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Texas Instruments OPA2132UAE4
- Part No.:
- OPA2132UAE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2132UAE4.pdf
- Description:
- IC OPAMP JFET 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,399
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Product details
Overview
OPA2132UAE4 from Texas Instruments is a dual-channel, FET-input operational amplifier optimized for high-impedance signal conditioning in precision data acquisition systems. It delivers 8MHz gain bandwidth, 20V/µs slew rate, 500µV max input offset voltage, and 50pA max input bias current at ±15V supply, enabling accurate SAR ADC driver and photodiode amplifier applications.
For engineers reviewing the OPA2132UAE4 datasheet, OPA2132UAE4 pinout, OPA2132UAE4 application, or OPA2132UAE4 equivalent, key selection considerations include unity-gain stability with capacitive loads up to 100pF, low 8nV/√Hz voltage noise at 1kHz, rail-to-rail output swing capability (±13.5V into 2kΩ), and guaranteed operation from –40°C to +85°C in SOIC-8 packaging.
Technical Context
The OPA2132UAE4 employs JFET input cascode circuitry to maintain ultra-low input bias current (<50pA) across its full common-mode range (–12.5V to +11.5V with ±15V supplies), eliminating phase reversal issues common in legacy FET op-amps. Its fully independent dual-amplifier architecture ensures <0.2µV/V channel separation and prevents crosstalk even under overload conditions.
This device operates from ±2.5V to ±18V supplies (5V to 36V total), supports stable unity-gain configurations, and achieves 0.01% settling in 1µs for 10V steps with 100pF load-enabling fast, precise buffering of high-impedance sensors and reference voltages without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 8MHz - enables stable closed-loop gain ≥10 at 800kHz or G=1 at 8MHz without peaking |
| Slew Rate | 20V/µs - supports clean 10Vpp signals up to ~300kHz before slew-induced distortion |
| Input Offset Voltage | ±500µV max - ensures ≤0.025% error in 2V full-scale precision buffer applications |
| Input Bias Current | ±50pA max - introduces <1mV error across 10MΩ source impedance at 25°C |
| Voltage Noise Density | 8nV/√Hz at 1kHz - dominates total noise in 10Hz–100kHz band for low-frequency sensor interfaces |
| Common-Mode Rejection | 96dB min (U grade) - rejects >200µV of 1V common-mode interference at DC |
| Open-Loop Gain | 126dB into 2kΩ - provides ≥100dB loop gain at 10kHz for high-accuracy integrators |
Pinout & Package
OPA2132UAE4 is housed in an 8-pin SOIC (D package) surface-mount package with exposed pad thermal performance matching standard SOIC-8 footprints. Pin functions are electrically isolated between channels A and B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A (Pin 3) | Noninverting input, Channel A | High-impedance node (10¹³Ω || 7pF) for precision voltage sensing; immune to phase reversal |
| –IN A (Pin 2) | Inverting input, Channel A | Accepts feedback networks; supports stable trans-impedance configurations up to 100pF capacitance |
| OUT A (Pin 1) | Output, Channel A | Drives ≥2kΩ loads to ±13.5V; sinks 30mA / sources 36mA short-circuit current |
| V– (Pin 4) | Negative power supply | Reference for all internal circuitry; must be connected to lowest system potential |
| +IN B (Pin 5) | Noninverting input, Channel B | Independent high-Z input identical to Channel A; no crosstalk coupling observed |
| –IN B (Pin 6) | Inverting input, Channel B | Supports separate feedback paths; enables dual-channel active filters without interaction |
| OUT B (Pin 7) | Output, Channel B | Delivers same dynamic performance as OUT A; maintains 0.01% settling time with 100pF load |
| V+ (Pin 8) | Positive power supply | Accepts up to +18V; requires 10nF ceramic bypass capacitor placed within 2mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| FET-input cascode architecture | Maintains ≤50pA input bias current across full ±13.5V common-mode range, eliminating guard-ring requirements |
| Unity-gain stable design | Operates without external compensation into ≥100pF capacitive loads-critical for ADC driver PCB trace capacitance |
| Phase-reversal immunity | Prevents catastrophic output inversion during input overvoltage events, enabling robust voltage-follower use |
| Independent dual-channel topology | Zero functional interaction between amplifiers-even when one channel is shorted or overdriven |
| Laser-trimmed DC precision | Guarantees ≤500µV offset and ≤10µV/°C drift over –40°C to +85°C, reducing calibration overhead |
Applications
| SAR ADC Driver | Voltage Reference Buffer |
|---|---|
Use Scenario: Driving the analog input of 16-bit successive-approximation ADCs with 10MΩ input impedance and 100pF sampling capacitor. IC Role / Device Role / Timing Role: Precision unity-gain buffer isolating reference from switching transients; settles to 0.01% in 1µs after sample command. Use Value: Prevents code-dependent errors by maintaining <1LSB gain error across full temperature range with ≤50pA bias current. |
Use Scenario: Stabilizing low-noise bandgap references (e.g., REF5025) for precision DACs and sensor excitation circuits. IC Role / Device Role / Timing Role: Low-drift, low-noise follower delivering 2.5V reference to multiple loads while rejecting supply ripple. Use Value: Achieves <0.5ppm/°C system drift using 126dB open-loop gain and 96dB CMRR to suppress 100mVpp supply noise. |
| Photodiode Amplifier | Active Filter |
Use Scenario: Converting picoamp-level photocurrents from large-area photodiodes into measurable voltage signals. IC Role / Device Role / Timing Role: Trans-impedance amplifier with 1GΩ feedback resistor; operates in photovoltaic mode with zero bias. Use Value: Enables 10fA resolution via 8nV/√Hz input noise and <50pA input bias current-minimizing dark-current-induced offset. |
