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Texas Instruments TLV9042IDDFR
- Part No.:
- TLV9042IDDFR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
TLV9042IDDFR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,653
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Product details
Overview
TLV9042IDDFR from Texas Instruments is a dual-channel, rail-to-rail input/output (RRIO), ultra-low-voltage operational amplifier optimized for power-constrained applications. It operates from 1.2 V to 5.5 V supply, draws only 10 µA per channel, features ±0.6 mV input offset voltage and 350 kHz gain-bandwidth product, and is used in battery-powered wearable sensors and low-side current sensing circuits.
For engineers reviewing the TLV9042IDDFR datasheet, TLV9042IDDFR pinout, TLV9042IDDFR application, or TLV9042IDDFR equivalent, this page delivers verified electrical specs, package-validated pin functions, real-world use cases in portable electronics and motion detection, and two confirmed alternative op-amps with documented functional trade-offs.
Technical Context
The TLV9042IDDFR implements a CMOS input stage with 1 pA typical input bias current and integrated RFI/EMI filtering on input pins. Its unity-gain stable architecture supports direct connection to capacitive loads up to 100 pF without external compensation.
It delivers rail-to-rail output swing within 1–8 mV of either rail at 5.5 V supply and maintains 60–77 dB common-mode rejection across –40°C to +125°C, enabling robust performance in single-supply, low-voltage sensor front-ends and precision analog signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 5.5 V - enables operation from 1.5 V coin cells and Li-ion single-cell systems |
| Quiescent Current | 10 µA per channel - reduces battery drain in always-on wearable monitors |
| Input Offset Voltage | ±0.6 mV (typ) - supports accurate DC-coupled amplification in low-side current sensing |
| Gain-Bandwidth Product | 350 kHz - sufficient for bandwidth-limited sensor signals (e.g., PIR motion detectors) |
| Input Bias Current | 1 pA (typ) - minimizes error in high-impedance source interfaces like photodiode transimpedance stages |
| Operating Temperature | –40°C to +125°C - qualified for industrial building automation and automotive cabin modules |
| Rail-to-Rail I/O | Full swing from V– to V+ - maximizes dynamic range in single-supply 1.8 V or 3.3 V systems |
Pinout & Package
TLV9042IDDFR is housed in an 8-pin SOT-23-THN (DDF) package measuring 2.9 mm × 2.8 mm, with exposed thermal pad connected to V– for improved thermal performance in space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Output, Channel 1 | Amplified signal output referenced to V–; drives loads up to 100 pF directly |
| IN1– | Inverting Input, Channel 1 | Differential input node with 1 pA bias current; EMI-filtered for noise immunity |
| IN1+ | Noninverting Input, Channel 1 | High-impedance input (100 GΩ || 0.5 pF); accepts rail-to-rail common-mode voltages |
| V– | Negative Supply / Ground | Reference for single-supply operation; thermal pad must be connected to this pin |
| IN2+ | Noninverting Input, Channel 2 | Independent second channel input; identical AC/DC specs to Channel 1 |
| IN2– | Inverting Input, Channel 2 | Second differential pair; supports dual-sensor or differential-output configurations |
| OUT2 | Output, Channel 2 | Second independent output; no crosstalk specified beyond 5.6 µV/V channel separation |
| V+ | Positive Supply | Accepts 1.2–5.5 V; PSRR of ±20 µV/V ensures stability under supply ripple |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply voltage | Operates down to 1.2 V - enables direct integration with primary alkaline or lithium coin cells |
| Micro-power consumption | 10 µA/ch quiescent current - extends battery life in multi-year wearable deployments |
| Rail-to-rail input/output | Full input range (V– to V+) and output swing within 1 mV of rails at light load - maximizes ADC utilization in 12-bit systems |
| Integrated EMI filtering | On-chip RFI/EMI rejection filter - eliminates need for external ferrite beads in headset audio preamps |
| No phase reversal | Guaranteed non-inverting behavior during input overdrive - prevents latch-up in unidirectional current-sense amplifiers |
| Unity-gain stable | Stable at G = 1 with 100 pF capacitive load - simplifies layout in compact IoT sensor nodes |
Applications
| Wearable Fitness Monitor | Single-Supply Current Sensing |
|---|---|
Use Scenario: Amplifying low-level biopotential signals (e.g., heart rate via photoplethysmography) in coin-cell-powered wristbands. IC Role / Device Role / Timing Role: Dual-channel RRIO op-amp providing DC-coupled gain and baseline stabilization for analog front-end. Use Value: 10 µA/ch quiescent current extends battery life beyond 6 months; 1.2 V operation allows direct use of CR2032 cell without boost converter. | Use Scenario: Measuring load current in battery management systems using shunt resistor feedback. IC Role / Device Role / Timing Role: Low-offset, low-drift amplifier configured in noninverting topology for unidirectional current measurement. Use Value: ±0.6 mV offset and 0.8 µV/°C drift minimize temperature-induced error; rail-to-rail output ensures full-scale ADC utilization at 1.8 V supply. |
| Motion Detector (PIR) | Electronic Point-of-Sale (EPOS) |
Use Scenario: Conditioning weak AC-coupled signals from passive infrared (PIR) sensors in smart lighting controls. IC Role / Device Role / Timing Role: Dual op-amp implementing active bandpass filtering and gain staging before ADC sampling. Use Value: 350 kHz GBW supports 0.1–10 Hz PIR signal bandwidth; EMI filtering rejects RF interference from nearby Wi-Fi/BLE radios. | Use Scenario: Signal conditioning for magnetic stripe reader (MSR) head outputs in handheld payment terminals. IC Role / Device Role / Timing Role: Low-noise, low-power amplifier boosting microvolt-level MSR analog waveforms prior to digitization. Use Value: 6.5 µVP-P (0.1–10 Hz) noise enables clean decoding of encoded track data; 125°C rating supports operation in thermally stressed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power, rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9002IDR | Higher IQ (60 µA/ch), wider GBW (1 MHz), same 1.2–5.5 V supply range | Better suited for higher-speed sensor interfaces requiring >100 kHz bandwidth | Select when speed outweighs battery life; not drop-in due to higher current draw |
| LPV821DRX | Lower IQ (650 nA/ch), lower GBW (6.5 kHz), same RRIO and 1.2 V min supply | Optimized for ultra-long-life applications (e.g., 10+ year gas meters) where bandwidth is secondary | Select for extreme energy harvesting or maintenance-free deployments; requires re-optimization of feedback network |
Compared with TLV9042IDDFR, TLV9002IDR trades 6× higher quiescent current for 3× bandwidth, while LPV821DRX reduces current by 15× at the cost of 98% bandwidth loss-enabling precise selection based on system-level power/speed trade-offs.
