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Texas Instruments TLV2442CD
- Part No.:
- TLV2442CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2442CD.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:682
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Product details
Overview
TLV2442CD from Texas Instruments is a dual rail-to-rail output operational amplifier optimized for low-voltage, wide-input-voltage operation. It delivers 1.8 MHz gain-bandwidth, 750 µA per channel supply current, and 600-Ω output drive capability at 5-V supply, with rail-to-rail output swing (0 V to 4.35 V) and extended common-mode input range (0 V to 4.25 V). It is used in precision signal conditioning for piezoelectric transducers and interfacing with ADCs in battery-powered sensor systems.
For engineers reviewing the TLV2442CD datasheet, TLV2442CD pinout, TLV2442CD application, or TLV2442CD equivalent, key selection criteria include its 950 µV max input offset voltage (TLV2442A-grade), 16 nV/√Hz input noise at 1 kHz, no phase inversion behavior, and compatibility with single-supply 2.7–10 V operation in space-constrained D-package designs.
Technical Context
The TLV2442CD implements Advanced LinCMOS™ process technology to achieve rail-to-rail output swing while maintaining high input impedance (>1 TΩ) and ultra-low input bias current (1 pA typ). Its input stage avoids phase inversion when driven to either supply rail, enabling robust operation in high-common-mode applications such as current-sense amplification and sensor front-ends.
It features a unity-gain stable architecture with 68° phase margin at 5 V, 600-Ω load, and 100 pF capacitive load, supporting stable closed-loop configurations including voltage followers and non-inverting amplifiers without external compensation. The device is fully characterized across 3 V and 5 V supplies and specified over 0°C to 70°C ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V - Enables direct integration into 3.3 V and 5 V systems without level-shifting. |
| Gain-Bandwidth Product | 1.8 MHz typ at 5 V - Supports stable amplification of signals up to ~150 kHz with moderate closed-loop gain. |
| Input Offset Voltage | 950 µV max at TA = 25°C - Meets precision DC-coupled requirements in sensor signal chains without trimming. |
| Output Drive Capability | 600-Ω load at 5 V - Drives standard telecom line impedances and ADC reference buffers directly. |
| Input Noise Voltage | 16 nV/√Hz typ at 1 kHz - Preserves SNR in low-level analog signal conditioning (e.g., thermopile, strain gauge). |
| Common-Mode Input Range | 0 V to 4.25 V min at 5 V supply - Accepts inputs within 250 mV of either rail, simplifying single-supply design. |
| Supply Current per Channel | 750 µA typ at 5 V - Enables dual-channel amplification in sub-2 mA total system power budgets. |
Pinout & Package
TLV2442CD is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package (D package), surface-mount, with standard 1.27 mm pitch and 3.9 mm × 4.9 mm body dimensions. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - Rail-to-rail capable, drives loads down to 600 Ω with <1.25 V drop at 5 mA sink. |
| 2 | IN– A | Inverting input of Amplifier A - High-impedance node (1 TΩ), sensitive to PCB leakage and guarding. |
| 3 | IN+ A | Non-inverting input of Amplifier A - Common-mode range extends to both rails; no phase inversion on overdrive. |
| 4 | GND / VDD– | Negative supply terminal - Shared ground reference for both amplifiers; must be low-impedance. |
| 5 | IN+ B | Non-inverting input of Amplifier B - Electrically identical to Pin 3; supports independent dual-channel configuration. |
| 6 | IN– B | Inverting input of Amplifier B - Matches Pin 2 performance; enables matched differential pair implementation. |
| 7 | OUT B | Amplifier B output - Fully independent rail-to-rail output; same AC/DC specs as Pin 1. |
| 8 | VDD+ | Positive supply terminal - Operates from 2.7 V to 10 V; decoupling capacitor required within 1 cm. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Swings within 100 mV of both rails at 5 V, maximizing dynamic range for ADC interface and low-voltage data acquisition. |
| No phase inversion | Remains linear even when common-mode input exceeds supply rails by 250 mV - eliminates need for clamping diodes. |
| Low input bias current | 1 pA typical enables use with high-impedance sources (e.g., pH electrodes, photodiodes) without significant error. |
| Extended common-mode input range | 0 V to 4.25 V at 5 V supply allows direct sensing of signals referenced to ground or VDD in single-supply topologies. |
| Macromodel included | SPICE model provided by TI ensures accurate simulation of transient response, stability, and noise behavior pre-layout. |
Applications
| Current-Sense Amplification | Piezoelectric Sensor Conditioning |
|---|---|
Use Scenario: Monitoring motor phase current via shunt resistor in 3.3 V embedded motor controller. IC Role / Device Role / Timing Role: Dual op-amp configured as difference amplifier (Channel A) and reference buffer (Channel B) for isolated current measurement. Use Value: 600-Ω drive capability directly interfaces with SAR ADC reference input; rail-to-rail output ensures full-scale utilization of 12-bit ADC range. | Use Scenario: Signal amplification of low-charge-output piezoelectric vibration sensor in predictive maintenance node. IC Role / Device Role / Timing Role: First-stage charge amplifier with ultra-high input impedance and low noise to preserve signal integrity. Use Value: 1 pA input bias current prevents charge leakage; 16 nV/√Hz noise floor maintains >70 dB SNR for sub-mV peak signals. |
| Single-Supply Data Acquisition Front-End | Low-Power Remote Temperature Monitoring |
