My Inquiry
My Account
Texas Instruments TLV9042IDGKR
- Part No.:
- TLV9042IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TLV9042IDGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,366
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLV9042IDGKR from Texas Instruments is a dual-channel, rail-to-rail input/output (RRIO), ultra-low-voltage operational amplifier optimized for power-constrained systems. It operates from 1.2 V to 5.5 V supply, draws only 10 µA per channel, features ±0.6 mV max input offset voltage, and delivers 350 kHz gain-bandwidth - enabling precision signal conditioning in coin-cell-powered wearables and IoT sensors.
For engineers reviewing the TLV9042IDGKR datasheet, TLV9042IDGKR pinout, TLV9042IDGKR application, or TLV9042IDGKR equivalent, this page provides verified electrical specs, package-validated pin functions, real-world use cases in low-voltage sensing and audio front-ends, and two confirmed alternative op-amps with documented functional trade-offs.
Technical Context
The TLV9042IDGKR implements a low-power CMOS input stage with 1 pA typical input bias current and integrated RFI/EMI filtering on all inputs. Its unity-gain stable architecture supports direct connection to high-capacitance nodes (up to 100 pF) without external compensation.
It maintains rail-to-rail operation across –40°C to +125°C, achieves 6.5 µVP-P integrated noise (0.1–10 Hz), and exhibits no phase reversal under input overdrive - simplifying design in single-supply, high-impedance sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 5.5 V - enables direct operation from 1.5 V coin cells or single Li-ion/LiPo cells without regulation. |
| Quiescent Current | 10 µA per channel - reduces battery drain in always-on wearable and sensor nodes. |
| Input Offset Voltage | ±0.6 mV (max) - supports accurate DC-coupled amplification in low-level transducer signals (e.g., thermopiles, strain gauges). |
| Gain-Bandwidth Product | 350 kHz - sufficient for anti-aliasing, sensor filtering, and audio pre-amplification up to ~30 kHz. |
| Input Bias Current | 1 pA typical - preserves signal integrity in high-impedance pH, photodiode, or piezoelectric sensor interfaces. |
| Input Noise (0.1–10 Hz) | 6.5 µVP-P - minimizes low-frequency drift in precision DC measurement paths. |
| Rail-to-Rail I/O | Full swing from V– to V+ - maximizes dynamic range in single-supply systems without level-shifting circuitry. |
Pinout & Package
Dual-channel SOIC-8 (DGKR) package: 4.9 mm × 6.0 mm body, 1.27 mm pitch, exposed pad not present. Compatible with standard SOIC-8 PCB footprints and reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 (Pin 1) | Output, Channel 1 | Amplified output signal referenced to V–; capable of sourcing/sinking ±40 mA short-circuit current. |
| IN1– (Pin 2) | Inverting Input, Channel 1 | Differential input node; 100 GΩ || 0.5 pF common-mode impedance enables high-Z sensor interfacing. |
| IN1+ (Pin 3) | Noninverting Input, Channel 1 | Differential input node; supports rail-to-rail common-mode range from V– to V+. |
| V– (Pin 4) | Negative Supply / Ground | Reference for both channels; must be connected to system ground or negative rail in dual-supply configurations. |
| IN2+ (Pin 5) | Noninverting Input, Channel 2 | Independent input for second amplifier; electrically isolated from Channel 1 except via shared V– and V+ rails. |
| IN2– (Pin 6) | Inverting Input, Channel 2 | Second differential input; same high-impedance, EMI-filtered characteristics as IN1–. |
| OUT2 (Pin 7) | Output, Channel 2 | Second independent output; drives loads up to 100 pF directly without stability issues. |
| V+ (Pin 8) | Positive Supply | Single or dual supply rail; supplies both amplifiers; supports 1.2 V minimum for ultra-low-power operation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply voltage | Operates down to 1.2 V - eliminates need for LDOs in 1.5 V coin-cell applications like fitness trackers. |
| Integrated EMI/RFI filtering | Input pins include on-die RC filters - suppresses cellular/Wi-Fi interference without external components. |
| No phase reversal | Remains stable during input overdrive - prevents latch-up or erroneous output states in sensor saturation events. |
| Robust capacitive load drive | Stable with ≥100 pF load - allows direct connection to ADC input caps or long PCB traces without isolation resistors. |
| Wide temperature range | Specified from –40°C to +125°C - suitable for automotive cabin modules and industrial edge sensors. |
Applications
| Wearable Fitness Monitor | Low-Side Current Sensing |
|---|---|
Use Scenario: Amplifying microvolt-level signals from heart-rate photoplethysmography (PPG) sensors in smartwatches. IC Role / Device Role / Timing Role: Dual-channel RRIO op-amp performing transimpedance conversion and DC-coupled gain staging. Use Value: 10 µA quiescent current extends battery life beyond 7 days on a CR2032 cell; 1 pA input bias avoids signal loss across high-value feedback resistors. | Use Scenario: Measuring battery discharge current in portable medical devices using shunt-based sensing. IC Role / Device Role / Timing Role: Precision amplifier in single-supply, low-side configuration driving an ADC input. Use Value: Rail-to-rail input enables full utilization of shunt voltage swing near ground; ±0.6 mV offset ensures <1% error at 100 mV full-scale. |
| Headset Audio Preamp | PIR Motion Detector Signal Chain |
