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Texas Instruments TLC085CDR
- Part No.:
- TLC085CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC085CDR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
TLC085CDR from Texas Instruments is a quad-channel BiMOS operational amplifier optimized for single-supply, high-output-drive applications. It delivers 10 MHz bandwidth, ±57 mA output drive, 16 V/µs positive slew rate, and operates from 4.5 V to 16 V - enabling robust signal conditioning in audio line drivers and industrial sensor interfaces.
For engineers reviewing the TLC085CDR datasheet, TLC085CDR pinout, TLC085CDR application, or TLC085CDR equivalent, key selection criteria include its shutdown capability, rail-to-rail input common-mode range (GND to VDD–2 V), low 8.5 nV/√Hz input noise, and verified performance across –40°C to 125°C industrial temperature range.
Technical Context
The TLC085CDR integrates a CMOS front end for ultra-high input impedance (>1 GΩ) and low input bias current (<100 pA), paired with a bipolar output stage delivering ±57 mA sourcing/sinking into heavy loads. Its internal architecture supports stable operation with capacitive loads up to 50 pF and provides 37° phase margin at unity gain.
Each of its four independent amplifiers features dedicated shutdown control (1/2SHDN and 3/4SHDN pins), enabling dynamic power management in multi-stage analog signal chains. The device is specified for both 5 V and 12 V single-supply operation, with input offset voltage ≤3000 µV (max) and supply current of 1.9 mA per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 10 MHz - supports audio and medium-speed data acquisition without gain-bandwidth trade-offs. |
| Output Drive | ±57 mA - drives 600 Ω lines directly, eliminating external buffer stages in professional audio interfaces. |
| Slew Rate | +16 V/µs / –19 V/µs - preserves fast transient fidelity in pulse amplification and active filter designs. |
| Supply Range | 4.5 V to 16 V - compatible with 5 V logic systems and 12 V industrial rails without level-shifting. |
| Input Noise | 8.5 nV/√Hz @ 1 kHz - enables low-noise preamplification of millivolt-level sensor signals. |
| Shutdown Current | 125 µA/channel - reduces system standby power by >93% versus active mode (1.9 mA). |
| Operating Temp | –40°C to 125°C - qualified for under-hood automotive and factory-floor industrial environments. |
Pinout & Package
Package: 16-pin SOIC (D package), tape-and-reel (R suffix), 1.27 mm pitch, body size 10.3 mm × 6.6 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | OUT | Amplifier output terminals for channels 1–4; each capable of ±57 mA drive into resistive or moderate capacitive loads. |
| 2, 6, 10, 14 | IN– | Inverting inputs; support precision closed-loop configurations including active filters and differential receivers. |
| 3, 7, 11, 15 | IN+ | Non-inverting inputs; feature rail-to-rail common-mode range (GND to VDD–2 V) for single-supply sensor interfacing. |
| 4 | VDD | Positive supply rail; accepts 4.5 V to 16 V; decoupling required within 1 cm for stability. |
| 8 | GND | Analog ground reference; must be low-impedance and separated from digital ground in mixed-signal PCBs. |
| 12 | 1/2SHDN | Active-low shutdown control for channels 1 and 2; pulls supply current to 125 µA when ≤0.8 V. |
| 16 | 3/4SHDN | Active-low shutdown control for channels 3 and 4; independent of 1/2SHDN for granular power management. |
Key Features
| Feature | Design Value |
|---|---|
| BiMOS Process Architecture | Combines CMOS input stage (low IB, high Zin) with bipolar output stage (high Iout, low Zo) - eliminates need for external driver transistors. |
| Dual Shutdown Control | Independent 1/2SHDN and 3/4SHDN pins enable selective channel disabling - critical for power-aware instrumentation and battery-powered systems. |
| Rail-to-Rail Input Common-Mode | Operates with inputs down to GND and up to VDD–2 V - simplifies single-supply design for thermocouple, bridge, and current-sense amplifiers. |
| Stable with Capacitive Loads | Maintains ≥37° phase margin with 50 pF load - supports direct driving of ADC input buffers and long cables without external isolation resistors. |
| Low 1/f Noise Corner | Input voltage noise flat at 8.5 nV/√Hz from 1 kHz - ensures minimal low-frequency distortion in precision DC-coupled signal paths. |
Applications
| Audio Line Driver | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving balanced/unbalanced audio lines over 10 m cable lengths in mixing consoles and broadcast equipment. IC Role / Device Role / Timing Role: Quad op-amp configured as two differential line drivers (channels 1&2) and two receiver buffers (channels 3&4), leveraging shutdown pins for mute control. Use Value: ±57 mA output drive ensures full 2 Vrms into 600 Ω without clipping; 10 MHz bandwidth preserves harmonic content up to 20 kHz. | Use Scenario: Amplifying low-level outputs from strain gauges, RTDs, and pressure transducers in PLC analog input modules. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain and offset nulling via external resistors on IN+/IN– nodes. Use Value: 8.5 nV/√Hz input noise and <3000 µV max VIO enable sub-10 µV resolution; –40°C to 125°C rating matches industrial ambient requirements. |
| Automotive Body Control Unit | Medical Patient Monitor Front-End |
