and ADC drive. Use Value: 128dB channel separation prevents crosstalk between differential lead pairs; 60nV/√Hz noise preserves microvolt-level biopotentials. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2348AIDR | Higher IQ (45µA/channel), same WCSP-8 option, improved CMRR (90dB min) | Better suited for noisy industrial environments where PSRR/CMRR dominate over battery life | Select when higher precision outweighs 2.25× IQ penalty; not drop-in due to different offset specs. |
| MCP6022-E/SN | Higher bandwidth (1MHz), 100µA IQ, SOIC-8 only, no WCSP option | Preferred for faster sensor sampling but incompatible with ultra-compact layouts requiring WCSP-8 | Choose when board space permits SOIC-8 and bandwidth >350kHz is required; no photodiode sensitivity concern. |
Compared with OPA2347YEDR, OPA2348AIDR trades ultra-low IQ for enhanced AC performance and CMRR, while MCP6022-E/SN offers higher speed at significantly higher power and larger footprint - making OPA2347YEDR optimal for size- and battery-limited WCSP designs.
Availability
OPA2347YEDR is available at Aetrix Electronics and suitable for smoke detectors, 2-wire transmitters, and portable medical instrumentation requiring stable component supply across extended temperature and long-life battery operation.
Supply support for OPA2347YEDR 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 chains.
The OPA2347YEDR belongs to TI's OPA347 family of micropower rail-to-rail op-amps, designed specifically for space- and energy-constrained applications including portable safety sensors and industrial loop-powered devices.
FAQ
What is the maximum ambient light exposure tolerance for OPA2347YEDR?
OPA2347YEDR exhibits photosensitivity due to its WCSP-8 package construction. Input bias current is specified in darkness (±0.5pA typ); under ambient fluorescent lighting, bias current may increase up to 100pA. Full shielding is recommended in light-exposed applications to maintain OPA2347YEDR's specified offset and drift performance.
Does OPA2347YEDR support true rail-to-rail input beyond the supply rails?
Yes - OPA2347YEDR's input common-mode range extends to V– – 0.2V and V+ + 0.2V, enabling operation with signals 200mV beyond either rail. However, absolute maximum input is limited to V– – 0.5V and V+ + 0.5V, and input current must be limited to ≤10mA to prevent damage or phase inversion.
Can OPA2347YEDR drive a 1000pF capacitive load in unity-gain configuration?
No - OPA2347YEDR is specified to directly drive up to 250pF in unity-gain. For 1000pF, stability requires external compensation: add a 10Ω–20Ω series resistor at the output (for pure capacitive loads) or a 4–6pF feedback capacitor (for resistive-capacitive loads), as documented in the OPA2347YEDR application notes.
What is the thermal resistance (θJA) of the OPA2347YEDR WCSP-8 package?
The OPA2347YEDR WCSP-8 package has a junction-to-ambient thermal resistance (θJA) of 250°C/W, per TI's SBOS167D datasheet. This value assumes standard JEDEC 2-layer board conditions; actual θJA improves with added copper pour and thermal vias beneath the package.
Is OPA2347YEDR pin-compatible with other OPA2347 variants like OPA2347EA or OPA2347UA?
No - OPA2347YEDR (WCSP-8) has a unique bump layout and footprint incompatible with SOT23-8 (OPA2347EA) or SOIC-8 (OPA2347UA). Pin functions match electrically (V+, Out A, –In A, +In A, +In B, –In B, Out B, V–), but mechanical placement, solder pad geometry, and reflow profile differ significantly.
OPA2347YEDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 8-XFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.17V/µs
- Gain Bandwidth Product:
- 350 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.5 pA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 20µA (x2 Channels)
- Current - Output / Channel:
- 17 mA
- Voltage - Supply Span (Min):
- 2.3 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DSBGA (1.9x0.9)
OPA2347YEDR FAQ
1.How can I place an order for OPA2347YEDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2347YEDR 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 OPA2347YEDR reliable?
The price and inventory of OPA2347YEDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2347YEDR is usually 5 days.
3.What payment methods are accepted for OPA2347YEDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2347YEDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2347YEDR?
OPA2347YEDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2347YEDR 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 OPA2347YEDR?
For technical support, including OPA2347YEDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2347YEDR requirements.
6.How does Aetrix verify that OPA2347YEDR is sourced from the original manufacturer or authorized distributors?
All OPA2347YEDR 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 OPA2347YEDR meets industry standards.
7.What is the process for return or replacement of OPA2347YEDR?
All OPA2347YEDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2347YEDR, 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 OPA2347YEDR part is unused and in its original packaging.
Return procedure for OPA2347YEDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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