My Inquiry
My Account
Analog Devices Inc. LTC6269HDD-10#PBF
- Part No.:
- LTC6269HDD-10#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LTC6269HDD-10#PBF.pdf
- Description:
- IC OPAMP JFET 2 CIRCUIT 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:213
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC6269HDD-10#PBF from Analog Devices (formerly Linear Technology) is a dual-channel, decompensated, 4GHz gain-of-10-stable FET-input operational amplifier optimized for ultra-low input bias current (±3fA typ. at 25°C), ultra-low input capacitance (0.45pF common-mode), and high-speed transimpedance amplifier (TIA) applications in photodetection and precision sensor front-ends. It operates from 3.1V to 5.25V, delivers rail-to-rail output swing, and features shutdown control.
For engineers reviewing the LTC6269HDD-10#PBF datasheet, LTC6269HDD-10#PBF pinout, LTC6269HDD-10#PBF application, or LTC6269HDD-10#PBF equivalent, key selection criteria include femtoamp-level input bias current stability over –40°C to 125°C, 0.45pF input capacitance limiting TIA noise bandwidth, 4GHz gain-bandwidth product enabling >200MHz closed-loop TIAs, and 10-lead DFN package thermal performance (θJA = 43°C/W).
Technical Context
The LTC6269HDD-10#PBF employs a CMOS input buffer stage with bootstrapped protection diodes to achieve sub-femtoamp bias current while maintaining low input capacitance. Its complementary input stage dynamically switches between two differential amplifiers across the input common-mode range (–0.1V to 4.5V), ensuring consistent DC accuracy and AC performance.
This architecture supports stable operation at AV ≥ 10 without external compensation, delivering +1500V/µs slew rate and 73MHz full-power bandwidth at 4VP–P, making it suitable for high-gain, high-bandwidth TIAs where input node capacitance must be minimized to preserve signal integrity and noise floor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 4GHz - Enables stable 200+ MHz transimpedance amplifiers with 20kΩ feedback resistors and minimal phase margin degradation. |
| Input Bias Current | ±3fA typical at 25°C - Ensures negligible error in femtoamp-level photocurrent measurements; <4pA max at 125°C for high-temp reliability. |
| Input Capacitance | 0.45pF common-mode - Directly limits TIA noise gain roll-off and closed-loop bandwidth; critical for >100MHz photodiode interfaces. |
| Slew Rate | +1500V/µs, –1000V/µs - Supports fast transient response in pulsed optical detection without slew-induced distortion. |
| Supply Range | 3.1V to 5.25V - Compatible with standard 3.3V and 5V systems; split-supply operation permitted within total voltage constraint. |
| Operating Temp | –40°C to 125°C - Qualified for automotive under-hood, industrial sensing, and aerospace environments requiring extended temperature operation. |
| Rail-to-Rail Output | Yes - Maximizes dynamic range in single-supply configurations; VOL ≤ 200mV and VOH ≤ 370mV at 25mA load. |
Pinout & Package
The LTC6269HDD-10#PBF is housed in a 10-lead (3mm × 3mm) plastic DFN package with exposed V– pad (Pin 11) recommended for PCB soldering to optimize thermal performance (θJA = 43°C/W). The package supports dual-amplifier functionality with independent inputs and outputs per channel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | +INA, –INA, OUTA, V– | Channel A non-inverting input, inverting input, output, and negative supply return - V– connects to exposed pad for thermal and electrical grounding. |
| 5, 6, 7, 8 | V+, OUTB, –INB, +INB | Positive supply, Channel B output, inverting input, and non-inverting input - V+ requires local 0.1µF bypass to ground. |
| 9, 10, 11 | SDA, SDB, V– (exposed) | Active-low shutdown for Channel A (SDA) and Channel B (SDB); exposed V– pad must be soldered to PCB for thermal management and low-impedance return path. |
