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Texas Instruments TLV2785CPW
- Part No.:
- TLV2785CPW
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLV2785CPW.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,594
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Product details
Overview
TLV2785CPW from Texas Instruments is a quad rail-to-rail input/output operational amplifier optimized for low-voltage, low-power applications. 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 draws only 650 µA per channel-enabling high-speed signal conditioning in battery-powered data converters and portable instrumentation.
For engineers reviewing the TLV2785CPW datasheet, TLV2785CPW pinout, TLV2785CPW application, or TLV2785CPW equivalent, key selection criteria include its rail-to-rail I/O swing down to 1.8 V supply, shutdown capability (900 nA/channel), −40°C to 125°C industrial temperature range, and TSSOP-16 packaging for space-constrained mixed-signal PCBs.
Technical Context
The TLV2785CPW implements a CMOS input stage with ultra-low input bias current (2.5 pA typical) and rail-to-rail output swing enabled by complementary push-pull output transistors. Its internal architecture supports stable unity-gain operation with ≥58° phase margin into 2 kΩ//25 pF loads.
It integrates individual shutdown control for channels 1/2 and 3/4 (pins 6 and 15), enabling selective power gating in multi-stage analog signal chains. The device maintains specified performance across VDD = 1.8 V–3.6 V and full industrial temperature range without external compensation.
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 NiMH cells; eliminates need for voltage regulation in portable systems. |
| Gain-Bandwidth Product | 8 MHz - Supports >1 MSPS sampling in 12-bit SAR ADC driver stages with adequate phase margin. |
| Slew Rate | 4.8 V/µs at VDD = 2.7 V - Ensures <2.4 µs settling to 0.01% for 1 VPP step, critical for precision DAC output buffers. |
| Input Offset Voltage | 250 µV max (A-grade) - Minimizes DC error in precision sensor front-ends and weigh-scale amplifiers. |
| Supply Current per Channel | 650 µA - Allows four independent op-amps consuming <2.6 mA total, extending battery life in handheld meters. |
| Input Noise Voltage | 9 nV/√Hz at 10 kHz - Low enough for audio preamp and medical ECG signal conditioning without dominant noise contribution. |
| Rail-to-Rail I/O | Input common-mode range: −0.2 V to VDD+0.2 V; Output swing: within 180 mV of rails at 1 mA - Maximizes dynamic range in single-supply 12-bit data acquisition. |
Pinout & Package
TSSOP-16 package: 5 mm × 4.4 mm × 1.2 mm body, 0.65 mm pitch, exposed pad optional for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Channel 1 Output | Low-impedance buffered output; capable of sourcing/sinking ±10 mA; rail-to-rail swing. |
| 2 | Channel 1 Inverting Input | High-impedance CMOS node; 2.5 pA typical bias current; sensitive to layout-induced leakage. |
| 3 | Channel 1 Non-inverting Input | High-impedance CMOS node; matched to pin 2 for minimal input offset drift. |
| 4 | GND | Analog ground reference; must connect directly to low-impedance ground plane under IC body. |
| 5 | No Connect | Internally unconnected; leave floating or tie to GND per layout best practice. |
| 6 | Channels 1 & 2 Shutdown | Active-low control: <0.6 V disables both amps; >2 V enables; 900 nA shutdown current per channel. |
| 7 | No Connect | Internally unconnected; leave floating or tie to GND. |
| 8 | VDD | Positive supply input; requires local 0.1 µF ceramic + 6.8 µF tantalum decoupling. |
| 9 | Channel 2 Output | Independent output; identical specs to pin 1; supports dual-channel signal processing. |
| 10 | Channel 2 Inverting Input | Matched to pin 2; enables precise differential pair configurations with channel 1. |
| 11 | Channel 2 Non-inverting Input | Matched to pin 3; allows synchronous dual-input signal conditioning. |
| 12 | No Connect | Internally unconnected; leave floating or tie to GND. |
| 13 | Channel 3 Output | Third independent output; enables three-stage filtering or multi-sensor buffering. |
| 14 | Channel 3 Inverting Input | CMOS input; same low-bias specification as pins 2 and 10. |
| 15 | Channels 3 & 4 Shutdown | Active-low control for remaining two channels; enables granular power management. |
| 16 | Channel 4 Output | Fourth output; completes quad configuration for simultaneous multi-channel analog processing. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 1.8 V supply headroom in single-supply data acquisition systems. |
| 8 MHz bandwidth at 650 µA | Delivers high-speed performance without compromising battery life in portable test equipment. |
| Shutdown mode (900 nA/channel) | Reduces total system quiescent current by >99% when channels are idle-critical for IoT sensor nodes. |
| −40°C to 125°C operating range | Qualified for under-hood automotive and industrial motor control environments without derating. |
| Low input noise (9 nV/√Hz) | Preserves SNR in front-end amplification of thermocouples and strain gauges with microvolt-level signals. |
Applications
| Portable Data Loggers | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Battery-powered environmental monitors acquiring temperature, humidity, and pressure via analog sensors. IC Role / Device Role / Timing Role: Quad op-amp configures as precision instrumentation amplifier (ch1–ch2), reference buffer (ch3), and DAC output driver (ch4). Use Value: 1.8 V operation extends AA/AAA battery life to >12 months; rail-to-rail I/O maximizes ADC dynamic range from 3.3 V microcontroller. | Use Scenario: 4–20 mA loop-powered transmitters in factory automation systems. IC Role / Device Role / Timing Role: Configured as voltage-to-current converter with precision current sense feedback and output protection. Use Value: 2.5 pA input bias prevents error in high-impedance sensor bridges; −40°C to 125°C rating ensures reliability in uncontrolled cabinet environments. |
| Medical Patient Monitoring | Automotive Cabin Sensors |
