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Texas Instruments TLV4112CDR
- Part No.:
- TLV4112CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV4112CDR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:880
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Product details
Overview
TLV4112CDR from Texas Instruments is a dual-channel, rail-to-rail output operational amplifier optimized for high-current buffer and coil driver applications. It delivers >300 mA output current per channel at 5 V, features 2.7 MHz unity-gain bandwidth, 1.5 V/µs slew rate, and operates from 2.5 V to 6 V supply with 700 µA per channel quiescent current. It is rated for 0°C to 70°C commercial temperature range.
For engineers reviewing the TLV4112CDR datasheet, TLV4112CDR pinout, TLV4112CDR application, or TLV4112CDR equivalent, key selection considerations include its high-output-drive capability in SOIC-8 packaging, thermal performance limitations in non-PowerPAD packages, rail-to-rail output swing, and absence of shutdown functionality compared to TLV4110/TLV4113 variants.
Technical Context
The TLV4112CDR implements a bipolar input stage with rail-to-rail output stage, enabling full-swing operation into heavy resistive or inductive loads. Its architecture supports stable unity-gain operation with ≥66° phase margin at 100 pF capacitive load and 100 Ω load, verified across 3 V and 5 V supplies.
It lacks internal shutdown control-unlike TLV4110 and TLV4113-and is specified only for commercial-grade (0°C to 70°C) operation. The SOIC-8 (D) package has θJA = 176°C/W, limiting continuous RMS output power to 350 mW (700 mW peak), requiring careful thermal design for sustained >200 mA output currents.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual - enables independent signal conditioning or parallel drive paths in compact space-constrained designs. |
| Output Drive | >300 mA per channel at 5 V - sufficient to directly drive solenoids, relays, or low-impedance audio loads without external transistors. |
| Rail-to-Rail Output | Swings within 100 mV of rails at 100 mA - preserves dynamic range in low-voltage systems (e.g., 3.3 V or 5 V single-supply). |
| Unity-Gain Bandwidth | 2.7 MHz - supports stable closed-loop operation up to ~200 kHz with gain ≥10, suitable for active filtering and fast-settling buffers. |
| Slew Rate | 1.5 V/µs - limits large-signal response time to ~0.7 µs for 1 V step (0.1% settling), appropriate for medium-speed pulse amplification. |
| Supply Voltage Range | 2.5 V to 6 V - compatible with Li-ion, USB, and industrial 5 V rails; excludes 12 V or automotive 13.5 V+ systems. |
| Quiescent Current | 700 µA per channel - enables battery-powered operation with multi-day runtime when paired with duty-cycled loads. |
Pinout & Package
TLV4112CDR is housed in an 8-pin SOIC (D) package with exposed pad not electrically connected. Thermal performance relies on PCB copper area under the package body-not the pad-due to non-PowerPAD construction.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Inverting or non-inverting output depending on configuration; capable of sourcing/sinking >300 mA with proper thermal layout. |
| 2 | IN1− | Inverting input terminal; high-impedance node (1000 GΩ differential resistance) sensitive to layout-induced noise. |
| 3 | IN1+ | Non-inverting input terminal; common-mode range extends from GND to VDD − 1.5 V at 25°C. |
| 4 | GND | Analog ground reference; must be low-impedance and separated from digital return paths to avoid crosstalk. |
| 5 | VDD | Positive supply rail; bypassing with 100 nF ceramic capacitor near pin is mandatory for stability at high output currents. |
| 6 | OUT2 | Second independent output; identical electrical specs to OUT1; no internal crosstalk suppression beyond 80 dB at 1 kHz. |
| 7 | IN2− | Second inverting input; electrically isolated from IN1− but shares same substrate-layout separation recommended. |
| 8 | IN2+ | Second non-inverting input; supports independent gain-setting networks per channel without interaction. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full 0–5 V output range at 100 mA load, maximizing signal fidelity in 5 V microcontroller interfaces. |
| High output current capability | Drives 300 mA continuously per channel-eliminates need for discrete emitter-follower stages in relay drivers. |
| Low quiescent current | 700 µA per channel enables always-on sensor buffering in energy-harvesting or coin-cell systems. |
| Stable unity-gain operation | Maintains ≥66° phase margin with 100 pF load, allowing direct connection to ADC inputs or long cables without oscillation. |
| Wide supply voltage range | Operates from 2.5 V (LiFePO₄ cutoff) to 6 V (overvoltage-tolerant 5 V rails), simplifying power domain consolidation. |
Applications
| Relay/Solenoid Driver | Low-Voltage Audio Buffer |
|---|---|
Use Scenario: Driving 24 Ω DC coil relays from a 5 V microcontroller GPIO via op-amp buffer to ensure reliable pull-in and release timing. IC Role / Device Role / Timing Role: High-current voltage follower providing isolation and current gain between MCU output and inductive load. Use Value: Eliminates external NPN/PNP transistor stage while maintaining <1 µs turn-on delay and <3.3 µs turn-off delay per channel. | Use Scenario: Buffering line-level audio signals (≤2 VPP) into 32 Ω headphone loads in portable medical monitors. IC Role / Device Role / Timing Role: Dual-channel rail-to-rail output buffer delivering low-distortion (<0.15% THD+N at 1 kHz) into low-Z loads. Use Value: Achieves 0.035% THD+N at 100 Hz–10 kHz with 100 Ω source impedance, avoiding audible clipping in battery-powered diagnostics. |
| Industrial Sensor Signal Conditioning | DC Motor Speed Control Interface |
