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Texas Instruments TLV2171IDGKR
- Part No.:
- TLV2171IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TLV2171IDGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,780
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Product details
Overview
TLV2171IDGKR from Texas Instruments is a dual-channel, rail-to-rail output, low-noise (16 nV/√Hz), low-drift (±1 μV/°C typical) operational amplifier operating from 2.7 V to 36 V single supply (±1.35 V to ±18 V). It features EMI-hardened inputs, unity-gain stability with up to 200-pF capacitive load, and input operation 100 mV below V− - used in precision signal conditioning for AC-DC converters and battery-powered instrumentation.
For engineers reviewing the TLV2171IDGKR datasheet, TLV2171IDGKR pinout, TLV2171IDGKR application, or TLV2171IDGKR equivalent, key selection criteria include its 3 MHz gain bandwidth, 525 µA per amplifier quiescent current, ±10 pA input bias current, rail-to-rail output swing within 90–160 mV of rails, and guaranteed operation from –40°C to +125°C.
Technical Context
The TLV2171IDGKR implements a P-channel input stage enabling rail-to-rail common-mode input range down to V− − 100 mV and up to V+ − 2 V, with phase-reversal protection that clamps instead of inverting output when inputs exceed linear range. Its internal EMI filtering and RFI-hardened inputs suppress noise coupling in noisy industrial environments.
Stability is ensured across supply voltages (2.7 V–36 V) and temperatures (–40°C to +125°C) via optimized compensation, supporting unity-gain configurations with 200-pF load without external compensation. The dual-amplifier architecture shares identical specifications across channels for consistent channel matching in differential or dual-path designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 2.7 V to 36 V single supply (±1.35 V to ±18 V) - supports wide-input industrial power rails and battery systems without level-shifting. |
| Gain Bandwidth | 3 MHz - enables stable closed-loop operation at gains ≥1 for sensor amplification and active filter design. |
| Input Offset Drift | ±1 μV/°C (typical) - ensures <±3.0 μV total drift over –40°C to +125°C, critical for high-accuracy DC-coupled measurement. |
| Quiescent Current | 525 µA per amplifier - balances low power consumption with performance for always-on or portable applications. |
| Input Bias Current | ±10 pA - minimizes voltage error in high-impedance source interfaces (e.g., piezoelectric transducers, pH electrodes). |
| Output Swing | Rail-to-rail, within 90 mV of V− and 160 mV of V+ at ±18 V - delivers maximum dynamic range into 10-kΩ loads. |
| EMI Hardening | RFI-filtered inputs - reduces susceptibility to GSM, Wi-Fi, and switching regulator noise without external filtering. |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm lead pitch, thermally enhanced exposed pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT A | Output, Channel A | Amplified output of Channel A; rail-to-rail capable, drives ≥10 kΩ loads with <160 mV headroom to V+. |
| 2: –IN A | Inverting Input, Channel A | High-impedance (10¹² Ω || 3 pF) node for feedback networks; accepts signals down to V− − 0.1 V. |
| 3: +IN A | Noninverting Input, Channel A | High-impedance input for reference or sensor signal; matched bias current minimizes offset in differential pairs. |
| 4: V− | Negative Supply Rail | Common return for both amplifiers; must be decoupled locally with ≥0.1 µF ceramic capacitor. |
| 5: +IN B | Noninverting Input, Channel B | Independent input for second signal path; identical specs to Channel A for matched dual-channel operation. |
| 6: –IN B | Inverting Input, Channel B | Supports independent feedback configuration per channel; no crosstalk between A/B input stages. |
| 7: OUT B | Output, Channel B | Second rail-to-rail output; usable in dual-supply, single-supply, or split-output configurations. |
| 8: V+ | Positive Supply Rail | Highest potential supply; powers both amplifiers; requires local 0.1 µF + 1–10 µF bulk decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full dynamic range into standard loads: within 90 mV of V− and 160 mV of V+ at ±18 V, enabling maximum SNR in 12-bit+ data acquisition. |
| EMI-hardened inputs with RFI filtering | Suppresses >40 dB of RF interference (e.g., 900 MHz GSM bursts) without external ferrites or RC filters, reducing board area and BOM count. |
| No phase reversal on overdrive | Prevents catastrophic output inversion when inputs exceed common-mode range - outputs clamp safely to rails instead of reversing polarity. |
| Unity-gain stable with 200-pF load | Eliminates need for external isolation resistors in capacitive-load applications (e.g., driving ADC input caps, LCD bias lines). |
| Low 1/f noise (3 µVPP, 0.1–10 Hz) | Reduces baseline drift in precision DC measurements (e.g., strain gauge bridges, thermopile amplifiers) without chopper stabilization. |
Applications
| AC-DC Converters | Test Equipment |
|---|---|
Use Scenario: Voltage and current sensing in isolated flyback and LLC resonant converters for regulation loop feedback. IC Role / Device Role / Timing Role: Dual op amp provides simultaneous isolated sense amplification (Channel A for voltage, Channel B for current) with matched gain and offset. Use Value: 3 MHz bandwidth supports fast transient response; ±10 pA bias current avoids loading high-value shunt resistors; rail-to-rail output maximizes ADC utilization. |
Use Scenario: Signal conditioning front-end in handheld multimeters and benchtop oscilloscope vertical amplifiers. IC Role / Device Role / Timing Role: Precision dual amplifier for programmable gain stages and offset correction before digitization. Use Value: ±1 μV/°C drift ensures calibration stability over temperature; 16 nV/√Hz noise preserves resolution in µV-range measurements. |
| Battery-Powered Instruments | TFT-LCD Drive Circuits |
