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Analog Devices Inc. LT6235CGN#PBF
- Part No.:
- LT6235CGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LT6235CGN#PBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,170
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Product details
Overview
LT6235CGN#PBF from Analog Devices (formerly Linear Technology) is a quad, rail-to-rail output, low-noise, unity-gain stable operational amplifier in a 16-pin narrow SSOP package. It delivers 1.9nV/√Hz input voltage noise, 60MHz gain-bandwidth product per amplifier, 1.2mA supply current per channel, and operates from 3V to 12.6V supplies - enabling high-fidelity signal conditioning in ultrasound front-ends and precision A/D driver stages.
For engineers reviewing the LT6235CGN#PBF datasheet, LT6235CGN#PBF pinout, LT6235CGN#PBF application, or LT6235CGN#PBF equivalent, this page provides verified pin functions, real-world settling time (170ns @ 0.1%), rail-to-rail output swing (within 50mV of rails), CMRR (115dB typ), and validated alternatives for multi-channel low-noise amplifier design.
Technical Context
The LT6235CGN#PBF integrates four independent amplifiers optimized for low-voltage, low-noise signal chains. Each channel features matched input offset voltage (≤450µV max), balanced noise performance (1.9nV/√Hz at 10kHz), and full-power bandwidth up to 1.27MHz (±5V supply). Its enable pin supports power gating with <10µA shutdown current per channel.
Designed for unity-gain stability and rail-to-rail output swing, the device maintains 115dB CMRR and 115dB PSRR across its –40°C to 85°C operating range. The 16-pin GN package supports compact layout while preserving channel isolation - critical for multi-channel instrumentation and active filter topologies requiring tight matching.
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 per amplifier - supports stable unity-gain buffers and 2nd-order active filters up to ~10MHz |
| Supply Current per Amp | 1.2mA max - allows four-channel operation under 5mA total, ideal for battery-powered portable instruments |
| Output Swing | Within 50mV of rails (at 15mA load) - maximizes dynamic range in 3.3V and ±2.5V systems |
| Common Mode Rejection | 115dB typical - rejects supply and ground noise in single-supply sensor interfaces |
| Settling Time | 170ns to 0.1% for 2V step - meets timing requirements for 5MSPS+ SAR ADC drivers |
| Operating Temperature | –40°C to 85°C - qualified for industrial and medical equipment environments |
Pinout & Package
LT6235CGN#PBF is housed in a 16-lead narrow plastic SSOP (GN) package, 4.4mm × 5.0mm, 0.635mm pitch. Thermal resistance θJA = 135°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 30mA with rail-to-rail swing |
| 2 | –IN A | Inverting input for Amp A - matched to +IN A for ≤80µV offset voltage match |
| 3 | +IN A | Non-inverting input for Amp A - 22MΩ common-mode input resistance |
| 4 | V+ | Positive supply rail - accepts 3V to 12.6V; powers all four amplifiers |
| 5 | +IN B | Non-inverting input for Amp B - electrically isolated from Amp A for >100dB channel separation |
| 6 | –IN B | Inverting input for Amp B - matched to +IN B for consistent common-mode rejection |
| 7 | OUT B | Amplifier B output - identical AC/DC specs to OUT A; supports independent feedback networks |
| 8 | NC | No connect - internal die pad not bonded; must remain unconnected on PCB |
| 9 | OUT D | Amplifier D output - fourth channel; shares V– and V+ with other amps |
| 10 | –IN D | Inverting input for Amp D - part of matched pair with +IN D for low offset drift |
| 11 | +IN D | Non-inverting input for Amp D - supports differential input configurations with Amp C |
| 12 | V– | Negative supply rail - referenced to ground in single-supply mode or negative rail in dual-supply |
| 13 | +IN C | Non-inverting input for Amp C - enables simultaneous 4-channel acquisition with matched gain paths |
| 14 | –IN C | Inverting input for Amp C - used in inverting gain stages or as summing node |
| 15 | OUT C | Amplifier C output - fully independent; supports separate load and feedback components |
| 16 | NC | No connect - unused pin; no internal connection; leave floating |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full dynamic range in 3.3V systems - output reaches within 50mV of V+ and V– at 15mA load |
| Low 1.9nV/√Hz noise density | Preserves SNR in front-end amplification of µV-level transducer signals (e.g., ultrasound, strain gauges) |
| Quad amplifier integration | Reduces board space and inter-channel mismatch vs discrete op-amp solutions - critical for active filter banks |
| Enable pin per amplifier group | Allows selective shutdown of unused channels to cut quiescent current below 10µA per disabled amp |
| 115dB CMRR & PSRR | Minimizes error from supply ripple and ground bounce in mixed-signal PCBs with shared power domains |
| 170ns 0.1% settling time | Supports accurate sampling of fast transient signals into 5MSPS+ SAR ADCs without post-conversion correction |
Applications
| Ultrasound Signal Conditioning | Low-Noise Sensor Interface |
|---|---|
|
Use Scenario: Amplifying weak analog signals from piezoelectric transducers in portable ultrasound probes. IC Role / Device Role / Timing Role: Quad LT6235CGN#PBF serves as four parallel low-noise preamplifiers, each driving one receive channel before multiplexing and digitization. Use Value: 1.9nV/√Hz noise density and 60MHz GBW preserve time-of-flight resolution and contrast-to-noise ratio in B-mode imaging. |
Use Scenario: Conditioning outputs from MEMS accelerometers and bridge-based pressure sensors in industrial IoT nodes. IC Role / Device Role / Timing Role: Configured as precision instrumentation amplifier (using two amps per channel) with matched gain and offset tracking. Use Value: ≤450µV max input offset and 0.5µV/°C drift ensure stable DC-coupled measurement accuracy over temperature. |
| Active Filter Bank | A/D Converter Driver |
|