Use Scenario: Amplifying and level-shifting 0–100 mV thermocouple outputs to 0–3.3 V range for SAR ADC sampling in PLC analog input modules. IC Role / Device Role / Timing Role: Precision dual op-amp performing gain (×33) and offset correction with matched channels. Use Value: Input offset drift of 3 µV/°C ensures <1 LSB error over 0–70°C ambient, meeting IEC 61000-4-2 immunity requirements. | Use Scenario: Converting PWM signals from motor controller ICs into smooth analog voltage references for linear H-bridge gate biasing. IC Role / Device Role / Timing Role: Low-pass filter + buffer stage smoothing 20 kHz PWM to <100 mV ripple at 1 A load current. Use Value: Slew rate of 1.5 V/µs supports <5 µs rise/fall times on filtered output, enabling precise 12-bit speed resolution at 100 rpm increments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-output-drive operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV4112IDR | Same SOIC-8 pinout and electrical specs, but rated for −40°C to 125°C industrial temperature range and higher thermal resistance (θJA = 176°C/W unchanged). | Required for automotive engine bay or outdoor industrial enclosures where ambient exceeds 70°C. | Select TLV4112IDR when operating outside 0°C–70°C range; no PCB changes needed but thermal derating applies above 70°C. |
| OPA2544TDR | Higher output current (1 A per channel), wider supply (±15 V / 30 V single), but larger SOIC-16 package and 2.5 mA quiescent current per channel. | Used in precision lab equipment requiring ±10 V swing and >500 mA sustained drive; not drop-in due to pin count and footprint mismatch. | Choose OPA2544TDR only when >300 mA or bipolar supplies are mandatory; TLV4112CDR remains optimal for cost-sensitive 5 V embedded systems. |
Compared with TLV4112IDR, TLV4112CDR offers lower cost and same performance at room temperature but cannot operate below 0°C or above 70°C. Compared with OPA2544TDR, TLV4112CDR provides superior power efficiency (700 µA vs 2.5 mA) and smaller footprint, though with reduced output headroom and current capability.
Availability
TLV4112CDR is available at Aetrix Electronics and suitable for relay drivers, low-voltage audio buffers, industrial sensor signal conditioning, and DC motor interface circuits requiring stable component supply across production lifecycles.
Supply support for TLV4112CDR 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 power-efficient signal chains.
The TLV411x product line was designed specifically for high-current, single-supply operational amplifier applications-including coil drivers, relay interfaces, and low-voltage actuator control-where rail-to-rail output and thermal robustness are critical.
FAQ
What is the maximum continuous output current per channel for TLV4112CDR at 5 V supply?
The TLV4112CDR delivers up to 300 mA per channel continuously at 5 V supply when mounted on a standard FR-4 PCB with adequate copper pour. However, the SOIC-8 package's thermal resistance (θJA = 176°C/W) limits RMS power dissipation to 350 mW-so sustained 300 mA operation requires careful thermal design to keep junction temperature ≤105°C. Peak currents up to 500 mA are allowed for short durations if RMS limits are maintained.
Does TLV4112CDR include a shutdown pin?
No, TLV4112CDR does not include a shutdown pin. Shutdown functionality is only present in the TLV4110 (single-channel) and TLV4113 (dual-channel with shutdown) variants. The TLV4112CDR pinout contains no SHDN terminal-pins 1–8 are strictly IN+/IN−/OUT/GND/VDD for both channels. Power-down must be implemented externally via supply switching or enable circuitry.
What is the operating temperature range specified for TLV4112CDR?
The TLV4112CDR is specified for commercial-grade operation from 0°C to 70°C ambient temperature. This is indicated by the "C" suffix in the part number. It is not rated for extended industrial (−40°C to 125°C) or automotive temperature ranges. Operation outside 0°C–70°C may result in parametric shift or reliability degradation not covered by TI's warranty.
Can TLV4112CDR drive capacitive loads, and what is the recommended approach?
Yes, TLV4112CDR can drive capacitive loads up to 100 pF stably without external compensation. For loads >1 nF, TI recommends adding a series resistor (RNULL) of ≤20 Ω between the output and the load to maintain ≥66° phase margin and prevent ringing. This snubber network isolates the amplifier's output stage from the capacitive reactance, preserving stability in applications like LCD biasing or piezo driver interfaces.
Is TLV4112CDR pin-compatible with other TLV411x family members in SOIC-8 packaging?
TLV4112CDR is pin-compatible with TLV4112CD and TLV4112ID in the SOIC-8 (D) package-same 1–8 pin mapping for dual op-amp functions. However, it is not pin-compatible with TLV4110 (single-channel, 8-pin) or TLV4113 (dual-channel with shutdown, 14-pin SOIC or 10-pin MSOP), which have different pin counts and terminal assignments. Always verify pinout diagrams before substitution.
TLV4112CDR 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:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.57V/µs
- Gain Bandwidth Product:
- 2.7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.3 pA
- Voltage - Input Offset:
- 175 µV
- Current - Supply:
- 700µA (x2 Channels)
- Current - Output / Channel:
- 320 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLV4112CDR FAQ
1.How can I place an order for TLV4112CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV4112CDR 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 TLV4112CDR reliable?
The price and inventory of TLV4112CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV4112CDR is usually 5 days.
3.What payment methods are accepted for TLV4112CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV4112CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV4112CDR?
TLV4112CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV4112CDR 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 TLV4112CDR?
For technical support, including TLV4112CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV4112CDR requirements.
6.How does Aetrix verify that TLV4112CDR is sourced from the original manufacturer or authorized distributors?
All TLV4112CDR 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 TLV4112CDR meets industry standards.
7.What is the process for return or replacement of TLV4112CDR?
All TLV4112CDR units undergo pre-shipment inspection (PSI). If there is an issue with TLV4112CDR, 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 TLV4112CDR part is unused and in its original packaging.
Return procedure for TLV4112CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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