My Inquiry
My Account
Texas Instruments TLV2781CD
- Part No.:
- TLV2781CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2781CD.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:675
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLV2781CD from Texas Instruments is a single-channel rail-to-rail input/output operational amplifier optimized for low-voltage, low-power applications. It operates from 1.8 V to 3.6 V, delivers 8 MHz gain-bandwidth, 4.8 V/µs slew rate at 2.7 V, and draws only 650 µA per channel - enabling high-speed signal conditioning in battery-powered sensor interfaces and portable data converters.
For engineers reviewing the TLV2781CD datasheet, TLV2781CD pinout, TLV2781CD application, or TLV2781CD equivalent, this device is selected for precision analog front-ends where supply headroom is constrained, output swing must reach both rails, and noise (9 nV/√Hz at 10 kHz) and distortion (<0.08% THD+N) must be minimized without sacrificing bandwidth.
Technical Context
The TLV2781CD employs a CMOS input stage with 2.5 pA typical input bias current and rail-to-rail input common-mode range extending −0.2 V below GND to VDD+0.2 V. Its unity-gain-stable architecture supports capacitive loads up to 25 pF with ≥58° phase margin, and shutdown functionality (available on select TLV278x variants) is not implemented in this specific part - confirmed by absence of SHDN pin in its 5-pin SOT-23 package.
It achieves 8 MHz GBW while maintaining low 18 nV/√Hz input noise at 1 kHz and 9 nV/√Hz at 10 kHz, making it suitable for driving SAR ADCs with >12-bit resolution. The device is specified over 0°C to 70°C (C-suffix), with input offset voltage ≤3000 µV max at 25°C and ±4500 µV over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 3.6 V - enables operation from two alkaline or NiMH cells; avoids need for LDO regulation in space-constrained portable systems. |
| Gain-Bandwidth Product | 8 MHz - supports stable unity-gain buffer configurations for signals up to ~1 MHz with <0.1% settling error. |
| Slew Rate | 4.8 V/µs at VDD = 2.7 V - allows full-scale 2 VPP output transitions in <420 ns, critical for fast-settling DAC output buffers. |
| Input Noise Voltage | 9 nV/√Hz at 10 kHz - ensures minimal added noise when amplifying low-level sensor outputs before ADC sampling. |
| Input Offset Voltage | ≤3000 µV at 25°C - supports DC-coupled signal chains requiring sub-mV accuracy without external trimming. |
| Supply Current | 650 µA per channel - extends battery life in always-on monitoring nodes; 3× lower than comparable 10-MHz op-amps. |
| Rail-to-Rail I/O | Input VICR = −0.2 V to VDD+0.2 V; output swing within 180 mV of rails at 1 mA load - maximizes dynamic range in single-supply systems. |
Pinout & Package
The TLV2781CD is housed in a 5-pin SOT-23 (DBV) package with exposed pad for thermal enhancement. This ultra-small surface-mount outline measures 2.9 mm × 1.6 mm × 1.1 mm and is compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Amplified signal source; capable of sourcing/sinking ±10 mA; rail-to-rail swing supports full utilization of ADC input range. |
| 2 (GND) | Ground Reference | Primary return path for input bias current and output load; requires low-inductance connection to ground plane for stability. |
| 3 (IN+) | Noninverting Input | Differential input node with 1000 GΩ input resistance; accepts signals from −0.2 V to VDD+0.2 V without phase reversal. |
| 4 (VDD) | Positive Supply | Single power rail input; must be decoupled with 0.1 µF ceramic capacitor placed ≤2 mm from pin per layout guidelines. |
| 5 (IN−) | Inverting Input | Differential input node; matched to IN+ for common-mode rejection; trace length must be minimized to reduce stray capacitance. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal swing in 1.8-V systems, eliminating level-shifting circuitry and preserving SNR in low-voltage data acquisition. |
| 8-MHz bandwidth at 650 µA | Delivers high-speed performance with ultra-low quiescent current - 40% higher GBW per µA than TLV246x family. |
| Low 9-nV/√Hz input noise | Minimizes degradation of system noise floor when amplifying microvolt-level transducer outputs (e.g., thermopiles, strain gauges). |
| Specified from 0°C to 70°C | Validated for commercial-grade applications including consumer electronics, industrial HMIs, and medical point-of-care devices. |
| Small-outline SOT-23 (DBV) package | Reduces PCB area by >70% vs SOIC-8; supports high-density layouts in wearables and compact IoT edge nodes. |
Applications
| Portable Sensor Signal Conditioning | Low-Voltage Data Converter Driver |
|---|---|
Use Scenario: Amplifying output of MEMS accelerometer (±200 mV full scale) powered from 2×AA batteries (2.4–3.0 V). IC Role / Device Role / Timing Role: Precision noninverting amplifier with gain = 10, configured as unity-gain stable buffer driving 12-bit SAR ADC input. Use Value: Rail-to-rail output ensures full 0–2.4 V ADC input range is utilized; 650 µA supply current extends battery life beyond 1 year in sleep-wake cycles. | Use Scenario: Driving AD7476A 12-bit ADC with 1 MSPS sampling rate in handheld multimeter. IC Role / Device Role / Timing Role: Output buffer for DAC-based reference voltage generator; settles to 0.01% in 2.4 µs per datasheet. Use Value: 4.8 V/µs slew rate and 8 MHz GBW prevent distortion during fast step transitions; low THD+N (<0.08%) preserves measurement linearity. |
| Wearable Biopotential Front-End | Industrial Loop-Powered Transmitter |
