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Texas Instruments TLV2785AIDR
- Part No.:
- TLV2785AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2785AIDR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,848
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Product details
Overview
TLV2785AIDR 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 supply, delivers 8 MHz gain-bandwidth, 4.8 V/µs slew rate at 2.7 V, and 9 nV/√Hz input noise at 10 kHz - enabling high-resolution data acquisition in battery-powered instrumentation and portable medical sensors.
For engineers reviewing the TLV2785AIDR datasheet, TLV2785AIDR pinout, TLV2785AIDR application, or TLV2785AIDR equivalent, key selection criteria include its −40°C to 125°C industrial temperature rating, 2000 µV max input offset voltage (A-grade), shutdown capability per channel, and TSSOP-16 package compatibility with space-constrained mixed-signal PCB layouts.
Technical Context
The TLV2785AIDR implements a CMOS input stage with rail-to-rail input common-mode range (−0.2 V to VDD+0.2 V) and rail-to-rail output swing, supporting single-supply operation down to 1.8 V while maintaining stability into 10 pF capacitive loads. Its internal architecture includes independent shutdown control for channels 1/2 and 3/4, enabling selective power gating in multi-stage analog signal chains.
It achieves 8 MHz unity-gain bandwidth with only 650 µA per channel supply current, delivering 70 dB CMRR and 100 dB open-loop gain at DC. The device features 2.5 pA typical input bias current, 18 nV/√Hz input noise at 1 kHz, and 0.01% settling time of 2.4 µs - making it suitable for driving SAR ADCs and precision transimpedance stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 3.6 V - enables direct operation from two alkaline or rechargeable cells without regulation |
| Gain-Bandwidth Product | 8 MHz - supports stable closed-loop gain up to 10× at 800 kHz for anti-aliasing filter interfaces |
| Slew Rate | 4.8 V/µs at VDD = 2.7 V - ensures <2.4 µs 0.01% settling for 1 VPP steps into 2 kΩ//10 pF |
| Input Offset Voltage | 2000 µV max (−40°C to 125°C) - A-grade specification enables <0.1% error in 2 V full-scale sensor amplification |
| Input Noise Density | 9 nV/√Hz at 10 kHz - low-noise performance preserves SNR in audio and biopotential front-ends |
| Shutdown Current | 900 nA/channel - reduces system standby power by >99% versus active mode (650 µA) |
| Operating Temperature | −40°C to 125°C - qualified for under-hood automotive, industrial PLC, and outdoor IoT node deployment |
Pinout & Package
TSSOP-16 package: 5 mm × 4.4 mm × 1.2 mm body, 0.65 mm pitch, thermally enhanced pad (exposed die attach paddle), RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Channel 1 output - rail-to-rail swing supports full dynamic range into ADC reference buffers |
| 2 | 1IN− | Inverting input - high impedance (1000 GΩ) minimizes loading on high-Z sensor sources |
| 3 | 1IN+ | Non-inverting input - common-mode range extends 0.2 V beyond rails for level-shifting flexibility |
| 4 | GND | Analog ground reference - dedicated return path isolates noise coupling between channels |
| 5 | NC | No internal connection - unused pin; must remain unconnected per datasheet |
| 6 | 1/2SHDN | Shutdown control for channels 1 & 2 - logic-low disables both amps and places outputs in high-Z |
| 7 | NC | No internal connection - unused pin; must remain unconnected |
| 8 | VDD | Positive supply - decoupling required within 0.1 inch using 0.1 µF ceramic + 6.8 µF tantalum |
| 9 | 2OUT | Channel 2 output - independently buffered; no crosstalk degradation above −120 dB at 10 kHz |
| 10 | 2IN− | Inverting input - matched to pin 2 for differential pair routing symmetry |
| 11 | 2IN+ | Non-inverting input - identical specs to pin 3; supports dual-channel instrumentation amp topologies |
| 12 | NC | No internal connection - unused pin |
| 13 | 4OUT | Channel 4 output - fully specified for rail-to-rail operation at 3.6 V supply |
| 14 | 4IN− | Inverting input - low input bias current (2.5 pA typ) prevents drift in high-R feedback networks |
| 15 | 4IN+ | Non-inverting input - supports single-ended to differential conversion with matched channel pairs |
| 16 | 3/4SHDN | Shutdown control for channels 3 & 4 - independent from pins 6/7, enabling asymmetric power management |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full 0–VDD output swing and input common-mode range extending 0.2 V beyond rails - eliminates level-shifting ICs in single-supply systems |
| Ultra-low supply current | 650 µA per channel at 1.8 V - allows 10+ op-amps on a 10 mA battery budget without compromising bandwidth |
| Independent dual shutdown | Separate 1/2SHDN and 3/4SHDN pins allow selective channel disabling - critical for dynamic power scaling in multi-stage filters |
| Low input offset drift | 8 µV/°C max - maintains <25 µV total offset shift across −40°C to 125°C - essential for uncalibrated industrial sensors |
| Stable into 10 pF | Phase margin ≥58° with 2 kΩ load and 10 pF capacitance - permits direct connection to ADC inputs without external isolation resistors |
Applications
| Portable ECG Front-End | Industrial 4–20 mA Transmitter |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in handheld patient monitors. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier gain block with selectable gain and DC-coupled baseline restoration. Use Value: 9 nV/√Hz noise density and 2000 µV max VIO preserve diagnostic fidelity; shutdown capability extends battery life during idle periods. | Use Scenario: Conditioning RTD or thermocouple outputs and driving 4–20 mA loop transmitters in factory automation nodes. IC Role / Device Role / Timing Role: Precision voltage-to-current converter input buffer and reference amplifier with rail-to-rail output compliance. Use Value: 8 MHz GBW supports fast loop response; −40°C to 125°C rating ensures reliability in uncontrolled cabinet environments. |
| Automotive Cabin Air Quality Sensor | Wireless Sensor Node Signal Chain |
