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Diodes Incorporated TLC271CS-13
- Part No.:
- TLC271CS-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC271CS-13.pdf
- Description:
- IC CMOS 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,149
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Product details
Overview
TLC271CS-13 from Diodes Incorporated is a CMOS programmable low-power operational amplifier in SO-8 package, featuring 10 mV input offset voltage (C-grade), bias-select mode for power/performance trade-off, rail-to-rail output swing down to negative rail, and operation from 3 V to 16 V supply. It serves as a precision signal conditioning amplifier in battery-powered instrumentation and audio front-ends.
For engineers reviewing the TLC271CS-13 datasheet, TLC271CS-13 pinout, TLC271CS-13 application, or TLC271CS-13 equivalent, key selection considerations include its programmable bias current (675–1600 µA high-bias / 105–280 µA medium-bias), input offset drift (1.8–2 µV/°C), common-mode range extending below ground, and SO-8 thermal performance under industrial ambient conditions.
Technical Context
The TLC271CS-13 implements a CMOS input stage with ESD protection and latch-up immunity, enabling high input impedance (>1012 Ω) and ultra-low input bias current (0.6–60 pA). Its bias-select pin (Pin 8) configures internal current sources to switch between high-bandwidth/high-current and low-power/low-noise operating modes.
It supports single-supply operation with a common-mode input voltage range that includes the negative rail (–0.2 V at VDD = 5 V), and delivers rail-to-rail output swing-VOL ≤ 50 mV above GND and VOH ≥ 3.2 V at 5 V supply. The device achieves 2.2 MHz unity-gain bandwidth and 49° phase margin in high-bias mode at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 16 V (C-grade, 0°C to +70°C); enables direct integration into 3.3 V and 5 V systems without level-shifting. |
| Input Offset Voltage | 10 mV max (TLC271C grade); defines worst-case DC error in precision gain stages without trimming. |
| Bias-Select Current | –1.4 µA typical at BIAS SELECT pin; logic-level compatible control for dynamic power/performance adaptation. |
| Input Bias Current | 0.6–60 pA (25°C); ensures minimal loading on high-impedance sensors and passive filter networks. |
| Unity-Gain Bandwidth | 2.2 MHz (high-bias, VDD = 5 V); supports audio-band amplification and anti-aliasing filtering up to ~200 kHz closed-loop. |
| Slew Rate | 3.6 V/µs (high-bias, VDD = 5 V); limits large-signal settling time to <1 µs for 3 V step response. |
| CMRR | 65–85 dB (25°C); suppresses supply- and ground-coupled interference in noisy industrial environments. |
Pinout & Package
SO-8 surface-mount package (JEDEC MS-012AC), 1.27 mm pitch, body size 4.9 × 3.9 mm, thermal resistance θJA = 117 °C/W on standard PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OFFSET N1 | Offset null inverting input | Connects to external potentiometer wiper for manual input offset trimming; unused pins must be left open or tied to IN–. |
| IN– | Inverting input | Differential input node; high-impedance CMOS node accepting signals down to –0.2 V below GND. |
| IN+ | Non-inverting input | Differential input node; identical electrical characteristics to IN–; supports rail-to-rail common-mode range. |
| GND | Analog ground reference | Primary return path for input bias currents and output load; requires low-impedance connection to system AGND plane. |
| OFFSET N2 | Offset null non-inverting input | Second offset adjustment terminal; used with OFFSET N1 for full-range nulling per datasheet Figure 1. |
| OUT | Amplifier output | Class-AB output stage capable of sourcing/sinking ±30 mA; swings within 50 mV of GND and 0.5 V of VDD. |
| VDD | Positive supply | Single positive rail input; no negative supply required; decoupling capacitor (0.1 µF) mandatory near pin. |
| BIAS SELECT | Bias mode control | Pulled low (≤0.8 V) selects high-bias mode (1.6 mA IDD); pulled high (≥2.0 V) selects medium-bias mode (280 µA IDD). |
Key Features
| Feature | Design Value |
|---|---|
| Programmable bias current | Two discrete modes: 675–1600 µA (high-performance) or 105–280 µA (ultra-low-power), selected via single digital input. |
| Rail-to-rail output swing | Output drives within 50 mV of GND and within 0.5 V of VDD, enabling full dynamic range utilization in single-supply 3.3 V systems. |
| Input common-mode range | Extends 0.2 V below GND at 5 V supply, allowing direct interfacing with transducers referenced to negative potentials. |
| Low input noise density | 25 nV/√Hz at 1 kHz (high-bias mode); suitable for microphone preamplifiers and sensor signal chains requiring <1 µV RMS noise floor. |
| ESD and latch-up immunity | HBM rating of 1.5 kV; process-hardened against transient-induced malfunction in unshielded industrial enclosures. |
Applications
| Audio Microphone Preamplifier | Portable Medical Instrumentation |
|---|---|
Use Scenario: Amplifying low-level electret microphone outputs (–40 dBV) in battery-powered voice recorders. IC Role / Device Role / Timing Role: Primary gain stage with selectable bias mode to extend runtime during standby while preserving SNR during active capture. Use Value: Medium-bias mode reduces quiescent current to 280 µA, enabling >100-hour operation on a CR2032 cell without compromising 65 dB CMRR rejection of switching regulator noise. |
Use Scenario: Signal conditioning for thermistor-based temperature sensing in handheld glucose meters. IC Role / Device Role / Timing Role: Precision buffer and differential amplifier driving 12-bit SAR ADC inputs with <1 LSB error contribution. Use Value: 10 mV offset and 2 µV/°C drift ensure <±0.3°C measurement accuracy across 0–50°C ambient, meeting ISO 15197 clinical requirements. |
