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Texas Instruments TLV2784CD
- Part No.:
- TLV2784CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2784CD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:936
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Product details
Overview
TLV2784CD from Texas Instruments is a quad 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 bandwidth and 4.8 V/µs slew rate at 650 µA per channel, and supports 0°C to 70°C commercial temperature range. It is used in portable sensor signal conditioning and high-resolution data acquisition front-ends where supply headroom and output swing are constrained.
For engineers reviewing the TLV2784CD datasheet, TLV2784CD pinout, TLV2784CD application, or TLV2784CD equivalent, key selection criteria include its rail-to-rail I/O capability at 1.8 V, shutdown functionality (1/2SHDN and 3/4SHDN pins), quad-channel integration in TSSOP-14, and verified performance in low-noise (9 nV/√Hz @ 10 kHz) and low-distortion (0.055% THD+N) signal paths.
Technical Context
The TLV2784CD implements a CMOS input stage enabling picoampere-level input bias current (2.5 pA typ), combined with rail-to-rail output swing via complementary push-pull output transistors. Its unity-gain-stable architecture achieves 58° phase margin with 2 kΩ load and 25 pF capacitance, supporting stable operation in unity-gain buffer and active filter configurations.
It features dual independent shutdown controls: pins 6 and 13 (1/2SHDN and 3/4SHDN) enable selective channel disable, reducing total supply current to ≤1.4 µA (4 × 350 nA) when both pairs are asserted. Shutdown recovery time is 800 ns, and turnoff time is 200 ns - critical for duty-cycled sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 3.6 V - enables direct operation from two alkaline or single Li-ion cells without regulation. |
| Bandwidth (GBW) | 8 MHz - supports ≥1 MSPS data converter driving with adequate phase margin. |
| Slew Rate | 4.8 V/µs at VDD = 2.7 V - ensures <2.4 µs settling to 0.01% for 1 V step, suitable for fast-settling instrumentation. |
| Input Noise Voltage | 9 nV/√Hz @ 10 kHz - low enough for 16-bit ADC front-end without degrading SNR below 90 dB. |
| Input Offset Voltage | 3000 µV max (C-grade) - calibrated design allows DC-coupled sensor amplification with <0.3% gain error at unity gain. |
| Shutdown Current | 900 nA/channel - reduces total quiescent draw to <4 µA for battery life extension in sleep-mode systems. |
| Rail-to-Rail I/O | Input common-mode range: −0.2 V to VDD+0.2 V; output swing within 180 mV of rails - maximizes dynamic range in low-voltage systems. |
Pinout & Package
TLV2784CD is packaged in a 14-pin TSSOP (PW) with exposed pad (not electrically connected), 5.0 mm × 4.4 mm body, 0.65 mm pitch. Pin 1 is marked by a dot or beveled corner; pin numbering follows standard counter-clockwise sequence from top-left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Channel 1 Output | Amplified output of first op amp; capable of sourcing/sinking ±10 mA into 2 kΩ load. |
| 2 | Channel 1 Inverting Input | Differential input node; high-impedance CMOS input (2.5 pA bias current). |
| 3 | Channel 1 Noninverting Input | Differential input node; supports common-mode voltage down to −0.2 V (below GND). |
| 4 | Positive Supply (VDD) | Single supply rail; must be decoupled with 0.1 µF ceramic + 6.8 µF tantalum per channel group. |
| 5 | No Connect | Internally unconnected; no external connection required or recommended. |
| 6 | Channels 1 & 2 Shutdown | Logic-high (>2 V) enables both amps; logic-low (<0.6 V) disables them and places outputs in high-Z. |
| 7 | Channel 2 Output | Amplified output of second op amp; identical electrical specs to Pin 1. |
| 8 | Channel 2 Inverting Input | Differential input node; shares same input structure and noise performance as Pin 2. |
| 9 | Channel 2 Noninverting Input | Differential input node; supports rail-to-rail common-mode range as Pin 3. |
| 10 | Ground (GND) | Reference node for all signals and supplies; requires solid ground plane beneath package. |