Use Scenario: Amplifying ppm-level CO₂ or VOC sensor outputs in vehicle HVAC control modules. IC Role / Device Role / Timing Role: Low-drift, low-noise preamplifier preceding 16-bit SAR ADC sampling at 100 kSPS. Use Value: 2.5 pA input bias current prevents error in high-impedance electrochemical sensor interfaces; A-grade VIO eliminates calibration overhead. | Use Scenario: Signal conditioning for MEMS accelerometer and microphone inputs in BLE/Wi-Fi edge devices. IC Role / Device Role / Timing Role: Multi-channel analog front-end providing programmable gain, filtering, and power-gated buffering before digitization. Use Value: Independent shutdown pins reduce average current to sub-µA during sleep cycles; TSSOP-16 footprint fits tight 2-layer PCB constraints. |
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 |
|---|---|---|---|
| TLV2785IDR | Same pinout and electrical specs, but 3000 µV max VIO over −40°C to 125°C (vs. 2000 µV for TLV2785AIDR) | Acceptable where system-level calibration compensates for higher offset; lower cost for non-precision use cases | Select when absolute accuracy is secondary to cost and temperature range matches |
| OPA4376AIPWR | Lower 4.6 µV/°C drift, 7.5 MHz GBW, 2.3 V/µs slew rate; 5.5 V max supply; no shutdown function | Better drift performance for long-term stability; lacks channel-level power control needed for ultra-low-power duty cycling | Choose when offset drift dominates design margin and shutdown is unnecessary |
Compared with TLV2785IDR, TLV2785AIDR provides tighter input offset tolerance for uncalibrated systems; compared with OPA4376AIPWR, it offers integrated shutdown and wider supply range but trades off some precision and speed - making TLV2785AIDR optimal for cost-sensitive, battery-operated industrial sensors requiring flexible power management.
Availability
TLV2785AIDR is available at Aetrix Electronics and suitable for portable medical devices, industrial process transmitters, automotive cabin air quality monitors, and wireless sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV2785AIDR 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 op-amps and low-power signal chain solutions.
The TLV278x family was designed specifically for single-supply, low-voltage precision analog signal conditioning in portable and industrial equipment - emphasizing rail-to-rail operation, micropower efficiency, and robustness across extreme temperatures.
FAQ
What is the maximum recommended supply voltage for TLV2785AIDR?
The absolute maximum supply voltage for TLV2785AIDR is 4 V, but the recommended operating range is strictly 1.8 V to 3.6 V. Exceeding 3.6 V risks parametric degradation and reduced reliability, especially at elevated temperatures. Operation at 3.6 V enables full rail-to-rail output swing while maintaining 650 µA per channel supply current and 8 MHz bandwidth - verified across −40°C to 125°C.
Does TLV2785AIDR support true rail-to-rail input and output operation?
Yes, TLV2785AIDR supports true rail-to-rail input common-mode range (−0.2 V to VDD+0.2 V) and rail-to-rail output swing (within 180 mV of rails at 1 mA load). This is confirmed in the datasheet's "Recommended Operating Conditions" and "Electrical Characteristics" tables, enabling direct interfacing with 1.8 V logic and zero-reference sensors without external level-shifting circuitry - a core feature of the TLV278x family design.
How does the shutdown function operate on TLV2785AIDR?
TLV2785AIDR has two independent shutdown pins: pin 6 (1/2SHDN) controls channels 1 and 2, and pin 16 (3/4SHDN) controls channels 3 and 4. Driving either pin low reduces supply current to 900 nA per associated channel and places outputs in high-impedance state. Pins may be left floating to enable - but parasitic leakage must be managed to avoid unintended shutdown. This dual-control architecture is unique to TLV2785AIDR among quad variants.
What is the input offset voltage specification for TLV2785AIDR over temperature?
TLV2785AIDR guarantees a maximum input offset voltage of 2000 µV over the full −40°C to 125°C industrial temperature range, with a typical value of 250 µV at 25°C. Its temperature coefficient is 8 µV/°C max, meaning total offset drift remains under ±25 µV across the entire range - critical for applications like uncalibrated RTD measurement where offset stability directly impacts accuracy.
Can TLV2785AIDR drive capacitive loads without external compensation?
TLV2785AIDR is stable with capacitive loads up to 10 pF when driving a 2 kΩ load, as validated by phase margin ≥58° in the datasheet. For loads exceeding 10 pF - such as ADC input capacitance or long PCB traces - a series resistor (RNULL) is required at the output to maintain stability. The datasheet Figure 30 explicitly recommends this snubber configuration to prevent ringing or oscillation in production designs using TLV2785AIDR.
TLV2785AIDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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
TLV2785AIDR FAQ
1.How can I place an order for TLV2785AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2785AIDR 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 TLV2785AIDR reliable?
The price and inventory of TLV2785AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2785AIDR is usually 5 days.
3.What payment methods are accepted for TLV2785AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2785AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2785AIDR?
TLV2785AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2785AIDR 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 TLV2785AIDR?
For technical support, including TLV2785AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2785AIDR requirements.
6.How does Aetrix verify that TLV2785AIDR is sourced from the original manufacturer or authorized distributors?
All TLV2785AIDR 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 TLV2785AIDR meets industry standards.
7.What is the process for return or replacement of TLV2785AIDR?
All TLV2785AIDR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2785AIDR, 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 TLV2785AIDR part is unused and in its original packaging.
Return procedure for TLV2785AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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