Key Features
| Feature | Design Value |
|---|---|
| Femtoamp Input Bias Current | ±3fA typ. at 25°C enables accurate measurement of ultra-low photocurrents from APDs and PMTs without guard-ring board layout overhead. |
| Ultra-Low Input Capacitance | 0.45pF common-mode minimizes noise gain peaking in TIAs and preserves closed-loop bandwidth when interfacing with high-capacitance photodiodes. |
| Gain-of-10 Stability | Decompensated design eliminates need for external compensation capacitors in AV ≥ 10 configurations, simplifying high-speed TIA layout. |
| Independent Dual Shutdown | Separate SDA and SDB pins allow selective power-down of each amplifier channel, reducing quiescent current from 33mA to <2.4mA total in shutdown mode. |
| Rail-to-Rail Output Swing | Delivers >95% of supply rail-to-rail swing at 10mA load, maximizing signal headroom in single-supply 3.3V or 5V systems. |
Applications
| Photodiode-Based Optical Sensing | High-Speed ADC Driver |
|---|---|
Use Scenario: Amplifying weak photocurrents from silicon photodiodes in laser rangefinders or fiber-optic receivers operating up to 200MHz. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with 20kΩ–402kΩ feedback resistor, leveraging 0.45pF CIN and 4GHz GBW to achieve 210MHz bandwidth. Use Value: Enables sub-nanosecond rise-time pulse detection with <1% distortion at 10MHz, directly supporting time-of-flight (ToF) resolution below 1ns. | Use Scenario: Driving 12-bit, 100MSPS SAR ADCs in medical imaging front-ends requiring low THD and wide bandwidth. IC Role / Device Role / Timing Role: High-fidelity buffer and level-shifter with rail-to-rail output and 4.0nV/√Hz voltage noise at 1MHz. Use Value: Maintains ENOB > 11.2 bits by contributing <0.5 LSB noise and preserving settling time <50ns to 0.01% for 2VP–P signals. |
| Photomultiplier Tube (PMT) Post-Amplifier | Low-IB Precision Instrumentation |
Use Scenario: Amplifying fast, low-current pulses from PMTs in radiation detection and mass spectrometry systems. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate post-amplifier with ±3fA IB and +1500V/µs slew rate to preserve pulse fidelity. Use Value: Reduces baseline drift and pulse amplitude error in femtoamp-range signals, improving energy resolution by >15% versus conventional op amps. | Use Scenario: Front-end amplifier in picoammeter and electrometer designs measuring leakage currents in semiconductor test fixtures. IC Role / Device Role / Timing Role: Ultra-high-impedance voltage follower or difference amplifier with >1000GΩ input resistance and guarded input pins. Use Value: Achieves <10fA measurement floor over 24-hour periods at 125°C, meeting IEC 61000-4-2 ESD immunity validation requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-bias-current, high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4817-2ARMZ | Lower GBW (1GHz), higher IB (2pA), no shutdown, 8-lead MSOP package | Limited to <100MHz TIAs; unsuitable for fA-level photodiode readout at elevated temperatures | Select only if cost sensitivity outweighs bandwidth and bias current requirements; verify thermal derating at 125°C. |
| OPA858IDSGR | Higher IB (200fA), lower CIN (0.15pF), fixed-gain configuration, 8-lead WSON | Optimized for fixed-gain TIAs; lacks dual-channel flexibility and independent shutdown per channel | Prefer for single-channel, space-constrained designs where 0.15pF CIN justifies trade-off in bias current and channel count. |
Compared with ADA4817-2ARMZ and OPA858IDSGR, the LTC6269HDD-10#PBF uniquely combines dual-channel operation, femtoamp bias current stability over –40°C to 125°C, and gain-of-10 stability in a thermally enhanced 10-lead DFN-enabling compact, high-reliability TIAs for demanding optical sensing platforms.
