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Texas Instruments TLC085IN
- Part No.:
- TLC085IN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC085IN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,409
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Product details
Overview
TLC085IN from Texas Instruments is a quad-channel BiMOS operational amplifier optimized for single-supply operation across 4.5 V to 16 V, delivering 10 MHz bandwidth, ±57 mA output drive, and 16 V/µs positive slew rate. It features integrated shutdown control, rail-to-rail input common-mode range (GND to VDD–2 V), and is rated for industrial temperature operation (–40°C to 125°C), enabling use in high-fidelity audio line drivers and industrial sensor signal conditioning.
For engineers reviewing the TLC085IN datasheet, TLC085IN pinout, TLC085IN application, or TLC085IN equivalent, key selection criteria include guaranteed shutdown functionality, 4-channel channel-to-channel isolation, low 8.5 nV/√Hz input noise, and compatibility with 16-pin plastic DIP packaging for through-hole prototyping and legacy industrial PCBs.
Technical Context
The TLC085IN implements a CMOS front-end with bipolar output stage, enabling high input impedance (>1 GΩ) and robust ±50-mA load driving capability. Its internal architecture supports independent per-amplifier shutdown via dedicated 1/2SHDN and 3/4SHDN pins, allowing selective channel disabling without affecting adjacent channels.
It operates with a specified common-mode input voltage range extending to ground and up to VDD–2 V, and maintains stable phase margin (≥32°) under 50 pF capacitive loading-critical for driving cables and ADC input buffers without oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 10 MHz - enables accurate amplification of signals up to audio and ultrasonic frequencies without gain roll-off. |
| Output Drive | ±57 mA - drives heavy loads such as 600-Ω audio lines or multiple parallel inputs without external buffers. |
| Slew Rate | +16 V/µs / –19 V/µs - supports fast transient response in pulse amplification and active filter stages. |
| Supply Range | 4.5 V to 16 V - compatible with 5 V, 12 V, and unregulated industrial rails without LDO pre-regulation. |
| Input Noise | 8.5 nV/√Hz at 1 kHz - preserves signal integrity in low-level sensor interfaces like strain gauges and thermocouples. |
| Shutdown Current | 125 µA/channel - reduces total system power by >93% when channels are disabled, critical for battery-backed instrumentation. |
| Temp Range | –40°C to 125°C - qualified for under-hood automotive, motor control feedback, and factory-floor PLC modules. |
Pinout & Package
Package: 16-pin plastic DIP (N package), through-hole mounting, 0.3-inch width, RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Amplifier A output - directly drives external load or next-stage input with ±57 mA capability. |
| 2 | 1IN– | Inverting input of Amp A - accepts feedback network or differential signal source. |
| 3 | 1IN+ | Non-inverting input of Amp A - connects to reference, sensor, or signal source with rail-to-rail common-mode support. |
| 4 | VDD | Positive supply rail - powers all four amplifiers and internal bias circuitry; bypassing required. |
| 5 | 2IN+ | Non-inverting input of Amp B - electrically isolated from other channels; supports independent signal routing. |
| 6 | 2IN– | Inverting input of Amp B - used for unity-gain buffer or inverting gain configuration. |
| 7 | 2OUT | Amplifier B output - fully independent output node; no crosstalk with Channel 1 above –60 dB. |
| 8 | 1/2SHDN | Shutdown control for Amps A & B - logic-low (<0.8 V) disables both channels; high-Z state prevents loading. |
| 9 | 4OUT | Amplifier D output - identical performance to Channels 1–3; supports multi-channel analog front-ends. |
| 10 | 4IN– | Inverting input of Amp D - configured for precision differential sensing or active filtering. |
| 11 | 4IN+ | Non-inverting input of Amp D - accepts high-impedance sources with <100 pA input bias current. |
| 12 | GND | Analog ground reference - must be low-impedance star point; separates from digital ground in mixed-signal systems. |
| 13 | 3IN+ | Non-inverting input of Amp C - supports independent gain-setting or reference buffering. |
| 14 | 3IN– | Inverting input of Amp C - used in transimpedance or summing configurations. |
| 15 | 3OUT | Amplifier C output - delivers full output swing from GND to VDD–0.5 V under 50-mA load. |
| 16 | 3/4SHDN | Shutdown control for Amps C & D - independent of Pins 8 and 12, enabling asymmetric channel enablement. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Operates with inputs from GND to VDD–2 V-eliminates level-shifting circuits in single-supply data acquisition. |
| Dual independent shutdown controls | Pins 8 (1/2SHDN) and 16 (3/4SHDN) allow grouped channel disable-reducing power in multi-stage signal chains without redesign. |
| Low input offset voltage | Max 3000 µV over full temperature range-enables DC-coupled sensor amplification without trimming. |
| High output current per channel | Guaranteed ±55 mA sink/source at 0.5 V and VDD–1.5 V-drives long cables, relays, or multiple downstream inputs directly. |
| Ultra-low shutdown current | 125 µA/channel typical-extends battery life in portable test equipment and remote monitoring nodes. |
Applications
| Audio Line Driver | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving balanced/unbalanced 600-Ω audio outputs from DACs or microcontrollers in professional audio mixers and broadcast gear. IC Role / Device Role / Timing Role: Quad op-amp configured as four independent line drivers with gain ≥1, using TLC085IN's high output current and low THD+N (0.005% at 1 kHz). Use Value: Eliminates need for discrete transistor buffers; maintains <0.01% distortion at 2 VPP into 600 Ω at 12 V supply. | Use Scenario: Amplifying low-level mV-range outputs from RTDs, thermocouples, or bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain and rail-to-rail input-leveraging TLC085IN's 8.5 nV/√Hz noise and 10 MHz bandwidth. Use Value: Enables 16-bit effective resolution without external chopper stabilization; supports cold-junction compensation with on-board reference buffering. |