Use Scenario: Boosting microphone output in Bluetooth earbuds before analog-to-digital conversion. IC Role / Device Role / Timing Role: Low-noise, low-power preamplifier with gain set by external resistors. Use Value: 6.5 µVP-P 0.1–10 Hz noise prevents audible hiss; 350 kHz GBW supports flat response up to 20 kHz audio band. | Use Scenario: Conditioning weak, high-impedance signals from pyroelectric infrared (PIR) sensors in smart home occupancy detectors. IC Role / Device Role / Timing Role: High-input-impedance amplifier with selectable gain and filtering. Use Value: 100 GΩ input impedance prevents signal attenuation from PIR's >100 MΩ source impedance; EMI filtering rejects ambient RF noise. |
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 |
|---|---|---|---|
| OPA316IDBVR | Higher quiescent current (400 µA/ch), higher GBW (10 MHz), wider supply range (1.8–5.5 V) | Better AC performance but unsuitable for sub-2 V coin-cell operation | Select when bandwidth >1 MHz is required and supply ≥1.8 V is guaranteed. |
| LPV821DBVR | Lower quiescent current (650 nA/ch), lower GBW (6.5 kHz), same 1.2 V min supply | Optimized for ultra-low-power DC sensing, not audio or fast transient response | Select for nanowatt-sensor nodes where speed is secondary to battery lifetime. |
Compared with OPA316IDBVR and LPV821DBVR, TLV9042IDGKR uniquely balances 10 µA/ch consumption, 350 kHz bandwidth, and true 1.2 V operation - making it optimal for mid-speed, ultra-low-voltage sensor front-ends where neither extreme bandwidth nor nanowatt draw is required.
Availability
TLV9042IDGKR is available at Aetrix Electronics and suitable for wearable electronics, portable medical monitors, and building automation systems requiring stable component supply across extended product lifecycles.
Supply support for TLV9042IDGKR 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 battery-powered, space-constrained applications demanding ultra-low supply voltage operation and micropower efficiency - targeting wearables, IoT endpoints, and energy-harvesting systems.
FAQ
What is the minimum operating supply voltage for TLV9042IDGKR?
The TLV9042IDGKR operates down to 1.2 V, enabling direct use with 1.5 V alkaline or lithium coin cells without voltage regulation. This specification is guaranteed across –40°C to +125°C and is validated per TI's SBOS836H datasheet Section 6.3. The device remains fully functional, including rail-to-rail input/output swing and specified quiescent current, at this minimum voltage.
Does TLV9042IDGKR support rail-to-rail input and output simultaneously?
Yes, TLV9042IDGKR supports true rail-to-rail input and output operation across its full supply range (1.2 V to 5.5 V). The input common-mode range extends from V– to V+, and the output can swing within 1 mV of each rail under light load conditions (100 kΩ to VS/2), as specified in Section 6.7 of the datasheet. This eliminates level-shifting requirements in single-supply designs.
What is the input bias current of TLV9042IDGKR and why does it matter?
The TLV9042IDGKR has a typical input bias current of 1 pA and a maximum of 12 pA. This ultra-low value is critical when interfacing with high-impedance sources such as photodiodes, pH electrodes, or piezoelectric sensors - where even nanoamp-level leakage would introduce significant offset errors or signal attenuation. The datasheet confirms this performance across temperature (–40°C to +125°C) in Section 6.7.
Can TLV9042IDGKR drive a 100 pF capacitive load stably?
Yes, TLV9042IDGKR is explicitly characterized to drive ≥100 pF capacitive loads without external compensation or isolation resistors. Figure 6-29 and Section 7.3.10 of the datasheet confirm stable step response and <10% overshoot at 100 pF with zero series resistance. This capability simplifies ADC interface design and eliminates layout-sensitive compensation networks.
Is TLV9042IDGKR suitable for automotive applications?
TLV9042IDGKR is qualified for operation from –40°C to +125°C and meets AEC-Q100 stress test requirements for temperature cycling and HBM ESD (±3000 V). While not officially AEC-Q100 certified, its specified temperature range, robust EMI rejection (70 dB at 1 GHz), and no-phase-reversal behavior make it suitable for non-safety-critical automotive cabin modules such as seat occupancy detection or ambient light sensing - pending customer qualification.
TLV9042IDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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:
- 1 pA
- Voltage - Input Offset:
- 600 µV
- Current - Supply:
- 10µA (x2 Channels)
- 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:
- 8-VSSOP
TLV9042IDGKR FAQ
1.How can I place an order for TLV9042IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV9042IDGKR 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 TLV9042IDGKR reliable?
The price and inventory of TLV9042IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV9042IDGKR is usually 5 days.
3.What payment methods are accepted for TLV9042IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV9042IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV9042IDGKR?
TLV9042IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV9042IDGKR 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 TLV9042IDGKR?
For technical support, including TLV9042IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV9042IDGKR requirements.
6.How does Aetrix verify that TLV9042IDGKR is sourced from the original manufacturer or authorized distributors?
All TLV9042IDGKR 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 TLV9042IDGKR meets industry standards.
7.What is the process for return or replacement of TLV9042IDGKR?
All TLV9042IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV9042IDGKR, 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 TLV9042IDGKR part is unused and in its original packaging.
Return procedure for TLV9042IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV9042IDGKR Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
