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Texas Instruments TLC2274AMDG4
- Part No.:
- TLC2274AMDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2274AMDG4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,369
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Product details
Overview
TLC2274AMDG4 from Texas Instruments is a quad rail-to-rail output operational amplifier optimized for precision, low-noise signal conditioning in single- or split-supply systems. It delivers 2.2 MHz gain-bandwidth, 3.6 V/µs slew rate, 9 nV/√Hz input voltage noise at 1 kHz, 1 pA typical input bias current, and ±5 V operation with rail-to-rail output swing - enabling direct interfacing with 12-bit ADCs in battery-powered sensor front-ends.
For engineers reviewing the TLC2274AMDG4 datasheet, TLC2274AMDG4 pinout, TLC2274AMDG4 application, or TLC2274AMDG4 equivalent, key selection criteria include its guaranteed 950 µV max input offset voltage (A-grade), −55°C to +125°C military temperature range (M-grade), SOIC-14 package compatibility, and verified performance in transducer interface and white goods control loops.
Technical Context
The TLC2274AMDG4 uses advanced LinCMOS process technology to achieve rail-to-rail output swing while maintaining high input impedance (>10¹² Ω) and ultra-low input bias current (1 pA typ). Its architecture supports both single-supply (e.g., 5 V) and dual-supply (±5 V) operation with common-mode input range extending to the negative rail.
It features internal compensation for unity-gain stability, 75 dB typical CMRR and PSRR at ±5 V, and phase margin of 52° with 100 pF capacitive load - making it suitable for closed-loop configurations driving moderate capacitive loads without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±2.2 V to ±8 V - supports wide industrial and military supply rails including ±5 V standard operation |
| Input Offset Voltage (max) | 950 µV at TA = 25°C - enables precision DC-coupled amplification without trimming in 12-bit systems |
| Gain-Bandwidth Product | 2.25 MHz at ±5 V - sufficient for anti-aliasing filters and sensor signal bandwidth up to ~200 kHz |
| Slew Rate | 3.6 V/µs - supports clean 100-kHz full-scale sine output into 10-kΩ load |
| Input Voltage Noise | 9 nV/√Hz at 1 kHz - 2× lower than legacy TLC274, critical for piezoelectric and high-Z source conditioning |
| Input Bias Current | 1 pA typical - preserves signal integrity in pH probes, photodiode, and thermocouple interfaces |
| Operating Temperature | −55°C to +125°C - qualified for military/aerospace and under-hood automotive applications |
Pinout & Package
TLC2274AMDG4 is housed in a 14-pin SOIC (D package) with nominal body size 3.91 mm × 8.65 mm. Pin 1 is top-left corner, pin 14 bottom-right, with standard SOIC pin numbering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Amplifier Channel 1 output - rail-to-rail swing supports full dynamic range into ADC reference buffers |
| 2 | 1IN− | Inverting input, Channel 1 - matched to 1IN+ for precision differential gain stages |
| 3 | 1IN+ | Non-inverting input, Channel 1 - extends to negative rail, enabling single-supply level-shifting |
| 4 | VDD+ | Positive supply terminal - accepts up to +8 V; decoupling required within 1 cm |
| 5 | 2IN+ | Non-inverting input, Channel 2 - electrically isolated per channel; no crosstalk below −80 dB |
| 6 | 2IN− | Inverting input, Channel 2 - identical specs to Channel 1; supports independent dual-channel design |
| 7 | 2OUT | Amplifier Channel 2 output - fully specified for same AC/DC performance as Channel 1 |
| 8 | NC | No connection - not bonded; must remain unconnected per TI design |
| 9 | 3IN− | Inverting input, Channel 3 - functional across full temperature range; validated at −55°C |
| 10 | 3IN+ | Non-inverting input, Channel 3 - matches input offset drift spec (2 µV/°C) across all channels |
| 11 | VDD− | Negative supply terminal - accepts down to −8 V; referenced to system ground in single-supply mode |
| 12 | 4IN+ | Non-inverting input, Channel 4 - supports simultaneous 4-channel analog acquisition |
| 13 | 4IN− | Inverting input, Channel 4 - maintains 1-pA bias current spec at 125°C |
| 14 | 4OUT | Amplifier Channel 4 output - rail-to-rail swing confirmed at 125°C with 10-kΩ load |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Drives within 15 mV of either rail at ±5 V, enabling full utilization of 0–5 V ADC input range |
| Low input bias current (1 pA) | Minimizes voltage error in high-impedance sensor circuits (e.g., >100 MΩ thermistor networks) |
| 950 µV max input offset (A-grade) | Reduces calibration overhead in factory-trimmed instrumentation and motor control feedback paths |
| −55°C to +125°C operation (M-grade) | Qualified per MIL-PRF-38535; supports deployment in avionics, downhole tools, and engine control units |
| 2.2 MHz bandwidth at ±5 V | Supports closed-loop response <100 kHz with ≥6 dB gain margin for stable PID controller implementations |
Applications
| Refrigerator Temperature Control | Hand-held ECG Monitor |
|---|---|
Use Scenario: Real-time monitoring of evaporator coil temperature using NTC thermistor in variable-speed compressor system. IC Role / Device Role / Timing Role: Precision non-inverting amplifier conditioning thermistor bridge output before 12-bit SAR ADC sampling. Use Value: Rail-to-rail output ensures full 0–5 V span maps to −40°C to +100°C range; 950 µV offset limits temperature error to <0.5°C at mid-scale. | Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in portable diagnostic device. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with ultra-low input bias current. Use Value: 1 pA input bias prevents electrode polarization drift; 9 nV/√Hz noise preserves SNR for QRS complex detection. |
| Industrial Pressure Transducer Interface | Battery-Powered Data Logger |
Use Scenario: Signal conditioning for 4–20 mA loop-powered pressure sensor with local analog output scaling. IC Role / Device Role / Timing Role: Dual-opamp configuration: one as current-to-voltage converter, second as output buffer with gain/offset trim. Use Value: Common-mode input range to negative rail allows direct sensing of 4 mA baseline; 2.2 MHz GBW supports 10 kHz sensor resonance suppression. | Use Scenario: Multi-channel analog front-end for environmental sensors (humidity, CO₂, light) logging every 10 seconds on coin-cell power. IC Role / Device Role / Timing Role: Quad amplifier simultaneously conditioning four sensor outputs prior to multiplexed ADC conversion. Use Value: 4.8 mA typical supply current at ±5 V enables >1-year battery life; rail-to-rail output maximizes dynamic range per sensor channel. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4340UA | Lower noise (5.5 nV/√Hz), higher quiescent current (800 µA/channel), SOIC-14 package | Better for audio-grade signal chains; less suitable for ultra-low-power battery operation | Select when noise dominates over power; verify layout for improved PSRR at high frequencies |
| LMV324IDR | Higher input offset (3 mV max), wider supply range (2.7–5.5 V), same SOIC-14 footprint | Cost-optimized for consumer appliances; lacks military temp grade and low-noise performance | Select for cost-sensitive commercial designs where 12-bit accuracy is not required |
Compared with OPA4340UA and LMV324IDR, the TLC2274AMDG4 uniquely balances ultra-low input bias current (1 pA), military temperature qualification (−55°C to +125°C), and A-grade offset (950 µV max) - making it the only option among the three qualified for high-reliability transducer interfaces in harsh environments.