Use Scenario: Implementing 2nd-order low-pass filters at 30kHz cutoff for anti-aliasing in industrial DAQ front-ends. IC Role / Device Role / Timing Role: Dual-op-amp Sallen-Key topology providing –40dB/dec roll-off with <3dB peaking. Use Value: Delivers flat group delay and <0.00008% THD+N due to 20V/µs slew rate and 8MHz bandwidth-preserving signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual FET-input operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2156 | Lower 3nV/√Hz noise, 25MHz GBW, rail-to-rail inputs; higher quiescent current (6.5mA vs 4.8mA) | Better for wideband photodiode amps or audio line drivers; less suitable for ultra-low-power battery systems | Select OPA2156 when bandwidth >10MHz or noise <5nV/√Hz is required; verify layout for RRIO stability |
| AD823A | 25MHz GBW, 35V/µs slew rate, but higher 1.2pA IB and 12nV/√Hz noise; specified for –40°C to +125°C | Preferred for high-temp automotive sensor interfaces where OPA2132UAE4's 85°C limit is insufficient | Choose AD823A for extended temperature operation; accept higher noise floor and reduced DC precision |
Compared with OPA2132UAE4, OPA2156 offers superior AC performance at higher power cost, while AD823A trades DC precision and noise for wider temperature range-making OPA2132UAE4 optimal for cost-sensitive, high-impedance industrial DAQ where 85°C operation and sub-10nV/√Hz noise are critical.
Availability
OPA2132UAE4 is available at Aetrix Electronics and suitable for precision data acquisition, photodiode signal conditioning, and high-voltage reference buffering requiring stable component supply across industrial temperature ranges.
Supply support for OPA2132UAE4 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-amp design and manufacturing.
The OPAx132 product line was engineered specifically for high-source-impedance applications demanding both low input bias current and high-speed precision-targeting data acquisition, instrumentation, and sensor interface systems.
FAQ
What is the maximum capacitive load the OPA2132UAE4 can drive while remaining stable?
The OPA2132UAE4 is unity-gain stable and supports capacitive loads up to 100pF without external compensation, as verified in the datasheet's typical characteristics (Figure 5-16). This allows direct connection to ADC input capacitors and long PCB traces without oscillation. For loads exceeding 100pF, a series resistor (24Ω–51Ω) between amplifier output and capacitance restores stability while preserving bandwidth.
Does the OPA2132UAE4 require input bias current cancellation resistors?
No, the OPA2132UAE4 does not require external bias current cancellation resistors. Its FET-input cascode architecture inherently balances input bias currents to <50pA, and its differential input impedance (10¹³Ω || 10pF) makes resistor matching unnecessary. Adding such resistors would degrade noise performance and introduce thermal EMF errors without benefit.
Can the OPA2132UAE4 operate from a single 5V supply?
Yes, the OPA2132UAE4 supports single-supply operation from 9V to 36V (i.e., V+ = 5V to 36V, V– = 0V), per Section 5.3 Recommended Operating Conditions. At 5V supply, output swing is limited to approximately 0.9V to 4.1V (V– + 0.9V to V+ – 0.9V), and input common-mode range extends from 2.5V to 1.5V below V+, making it usable in low-voltage sensor interfaces with proper level-shifting.
How does the OPA2132UAE4 compare to the OPA2134 in terms of noise and bandwidth?
The OPA2132UAE4 has 8nV/√Hz voltage noise at 1kHz and 8MHz bandwidth, while the OPA2134 specifies 8nV/√Hz noise but only 4MHz bandwidth. The OPA2132UAE4's higher slew rate (20V/µs vs 12V/µs) and improved settling time (1µs to 0.01%) make it better suited for fast-settling data acquisition, whereas the OPA2134 targets lower-power audio applications with relaxed speed requirements.
Is the OPA2132UAE4 pin-compatible with other dual SOIC-8 op-amps like the TL072?
No, the OPA2132UAE4 is not pin-compatible with TL072 or similar legacy dual op-amps. Its SOIC-8 pinout places V+ on Pin 8 and V– on Pin 4, whereas TL072 uses Pin 8 for V+ and Pin 4 for V– but assigns different functions to Pins 1, 5, and 7. Swapping devices without board revision will cause incorrect power connections and nonfunctional circuits.
OPA2132UAE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- OPAx132
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- J-FET
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- 8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 4mA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2132UAE4 FAQ
1.How can I place an order for OPA2132UAE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2132UAE4 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 OPA2132UAE4 reliable?
The price and inventory of OPA2132UAE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2132UAE4 is usually 5 days.
3.What payment methods are accepted for OPA2132UAE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2132UAE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2132UAE4?
OPA2132UAE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2132UAE4 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 OPA2132UAE4?
For technical support, including OPA2132UAE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2132UAE4 requirements.
6.How does Aetrix verify that OPA2132UAE4 is sourced from the original manufacturer or authorized distributors?
All OPA2132UAE4 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 OPA2132UAE4 meets industry standards.
7.What is the process for return or replacement of OPA2132UAE4?
All OPA2132UAE4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2132UAE4, 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 OPA2132UAE4 part is unused and in its original packaging.
Return procedure for OPA2132UAE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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