My Inquiry
My Account
Texas Instruments OPA2325ID
- Part No.:
- OPA2325ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2325ID.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,691
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA2325ID from Texas Instruments is a dual-channel, precision rail-to-rail input/output (RRIO) CMOS operational amplifier optimized for low-noise, wide bandwidth, and low-power operation in precision analog signal chains. It delivers 10 MHz gain bandwidth, 5 V/µs slew rate, 9 nV/√Hz input voltage noise at 10 kHz, 150 µV max input offset voltage, and operates from 2.2 V to 5.5 V single supply - making it ideal for SAR ADC input buffering in battery-powered test equipment and PLC analog I/O modules.
For engineers reviewing the OPA2325ID datasheet, OPA2325ID pinout, OPA2325ID application, or OPA2325ID equivalent, key selection criteria include zero-crossover distortion performance across full rail-to-rail common-mode range, ±100 mV beyond rails, guaranteed 114 dB CMRR at 25°C, and validated 0.01% settling in 1 µs - critical for high-resolution data acquisition systems requiring minimal code errors and distortion-free signal conditioning.
Technical Context
The OPA2325ID employs an e-trim™ process for factory calibration of input offset voltage and integrates an internal charge pump to power a single linear differential input pair - eliminating crossover distortion inherent in conventional complementary CMOS input stages. This architecture enables consistent 114 dB CMRR across the entire input common-mode range from (V–) – 0.1 V to (V+) + 0.1 V.
Its unity-gain stability, 10 MHz GBP, and 5 V/µs slew rate support fast settling into capacitive loads up to 15 pF without phase reversal, while 650 µA per channel quiescent current and 2.2 V minimum supply enable direct battery operation in portable instrumentation and industrial sensors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 10 MHz - supports stable closed-loop gain ≥1 with ≤1% gain error up to 100 kHz for anti-aliasing filter design. |
| Slew Rate | 5 V/µs - ensures <1 µs 0.01% settling for 2-V step inputs, critical for driving 16-bit+ SAR ADCs without missing codes. |
| Input Offset Voltage | 150 µV (max) - limits DC error to <0.0024% of 6.5 V full-scale, enabling accurate DC-coupled sensor signal conditioning. |
| CMRR | 114 dB (typ) - rejects >500 kV/V common-mode interference, essential for high-Z transducer interfaces in noisy industrial environments. |
| Input Voltage Noise | 9 nV/√Hz at 10 kHz - contributes <1.8 µV RMS noise in 100 kHz bandwidth, preserving SNR in precision measurement front-ends. |
| Supply Range | 2.2 V to 5.5 V single supply - allows direct connection to Li-ion (3.0–4.2 V), 3.3 V logic, or regulated 5 V rails without LDO overhead. |
| Quiescent Current | 650 µA per channel - enables dual-amplifier operation at <1.3 mA total, suitable for always-on battery-powered monitoring nodes. |
Pinout & Package
OPA2325ID is packaged in an 8-pin SOIC (D package) with nominal body size 4.90 mm × 3.91 mm, rated for –40°C to +125°C operation and compatible with standard surface-mount reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT A | Output channel A | Capable of rail-to-rail swing within 10 mV of V– or V+, drives 10 kΩ loads with <0.01% settling in 1 µs. |
| 2: –IN A | Inverting input channel A | High-impedance CMOS node (0.2 pA bias current); accepts signals from (V–) – 0.1 V to (V+) + 0.1 V without distortion. |
| 3: +IN A | Noninverting input channel A | Zero-crossover linear input stage eliminates offset discontinuity at rail transitions - critical for DC accuracy near supply rails. |
| 4: V– | Negative supply | Ground reference in single-supply configurations; must be decoupled with 0.1 µF ceramic capacitor near pin. |
| 5: +IN B | Noninverting input channel B | Independent second amplifier input; identical specs to channel A - enables dual-path signal conditioning or differential drive. |
| 6: –IN B | Inverting input channel B | Matches channel A performance; supports independent gain/offset adjustment per channel in multi-sensor systems. |
| 7: OUT B | Output channel B | Full rail-to-rail output capability; isolated from OUT A - prevents crosstalk in dual-buffer or active-filter applications. |
| 8: V+ | Positive supply | Accepts 2.2–5.5 V; PSRR >100 dB up to 100 Hz ensures immunity to digital supply noise in mixed-signal PCB layouts. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-crossover input stage | Eliminates offset voltage discontinuity across rail-to-rail input range - preserves linearity and CMRR when conditioning signals near V– or V+. |
| e-trim™ offset calibration | Factory-trimmed to ≤150 µV max offset - reduces system-level calibration burden and improves long-term DC stability in unattended equipment. |
| Rail-to-rail input/output | Input range extends 100 mV beyond both supply rails; output swings within 10 mV of rails - maximizes dynamic range in low-voltage systems. |
| Low 1/f noise | 2.8 µVPP (0.1–10 Hz) - minimizes drift-induced errors in slow-sampling applications like temperature or pressure sensing. |
| High PSRR & CMRR | 114 dB CMRR and >100 dB PSRR at DC - rejects power supply ripple and ground bounce in shared-rail industrial control modules. |
Applications
| High-Z Sensor Signal Conditioning | Transimpedance Amplifier (TIA) |
|---|---|
|
Use Scenario: Amplifying microamp-level output from photodiodes or piezoelectric sensors in portable gas analyzers. IC Role / Device Role / Timing Role: Precision DC-coupled buffer with ultra-low input bias current (0.2 pA) and 150 µV max offset to preserve weak signal integrity. Use Value: Enables sub-100 nA current resolution without external offset trimming, reducing BOM count and calibration time. |
Use Scenario: Converting photocurrent from optical encoders into voltage for 16-bit ADC sampling in motor feedback loops. IC Role / Device Role / Timing Role: Low-noise, unity-gain stable TIA core with 9 nV/√Hz noise density and 10 MHz bandwidth for fast position updates. Use Value: Supports 100 kSPS sampling with <0.01% settling, eliminating aperture jitter-induced position error in servo drives. |
