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Texas Instruments TLV2785AID
- Part No.:
- TLV2785AID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2785AID.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,570
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Product details
Overview
TLV2785AID from Texas Instruments is a quad rail-to-rail input/output operational amplifier optimized for low-voltage, low-power precision signal conditioning. It operates from 1.8 V to 3.6 V, delivers 8 MHz gain-bandwidth, 4.8 V/µs slew rate at 2.7 V, and 9 nV/√Hz input voltage noise at 10 kHz - enabling high-resolution data acquisition in battery-powered instrumentation and portable medical sensors.
For engineers reviewing the TLV2785AID datasheet, TLV2785AID pinout, TLV2785AID application, or TLV2785AID equivalent, key selection criteria include its −40°C to 125°C industrial temperature rating, 2000 µV max input offset voltage (25°C), shutdown capability (900 nA/channel), TSSOP-16 package, and verified rail-to-rail I/O performance across full supply range.
Technical Context
The TLV2785AID integrates four independent amplifiers with complementary input stages enabling rail-to-rail common-mode input range (−0.2 V to VDD+0.2 V) and output swing within 180 mV of rails at 1.8 V supply. Its 8 MHz unity-gain bandwidth and 58° phase margin (RL = 2 kΩ, CL = 25 pF) support stable unity-gain follower and active filter configurations without external compensation.
Each channel features an active shutdown terminal (pins 7 and 15) that reduces supply current to ≤1.7 µA per channel and places outputs in high-impedance state. Input bias current is 2.5 pA typical, supporting high-impedance sensor interfacing, while CMRR exceeds 70 dB over 1.2 V to VDD input range at 2.7–3.6 V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 3.6 V - supports single-cell Li-ion or dual NiMH battery operation with no level-shifting required. |
| Gain-Bandwidth Product | 8 MHz - enables stable closed-loop gain ≥10 up to ~800 kHz with <0.1% settling time of 2.4 µs (0.01%). |
| Slew Rate | 4.8 V/µs at VDD = 2.7 V - supports 1 VPP signals up to ~760 kHz without slew-induced distortion. |
| Input Offset Voltage | 250 µV typ / 2000 µV max (25°C) - ensures ≤2 mV error in 12-bit ADC front-end with 3.3 V reference. |
| Input Noise Voltage | 9 nV/√Hz at 10 kHz - preserves SNR in audio preamps and sensor signal chains with bandwidth <100 kHz. |
| Shutdown Current | 900 nA/channel - extends battery life >100× vs active mode (650 µA/channel) in intermittent-sampling systems. |
| Operating Temperature | −40°C to 125°C - qualified for under-hood automotive, industrial PLC I/O modules, and outdoor IoT nodes. |
Pinout & Package
TSSOP-16 package: 5 mm × 4.4 mm × 1.2 mm body, 0.65 mm pitch, thermally enhanced pad (exposed die attach pad not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | OUT1 / OUT4 | Amplifier output terminals - rail-to-rail swing (180 mV from rails at 1.8 V) with ±10 mA drive capability. |
| 2, 15 | IN−1 / IN−4 | Inverting inputs - high-impedance (1000 GΩ differential RIN), matched for low offset drift. |
| 3, 14 | IN+1 / IN+4 | Non-inverting inputs - rail-to-rail common-mode range (−0.2 V to VDD+0.2 V) enables ground-referenced sensing. |
| 4, 13 | VDD | Positive supply - accepts 1.8–3.6 V; internal regulation ensures stable biasing across voltage range. |
| 5, 12 | 2IN+ / 3IN+ | Non-inverting inputs for channels 2 and 3 - identical electrical specs to pins 3 and 14. |
| 6, 11 | 2IN− / 3IN− | Inverting inputs for channels 2 and 3 - matched pair for differential stage accuracy. |
| 7, 15 | 1/2SHDN / 3/4SHDN | Shared shutdown control - logic-high enables channels 1&2 or 3&4; logic-low disables both with Hi-Z outputs. |
| 8, 9 | GND / NC | Ground reference and no-connect - pin 9 is internally unconnected; pin 8 must be tied to system ground. |
| 10 | 2OUT | Channel 2 output - electrically identical to pin 1; supports independent buffering or filtering per channel. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization with single-supply microcontrollers (e.g., MSP430, SAMD21) without level-shifting circuitry. |
| 8 MHz bandwidth at 650 µA/channel | Delivers 12-bit settling in <2.5 µs while consuming <2.6 mA total - critical for portable oscilloscopes and handheld DMMs. |
| 2.5 pA typical input bias current | Minimizes voltage error in high-Z pH electrodes, piezoelectric sensors, and photodiode transimpedance amplifiers. |
| Shutdown mode (900 nA/channel) | Reduces quiescent power to 1.6 µW per channel - extends coin-cell battery life to >5 years in wireless sensor nodes. |
| −40°C to 125°C operation | Validated performance across automotive under-hood and industrial motor-drive ambient conditions without derating. |
Applications
| Portable ECG Monitor | Industrial 4–20 mA Transmitter |
|---|---|
Use Scenario: Amplifying low-amplitude (0.5–5 mV), DC-coupled biopotential signals from dry electrodes with 0.05–150 Hz bandwidth. IC Role / Device Role / Timing Role: Primary signal-conditioning amplifier in analog front-end, providing gain, filtering, and ADC driver functionality. Use Value: 9 nV/√Hz noise and 2000 µV max VIO ensure ≥78 dB SNR for 12-bit conversion; rail-to-rail I/O eliminates need for negative supply. | Use Scenario: Converting 0–5 V sensor output to 4–20 mA loop current with HART modulation capability in field-mounted pressure transmitters. IC Role / Device Role / Timing Role: Precision voltage-to-current converter core with programmable gain and offset correction. Use Value: 70 dB CMRR at 1.2–VDD input range rejects common-mode noise on long sensor cables; 8 MHz GBW supports HART carrier (1.2 kHz) without phase lag. |
| Battery-Powered Data Logger | Automotive Cabin Air Quality Sensor |