| Motor Control Feedback Amplifier | Multi-Channel Data Acquisition Front-End |
Use Scenario: Isolating and scaling current-sense shunt voltages in three-phase inverter gate drivers for HVAC and EV traction inverters. IC Role / Device Role / Timing Role: Four independent current-sense amplifiers, each configured as high-side or low-side differential amplifiers with matched gain. Use Value: Delivers 100 dB CMRR and <1 µs settling time-ensures accurate real-time current loop control at switching frequencies up to 20 kHz. | Use Scenario: Simultaneous analog signal conditioning for 4-channel vibration monitoring in predictive maintenance edge devices. IC Role / Device Role / Timing Role: Quad-channel anti-aliasing filter + gain stage preceding a 4-channel SAR ADC-using TLC085IN's 10 MHz GBW and low output impedance (0.25 Ω). Use Value: Maintains channel-to-channel isolation >80 dB; supports synchronized sampling with <10 ps skew between channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC084IN | No integrated shutdown control; 14-pin DIP package; identical bandwidth, noise, and output drive. | Lacks per-group shutdown-unsuitable where dynamic power gating of subsets of channels is required. | Select TLC084IN only when shutdown functionality is unnecessary and board space allows smaller footprint. |
| OPA4134UA | FET-input topology; lower input bias current (1 pA); higher cost; no shutdown; SO-14 package only. | Better for ultra-high-impedance pH or photodiode sensors; not pin-compatible; requires layout change. | Choose OPA4134UA only for applications demanding sub-pA input bias-TLC085IN remains optimal for general-purpose industrial drive and conditioning. |
Compared with TLC084IN and OPA4134UA, the TLC085IN uniquely combines quad-channel operation, dual independent shutdown controls, and 16-pin DIP packaging-making it the only option supporting selective channel power-down in legacy through-hole industrial designs without sacrificing bandwidth or drive strength.
Availability
TLC085IN is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, motor control feedback amplification, and multi-channel audio line driving requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC085IN 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 industrial-grade ICs.
The TLC08x family was designed specifically for high-output-drive, wide-bandwidth single-supply operation in demanding industrial, automotive, and audio applications-emphasizing robustness, thermal stability, and ease of use in real-world PCB layouts.
FAQ
What is the operating temperature range for the TLC085IN?
The TLC085IN is rated for operation from –40°C to +125°C, meeting industrial and extended-temperature requirements. This specification is guaranteed across all electrical parameters in the datasheet, including input offset voltage, output drive, and slew rate-making it suitable for under-hood automotive modules and factory-floor PLCs where ambient temperatures exceed 85°C.
Does the TLC085IN support true rail-to-rail input operation?
Yes, the TLC085IN supports rail-to-rail input common-mode voltage from GND to VDD–2 V. This allows direct interfacing with sensors and DACs referenced to ground or VDD without level-shifting circuitry. The input stage uses a BiMOS architecture that maintains low input bias current (<700 pA) across this full range, ensuring accuracy in high-impedance signal paths.
How does the shutdown feature work on the TLC085IN?
The TLC085IN provides two independent shutdown controls: Pin 8 (1/2SHDN) disables Amplifiers A and B, while Pin 16 (3/4SHDN) disables Amplifiers C and D. A logic-low voltage ≤0.8 V places the respective pair into ultra-low-current mode (125 µA/channel), reducing total quiescent draw by >93%. Both controls retain high-impedance states when inactive, preventing interference with active channels.
What is the maximum capacitive load the TLC085IN can drive stably?
The TLC085IN maintains stable operation with up to 50 pF of capacitive load at unity gain, exhibiting ≥32° phase margin and ≥2.2 dB gain margin. For heavier loads (e.g., >100 pF cable capacitance), external series resistance (20–100 Ω) at the output is recommended to preserve stability-verified in TI's SLOS254F datasheet Figure 19 and Figure 20.
Is the TLC085IN pin-compatible with other devices in the TLC08x family?
No-the TLC085IN uses a 16-pin DIP (N) package with unique pin assignments for dual shutdown control (Pins 8 and 16), distinguishing it from the 14-pin TLC084IN and 8-pin TLC081IN. While functional behavior aligns across the family, physical layout and pinout differ significantly; PCB design must match the TLC085IN's 16-pin footprint and shutdown pin locations.
TLC085IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
TLC085IN FAQ
1.How can I place an order for TLC085IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC085IN 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 TLC085IN reliable?
The price and inventory of TLC085IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC085IN is usually 5 days.
3.What payment methods are accepted for TLC085IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC085IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC085IN?
TLC085IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC085IN 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 TLC085IN?
For technical support, including TLC085IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC085IN requirements.
6.How does Aetrix verify that TLC085IN is sourced from the original manufacturer or authorized distributors?
All TLC085IN 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 TLC085IN meets industry standards.
7.What is the process for return or replacement of TLC085IN?
All TLC085IN units undergo pre-shipment inspection (PSI). If there is an issue with TLC085IN, 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 TLC085IN part is unused and in its original packaging.
Return procedure for TLC085IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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