| PLC Analog Input Module | SAR ADC Driver |
|
Use Scenario: Buffering 4–20 mA loop signals and thermocouple outputs in industrial programmable logic controllers. IC Role / Device Role / Timing Role: Dual-channel RRIO op-amp providing simultaneous signal conditioning for multiple sensor inputs with shared supply. Use Value: Rail-to-rail operation enables full utilization of 3.3 V ADC reference; 114 dB CMRR suppresses 50/60 Hz mains interference. |
Use Scenario: Driving the input of 18-bit successive-approximation register (SAR) ADCs in precision data loggers. IC Role / Device Role / Timing Role: Low-distortion, fast-settling driver with zero-crossover architecture to prevent code missing during ADC acquisition windows. Use Value: 1 µs 0.01% settling ensures complete settling before ADC sample-and-hold closes - maintaining ENOB >16.5 bits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2182IDR | Lower offset (±4 µV typ), higher cost, 5.7 MHz GBP, 2.5 V/µs slew rate | Better DC accuracy but slower settling - suited for high-precision DC measurements, not fast SAR ADC driving | Select OPA2182IDR only when offset drift (<0.004 µV/°C) and long-term stability outweigh speed requirements. |
| AD8605ARMZ | Higher noise (12 nV/√Hz), no zero-crossover architecture, 10 MHz GBP, 5 V/µs slew rate | Lacks rail-to-rail linearity near supply rails - introduces distortion in full-scale sensor signals | Choose AD8605ARMZ only if cost sensitivity dominates and input common-mode stays >0.5 V from rails. |
Compared with OPA2182IDR and AD8605ARMZ, the OPA2325ID uniquely balances 10 MHz bandwidth, zero-crossover linearity, and 650 µA quiescent current - making it the optimal choice for battery-powered, high-speed precision signal chains where both AC fidelity and DC accuracy are required.
Availability
OPA2325ID is available at Aetrix Electronics and suitable for high-Z sensor signal conditioning, PLC analog I/O modules, SAR ADC driver circuits, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2325ID 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 signal-chain solutions.
The OPA2325ID belongs to TI's e-trim™ precision op-amp family, engineered specifically for high-resolution data acquisition systems demanding low noise, zero-crossover linearity, and rail-to-rail operation in space- and power-constrained designs.
FAQ
What is the maximum operating temperature for the OPA2325ID?
The OPA2325ID is specified for continuous operation from –40°C to +125°C ambient temperature, with junction temperature limited to 150°C under recommended conditions. Its thermal resistance (RθJA = 119°C/W in SOIC) supports reliable performance in industrial control cabinets and automotive under-hood environments when properly heatsinked or airflow-cooled.
Does the OPA2325ID require external compensation for unity-gain stability?
No, the OPA2325ID is internally compensated and unity-gain stable across its full supply range (2.2 V to 5.5 V). It drives capacitive loads up to 15 pF without oscillation or peaking, as verified in Figure 27 of the SBOS637A datasheet - eliminating need for external compensation networks in most buffer and gain-stage applications.
How does the zero-crossover architecture improve performance over standard RRIO op-amps?
The OPA2325ID uses an internal charge pump to power a single linear input differential pair, avoiding the offset discontinuity and CMRR degradation seen at rail transitions in conventional complementary-input CMOS op-amps. This delivers flat 114 dB CMRR across the full (V–) – 0.1 V to (V+) + 0.1 V range - critical for accurate DC measurements near supply rails.
Can the OPA2325ID operate from a 1.8-V supply?
No - the OPA2325ID has a minimum specified supply voltage of 2.2 V (single supply) or ±1.1 V (dual supply). Operation below 2.2 V is outside datasheet specifications and may result in degraded CMRR, reduced output swing, or failure to meet offset or bandwidth guarantees. For 1.8-V systems, consider the OPA2313 or TLV9062 families.
Is the OPA2325ID pin-compatible with other devices in the OPAx325 family?
Yes - all OPAx325 variants (OPA1325, OPA2325, OPA4325) share identical 8-pin SOIC (D) and VSSOP (DGK) pinouts. The OPA2325ID pin mapping matches OPA2325DR, OPA2325DGKR, and OPA2325IDR exactly, enabling drop-in replacement across dual-channel variants without layout changes.
OPA2325ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 40 µV
- Current - Supply:
- 650µA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2325ID FAQ
1.How can I place an order for OPA2325ID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2325ID 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 OPA2325ID reliable?
The price and inventory of OPA2325ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2325ID is usually 5 days.
3.What payment methods are accepted for OPA2325ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2325ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2325ID?
OPA2325ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2325ID 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 OPA2325ID?
For technical support, including OPA2325ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2325ID requirements.
6.How does Aetrix verify that OPA2325ID is sourced from the original manufacturer or authorized distributors?
All OPA2325ID 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 OPA2325ID meets industry standards.
7.What is the process for return or replacement of OPA2325ID?
All OPA2325ID units undergo pre-shipment inspection (PSI). If there is an issue with OPA2325ID, 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 OPA2325ID part is unused and in its original packaging.
Return procedure for OPA2325ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2325ID 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…