Use Scenario: Analog front-end for 16-bit sigma-delta ADC in industrial PLC I/O module operating from 5 V. IC Role / Device Role / Timing Role: Dual-channel buffer and level-shifter converting thermistor bridge output to ADC-compatible 0–5 V range. Use Value: Extended common-mode input (0–4.25 V) accepts unbuffered bridge outputs; rail-to-rail output eliminates external level-shifters. | Use Scenario: Battery-powered wireless temperature node using RTD sensor and BLE MCU with integrated 10-bit ADC. IC Role / Device Role / Timing Role: Low-power instrumentation amplifier stage (one channel) and reference buffer (second channel) for ratiometric measurement. Use Value: 750 µA per channel supply current keeps total analog section under 1.6 mA; 2.7 V minimum supply extends battery life in coin-cell designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail output operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2442ID | Same core specs but rated for –40°C to 85°C industrial temperature range; 2.5 mV max VIO vs. TLV2442CD's 2.5 mV (C-suffix) - not the A-grade variant. | Required for extended ambient environments (e.g., outdoor metering, automotive cabin); not qualified for automotive AEC-Q100. | Select TLV2442ID if operating beyond 70°C ambient; otherwise TLV2442CD suffices for commercial indoor applications. |
| OPA2340UA | Higher GBW (5.5 MHz), lower noise (12 nV/√Hz), but higher supply current (800 µA/channel) and narrower common-mode range (to VDD– + 0.1 V). | Better for higher-frequency sensor signals (>500 kHz), but less tolerant of rail-stacking or ground-referenced inputs near VDD. | Choose OPA2340UA only when bandwidth >2 MHz is mandatory; TLV2442CD offers superior rail tolerance and lower quiescent power for DC/low-freq precision. |
Compared with TLV2442ID and OPA2340UA, the TLV2442CD provides optimal balance of rail-to-rail input tolerance, ultra-low bias current, and 70°C-rated reliability at lowest cost for commercial-grade sensor signal chains - without sacrificing stability or noise performance.
Availability
TLV2442CD is available at Aetrix Electronics and suitable for current-sense amplification, piezoelectric sensor conditioning, and single-supply data acquisition front-ends requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for TLV2442CD 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 TLV2442CD belongs to TI's Advanced LinCMOS™ rail-to-rail output op-amp family, designed specifically for low-voltage, high-impedance sensor interfaces and ADC driver applications where input stage robustness and output swing are critical.
FAQ
What is the maximum operating temperature range for the TLV2442CD?
The TLV2442CD is rated for 0°C to 70°C free-air operating temperature (C-suffix grade). This makes it suitable for commercial indoor applications such as industrial HMI panels, test equipment, and consumer-grade data loggers. For extended temperature operation, consider TLV2442ID (–40°C to 85°C) or TLV2442AQD (–40°C to 125°C). The TLV2442CD itself must not exceed 70°C ambient during continuous operation.
Does the TLV2442CD support true rail-to-rail input operation?
No, the TLV2442CD features rail-to-rail *output* swing but only *wide-input-voltage* operation - its common-mode input range extends from VDD– to (VDD+ – 1 V) at 5 V supply (0 V to 4.25 V min), which is broader than standard CMOS op-amps but does not reach the positive rail. It does, however, avoid phase inversion when overdriven - a key advantage over many rail-to-rail input alternatives. The TLV2442CD is not a rail-to-rail input device.
Can the TLV2442CD drive a 1000-pF capacitive load stably?
The TLV2442CD is specified for stability with up to 100 pF capacitive load at 600-Ω gain-setting resistance. Driving 1000-pF directly risks peaking or oscillation due to reduced phase margin. To drive heavy capacitive loads, add a series isolation resistor (≥100 Ω) between the TLV2442CD output and the capacitance, or use a dedicated buffer stage. Always verify stability with SPICE simulation using TI's macromodel before final layout.
Is the TLV2442CD pin-compatible with other devices in the TLV244x family?
Yes, all TLV244x dual op-amps - including TLV2442CD, TLV2442ID, TLV2442AQD, and TLV2442QD - share identical 8-pin SOIC (D) and TSSOP (PW) pinouts. Pin functions (OUT A, IN– A, IN+ A, GND, IN+ B, IN– B, OUT B, VDD+) are fully consistent across variants. Only electrical specs (VIO, temp range, qualification) differ - allowing drop-in replacement where performance and environmental requirements align.
What is the recommended bypass capacitor for TLV2442CD power supply pins?
A 0.1 µF ceramic capacitor placed as close as possible (<2 mm) to the TLV2442CD VDD+ (Pin 8) and GND (Pin 4) terminals is mandatory for stable operation. For noisy supply environments, add a 4.7 µF–10 µF bulk tantalum or aluminum electrolytic capacitor in parallel on the board-level 5 V rail. Avoid shared bypass paths between multiple TLV2442CD units to prevent crosstalk-induced instability.
TLV2442CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.4V/µs
- Gain Bandwidth Product:
- 1.81 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 750µA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLV2442CD FAQ
1.How can I place an order for TLV2442CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2442CD 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 TLV2442CD reliable?
The price and inventory of TLV2442CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2442CD is usually 5 days.
3.What payment methods are accepted for TLV2442CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2442CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2442CD?
TLV2442CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2442CD 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 TLV2442CD?
For technical support, including TLV2442CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2442CD requirements.
6.How does Aetrix verify that TLV2442CD is sourced from the original manufacturer or authorized distributors?
All TLV2442CD 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 TLV2442CD meets industry standards.
7.What is the process for return or replacement of TLV2442CD?
All TLV2442CD units undergo pre-shipment inspection (PSI). If there is an issue with TLV2442CD, 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 TLV2442CD part is unused and in its original packaging.
Return procedure for TLV2442CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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