| Industrial Power Supply Monitoring | Consumer Audio Equalizer Stage |
Use Scenario: Isolating and scaling 0–5 V feedback signals from isolated DC-DC converters in PLC I/O modules. IC Role / Device Role / Timing Role: High-CMRR unity-gain buffer rejecting common-mode noise from 48 V bus switching transients. Use Value: 85 dB CMRR at 25°C and 60 dB at +70°C suppresses >99% of 100 kHz ripple coupled onto sense lines, eliminating false overvoltage trips. |
Use Scenario: Implementing active bandpass filters in portable Bluetooth speakers with tone control. IC Role / Device Role / Timing Role: Low-distortion op-amp in 2nd-order Sallen-Key topology with programmable Q-factor via bias mode. Use Value: High-bias mode delivers 3.6 V/µs slew rate, supporting clean 20 kHz sine wave reproduction without slew-induced THD increase above –70 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable low-power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC272CDR | Dual-channel version in SO-8; same offset grades and bias-select architecture but shared VDD/GND. | Reduces board space in multi-stage signal chains (e.g., instrumentation amp + filter), but lacks independent channel shutdown. | Select when dual-channel operation is required and inter-channel crosstalk < –80 dB is acceptable at 10 kHz. |
| LPV821DRX | Single-channel, rail-to-rail I/O, 650 nA typical IDD; no bias-select, fixed ultra-low-power design. | Optimized for always-on sensor nodes (e.g., IoT temperature loggers), not for dynamic performance switching. | Select only if bias-select functionality is unnecessary and maximum IDD must stay below 1 µA across temperature. |
Compared with TLC271CS-13, TLC272CDR offers channel integration at the cost of design flexibility, while LPV821DRX eliminates programmability to achieve sub-µA quiescent current-neither provides the same on-the-fly AC performance/power trade-off capability.
Availability
TLC271CS-13 is available at Aetrix Electronics and suitable for portable medical instrumentation, industrial power monitoring, and consumer audio signal conditioning requiring stable component supply across commercial temperature range (0°C to +70°C) and long-term production continuity.
Supply support for TLC271CS-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, RoHS-compliant components for industrial, computing, and consumer markets.
The TLC271 series belongs to Diodes' precision analog portfolio, designed specifically for low-power, programmable operational amplification in resource-constrained embedded systems where dynamic power/performance adaptation is critical.
FAQ
What is the function of the OFFSET N1 and OFFSET N2 pins?
OFFSET N1 and OFFSET N2 are dedicated offset null terminals used together with an external 10 kΩ potentiometer to adjust input offset voltage to near-zero. Pin 1 connects to one end of the potentiometer, Pin 5 to the other end, and the wiper to VDD. This configuration allows trimming over the full ±10 mV range specified for the TLC271C grade.
Can TLC271CS-13 operate from a 3.3 V supply?
Yes-TLC271CS-13 is fully specified for 3 V minimum supply voltage in the commercial temperature range (0°C to +70°C). At 3.3 V, it maintains rail-to-rail output swing (VOL ≤ 50 mV, VOH ≥ 2.8 V), 1.7 MHz unity-gain bandwidth (high-bias), and 65 dB CMRR, making it suitable for direct interface with 3.3 V microcontrollers and ADCs.
How does BIAS SELECT pin voltage determine operating mode?
The BIAS SELECT pin (Pin 8) sets operating mode based on applied voltage: ≤0.8 V selects high-bias mode (IDD ≈ 1.6 mA, 2.2 MHz GBW), while ≥2.0 V selects medium-bias mode (IDD ≈ 280 µA, 525 kHz GBW). A 10 kΩ pull-up to VDD or microcontroller GPIO suffices; no external current limiting is needed due to built-in input protection.
Is TLC271CS-13 pin-compatible with legacy TLC271 variants?
Yes-TLC271CS-13 shares identical SO-8 pinout, electrical specifications, and bias-select functionality with all TLC271x variants (e.g., TLC271ACS-13, TLC271BCS-13). Only the input offset voltage grade differs (10 mV vs. 5 mV or 2 mV); no layout or firmware changes are required when substituting within the same grade family.
TLC271CS-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 4.6V/µs
- Gain Bandwidth Product:
- 2.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.7 pA
- Voltage - Input Offset:
- 10 mV
- Current - Supply:
- 950µA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
TLC271CS-13 FAQ
1.How can I place an order for TLC271CS-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC271CS-13 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 TLC271CS-13 reliable?
The price and inventory of TLC271CS-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC271CS-13 is usually 5 days.
3.What payment methods are accepted for TLC271CS-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC271CS-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC271CS-13?
TLC271CS-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC271CS-13 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 TLC271CS-13?
For technical support, including TLC271CS-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC271CS-13 requirements.
6.How does Aetrix verify that TLC271CS-13 is sourced from the original manufacturer or authorized distributors?
All TLC271CS-13 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 TLC271CS-13 meets industry standards.
7.What is the process for return or replacement of TLC271CS-13?
All TLC271CS-13 units undergo pre-shipment inspection (PSI). If there is an issue with TLC271CS-13, 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 TLC271CS-13 part is unused and in its original packaging.
Return procedure for TLC271CS-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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