| 11 | Channel 3 Noninverting Input | Differential input node; electrically identical to Pins 3 and 9; supports same VICR. |
| 12 | Channel 3 Inverting Input | Differential input node; matches input impedance and offset behavior of other channels. |
| 13 | Channels 3 & 4 Shutdown | Independent control for third and fourth amplifiers; enables partial system power gating. |
| 14 | Channel 4 Output | Amplified output of fourth op amp; fully specified for drive strength and settling per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 1.8 V supply: input accepts signals from −0.2 V to VDD+0.2 V; output swings within 180 mV of each rail. |
| Ultra-low supply current | 650 µA per channel at 1.8 V - allows four independent amplifiers to operate continuously on <3 mA total, ideal for coin-cell-powered devices. |
| Dual independent shutdown | Pins 6 and 13 allow selective disabling of channel pairs, reducing current to <4 µA while retaining active signal paths elsewhere. |
| Low input noise | 9 nV/√Hz at 10 kHz - preserves SNR in precision sensor interfaces (e.g., bridge-based strain gauges or thermopiles). |
| Unity-gain stability | Guaranteed stable with 2 kΩ load and 25 pF capacitive load - eliminates need for external compensation in most buffer and gain-stage designs. |
Applications
| Portable Medical Sensors | Industrial Data Acquisition |
|---|---|
Use Scenario: Amplifying low-level analog outputs from wearable ECG electrodes operating from a 3.0 V coin cell. IC Role / Device Role / Timing Role: Quad-channel signal conditioner providing simultaneous amplification, filtering, and level-shifting for differential lead signals before ADC sampling. Use Value: Rail-to-rail I/O and 1.8 V operation maximize usable ADC input range; 650 µA/channel minimizes battery drain during continuous monitoring. | Use Scenario: Signal conditioning front-end for 16-bit SAR ADC in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision buffer and gain stage for isolated current-loop (4–20 mA) and voltage (±10 V) inputs prior to digitization. Use Value: 3000 µV max VIO and 8 MHz GBW support 0.1% accuracy across 0–100 kHz bandwidth; shutdown pins enable channel-specific power management during idle cycles. |
| Audio Line Drivers | Automotive Cabin Sensors |
Use Scenario: Driving stereo line-level outputs from portable audio codecs into 10 kΩ loads with minimal distortion. IC Role / Device Role / Timing Role: Low-noise, low-THD+N voltage follower and gain stage delivering clean analog audio signals. Use Value: 0.055% THD+N at unity gain and 9 nV/√Hz noise ensure transparent audio reproduction without audible artifacts. | Use Scenario: Signal conditioning for cabin temperature and humidity sensors in automotive infotainment control units. IC Role / Device Role / Timing Role: Quad op amp performing sensor excitation, amplification, and reference buffering in a space-constrained module. Use Value: Dual shutdown (Pins 6 & 13) allows sequential activation of sensor channels, cutting average current by >75% versus always-on operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2784ID | Same electrical specs but rated for −40°C to 125°C industrial temperature range; higher max VIO (3000 µV) and wider supply (1.8–3.6 V) unchanged. | Required for under-hood or motor-control feedback loops where ambient exceeds 70°C. | Select TLV2784ID when operating outside 0°C–70°C; otherwise TLV2784CD offers cost and qualification advantage for commercial environments. |
| TLV2784CPW | Identical part number suffix - TLV2784CD and TLV2784CPW denote same device in SOIC-14 (D) vs TSSOP-14 (PW) packages; no electrical difference. | SOIC-14 (D) preferred for through-hole prototyping or legacy PCBs; TSSOP-14 (PW) saves >50% board area. | Choose TLV2784CPW for space-constrained SMT designs; TLV2784CD (SOIC) only if footprint compatibility mandates D-package. |
Compared with TLV2784ID, TLV2784CD trades extended temperature capability for lower cost and commercial qualification; compared with TLV2784CPW, it is functionally identical but supplied in SOIC-14 instead of TSSOP-14 - making package choice the sole differentiating factor in electrical performance and layout integration.