Use Scenario: Multiplexed analog sensing of temperature, humidity, and gas concentration with periodic wake-up and measurement cycles. IC Role / Device Role / Timing Role: Low-power signal conditioner enabling duty-cycled operation via integrated shutdown control. Use Value: 900 nA shutdown current extends CR2032 battery life to >3 years at 1 sample/minute; 1.8 V minimum supply allows direct connection to fuel gauge ICs. | Use Scenario: Signal conditioning for NDIR CO₂ and electrochemical NOₓ sensors in HVAC and exhaust aftertreatment systems. IC Role / Device Role / Timing Role: Precision amplifier for sensor bridge excitation and differential output amplification. Use Value: −40°C to 125°C rating ensures operation in parked-car thermal soak; 2.5 pA IIB prevents drift in high-resistance gas sensor elements. |
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 |
|---|---|---|---|
| TLV2785ID | Same architecture but 3000 µV max VIO (25°C) vs 2000 µV for TLV2785AID; otherwise identical specs. | Acceptable where 12-bit system accuracy permits ±3 mV offset error at 3.3 V full-scale. | Select TLV2785ID for cost-sensitive industrial designs where tighter VIO is not required. |
| OPA2333PWR | Zero-drift architecture (0.02 µV/°C drift), lower 5.5 µV max VIO, but higher 17 µA/channel supply current and 350 kHz GBW. | Better for DC-precision applications (e.g., weigh scales), unsuitable for >100 kHz signal paths due to limited bandwidth. | Choose OPA2333PWR only when ultra-low drift dominates over speed and power constraints. |
Compared with TLV2785ID, TLV2785AID provides 1 mV lower input offset for improved 12-bit linearity; compared with OPA2333PWR, it offers 23× lower quiescent current and 23× higher bandwidth - making it optimal for portable, wideband sensor interfaces.
Availability
TLV2785AID is available at Aetrix Electronics and suitable for portable medical devices, industrial 4–20 mA transmitters, and automotive cabin air quality sensors requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TLV2785AID 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 over 90 years of innovation in precision analog ICs.
The TLV278x family was designed specifically for ultra-low-voltage, low-power precision amplification in battery-operated instrumentation, portable diagnostics, and industrial sensor signal chains - prioritizing rail-to-rail operation, sub-1 µA shutdown, and robustness across −40°C to 125°C.
FAQ
What is the maximum recommended supply voltage for TLV2785AID?
The absolute maximum supply voltage for TLV2785AID is 4 V, but the recommended operating range is strictly 1.8 V to 3.6 V per the datasheet. Exceeding 3.6 V risks parametric degradation and reduced reliability, especially at high temperature. Operation at 3.6 V enables full rail-to-rail output swing while maintaining 650 µA/channel supply current and 8 MHz bandwidth.
Does TLV2785AID support true rail-to-rail input common-mode range?
Yes, TLV2785AID supports a common-mode input voltage range from −0.2 V to VDD+0.2 V, verified across the full −40°C to 125°C temperature range. This allows direct interface to ground-referenced sensors and single-supply microcontroller ADC references without external level-shifting components.
How does the shutdown function operate on TLV2785AID?
TLV2785AID uses two dedicated shutdown pins (7 and 15): pin 7 controls channels 1 and 2, pin 15 controls channels 3 and 4. Driving either pin low reduces supply current to ≤1.7 µA per channel and places the corresponding outputs in high-impedance state. Pins may be left floating or pulled high to enable operation - no external pull-up resistors required.
What is the typical input bias current of TLV2785AID and why does it matter?
The typical input bias current of TLV2785AID is 2.5 pA at 25°C, with a maximum of 300 pA over temperature. This ultra-low value minimizes voltage drop across high-impedance sources such as pH electrodes, photodiodes, and capacitive humidity sensors - preserving signal integrity and reducing calibration drift in precision measurement systems.
Can TLV2785AID drive capacitive loads directly, and what is the limit?
TLV2785AID can safely drive ≤10 pF capacitive loads without external compensation. For larger loads (e.g., ADC input capacitance or long PCB traces), a series resistor (RNULL) of 10–50 Ω must be added between the amplifier output and load to maintain ≥58° phase margin and prevent oscillation - as validated in Figure 18 of the datasheet.
TLV2785AID 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:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2.5 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 650µA (x4 Channels)
- Current - Output / Channel:
- 23 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 3.6 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
TLV2785AID FAQ
1.How can I place an order for TLV2785AID through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2785AID 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 TLV2785AID reliable?
The price and inventory of TLV2785AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2785AID is usually 5 days.
3.What payment methods are accepted for TLV2785AID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2785AID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2785AID?
TLV2785AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2785AID 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 TLV2785AID?
For technical support, including TLV2785AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2785AID requirements.
6.How does Aetrix verify that TLV2785AID is sourced from the original manufacturer or authorized distributors?
All TLV2785AID 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 TLV2785AID meets industry standards.
7.What is the process for return or replacement of TLV2785AID?
All TLV2785AID units undergo pre-shipment inspection (PSI). If there is an issue with TLV2785AID, 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 TLV2785AID part is unused and in its original packaging.
Return procedure for TLV2785AID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV2785AID Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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