Use Scenario: First-stage amplification of ECG electrode signals (0.5–2 mV PP) in Bluetooth-enabled fitness band. IC Role / Device Role / Timing Role: Instrumentation amplifier input stage (with external resistors); DC-coupled with 0.05-Hz high-pass cutoff. Use Value: 2.5 pA input bias current prevents electrode polarization; 9 nV/√Hz noise ensures clean P-wave detection without oversampling. | Use Scenario: Voltage-to-current conversion stage in 4–20 mA transmitter using 3.3-V MCU and 24-V loop supply. IC Role / Device Role / Timing Role: Summing amplifier combining sensor voltage and setpoint error; drives MOSFET gate in current-regulating stage. Use Value: Input common-mode range extending to −0.2 V allows direct interface with grounded-referenced sensors; 3000 µV max VIO maintains 0.1% current accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2461CD | Higher supply range (2.7–6 V), 6.4 MHz GBW, 1.6 V/µs slew rate, 550 µA IQ - no rail-to-rail input. | Requires ≥2.7 V supply; unsuitable for 1.8-V systems; better PSRR (95 dB) but inferior noise (11 nV/√Hz). | Select when operating from 3.3 V or higher and rail-to-rail input is not required. |
| OPA333AIDBVR | Zero-drift architecture, 0.02 µV/°C drift, 350 µA IQ, 350 kHz GBW - lower bandwidth, higher cost. | Superior DC precision for long-term stability; insufficient bandwidth for >100-kHz signal paths. | Select when microvolt-level offset drift over temperature is critical and speed is secondary. |
Compared with TLV2461CD and OPA333AIDBVR, the TLV2781CD uniquely balances 1.8-V operation, 8-MHz bandwidth, and rail-to-rail I/O in a 5-pin SOT-23 - making it irreplaceable in space- and voltage-constrained high-speed analog signal chains where DC precision is secondary to dynamic performance.
Availability
TLV2781CD is available at Aetrix Electronics and suitable for portable medical monitors, battery-powered test equipment, and industrial sensor nodes requiring stable component supply across extended production lifecycles.
Supply support for TLV2781CD 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 conditioning ICs.
The TLV278x product line was designed specifically for single-supply, low-voltage applications demanding rail-to-rail performance, high speed, and ultralow quiescent current - targeting portable instrumentation and energy-efficient industrial sensing.
FAQ
What is the maximum supply voltage for TLV2781CD?
The absolute maximum supply voltage for TLV2781CD is 4 V, but the recommended operating range is strictly 1.8 V to 3.6 V per the datasheet. Exceeding 3.6 V risks parametric shift or reliability degradation; operation at 3.6 V is validated for full specifications including 8 MHz GBW and rail-to-rail output swing.
Does TLV2781CD include a shutdown pin?
No, TLV2781CD does not feature a shutdown function. Pinout diagrams confirm it is a 5-pin SOT-23 device with OUT, GND, IN+, VDD, and IN− - no SHDN terminal. Shutdown capability is present only in TLV2780, TLV2783, and TLV2785 variants, which use different pin counts and packages.
What is the input offset voltage specification for TLV2781CD?
TLV2781CD has a maximum input offset voltage of 3000 µV at 25°C and 4500 µV over the full 0°C to 70°C operating range. This value is guaranteed per the "TLV278xC" row in the Electrical Characteristics table; the "TLV278xA" grade (2000 µV max) is not applicable to the CD suffix.
Can TLV2781CD drive a 1000-pF capacitive load?
No, TLV2781CD is not unity-gain stable into 1000-pF loads. Datasheet testing confirms stability up to 25 pF with ≥58° phase margin. For larger capacitive loads, a series isolation resistor (RNULL) must be added between the output and load per Figure 30 - typical values range from 10 Ω to 100 Ω depending on load size and required settling time.
What package type is used for TLV2781CD?
TLV2781CD is supplied exclusively in the 5-pin SOT-23 (DBV) package, as confirmed by the "TLV2780 and TLV2781 AVAILABLE OPTIONS" table. It is not offered in SOIC, PDIP, or MSOP variants - those are reserved for dual (TLV2782), quad (TLV2784), or shutdown-capable versions.
TLV2781CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2.5 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 650µA
- Current - Output / Channel:
- 23 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 3.6 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLV2781CD FAQ
1.How can I place an order for TLV2781CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2781CD 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 TLV2781CD reliable?
The price and inventory of TLV2781CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2781CD is usually 5 days.
3.What payment methods are accepted for TLV2781CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2781CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2781CD?
TLV2781CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2781CD 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 TLV2781CD?
For technical support, including TLV2781CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2781CD requirements.
6.How does Aetrix verify that TLV2781CD is sourced from the original manufacturer or authorized distributors?
All TLV2781CD 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 TLV2781CD meets industry standards.
7.What is the process for return or replacement of TLV2781CD?
All TLV2781CD units undergo pre-shipment inspection (PSI). If there is an issue with TLV2781CD, 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 TLV2781CD part is unused and in its original packaging.
Return procedure for TLV2781CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV2781CD 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…
