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Analog Devices Inc. LT6234IS8#TRPBF
- Part No.:
- LT6234IS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT6234IS8#TRPBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
LT6234IS8#TRPBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail output, low-noise operational amplifier optimized for precision signal conditioning in low-voltage systems. It delivers 1.9nV/√Hz input voltage noise, 60MHz gain-bandwidth product at unity gain, 17V/µs slew rate, and operates from 3V to 12.6V supplies - enabling high-fidelity amplification in ultrasound front-ends and A/D driver stages.
For engineers reviewing the LT6234IS8#TRPBF datasheet, LT6234IS8#TRPBF pinout, LT6234IS8#TRPBF application, or LT6234IS8#TRPBF equivalent, key selection criteria include its guaranteed –40°C to 85°C industrial temperature range, dual-channel SO-8 package with standard op amp pinout, 350µV max input offset voltage, and enable-pin support for power-gated operation in battery-sensitive designs.
Technical Context
The LT6234IS8#TRPBF implements a fully differential, unity-gain stable voltage-feedback architecture with complementary bipolar input transistors, achieving ultra-low 1.9nV/√Hz noise density while maintaining only 1.2mA per amplifier supply current. Its rail-to-rail output stage swings within 50mV of either supply rail under 15mA load, maximizing dynamic range in 3.3V and ±2.5V systems.
It features an integrated ENABLE pin (Pin 5) that reduces quiescent current to ≤10µA when asserted, supporting low-power wake-up architectures. Channel-to-channel matching includes 80µV max input offset voltage match and 115dB typical CMRR, making it suitable for dual-path instrumentation and active filter topologies requiring tight gain and phase tracking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Noise Voltage Density | 1.9nV/√Hz at 10kHz - enables sub-µV signal amplification without dominating system noise floor |
| Gain-Bandwidth Product | 60MHz at AV ≥ 1 - supports stable unity-gain buffers and 2nd-order active filters up to ~10MHz |
| Slew Rate | 17V/µs - ensures <175ns 0.1% settling for 2V step, critical for driving SAR ADC inputs |
| Supply Range | 3V to 12.6V - compatible with single-supply 3.3V/5V logic and split-supply ±2.5V analog domains |
| Output Swing | Within 50mV of rails at 15mA - preserves >97% of full-scale range in 3.3V systems |
| Input Offset Voltage | 350µV max (–40°C to 85°C) - minimizes DC error in precision transimpedance and sensor interfaces |
| CMRR | 115dB typical - rejects common-mode interference in noisy industrial environments |
Pinout & Package
LT6234IS8#TRPBF is housed in an 8-lead plastic SO (S8) package with JEDEC-standard op amp pinout and 1.27mm lead pitch. The package is RoHS-compliant, tape-and-reel packaged, and rated for 150°C maximum junction temperature (θJA = 190°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 30mA; rail-to-rail swing enables direct interface to 12-bit+ ADC references |
| 2 | –IN A | Inverting input A - high-impedance node (22MΩ common-mode) for feedback network connection |
| 3 | +IN A | Non-inverting input A - matched to –IN A for <80µV offset mismatch in differential configurations |
| 4 | V– | Negative supply rail - internally tied to exposed pad (optional PCB connection); reference for output swing limits |
| 5 | ENABLE | Active-low shutdown control - pulls supply current to ≤10µA; requires V– + 0.3V logic low |
| 6 | +IN B | Non-inverting input B - electrically isolated from Channel A; supports independent dual-path signal chains |
| 7 | –IN B | Inverting input B - matched to +IN B; enables identical gain/phase response as Channel A |
| 8 | OUT B | Amplifier B output - identical AC/DC specs to OUT A; allows synchronous dual-channel buffering or filtering |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full dynamic range in 3.3V systems - eliminates need for level-shifting or supply boosting |
| Ultra-low 1.9nV/√Hz noise | Preserves SNR in low-level sensor amplification (e.g., piezoelectric ultrasound receivers) |
| Enable pin with 10µA shutdown | Reduces system standby power by >99% - essential for portable medical and IoT edge devices |
| 60MHz GBW with unity-gain stability | Supports wideband active filters and fast-settling ADC drivers without external compensation |
| 115dB CMRR & 80µV channel match | Enables accurate differential signal processing and matched dual-path timing-critical circuits |
Applications
| Ultrasound Signal Amplification | Low-Power Sensor Interface |
|---|---|
Use Scenario: Amplifying weak, high-frequency echo signals from piezoelectric transducers in portable ultrasound machines. IC Role / Device Role / Timing Role: Dual-channel low-noise preamplifier with matched gain paths for beamforming and time-of-flight analysis. Use Value: 1.9nV/√Hz noise floor and 60MHz bandwidth preserve signal integrity up to 15MHz transducer harmonics. | Use Scenario: Conditioning outputs from MEMS accelerometers and strain gauges in battery-powered condition monitoring nodes. IC Role / Device Role / Timing Role: Rail-to-rail I/V converter and anti-aliasing filter driver operating from 3.3V coin-cell supply. Use Value: 1.2mA per amplifier supply current and ENABLE pin reduce average power to <50µA in sleep mode. |
| High-Speed ADC Driver | Rail-to-Rail Buffer Stage |
