My Inquiry
My Account
Texas Instruments OPA2347YEDT
- Part No.:
- OPA2347YEDT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-XFBGA, DSBGA
- Datasheet:
-
OPA2347YEDT.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,801
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA2347YEDT from Texas Instruments is a dual, micropower, rail-to-rail input/output operational amplifier in an 8-pin WCSP package. It delivers 350kHz gain-bandwidth, 20µA per-channel quiescent current, and operates from 2.3V to 5.5V single supply - enabling ultra-low-power sensor signal conditioning in space-constrained portable systems.
For engineers reviewing the OPA2347YEDT datasheet, OPA2347YEDT pinout, OPA2347YEDT application, or OPA2347YEDT equivalent, key selection criteria include its 5mV rail-to-rail output swing at light loads, ±0.5pA input bias current (dark condition), 70dB CMRR over full common-mode range, and WCSP-8 thermal resistance of 250°C/W - all critical for battery-powered smoke/CO detector front-ends.
Technical Context
The OPA2347YEDT uses a complementary differential input stage enabling rail-to-rail input operation with 200mV beyond rails, and a class AB output stage achieving rail-to-rail output swing within 5mV of V+ or V– under 100kΩ load. Its unity-gain stable architecture supports direct ADC driving without external compensation.
Designed for low-noise, low-drift DC-coupled applications, it features 12µVPP 0.1Hz–10Hz input voltage noise, 60nV/√Hz at 1kHz, and 0.7fA/√Hz input current noise - optimized for high-impedance sensor interfaces where photonic sensitivity must be mitigated via shielding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.3V to 5.5V single supply - enables direct integration into 3V coin-cell or 5V USB-powered systems without LDO overhead. |
| Quiescent Current (per channel) | 20µA typical - allows two amplifiers to operate continuously for >1 year on a 220mAh CR2032 battery. |
| Gain-Bandwidth Product | 350kHz - sufficient for buffering 12-bit SAR ADCs sampling up to 100ksps with <0.1% settling error. |
| Input Offset Voltage | 2mV max at +25°C - ensures ≤0.04% full-scale error in 50mV-range gas sensor outputs. |
| Output Voltage Swing | Within 5mV of rails (RL ≥ 100kΩ) - maximizes dynamic range in 3.3V systems with 12-bit ADCs requiring 0–3.3V input. |
| Input Bias Current | ±0.5pA typical (dark condition) - prevents >10mV error across 10GΩ thermistor or electrochemical sensor feedback networks. |
| Common-Mode Rejection | 70dB min (V– to V+ – 1.7V) - maintains accuracy when amplifying low-level signals riding on noisy power rails. |
Pinout & Package
OPA2347YEDT is housed in an 8-ball, 1.008mm × 2.100mm WCSP (Wafer Chip Scale Package) with bump-side-down mounting. The package has no lead frame or molding compound, requiring NSMD land pattern with 275µm × 275µm solder pads and ≤125µm stencil thickness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Top-left, bump side down) | V+ | Positive supply rail - must be bypassed with 0.01µF ceramic capacitor placed ≤2mm from ball. |
| 2 | Out B | Inverting amplifier output B - capable of sourcing/sinking ±17mA; swing limited by load impedance and supply. |
| 3 | –In B | Inverting input B - high-impedance node; sensitive to ambient light; requires shielding in CO/smoke detector PCB layout. |
| 4 | +In B | Non-inverting input B - same photonic sensitivity as Pin 3; bias current increases up to 100pA under fluorescent lighting. |
| 5 | Out A | Amplifier A output - electrically isolated from Out B; shares V+ and V– rails; supports independent gain configurations. |
| 6 | –In A | Inverting input A - matched to Pin 3; used for differential sensing or active filtering in dual-channel signal chains. |
| 7 | +In A | Non-inverting input A - referenced to system ground or bias voltage; enables rail-to-rail common-mode input up to (V–) – 0.2V. |
| 8 (Top-right) | V– | Negative supply rail (typically GND) - return path for both amplifiers; requires low-inductance connection to ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Input extends 200mV beyond rails; output swings within 5mV of V+ or V– at 100kΩ - preserves full ADC input range in 2.3V–5.5V systems. |
| Ultra-low quiescent current | 20µA per channel - reduces total system standby power to <50µA for dual-sensor monitoring (e.g., smoke + CO). |
| Photonic sensitivity mitigation | Specified Ib = ±0.5pA only in dark condition; requires metal can or conformal coating in ambient-light environments to prevent 100pA Ib shift. |
| Unity-gain stability | No external compensation required - simplifies layout for sensor buffer stages driving 100pF ADC inputs directly. |
| Wide temperature range | –55°C to +125°C operation - qualified for automotive cabin and industrial fire alarm enclosures without derating. |
Applications
| Smoke Detector Front-End | CO Gas Sensor Amplifier |
|---|---|
|
Use Scenario: Amplifying picoamp-level ionization current from smoke chamber electrodes in battery-powered residential alarms. IC Role / Device Role / Timing Role: Dual-channel transimpedance amplifier - one channel for reference chamber, one for sensing chamber - rejecting common-mode contamination. Use Value: 20µA per-channel IQ enables >2-year battery life; rail-to-rail output drives 12-bit ADC across full 0–3.3V range without level-shifting. |
Use Scenario: Conditioning low-voltage output (1–100mV) from electrochemical CO sensors in portable safety monitors. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with 2mV VOS max - rejects thermally induced offset drift in unregulated 3V systems. Use Value: ±0.5pA Ib (dark) prevents >10mV error across 10GΩ sensor feedback; 70dB CMRR suppresses EMI from display backlight drivers. |
| 2-Wire Loop-Powered Transmitter | Portable Medical Sensor Interface |
|