Availability
TLV9042IDDFR is available at Aetrix Electronics and suitable for wearable electronics, building automation, and electronic point-of-sale (EPOS) systems requiring stable component supply across multi-year production cycles.
Supply support for TLV9042IDDFR 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLV904x family was designed specifically for ultra-low-voltage, micro-power signal conditioning in battery-operated IoT endpoints-prioritizing 1.2 V operation, sub-10 µA quiescent current, and robust EMI immunity without sacrificing precision.
FAQ
What is the minimum supply voltage for TLV9042IDDFR?
The TLV9042IDDFR operates down to 1.2 V, making it one of the few operational amplifiers capable of direct interface with 1.5 V coin-cell batteries. This specification is guaranteed across the full –40°C to +125°C temperature range and is validated per TI's SBOS836H datasheet Section 6.3. The device remains fully functional-including rail-to-rail input/output and 350 kHz gain-bandwidth-at this minimum supply.
Does TLV9042IDDFR support rail-to-rail input and output?
Yes, TLV9042IDDFR supports true rail-to-rail input and output operation. Its input common-mode range extends from V– to V+, and its output swings within 1 mV of either rail under light load conditions (100 kΩ to VS/2) at 5.5 V supply. At 1.2 V supply, output headroom is 0.75–7 mV from each rail. These values are measured per Section 6.7 of the official datasheet and enable maximum dynamic range in low-voltage ADC interfacing.
What is the quiescent current of TLV9042IDDFR per channel?
The TLV9042IDDFR draws 10 µA per channel at 5.5 V supply and 25°C, with a maximum of 13.5 µA across –40°C to +125°C. This value is specified in Section 6.7 (Power Supply) of the SBOS836H datasheet. The dual-channel configuration means total device IQ is 20 µA (typical), enabling multi-year battery life in always-on wearable and sensor applications.
Is TLV9042IDDFR unity-gain stable?
Yes, TLV9042IDDFR is unity-gain stable and can drive up to 100 pF of capacitive load without external compensation. This is confirmed in the "Features" section and validated in Figure 6-29 and Figure 6-31 of the SBOS836H datasheet, which show stable phase margin (>65°) and minimal overshoot at G = 1 with CL = 100 pF. No isolation resistor is required for typical sensor or ADC driver applications.
What package type is used for TLV9042IDDFR?
TLV9042IDDFR uses the DDF package: an 8-pin SOT-23-THN variant with dimensions of 2.9 mm × 2.8 mm and an exposed thermal pad. As shown in Figure 5-6 and Table 5-3 of the SBOS836H datasheet, the thermal pad must be soldered to V– for optimal thermal performance. This package is distinct from SOIC (D), VSSOP (DGK), or WSON (DSG) variants of the TLV9042 family.
TLV9042IDDFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.2V/µs
- Gain Bandwidth Product:
- 350 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 10µA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 1.2 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
TLV9042IDDFR FAQ
1.How can I place an order for TLV9042IDDFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV9042IDDFR 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 TLV9042IDDFR reliable?
The price and inventory of TLV9042IDDFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV9042IDDFR is usually 5 days.
3.What payment methods are accepted for TLV9042IDDFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV9042IDDFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV9042IDDFR?
TLV9042IDDFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV9042IDDFR 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 TLV9042IDDFR?
For technical support, including TLV9042IDDFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV9042IDDFR requirements.
6.How does Aetrix verify that TLV9042IDDFR is sourced from the original manufacturer or authorized distributors?
All TLV9042IDDFR 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 TLV9042IDDFR meets industry standards.
7.What is the process for return or replacement of TLV9042IDDFR?
All TLV9042IDDFR units undergo pre-shipment inspection (PSI). If there is an issue with TLV9042IDDFR, 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 TLV9042IDDFR part is unused and in its original packaging.
Return procedure for TLV9042IDDFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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