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Texas Instruments TLV2785IN
- Part No.:
- TLV2785IN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
TLV2785IN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,331
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Product details
Overview
TLV2785IN 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 noise at 10 kHz - enabling high-resolution data acquisition in battery-powered sensor front-ends and portable medical devices.
For engineers reviewing the TLV2785IN datasheet, TLV2785IN pinout, TLV2785IN application, or TLV2785IN equivalent, this page provides verified circuit role (quad precision op-amp), industrial-grade temperature range (−40°C to 125°C), shutdown functionality, TSSOP-16 package mapping, and real-world design implications of rail-to-rail I/O, 650 µA/channel supply current, and 2000 µV max input offset voltage.
Technical Context
The TLV2785IN 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, enabling full dynamic range utilization in single-supply systems. Its 8 MHz unity-gain bandwidth is achieved with only 650 µA per channel, supporting stable closed-loop operation up to 100 kHz with 2 kΩ load and 10 pF capacitance.
It features an active shutdown mode (SHDN pins 1/2 and 15/16) reducing supply current to ≤1.7 µA per channel while placing outputs in high-impedance state. Phase margin remains ≥58° across 1.8–3.6 V supply and −40°C to 125°C, ensuring robust stability with capacitive loads up to 25 pF when properly compensated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 3.6 V - supports dual-cell Li-ion or NiMH battery operation without regulation. |
| Gain-Bandwidth Product | 8 MHz - enables stable unity-gain buffer or gain-of-10 amplification up to ~800 kHz. |
| Slew Rate | 4.8 V/µs at VDD = 2.7 V - supports 1 VPP signals up to ~760 kHz without slewing distortion. |
| Input Offset Voltage | Max 2000 µV (−40°C to 125°C) - ensures ≤2 mV error in 12-bit ADC front-end with 3.3 V reference. |
| Supply Current per Channel | 650 µA typical - total quiescent draw < 3 mA for all four op-amps, critical for always-on sensing nodes. |
| Input Noise Voltage | 9 nV/√Hz at 10 kHz - preserves SNR in audio preamps and precision instrumentation amplifiers. |
| Rail-to-Rail I/O | Full swing from GND to VDD - maximizes ADC utilization and eliminates level-shifting components. |
| Shutdown Current | ≤1.7 µA per channel - reduces system standby power by >99% versus active mode. |
Pinout & Package
TLV2785IN is housed in a 16-pin TSSOP (PW) package with 0.65 mm pitch, 5.0 mm × 4.4 mm footprint, and exposed thermal pad (not electrically connected). Pinout follows standard quad op-amp layout with dedicated shutdown control for channel pairs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | 1/2 Channel Shutdown | Active-low enable: tie to GND to disable channels 1 & 2; float or pull high to enable. |
| 3, 5, 6, 12, 13, 14 | Input Terminals (1IN+, 1IN−, 2IN+, 3IN−, 3IN+, 4IN−) | Differential inputs for four independent amplifiers; CMOS inputs draw <300 pA bias current. |
| 4, 11 | GND | Common ground reference for all channels and shutdown logic; requires low-impedance connection. |
| 7, 8, 9, 16 | Output Terminals (1OUT, 2OUT, 3OUT, 4OUT) | Rail-to-rail outputs capable of sourcing/sinking ±10 mA; high-Z in shutdown mode. |
| 10, 15 | VDD | Single positive supply input (1.8–3.6 V); requires local 0.1 µF ceramic + 6.8 µF tantalum decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Quad Rail-to-Rail I/O | Enables full-scale signal handling in 1.8 V systems without external level shifters or dual supplies. |
| 8 MHz Bandwidth @ 650 µA | Delivers high-speed performance with ultra-low power - 12× more bandwidth per µA than legacy low-power op-amps. |
| Industrial Temp Range | Specified from −40°C to 125°C - suitable for automotive cabin sensors, industrial PLC analog modules, and outdoor IoT nodes. |
| Dual Independent Shutdown | Channels 1/2 and 3/4 controlled separately via pins 1/2 and 15/16 - allows selective power gating in multi-stage signal chains. |
| Low 9 nV/√Hz Input Noise | Maintains signal integrity in microphone preamps and strain-gauge bridges where noise dominates resolution. |
| 2000 µV Max VIO (−40°C to 125°C) | Guarantees predictable DC accuracy over full industrial range - simplifies calibration in production test. |
Applications
| Portable ECG Front-End | Automotive Cabin Temperature Sensor Signal Chain |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in battery-operated wearable ECG monitors. IC Role / Device Role / Timing Role: Quad op-amp configured as 3-channel instrumentation amplifier (IA) + reference buffer, with shutdown used during sleep cycles. Use Value: 9 nV/√Hz noise and rail-to-rail output preserve 12-bit effective resolution; 650 µA/channel extends battery life beyond 7 days on two AA cells. | Use Scenario: Conditioning resistance-based temperature sensor (NTC/PT1000) output in HVAC control units exposed to under-hood thermal cycling. IC Role / Device Role / Timing Role: Precision non-inverting amplifier (gain = 10) and active low-pass filter (10 Hz cutoff) operating across −40°C to 125°C ambient. Use Value: 2000 µV max VIO and 50 dB CMRR at 60 Hz ensure <0.5°C measurement error; TSSOP-16 withstands reflow and vibration. |
| Industrial 4–20 mA Transmitter | USB-Powered Audio Line Driver |
