My Inquiry
My Account
Analog Devices Inc. LT6234IDD#PBF
- Part No.:
- LT6234IDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT6234IDD#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,274
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT6234IDD#PBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail output, low-noise, unity-gain stable operational amplifier in an 8-lead 3mm × 3mm DFN package. It delivers 1.9nV/√Hz input voltage noise, 60MHz gain-bandwidth product, and 1.2mA per amplifier supply current across –40°C to 85°C, enabling high-fidelity signal conditioning in portable ultrasound front-ends and precision A/D driver stages.
For engineers reviewing the LT6234IDD#PBF datasheet, LT6234IDD#PBF pinout, LT6234IDD#PBF application, or LT6234IDD#PBF equivalent, key selection criteria include its dual-channel layout with independent enable control, guaranteed rail-to-rail output swing within 50mV of rails at 3.3V/5V supplies, and matched channel performance for differential signal paths requiring <1000µV offset voltage match.
Technical Context
The LT6234IDD#PBF implements a complementary bipolar input stage optimized for low voltage noise and low power, with internal compensation ensuring stability at unity gain. Its dual architecture shares a common V+ and V– supply but features fully independent input/output pairs and dedicated ENABLE pins per channel, supporting asynchronous power gating.
It operates from 3V to 12.6V total supply, supports ±1.5V to ±5V split supplies, and maintains 115dB typical CMRR and 115dB PSRR over frequency - critical for rejecting supply and common-mode interference in high-resolution sensor interfaces and active filter topologies.
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 - supports closed-loop gains up to 10 with >6MHz bandwidth for anti-aliasing filters |
| Supply Current per Amp | 1.2mA max - allows dual-channel operation under 2.5mA total, suitable for battery-powered instrumentation |
| Output Swing | Within 50mV of rails at 3.3V/5V - maximizes dynamic range in low-voltage ADC driver applications |
| Input Offset Voltage Match | 1000µV max (–40°C to 85°C) - ensures consistent differential gain in instrumentation amplifier configurations |
| Common Mode Rejection | 115dB typ - suppresses ECG/EEG electrode potential variations in medical front-ends |
| Enable Pin Threshold | VH = V+ – 0.2V, VL = 0.3V - compatible with standard logic-level control without level-shifting circuitry |
Pinout & Package
LT6234IDD#PBF is housed in an 8-lead (3mm × 3mm) plastic DFN package with underside thermal pad connected to V–. The package supports high-density PCB layouts and provides θJA = 160°C/W thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT A | Amplifier A output | Capable of sourcing/sinking 30mA; rail-to-rail swing enables direct interface to SAR ADC reference buffers |
| 2: –IN A | Inverting input A | Differential pair input node; 22MΩ common-mode resistance minimizes bias current error in high-Z sensor interfaces |
| 3: +IN A | Non-inverting input A | Matches –IN A in offset and drift; used for unity-gain buffer or precision inverting amplifier configurations |
| 4: V– | Negative supply / thermal pad reference | Internally tied to exposed metal pad; must be soldered to PCB ground plane for thermal and noise performance |
| 5: V+ | Positive supply | Accepts 3V–12.6V single supply or ±1.5V–±5V split supply; PSRR >90dB reduces supply ripple coupling |
| 6: OUT B | Amplifier B output | Independent output with identical specs to OUT A; enables dual-path signal processing without crosstalk degradation |
| 7: –IN B | Inverting input B | Matched to –IN A; supports simultaneous differential channel processing in data acquisition systems |
| 8: +IN B | Non-inverting input B | Provides second independent high-impedance input path; enables dual-channel instrumentation amplifier front-end |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full-scale signal headroom at 3.3V supply - eliminates need for level-shifting in low-voltage ADC drivers |
| 1.9nV/√Hz input voltage noise | Enables detection of microvolt-level bio-signals (e.g., EEG, EMG) without degrading SNR in first-stage amplification |
| Independent ENABLE pins per channel | Allows selective power-down of unused amplifier - reduces idle current to <1.5µA per channel in battery-critical modes |
| 60MHz GBW with unity-gain stability | Supports wideband active filters (e.g., 2nd-order Butterworth up to 10MHz) without external compensation components |
| 115dB CMRR and PSRR | Maintains accuracy in noisy industrial environments where supply ripple or ground bounce would otherwise corrupt low-level measurements |
Applications
| Ultrasound Receiver Front-End | Low-Power Data Acquisition System |
|---|---|
Use Scenario: Amplifying weak echo signals from piezoelectric transducers in portable ultrasound devices operating from 3.3V batteries. IC Role / Device Role / Timing Role: Dual-channel low-noise preamplifier with independent enable control for time-gated receive paths. Use Value: 1.9nV/√Hz noise density preserves weak echo SNR; rail-to-rail output drives 12-bit SAR ADC directly without gain loss. | Use Scenario: Signal conditioning for multi-channel environmental sensors (temperature, pressure, gas) in wireless IoT nodes. IC Role / Device Role / Timing Role: Dual op-amp providing programmable gain and anti-aliasing filtering before multiplexed ADC sampling. Use Value: 60MHz GBW supports 10MHz filter cutoffs; 1.2mA/Amp supply current extends battery life beyond 1 year in sleep-wake cycles. |
| Medical Instrumentation Amplifier | Rail-to-Rail Buffer for Precision ADCs |