Use Scenario: Signal conditioning for door lock actuators, window motor feedback, and HVAC sensor interfaces in vehicle ECUs. IC Role / Device Role / Timing Role: Quad amplifier providing isolated signal paths for position sensing, current monitoring, and PWM filtering - using shutdown pins to reduce quiescent current during sleep mode. Use Value: 125 µA shutdown current per channel cuts total analog subsystem draw to <500 µA; 16 V absolute max rating withstands load-dump transients. | Use Scenario: Biopotential signal amplification (ECG, EEG) with high common-mode rejection and low noise in portable diagnostic devices. IC Role / Device Role / Timing Role: First-stage gain block with driven-right-leg (DRL) feedback and notch filtering - utilizing rail-to-rail input to accommodate electrode offset voltages. Use Value: Input bias current <100 pA minimizes electrode polarization error; 10 MHz GBW supports active 50/60 Hz notch filter implementation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Lower output drive (±35 mA), lower bandwidth (6.4 MHz), no shutdown pins, 2.7–6 V supply only. | Not suitable for 12 V industrial or high-current audio loads; lacks independent shutdown control. | Select TLV2464IDR only for low-voltage, low-power portable applications where shutdown is unnecessary. |
| OPA4991IDR | Higher precision (12 µV VIO), lower noise (4.2 nV/√Hz), but limited output drive (±30 mA), no shutdown, 2.7–36 V supply. | Better for ultra-low-offset DC applications (e.g., precision weigh scales); insufficient for line-driving loads. | Choose OPA4991IDR when offset and noise dominate over output current; avoid for audio or actuator interface. |
Compared with TLV2464IDR and OPA4991IDR, the TLC085CDR uniquely balances high output drive, shutdown control, and wide supply range - making it the only option among the three qualified for 12 V single-supply audio line drivers and industrial sensor exciters requiring dynamic power gating.
Availability
TLC085CDR is available at Aetrix Electronics and suitable for audio line drivers, industrial sensor signal conditioning, automotive body control units, and medical patient monitor front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC085CDR 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 high-performance op-amps and precision signal-chain solutions.
The TLC08x family was designed specifically for engineers migrating from dual-supply TL08x op-amps to modern single-supply systems - delivering higher AC/DC performance, rail-to-rail input operation, and integrated shutdown functionality in compact packages.
FAQ
What is the maximum supply voltage rating for the TLC085CDR?
The TLC085CDR has an absolute maximum supply voltage (VDD) rating of 17 V. Operation is recommended between 4.5 V and 16 V per the datasheet's Recommended Operating Conditions. Exceeding 17 V risks permanent damage, and sustained operation above 16 V voids parametric guarantees including output drive and thermal performance.
Does the TLC085CDR support rail-to-rail output swing?
No, the TLC085CDR does not provide rail-to-rail output swing. Its output voltage swing is typically within 1.5 V of each rail under load - e.g., VOH ≈ VDD – 1.5 V at IOH = –50 mA and VOL ≈ 0.5 V at IOL = 50 mA. This limitation is inherent to its bipolar output stage and must be accounted for in headroom-sensitive designs.
How many independent shutdown controls does the TLC085CDR have?
The TLC085CDR has two independent shutdown controls: pin 12 (1/2SHDN) disables channels 1 and 2, while pin 16 (3/4SHDN) disables channels 3 and 4. Each control is active-low and reduces the respective channel's supply current to 125 µA when pulled ≤0.8 V. No shared or global shutdown pin exists.
What is the typical input offset voltage for the TLC085CDR at 25°C and 5 V supply?
At 25°C and VDD = 5 V, the TLC085CDR has a typical input offset voltage (VIO) of 390 µV, with a maximum of 3000 µV across the full operating temperature range (0°C to 70°C for C-suffix). This value is confirmed in the Electrical Characteristics table under "TLC084/5" test conditions.
Can the TLC085CDR drive a 600 Ω load at 2 Vrms without distortion?
Yes, the TLC085CDR can drive a 600 Ω load at 2 Vrms (≈ ±2.83 V peak) with low distortion. At VDD = 12 V, its VOH reaches ≥10.3 V and VOL ≤0.65 V at ±50 mA, providing ample headroom. THD+N is 0.005% at 1 kHz with 8 VPP output into 10 kΩ, and remains well below 0.1% into 600 Ω per typical application curves in the datasheet.
TLC085CDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 19V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3 pA
- Voltage - Input Offset:
- 390 µV
- Current - Supply:
- 1.9mA (x4 Channels)
- Current - Output / Channel:
- 57 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
TLC085CDR FAQ
1.How can I place an order for TLC085CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC085CDR 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 TLC085CDR reliable?
The price and inventory of TLC085CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC085CDR is usually 5 days.
3.What payment methods are accepted for TLC085CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC085CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC085CDR?
TLC085CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC085CDR 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 TLC085CDR?
For technical support, including TLC085CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC085CDR requirements.
6.How does Aetrix verify that TLC085CDR is sourced from the original manufacturer or authorized distributors?
All TLC085CDR 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 TLC085CDR meets industry standards.
7.What is the process for return or replacement of TLC085CDR?
All TLC085CDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC085CDR, 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 TLC085CDR part is unused and in its original packaging.
Return procedure for TLC085CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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