Use Scenario: Signal conditioning stage in 4–20mA loop-powered pressure/temperature transmitters with HART modulation. IC Role / Device Role / Timing Role: Low-power instrumentation amplifier front-end - provides gain and rail-to-rail output swing into loop driver stage. Use Value: 350kHz GBW supports HART FSK (1200/2200Hz) without phase lag; 2.3V min supply allows operation during brownout conditions. |
Use Scenario: Biopotential signal amplification (ECG, EMG) in handheld diagnostic devices powered by single Li-ion cell. IC Role / Device Role / Timing Role: First-stage amplifier with 12µVPP 0.1Hz–10Hz noise - preserves microvolt-level signal integrity before digitization. Use Value: 60nV/√Hz input voltage noise at 1kHz minimizes SNR degradation; WCSP-8 footprint saves >60% board area vs SO-8 alternative. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2348AIDR | Higher IQ (45µA/channel), same WCSP-8 package, 1MHz GBW, but no photonic sensitivity specification. | Better for higher-speed sensor interfaces (>200ksps); unsuitable where light-induced Ib shift must be avoided. | Select OPA2348AIDR only if bandwidth >350kHz is required and optical shielding cannot be implemented. |
| MCP6022-E/SN | SO-8 package, 100µA IQ, 1MHz GBW, 2.7V–6V supply, no WCSP option or photonic Ib data. | Preferred for prototyping with through-hole test fixtures; incompatible with space-constrained WCSP layouts. | Choose MCP6022-E/SN for lab validation or cost-sensitive non-portable designs where 100µA IQ is acceptable. |
Compared with OPA2347YEDT, OPA2348AIDR trades 2.5× higher supply current for 2.9× bandwidth and relaxed layout constraints, while MCP6022-E/SN sacrifices miniaturization and ultra-low power for broader voltage range and mature SO-8 availability - making OPA2347YEDT uniquely suited for production-volume, light-sensitive, space-constrained safety sensors.
Availability
OPA2347YEDT is available at Aetrix Electronics and suitable for portable equipment, battery-powered equipment, and 2-wire transmitters requiring stable component supply across automotive, industrial, and medical safety certifications.
Supply support for OPA2347YEDT 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 amplifiers and low-power signal chain solutions.
The OPA2347YEDT belongs to TI's OPA347 family of micropower rail-to-rail op amps, engineered specifically for ultra-low-power, space-constrained sensor interface applications in safety-critical portable electronics.
FAQ
What is the maximum operating temperature range for the OPA2347YEDT?
The OPA2347YEDT is specified for continuous operation from –55°C to +125°C, with absolute maximum ratings extending to –65°C to +150°C for storage and junction temperature. This makes OPA2347YEDT suitable for under-hood automotive or industrial enclosure deployments where ambient temperatures exceed 85°C.
Does the OPA2347YEDT require external compensation for unity-gain stability?
No, the OPA2347YEDT is internally compensated for unity-gain stability and drives capacitive loads up to 250pF directly. For loads exceeding this, a 10Ω–20Ω series resistor at the output improves phase margin without affecting DC accuracy - a capability confirmed in the OPA2347YEDT datasheet Figure 6.
How does ambient light affect the OPA2347YEDT's input bias current?
Ambient light increases the OPA2347YEDT's input bias current - specified as ±0.5pA only in darkness. Under fluorescent lighting, Ib can rise to ~100pA, potentially causing offset errors in high-impedance sensor circuits. Full optical shielding or conformal coating is required for reliable OPA2347YEDT performance in lit environments.
What is the recommended PCB land pattern for the OPA2347YEDT WCSP-8 package?
The OPA2347YEDT requires a non-solder-mask-defined (NSMD) land pattern with 275µm × 275µm copper pads, 125µm stencil thickness, and trace widths ≤75µm inside the solder mask opening. This ensures proper stand-off height and thermal reliability - details are specified in TI's SBOS167D datasheet Table II.
Can the OPA2347YEDT drive a 12-bit SAR ADC such as the ADS7822?
Yes, the OPA2347YEDT is explicitly optimized for driving medium-speed SAR ADCs like the ADS7822. Its 350kHz GBW, 0.17V/µs slew rate, and 21µs 0.1% settling time meet timing requirements for 100ksps sampling, as validated in TI's Application Note SBOS167D Figure 8 and Figure 9 using OPA2347YEDT.
OPA2347YEDT 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)
OPA2347YEDT FAQ
1.How can I place an order for OPA2347YEDT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2347YEDT 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 OPA2347YEDT reliable?
The price and inventory of OPA2347YEDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2347YEDT is usually 5 days.
3.What payment methods are accepted for OPA2347YEDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2347YEDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2347YEDT?
OPA2347YEDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2347YEDT 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 OPA2347YEDT?
For technical support, including OPA2347YEDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2347YEDT requirements.
6.How does Aetrix verify that OPA2347YEDT is sourced from the original manufacturer or authorized distributors?
All OPA2347YEDT 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 OPA2347YEDT meets industry standards.
7.What is the process for return or replacement of OPA2347YEDT?
All OPA2347YEDT units undergo pre-shipment inspection (PSI). If there is an issue with OPA2347YEDT, 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 OPA2347YEDT part is unused and in its original packaging.
Return procedure for OPA2347YEDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2347YEDT Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