Use Scenario: Implementing cascaded 2nd-order Sallen-Key and MFB filters for anti-aliasing and tone detection in audio analyzers. IC Role / Device Role / Timing Role: Each amplifier in LT6235CGN#PBF realizes one pole-pair; quad configuration enables 4-pole filtering without external components. Use Value: Unity-gain stability and 17V/µs slew rate support clean 10MHz filter responses with <0.01% THD+N. |
Use Scenario: Driving the reference and input pins of 16-bit SAR ADCs (e.g., LTC2378-16) in data acquisition modules. IC Role / Device Role / Timing Role: One amplifier buffers reference voltage; another drives ADC input with fast settling and low charge kickback. Use Value: 170ns 0.1% settling ensures full 16-bit code accuracy at 1MSPS sample rates without pipeline delay penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP484ESZ-REEL | Higher supply current (2.5mA/amp), wider supply range (±4.5V to ±18V), higher noise (4.3nV/√Hz), no enable pin | Better suited for high-voltage industrial signal chains where noise is less critical than output drive strength | Select when needing ±15V operation or >±10V output swing - avoid if battery life or low-noise priority exists |
| ADA4897-4ARUZ | Lower noise (1.0nV/√Hz), higher GBW (220MHz), higher supply current (3.5mA/amp), no enable, SOIC-16 package | Optimized for high-speed, wideband applications like RF IF amplification or fast pulse shaping | Choose for bandwidth-critical designs >50MHz; avoid for low-power or enable-controlled systems |
Compared with OP484ESZ-REEL and ADA4897-4ARUZ, the LT6235CGN#PBF offers the best balance of ultra-low noise, low power, and integrated enable functionality in a compact SSOP - making it optimal for portable, multi-channel, precision analog front-ends where thermal and board space constraints apply.
Availability
LT6235CGN#PBF is available at Aetrix Electronics and suitable for ultrasound imaging systems, portable diagnostic devices, and industrial sensor signal conditioning requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LT6235CGN#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, serving industrial, automotive, communications, and healthcare markets.
The LT6235CGN#PBF belongs to ADI's legacy Linear Technology precision op amp portfolio, engineered specifically for low-noise, low-power, multi-channel signal conditioning in medical, test, and measurement equipment.
FAQ
What is the maximum supply voltage rating for the LT6235CGN#PBF?
The LT6235CGN#PBF has an absolute maximum total supply voltage (V+ to V–) of 12.6V. Operation beyond this rating risks permanent damage. For reliable long-term use, Analog Devices specifies a recommended operating range of 3V to 12.6V - confirmed across all electrical characteristics tables in the official datasheet for LT6235CGN#PBF.
Does the LT6235CGN#PBF include an enable pin for power control?
No, the LT6235CGN#PBF does not feature individual enable pins. Unlike the LT6233/LT6233-10 (single) or LT6234 (dual), the quad LT6235CGN#PBF lacks ENABLE functionality. Power control must be implemented externally via supply rail switching or series FETs - a key distinction confirmed in the Pin Configuration diagram and Electrical Characteristics tables for LT6235CGN#PBF.
What is the guaranteed input offset voltage specification for LT6235CGN#PBF over temperature?
The LT6235CGN#PBF is specified with a maximum input offset voltage of 450µV over the 0°C to 70°C range (C-grade), and 550µV over –40°C to 85°C (I-grade). This value is explicitly listed in the "Electrical Characteristics" table under "LT6234CS8, LT6235CGN" conditions - directly applicable to the LT6235CGN#PBF part number.
Can the LT6235CGN#PBF drive a 100Ω load while maintaining rail-to-rail output swing?
Yes, the LT6235CGN#PBF can drive 100Ω loads with rail-to-rail capability: output swing is specified to within 220mV of V+ and 195mV of V– at ISOURCE/ISINK = 10mA (3.3V supply), and within 435mV of V+ and 360mV of V– at 15mA (5V supply). Full rail-to-rail performance requires load currents ≤5mA - verified in the "Output Voltage Swing" section of the LT6235CGN#PBF datasheet.
Is the LT6235CGN#PBF pin-compatible with other members of the LT623x family?
No, the LT6235CGN#PBF is not pin-compatible with LT6233 or LT6234 variants. It uses a unique 16-pin SSOP (GN) footprint with dedicated pins for four independent amplifiers (OUT A/B/C/D, ±IN A/B/C/D, V+, V–), whereas LT6233 is 6-pin SOT-23 and LT6234 is 8-pin SO/DFN. Pin mapping, count, and spacing differ fundamentally - confirmed by comparing S6, S8, DD, and GN package drawings in the LT6235CGN#PBF datasheet.
LT6235CGN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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 (x4 Channels)
- Current - Output / Channel:
- 55 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
LT6235CGN#PBF FAQ
1.How can I place an order for LT6235CGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6235CGN#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 LT6235CGN#PBF reliable?
The price and inventory of LT6235CGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6235CGN#PBF is usually 5 days.
3.What payment methods are accepted for LT6235CGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6235CGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6235CGN#PBF?
LT6235CGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6235CGN#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 LT6235CGN#PBF?
For technical support, including LT6235CGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6235CGN#PBF requirements.
6.How does Aetrix verify that LT6235CGN#PBF is sourced from the original manufacturer or authorized distributors?
All LT6235CGN#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 LT6235CGN#PBF meets industry standards.
7.What is the process for return or replacement of LT6235CGN#PBF?
All LT6235CGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6235CGN#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 LT6235CGN#PBF part is unused and in its original packaging.
Return procedure for LT6235CGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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