Availability
TLV2784CD is available at Aetrix Electronics and suitable for portable medical sensors, industrial data acquisition modules, audio line drivers, and automotive cabin sensor interfaces requiring stable component supply across production lifecycles.
Supply support for TLV2784CD 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, embedded processing, and digital signal technologies with over 50 years of innovation in precision analog ICs.
The TLV278x family was designed specifically for ultra-low-voltage, low-power signal conditioning in battery-operated and energy-sensitive systems - emphasizing rail-to-rail operation, sub-mA quiescent current, and robust AC performance down to 1.8 V.
FAQ
What is the maximum supply voltage for TLV2784CD?
The absolute maximum supply voltage for TLV2784CD is 4 V, but the recommended operating range is strictly 1.8 V to 3.6 V. Exceeding 3.6 V risks parametric degradation and reduced reliability, as confirmed in the Absolute Maximum Ratings table of the SLOS245E datasheet. Operation at 3.6 V is fully characterized and supported across the 0°C to 70°C temperature range.
Does TLV2784CD support true rail-to-rail input at 1.8 V supply?
Yes, TLV2784CD supports rail-to-rail input with common-mode voltage range from −0.2 V to VDD+0.2 V at 1.8 V supply. This is explicitly verified in the Recommended Operating Conditions table and confirmed by Figure 1 (input offset voltage vs common-mode voltage), which shows stable performance across the full extended range including below GND and above VDD.
How does the shutdown function work on TLV2784CD?
TLV2784CD uses two dedicated shutdown pins: Pin 6 (1/2SHDN) disables Channels 1 and 2; Pin 13 (3/4SHDN) disables Channels 3 and 4. A logic-low voltage (<0.6 V) places the respective channels in shutdown mode with supply current reduced to 900 nA/channel and outputs entering high-impedance state. Both pins must be pulled high (>2 V) or left floating (with care to avoid leakage-induced false shutdown) to enable all four channels.
What is the typical input bias current of TLV2784CD?
The typical input bias current of TLV2784CD is 2.5 pA at 25°C, as specified in the Electrical Characteristics table under "Input bias current (IIB)" for TLV278xC grade. This ultra-low value is enabled by its CMOS input stage and remains ≤100 pA across the full 0°C to 70°C operating range, making it suitable for high-impedance sensor interfaces like photodiode transimpedance amplifiers.
Can TLV2784CD drive a 1000 pF capacitive load stably?
No - TLV2784CD is not guaranteed stable with 1000 pF capacitive load. The datasheet specifies unity-gain stability only up to 25 pF (see Phase Margin vs Load Capacitance, Figure 18). For loads >10 pF, TI recommends adding a series null resistor (RNULL) between the output and load, as shown in Figure 30. At 1000 pF, RNULL ≈ 20–50 Ω is typically required to restore phase margin above 45° and prevent oscillation.
TLV2784CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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 (x4 Channels)
- 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:
- 14-SOIC
TLV2784CD FAQ
1.How can I place an order for TLV2784CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2784CD 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 TLV2784CD reliable?
The price and inventory of TLV2784CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2784CD is usually 5 days.
3.What payment methods are accepted for TLV2784CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2784CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2784CD?
TLV2784CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2784CD 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 TLV2784CD?
For technical support, including TLV2784CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2784CD requirements.
6.How does Aetrix verify that TLV2784CD is sourced from the original manufacturer or authorized distributors?
All TLV2784CD 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 TLV2784CD meets industry standards.
7.What is the process for return or replacement of TLV2784CD?
All TLV2784CD units undergo pre-shipment inspection (PSI). If there is an issue with TLV2784CD, 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 TLV2784CD part is unused and in its original packaging.
Return procedure for TLV2784CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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