Use Scenario: Building 3-op-amp instrumentation amplifiers for ECG/EMG measurement with high common-mode rejection. IC Role / Device Role / Timing Role: Dual amplifier serving as matched gain-stage and output buffer in discrete IA topology. Use Value: 1000µV max input offset voltage match between channels ensures <0.01% gain error in differential configurations. | Use Scenario: Driving the reference input or analog input of precision 16-bit successive-approximation ADCs (e.g., LTC23xx series). IC Role / Device Role / Timing Role: Unity-gain buffer isolating ADC input from source impedance and maintaining full-scale linearity. Use Value: Rail-to-rail output swing ensures 0–3.3V or 0–5V full-scale compliance; 30mA output current drives heavy capacitive loads without settling delay. |
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 |
|---|---|---|---|
| AD8622ARMZ | Lower noise (1.3nV/√Hz), higher supply current (2.5mA/Amp), SOIC-8 only | Better SNR in ultra-low-noise applications; unsuitable for space-constrained DFN layouts | Select when noise dominates power budget and board area permits SOIC-8 footprint |
| OPA2350UA | Higher GBW (38MHz), lower quiescent current (1.0mA/Amp), same DFN-8 package | Lower bandwidth limits anti-aliasing filter cutoff; better for always-on low-power monitoring | Select when 38MHz GBW suffices and sub-2mA total current is mandatory for energy harvesting designs |
Compared with AD8622ARMZ and OPA2350UA, the LT6234IDD#PBF uniquely balances 60MHz bandwidth, 1.9nV/√Hz noise, and DFN-8 form factor - making it optimal for portable medical devices requiring both speed and fidelity in minimal PCB area.
Availability
LT6234IDD#PBF is available at Aetrix Electronics and suitable for portable ultrasound systems, battery-powered data loggers, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT6234IDD#PBF 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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, acquired Linear Technology in 2017 to strengthen its precision signal chain portfolio.
The LT6234 belongs to ADI's legacy Linear Technology precision op amp family, designed specifically for low-noise, low-power, rail-to-rail signal conditioning in medical, test equipment, and portable instrumentation applications.
FAQ
What is the operating temperature range for the LT6234IDD#PBF?
The LT6234IDD#PBF is specified for operation from –40°C to +85°C, with electrical characteristics guaranteed across this full industrial temperature range. This makes LT6234IDD#PBF suitable for deployment in outdoor medical devices, automotive diagnostics tools, and industrial sensor nodes exposed to ambient thermal extremes.
Does the LT6234IDD#PBF support single-supply operation?
Yes, the LT6234IDD#PBF supports single-supply operation from 3V to 12.6V total supply voltage. Its rail-to-rail output stage and input common-mode range extending to within 1.15V of V– (at 3.3V supply) allow clean signal amplification in 3.3V or 5V systems without negative supply rails - a key advantage in LT6234IDD#PBF-based portable designs.
How does the ENABLE pin function on the LT6234IDD#PBF?
The LT6234IDD#PBF features two independent ENABLE pins - one per amplifier - with logic thresholds of VL ≤ 0.3V (disable) and VH ≥ V+ – 0.2V (enable). When disabled, supply current drops to ≤1.5µA per channel, allowing dynamic power management. This dual-enable capability is integral to LT6234IDD#PBF's use in time-multiplexed signal chains like ultrasound beamforming.
What is the maximum output current capability of the LT6234IDD#PBF?
The LT6234IDD#PBF delivers ±30mA continuous output current per amplifier, with short-circuit current rated at ±30mA (–40°C to 85°C). This enables direct driving of moderate capacitive loads (e.g., ADC input capacitance + PCB trace) and resistive loads down to 100Ω while maintaining rail-to-rail swing - a verified specification for LT6234IDD#PBF in high-speed data acquisition reference designs.
Is the LT6234IDD#PBF pin-compatible with other packages in the LT623x family?
No, the LT6234IDD#PBF uses an 8-lead DFN (3mm × 3mm) package with exposed V– pad, which is not pin-compatible with the 8-lead SOIC (S8) variant LT6234IS8#PBF. While both share identical pin functions, the DFN requires different PCB layout, thermal via placement, and reflow profile - a distinction critical to successful LT6234IDD#PBF integration in high-density designs.
LT6234IDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tube
- 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-DFN (3x3)
LT6234IDD#PBF FAQ
1.How can I place an order for LT6234IDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6234IDD#PBF 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 LT6234IDD#PBF reliable?
The price and inventory of LT6234IDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6234IDD#PBF is usually 5 days.
3.What payment methods are accepted for LT6234IDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6234IDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6234IDD#PBF?
LT6234IDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6234IDD#PBF 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 LT6234IDD#PBF?
For technical support, including LT6234IDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6234IDD#PBF requirements.
6.How does Aetrix verify that LT6234IDD#PBF is sourced from the original manufacturer or authorized distributors?
All LT6234IDD#PBF 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 LT6234IDD#PBF meets industry standards.
7.What is the process for return or replacement of LT6234IDD#PBF?
All LT6234IDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6234IDD#PBF, 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 LT6234IDD#PBF part is unused and in its original packaging.
Return procedure for LT6234IDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT6234IDD#PBF 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…