Availability
TLC2274AMDG4 is available at Aetrix Electronics and suitable for refrigerator temperature control, hand-held ECG monitors, industrial pressure transducer interfaces, battery-powered data loggers, and military-grade sensor signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for TLC2274AMDG4 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The TLC227x family was engineered specifically for precision, low-noise, rail-to-rail output amplification in high-impedance sensor interfaces and battery-constrained systems - with the TLC2274AMDG4 variant targeting military and aerospace applications requiring extended temperature operation and tight DC specifications.
FAQ
What is the maximum operating temperature range for the TLC2274AMDG4?
The TLC2274AMDG4 is an M-grade device qualified for operation from −55°C to +125°C per MIL-PRF-38535. This specification is verified across all electrical parameters in the datasheet, including input offset voltage, bias current, and open-loop gain - making it suitable for under-hood automotive, avionics, and downhole tool applications where ambient extremes are expected. The TLC2274AMDG4 maintains rail-to-rail output swing and 2.2 MHz bandwidth throughout this full range.
Does the TLC2274AMDG4 support single-supply operation?
Yes, the TLC2274AMDG4 fully supports single-supply operation from 4.4 V to 16 V. Its common-mode input voltage range extends to the negative rail (GND), and its rail-to-rail output swings within 15 mV of both supply rails - enabling direct interfacing with 0–5 V ADCs without level-shifting circuitry. Input offset voltage and bias current remain within datasheet limits under single-supply conditions, as confirmed in Section 6.7 of the SLOS190H datasheet.
What is the input offset voltage specification for the TLC2274AMDG4?
The TLC2274AMDG4 is the 'A' variant of the TLC2274M family and guarantees a maximum input offset voltage of 950 µV at TA = 25°C, with 1500 µV maximum over the full −55°C to +125°C temperature range. This is tighter than the base TLC2274M (2500 µV max at 25°C). The specification applies to all four channels and is measured under standard test conditions (VIC = 0 V, VO = 0 V, RS = 50 Ω) per Section 6.8 of the datasheet.
Which package type does the TLC2274AMDG4 use?
The TLC2274AMDG4 uses a 14-pin SOIC (Small Outline Integrated Circuit) package designated as 'D' by Texas Instruments, with nominal dimensions of 3.91 mm × 8.65 mm. This is distinct from TSSOP or PDIP variants in the same family. The 'DG4' suffix in the part number explicitly denotes the SOIC-14 package - confirmed in TI's official orderable addendum and packaging drawings for SLOS190H.
How does the TLC2274AMDG4 compare to the TLC2274A in terms of temperature rating?
The TLC2274AMDG4 is the military-grade (M-level) version of the TLC2274A, differing solely in temperature qualification: TLC2274A is rated for −40°C to +125°C (I-level), while TLC2274AMDG4 extends to −55°C to +125°C (M-level) and is screened per MIL-PRF-38535. All other electrical specifications - including 950 µV max offset, 1 pA bias current, and 2.25 MHz GBW - are identical between the two parts. The 'M' prefix denotes enhanced reliability testing and extended low-temperature validation.
TLC2274AMDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 3.6V/µs
- Gain Bandwidth Product:
- 2.25 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 4.8mA (x4 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 4.4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC2274AMDG4 FAQ
1.How can I place an order for TLC2274AMDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2274AMDG4 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 TLC2274AMDG4 reliable?
The price and inventory of TLC2274AMDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2274AMDG4 is usually 5 days.
3.What payment methods are accepted for TLC2274AMDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2274AMDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2274AMDG4?
TLC2274AMDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2274AMDG4 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 TLC2274AMDG4?
For technical support, including TLC2274AMDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2274AMDG4 requirements.
6.How does Aetrix verify that TLC2274AMDG4 is sourced from the original manufacturer or authorized distributors?
All TLC2274AMDG4 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 TLC2274AMDG4 meets industry standards.
7.What is the process for return or replacement of TLC2274AMDG4?
All TLC2274AMDG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC2274AMDG4, 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 TLC2274AMDG4 part is unused and in its original packaging.
Return procedure for TLC2274AMDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC2274AMDG4 Tags
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