Use Scenario: Low-power sensor signal amplification in portable gas analyzers and medical pulse oximeters. IC Role / Device Role / Timing Role: Dual-channel amplifier for analog front-end (AFE) processing of electrochemical or photodiode signals. Use Value: 525 µA per amplifier enables multi-day operation on coin-cell batteries; EMI hardening rejects RF noise from Bluetooth/Wi-Fi coexistence. |
Use Scenario: Gamma voltage generation and grayscale reference buffering in TFT-LCD panel driver ICs. IC Role / Device Role / Timing Role: Dual op amp buffers high-impedance gamma reference ladder nodes and drives column line capacitance. Use Value: Unity-gain stability with 200-pF load eliminates external series resistors; rail-to-rail output ensures full 0–VDD gamma range coverage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, low-power, rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2313IDGKR | Lower quiescent current (50 µA vs. 525 µA), lower GBW (1 MHz vs. 3 MHz), higher input bias current (100 pA vs. 10 pA). | Better suited for ultra-low-power, low-bandwidth sensor interfaces where 3 MHz is unnecessary. | Choose OPA2313IDGKR only if sub-100-µA total supply current is mandatory and bandwidth ≤1 MHz suffices. |
| LMV358IDGKR | Higher quiescent current (130 µA per amp), lower PSRR (80 dB vs. 105 dB), no EMI hardening, non-rail-to-rail input. | Cost-optimized general-purpose use where EMI immunity and precision DC performance are secondary. | Select LMV358IDGKR only for non-critical, low-cost consumer applications with benign noise environments and relaxed accuracy requirements. |
Compared with OPA2313IDGKR and LMV358IDGKR, TLV2171IDGKR uniquely combines 3 MHz bandwidth, ±10 pA bias current, EMI hardening, and rail-to-rail input/output in a single VSSOP-8 package - making it the only option among the three qualified for precision, noise-sensitive, wide-supply industrial measurement.
Availability
TLV2171IDGKR is available at Aetrix Electronics and suitable for AC-DC converters, battery-powered instruments, and test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV2171IDGKR 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 connectivity technologies with over 50 years of innovation in precision analog ICs.
The TLVx171 product line was designed for cost-sensitive industrial and personal electronics systems requiring EMI-hardened, low-noise, single-supply op amps with wide voltage range and robust thermal performance from –40°C to +125°C.
FAQ
What is the operating temperature range for TLV2171IDGKR?
The TLV2171IDGKR is specified to operate continuously from –40°C to +125°C ambient temperature. Electrical characteristics including offset voltage drift (±1 μV/°C typical), CMRR (94–105 dB), and quiescent current (525–695 µA) are guaranteed across this full industrial temperature range, making it suitable for under-hood automotive modules and industrial motor drives.
Does TLV2171IDGKR support rail-to-rail input?
TLV2171IDGKR supports rail-to-rail output but not full rail-to-rail input. Its input common-mode voltage range extends 100 mV below V− and up to V+ − 2 V for normal operation. Operation beyond V+ − 2 V (up to V+) is possible but results in degraded parameters such as increased offset voltage and reduced CMRR - confirmed in the datasheet's Figure 2 and Section 7.4.1.
Can TLV2171IDGKR drive capacitive loads without oscillation?
Yes, TLV2171IDGKR is unity-gain stable with capacitive loads up to 200 pF, as verified in the datasheet's Figure 14–15 and Section 7.3.4. For loads exceeding 200 pF, a small series resistor (e.g., 50 Ω) between the output and load restores phase margin - no external compensation capacitor is required for standard applications like ADC input buffering or LCD bias lines.
What is the maximum supply voltage rating for TLV2171IDGKR?
The absolute maximum supply voltage (V+ to V−) for TLV2171IDGKR is ±20 V, per Section 6.1 Absolute Maximum Ratings. However, the recommended operating range is 2.7 V to 36 V single supply (±1.35 V to ±18 V), and all electrical specifications are guaranteed only within this range. Operating at ±20 V risks reliability degradation and is outside qualification limits.
Is TLV2171IDGKR pin-compatible with other dual op amps in VSSOP-8?
No, TLV2171IDGKR has a unique pinout for dual op amps in VSSOP-8: OUT A, –IN A, +IN A, V−, +IN B, –IN B, OUT B, V+. It is not pin-compatible with industry-standard dual op amps like LMV358 or OPA2313, which use different pin assignments (e.g., V− on Pin 4, V+ on Pin 8). PCB layout must follow TI's DGK footprint and signal routing guidelines.
TLV2171IDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.5V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 750 µV
- Current - Supply:
- 525µA (x2 Channels)
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
TLV2171IDGKR FAQ
1.How can I place an order for TLV2171IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2171IDGKR 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 TLV2171IDGKR reliable?
The price and inventory of TLV2171IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2171IDGKR is usually 5 days.
3.What payment methods are accepted for TLV2171IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2171IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2171IDGKR?
TLV2171IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2171IDGKR 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 TLV2171IDGKR?
For technical support, including TLV2171IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2171IDGKR requirements.
6.How does Aetrix verify that TLV2171IDGKR is sourced from the original manufacturer or authorized distributors?
All TLV2171IDGKR 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 TLV2171IDGKR meets industry standards.
7.What is the process for return or replacement of TLV2171IDGKR?
All TLV2171IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2171IDGKR, 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 TLV2171IDGKR part is unused and in its original packaging.
Return procedure for TLV2171IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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