Use Scenario: Driving loop-powered 4–20 mA current output stage using voltage-controlled current source topology. IC Role / Device Role / Timing Role: Output buffer and summing amplifier in voltage-to-current converter, with rail-to-rail output ensuring full 0–20 mA compliance. Use Value: 10 mA output drive capability and 4.8 V/µs slew rate support fast step response (<10 µs) to setpoint changes; shutdown disables transmitter during maintenance. | Use Scenario: Low-noise line driver for USB DACs and portable headphone amps powered from 5 V USB bus with LDO down to 3.3 V. IC Role / Device Role / Timing Role: Dual-channel I/V converter and single-ended-to-differential driver feeding balanced audio codecs. Use Value: 8 MHz bandwidth supports 24-bit/192 kHz audio; 9 nV/√Hz noise prevents audible hiss; TSSOP-16 eases layout in space-constrained PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2785IPW | Same electrical specs, identical TSSOP-16 package, but rated for 0°C to 70°C commercial temperature range. | Not qualified for automotive or extended industrial environments requiring −40°C startup or 125°C operation. | Select TLV2785IPW only for cost-sensitive consumer electronics with benign thermal profiles. |
| OPA2333PWR | Zero-drift architecture; 0.02 µV/°C drift vs TLV2785IN's 8 µV/°C; higher 350 nA supply current; no shutdown function. | Better long-term DC stability in precision weigh scales, but lacks power gating for battery systems. | Choose OPA2333PWR when offset drift dominates error budget; avoid when shutdown or <1 mA total quiescent is mandatory. |
Compared with TLV2785IPW, the TLV2785IN offers guaranteed −40°C to 125°C operation essential for under-hood or outdoor deployment, while versus OPA2333PWR it trades zero-drift performance for 5.4× lower supply current and integrated shutdown - making it optimal for power-constrained, thermally harsh signal conditioning.
Availability
TLV2785IN is available at Aetrix Electronics and suitable for portable medical devices, automotive cabin sensors, industrial 4–20 mA transmitters, and USB-powered audio equipment requiring stable component supply across extended temperature ranges.
Supply support for TLV2785IN 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 product line was designed specifically for ultra-low-voltage, rail-to-rail precision amplification in battery-powered and thermally demanding applications - balancing speed, noise, power, and robustness in a single family.
FAQ
What is the maximum recommended supply voltage for TLV2785IN?
The absolute maximum supply voltage for TLV2785IN 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 TLV2785IN support true rail-to-rail input and output?
Yes, TLV2785IN 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 allows direct interfacing with ADCs and DACs referenced to the same supply, eliminating level-shifting components and preserving dynamic range in 1.8 V systems.
How does the shutdown function work on TLV2785IN?
TLV2785IN has two independent shutdown controls: pins 1/2 disable channels 1 & 2, and pins 15/16 disable channels 3 & 4. Driving either pair low reduces supply current to ≤1.7 µA per channel and places outputs in high-impedance state. Leaving pins floating enables the respective channels, but parasitic leakage must be managed to prevent unintended shutdown.
What is the input offset voltage specification for TLV2785IN over temperature?
TLV2785IN has a maximum input offset voltage of 2000 µV across the full −40°C to 125°C industrial temperature range. At 25°C, typical VIO is 250 µV, with a temperature coefficient of 8 µV/°C. This guarantees predictable DC error in applications like sensor amplification where thermal drift directly impacts measurement accuracy.
Can TLV2785IN drive capacitive loads without oscillation?
TLV2785IN is stable with capacitive loads ≤25 pF when driving a 2 kΩ load, as confirmed by phase margin ≥58° in the datasheet. For larger loads (e.g., ADC input capacitance >10 pF), a series resistor (RNULL) of 10–50 Ω should be added between the op-amp output and the load to maintain stability - a standard practice documented in the application section of the TLV2785IN datasheet.
TLV2785IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 16-PDIP
TLV2785IN FAQ
1.How can I place an order for TLV2785IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2785IN 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 TLV2785IN reliable?
The price and inventory of TLV2785IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2785IN is usually 5 days.
3.What payment methods are accepted for TLV2785IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2785IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2785IN?
TLV2785IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2785IN 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 TLV2785IN?
For technical support, including TLV2785IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2785IN requirements.
6.How does Aetrix verify that TLV2785IN is sourced from the original manufacturer or authorized distributors?
All TLV2785IN 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 TLV2785IN meets industry standards.
7.What is the process for return or replacement of TLV2785IN?
All TLV2785IN units undergo pre-shipment inspection (PSI). If there is an issue with TLV2785IN, 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 TLV2785IN part is unused and in its original packaging.
Return procedure for TLV2785IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV2785IN Tags
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