Use Scenario: Wearable ECG/EMG devices requiring low-noise, low-power analog front-end. IC Role / Device Role / Timing Role: Ch1–ch2 form active high-pass filter and gain stage; ch3 buffers reference voltage; ch4 drives anti-aliasing filter. Use Value: 9 nV/√Hz input noise preserves microvolt-level cardiac signals; shutdown mode reduces standby power to <4 µA total. | Use Scenario: Occupancy detection and air quality sensing inside vehicle cabins. IC Role / Device Role / Timing Role: Amplifies outputs from MEMS microphones and NDIR CO₂ sensors; provides level-shifting for 3.3 V ADC inputs. Use Value: AEC-Q200 stress qualification not claimed, but −40°C to 125°C operation meets automotive ambient requirements; TSSOP-16 eases automated assembly. |
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 |
|---|---|---|---|
| TLV2785IPW | Same electrical specs; rated for −40°C to 125°C industrial grade (I-suffix) vs. commercial 0°C to 70°C (C-suffix). | Required for extended temperature deployments; no change in PCB layout or schematic. | Select TLV2785IPW when operating beyond 70°C ambient or requiring guaranteed performance over full industrial range. |
| OPA2333PWR | Zero-drift architecture; 0.02 µV/°C offset drift vs. TLV2785CPW's 8 µV/°C; higher 350 µA/channel supply current. | Better DC accuracy for long-term sensor calibration; less suitable for high-speed (>100 kHz) AC-coupled paths due to chopper artifacts. | Choose OPA2333PWR where ultra-stable DC gain and offset are prioritized over bandwidth and quiescent current. |
Compared with TLV2785IPW, the TLV2785CPW trades extended temperature support for lower cost in commercial-grade applications; compared with OPA2333PWR, it offers higher speed and lower power at the expense of DC precision-making TLV2785CPW optimal for cost-sensitive, battery-powered signal chains needing 8 MHz bandwidth and 1.8 V operation.
Availability
TLV2785CPW is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and medical monitoring systems requiring stable component supply with lead-free, RoHS-compliant packaging.
Supply support for TLV2785CPW 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 innovation in precision op-amps and low-power signal chain solutions.
The TLV278x family was designed specifically for ultra-low-voltage, rail-to-rail performance in portable and energy-conscious systems-delivering high bandwidth and precision without sacrificing battery life.
FAQ
What is the maximum recommended supply voltage for TLV2785CPW?
The absolute maximum supply voltage for TLV2785CPW 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. At 3.6 V, the device achieves highest slew rate (5 V/µs) and output drive capability while maintaining rail-to-rail functionality-verified across the full 0°C to 70°C commercial temperature range.
Does TLV2785CPW support true rail-to-rail input common-mode range?
Yes, TLV2785CPW supports a true rail-to-rail input common-mode voltage range of −0.2 V to VDD+0.2 V. This allows input signals to extend 200 mV below ground and 200 mV above VDD-critical for interfacing with bipolar sensors or level-shifted signals in single-supply systems. Verified per datasheet Figure 1 and Table "Recommended Operating Conditions".
How does the shutdown function operate on TLV2785CPW?
TLV2785CPW features two independent shutdown controls: pin 6 disables channels 1 and 2; pin 15 disables channels 3 and 4. Each is active-low: pulling ≤0.6 V places associated channels in shutdown (900 nA/channel supply current); pulling ≥2 V enables normal operation. Outputs enter high-impedance state during shutdown-confirmed in datasheet Section "Shutdown Characteristics" and Figure 25.
What is the typical input bias current of TLV2785CPW?
The typical input bias current of TLV2785CPW is 2.5 pA at 25°C, with a maximum of 100 pA over the full 0°C to 70°C commercial temperature range. This ultra-low value minimizes voltage errors in high-impedance sensor interfaces (e.g., pH electrodes, photodiode transimpedance stages) and ensures stable operation without external bias compensation networks.
Can TLV2785CPW drive capacitive loads without oscillation?
TLV2785CPW is stable for capacitive loads ≤10 pF with direct connection. For loads >10 pF, a series null resistor (RNULL) between output and load is required to maintain ≥58° phase margin-per datasheet Figure 30 and Application Note "Driving a Capacitive Load". Typical RNULL values range from 0 Ω (10 pF) to 50 Ω (100 pF), verified in Figure 18 (Phase Margin vs Load Capacitance).
TLV2785CPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
TLV2785CPW FAQ
1.How can I place an order for TLV2785CPW through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2785CPW 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 TLV2785CPW reliable?
The price and inventory of TLV2785CPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2785CPW is usually 5 days.
3.What payment methods are accepted for TLV2785CPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2785CPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2785CPW?
TLV2785CPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2785CPW 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 TLV2785CPW?
For technical support, including TLV2785CPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2785CPW requirements.
6.How does Aetrix verify that TLV2785CPW is sourced from the original manufacturer or authorized distributors?
All TLV2785CPW 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 TLV2785CPW meets industry standards.
7.What is the process for return or replacement of TLV2785CPW?
All TLV2785CPW units undergo pre-shipment inspection (PSI). If there is an issue with TLV2785CPW, 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 TLV2785CPW part is unused and in its original packaging.
Return procedure for TLV2785CPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV2785CPW Tags
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LM358DT
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LM358DR
Texas Instruments
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LM2904DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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