Use Scenario: Driving the input of 16-bit SAR ADCs (e.g., LTC2378-16) with minimal distortion and settling delay. IC Role / Device Role / Timing Role: Unity-gain buffer with 17V/µs slew rate and <175ns 0.1% settling to meet sampling aperture requirements. Use Value: Output swing within 50mV of rails ensures full utilization of ADC reference range, maximizing ENOB. | Use Scenario: Isolating sensitive analog sources (e.g., DAC outputs, reference voltages) from varying downstream loads. IC Role / Device Role / Timing Role: Low-offset, low-noise unity-gain follower with high PSRR (>115dB) to reject supply ripple. Use Value: 350µV max VOS and 115dB PSRR maintain DC accuracy and AC rejection across 3V–12.6V supply variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4897-2ARMZ | Lower 1.0nV/√Hz noise but higher 3.5mA supply current; no ENABLE pin; 220MHz GBW | Better for ultra-low-noise, high-bandwidth applications where power is secondary | Select when noise floor dominates over power budget - not drop-in due to missing shutdown control |
| OPA2350UA | Higher 7nV/√Hz noise; 38MHz GBW; rail-to-rail I/O; no ENABLE; 5.5mA supply current | Suitable for cost-sensitive general-purpose buffering where noise <5nV/√Hz is acceptable | Choose for non-critical signal paths where footprint compatibility (SO-8) matters more than noise or power |
Compared with ADA4897-2ARMZ and OPA2350UA, the LT6234IS8#TRPBF uniquely balances ultra-low noise (1.9nV/√Hz), low power (1.2mA), and integrated ENABLE functionality in a standard SO-8 package - making it optimal for portable, battery-constrained, high-fidelity analog front-ends.
Availability
LT6234IS8#TRPBF is available at Aetrix Electronics and suitable for ultrasound imaging systems, portable medical sensors, and high-speed data acquisition requiring stable component supply across industrial temperature ranges.
Supply support for LT6234IS8#TRPBF 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
Analog Devices acquired Linear Technology in 2017 and maintains its high-performance analog portfolio, renowned for precision amplifiers, power management ICs, and signal chain solutions.
The LT6234IS8#TRPBF belongs to the LT623x family of low-noise, low-power, rail-to-rail op amps designed specifically for high-fidelity signal conditioning in space- and power-constrained applications such as medical imaging and portable instrumentation.
FAQ
What is the operating temperature range for LT6234IS8#TRPBF?
The LT6234IS8#TRPBF is specified for continuous operation from –40°C to +85°C, meeting industrial-grade reliability requirements. This range is guaranteed by production testing and applies to all electrical parameters including input offset voltage (700µV max), CMRR (90dB min), and supply current (1.0–1.5mA per amplifier) across the full span.
Does LT6234IS8#TRPBF support rail-to-rail input common-mode range?
No, the LT6234IS8#TRPBF features rail-to-rail *output* swing but not rail-to-rail input. Its input common-mode voltage range is specified as 1.15V to 2.65V on 3.3V supplies and –3V to 4V on ±5V supplies - limited by internal biasing. Input signals must stay within these bounds to avoid clipping or increased distortion.
Can LT6234IS8#TRPBF drive capacitive loads directly?
The LT6234IS8#TRPBF can safely drive up to 100pF capacitive loads without external isolation resistance, as verified in typical performance plots (G26/G27). For larger loads (>100pF), a series resistor (10–50Ω) between output and capacitance is recommended to prevent peaking or oscillation - especially in unity-gain configurations.
What is the ENABLE pin behavior during power-up for LT6234IS8#TRPBF?
The ENABLE pin (Pin 5) is active-low and defaults to enabled (amplifier operational) when left open or pulled high. During power-up, if ENABLE is held low (<0.3V), the device remains in shutdown (≤10µA supply current) until the pin rises above V+ – 0.2V. No power-on reset circuitry is required - behavior is monotonic and glitch-free.
How does LT6234IS8#TRPBF compare to LT6234CS8#TRPBF?
The LT6234IS8#TRPBF and LT6234CS8#TRPBF share identical SO-8 packaging and pinout, but differ in temperature grading: the 'I' grade is tested and guaranteed from –40°C to +85°C, while the 'C' grade is only specified from 0°C to +70°C. Electrical parameters like input offset voltage (350µV vs 500µV max) and supply current drift are tighter for the 'I' version across the extended range.
LT6234IS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 17V/µs
- Gain Bandwidth Product:
- 60 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1.5 µA
- Voltage - Input Offset:
- 75 µV
- Current - Supply:
- 1.05mA (x2 Channels)
- Current - Output / Channel:
- 55 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT6234IS8#TRPBF FAQ
1.How can I place an order for LT6234IS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6234IS8#TRPBF 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 LT6234IS8#TRPBF reliable?
The price and inventory of LT6234IS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6234IS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6234IS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6234IS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6234IS8#TRPBF?
LT6234IS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6234IS8#TRPBF 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 LT6234IS8#TRPBF?
For technical support, including LT6234IS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6234IS8#TRPBF requirements.
6.How does Aetrix verify that LT6234IS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6234IS8#TRPBF 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 LT6234IS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6234IS8#TRPBF?
All LT6234IS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6234IS8#TRPBF, 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 LT6234IS8#TRPBF part is unused and in its original packaging.
Return procedure for LT6234IS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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