Availability
LTC6269HDD-10#PBF is available at Aetrix Electronics and suitable for photodiode-based optical sensing, high-speed ADC driver, and photomultiplier tube post-amplifier applications requiring stable component supply across automotive, industrial, and test equipment production cycles.
Supply support for LTC6269HDD-10#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 precision instrumentation, communications, and industrial markets.
The LTC6269 series belongs to ADI's ultra-low-input-bias-current, high-speed op amp product line, designed specifically for transimpedance amplification in photonics, scientific instrumentation, and precision metrology where femtoamp leakage and picofarad-level parasitics dominate system performance.
FAQ
What is the maximum operating temperature specification for the LTC6269HDD-10#PBF?
The LTC6269HDD-10#PBF is fully specified over the –40°C to +125°C operating temperature range, with guaranteed performance including input bias current (<4pA max), gain-bandwidth (≥3.5GHz), and output drive capability across this full range. This H-grade qualification makes it suitable for under-hood automotive and industrial environments where ambient temperatures exceed 105°C.
Does the LTC6269HDD-10#PBF require external compensation for gain-of-10 operation?
No, the LTC6269HDD-10#PBF is internally decompensated for gain-of-10 stability and does not require external compensation capacitors in AV ≥ 10 configurations. Its design ensures phase margin >45° and monotonic step response at AV = 10, simplifying high-speed TIA layout and eliminating tuning iterations associated with compensation networks.
How is the exposed pad (Pin 11) of the LTC6269HDD-10#PBF electrically connected?
The exposed pad (Pin 11) of the LTC6269HDD-10#PBF is internally connected to V– and must be soldered to a PCB copper pour tied to the system's negative supply or ground plane. This connection is mandatory for achieving the specified θJA = 43°C/W thermal resistance and ensuring stable operation under full-load conditions.
Can both amplifiers in the LTC6269HDD-10#PBF be independently shut down?
Yes, the LTC6269HDD-10#PBF provides separate active-low shutdown pins: SDA (Pin 9) controls Channel A and SDB (Pin 10) controls Channel B. Driving either pin below 0.75V disables its respective amplifier, reducing per-channel quiescent current from 16.5mA to <1.5mA, enabling flexible power management in dual-path optical receivers.
What is the input common-mode voltage range for the LTC6269HDD-10#PBF?
The LTC6269HDD-10#PBF supports an input common-mode voltage range from V– to (V+ – 0.5V), which translates to –0.1V to 4.5V when operated on a 5V supply (V+ = 5V, V– = 0V). This rail-to-rail input capability allows direct interfacing with sensors and DACs spanning the full supply range without level-shifting circuitry.
LTC6269HDD-10#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 1500V/µs
- Gain Bandwidth Product:
- 4 GHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.003 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 16.5mA (x2 Channels)
- Current - Output / Channel:
- 90 mA
- Voltage - Supply Span (Min):
- 3.1 V
- Voltage - Supply Span (Max):
- 5.25 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
LTC6269HDD-10#PBF FAQ
1.How can I place an order for LTC6269HDD-10#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6269HDD-10#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 LTC6269HDD-10#PBF reliable?
The price and inventory of LTC6269HDD-10#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6269HDD-10#PBF is usually 5 days.
3.What payment methods are accepted for LTC6269HDD-10#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6269HDD-10#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6269HDD-10#PBF?
LTC6269HDD-10#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6269HDD-10#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 LTC6269HDD-10#PBF?
For technical support, including LTC6269HDD-10#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6269HDD-10#PBF requirements.
6.How does Aetrix verify that LTC6269HDD-10#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6269HDD-10#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 LTC6269HDD-10#PBF meets industry standards.
7.What is the process for return or replacement of LTC6269HDD-10#PBF?
All LTC6269HDD-10#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6269HDD-10#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 LTC6269HDD-10#PBF part is unused and in its original packaging.
Return procedure for LTC6269HDD-10#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC6269HDD-10#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…
