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Analog Devices Inc. LT1816IDD#PBF
- Part No.:
- LT1816IDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT1816IDD#PBF.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:248
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Product details
Overview
LT1816IDD#PBF from Analog Devices (formerly Linear Technology) is a dual-channel, high-speed, programmable-current operational amplifier in an 8-lead 3mm × 3mm DFN package. It delivers 220MHz gain-bandwidth, 1500V/µs slew rate, and ±50mA output drive per channel at ±5V supplies - enabling precision video buffering, active filter design, and high-fidelity data acquisition signal conditioning.
For engineers reviewing the LT1816IDD#PBF datasheet, LT1816IDD#PBF pinout, LT1816IDD#PBF application, or LT1816IDD#PBF equivalent, key selection criteria include its programmable supply current (1–11.5mA per amplifier), –40°C to 125°C extended temperature rating, low 6nV/√Hz input noise, and guaranteed unity-gain stability with 100Ω load drive capability.
Technical Context
The LT1816IDD#PBF employs a voltage-feedback topology with current-feedback slewing characteristics, enabling fast transient response without sacrificing DC accuracy. Its ISET pin allows dynamic adjustment of quiescent current and bandwidth via an external resistor (0–40kΩ), shifting GBW from 50MHz (low-power mode) to 220MHz (full-speed mode).
It features complementary NPN/PNP input stages for bias current cancellation, supports rail-to-rail output swing (±3.5V into 100Ω on ±5V), and maintains 73dB CMRR and 76dB PSRR over –40°C to 125°C - making it suitable for mixed-signal systems requiring both speed and precision under wide thermal and supply-voltage variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 220MHz typical - enables stable closed-loop operation up to 100MHz in AV = 2 configuration with 100Ω load. |
| Slew Rate | 1500V/µs typical - supports clean 5MHz, 2VP-P output into 100Ω with –70dB THD. |
| Supply Current (per amp) | 6.5mA typical at full speed; programmable down to 0.9mA - reduces power by >85% in low-power mode. |
| Input Noise Voltage | 6nV/√Hz at 10kHz - preserves SNR in low-level signal amplification (e.g., sensor front-ends). |
| Output Drive | ±50mA minimum into ±3V - drives 100Ω loads to ±3.5V swing, supporting cable driver and video line-driving requirements. |
| Input Offset Voltage | 2.0mV max over –40°C to 125°C - ensures <100µV error in 50mV full-scale instrumentation applications. |
| Operating Temperature | –40°C to +125°C - qualified for automotive under-hood and industrial motor-control environments. |
Pinout & Package
LT1816IDD#PBF uses an 8-lead (3mm × 3mm) plastic DFN package with underside metal thermally and electrically connected to V–. The package is lead-free, RoHS-compliant, and optimized for low-inductance layout with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT A | Amplifier A output | Capable of ±50mA sink/source; connects directly to load or feedback network. |
| 2: –IN A | Inverting input A | High-impedance node; requires matched source resistance for bias current cancellation. |
| 3: +IN A | Non-inverting input A | DC-coupled input; common-mode range extends to ±3.5V on ±5V supplies. |
| 4: V– | Negative supply rail | Internally connected to underside metal pad; must be low-impedance for thermal and noise performance. |
| 5: V+ | Positive supply rail | Accepts ±1.25V to ±5.5V or single 2.5V to 5V; bypass with 0.01µF ceramic capacitor. |
| 6: OUT B | Amplifier B output | Independent output; channel separation ≥80dB prevents crosstalk in dual-path designs. |
| 7: –IN B | Inverting input B | Electrically isolated from Channel A; supports independent gain/feedback configurations. |
| 8: +IN B | Non-inverting input B | Same input structure as Channel A; enables true differential or parallel processing topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable supply current | Adjustable from 0.9mA to 11.5mA per amplifier via ISET pin resistor - enables dynamic power/speed trade-off in battery-powered or thermally constrained systems. |
| Unity-gain stable | Operates unconditionally stable with gain ≥1 and 100Ω load - eliminates need for external compensation in most buffer and follower applications. |
| Low input offset drift | 10µV/°C max - maintains calibration integrity across automotive and industrial temperature ranges without recalibration. |
| High output current density | ±50mA into ±3V on ±5V supplies - drives coaxial cables, ADC drivers, and active filters without external boost stages. |
| Robust input stage | Withstands ±6V differential input transients - eliminates need for external clamping diodes in noisy industrial interfaces. |
Applications
| Video Line Driver | High-Speed Data Acquisition |
|---|---|
Use Scenario: Driving 75Ω coaxial video lines in broadcast equipment or medical imaging displays. IC Role / Device Role / Timing Role: Dual-channel buffer with low distortion (–70dB THD at 5MHz) and fast settling (15ns to 0.1%) for composite and component video signals. Use Value: Maintains differential gain/phase <0.08%/0.04° across 5MHz bandwidth, preserving color fidelity without post-processing correction. | Use Scenario: Front-end signal conditioning for 10-bit+ SAR ADCs sampling at ≥10MSPS. IC Role / Device Role / Timing Role: High-Z input buffer and anti-aliasing filter driver with 220MHz GBW and 1500V/µs slew rate. Use Value: Settles 2V step within 15ns to 0.1%, enabling full-resolution sampling without aperture uncertainty penalty. |
| Active Filter Design | Industrial Sensor Interface |
Use Scenario: 4th-order low-pass filter in vibration monitoring or audio spectrum analyzers. IC Role / Device Role / Timing Role: Dual op-amp implementing MFB or biquad topology with precise pole placement. Use Value: 6nV/√Hz input noise and 0.2Ω output impedance minimize passband ripple and thermal noise contribution. | Use Scenario: Amplifying low-level bridge sensor outputs (e.g., strain gauges, pressure transducers) in PLC analog input modules. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain and low-drift offset. Use Value: 2.0mV max VOS and 10µV/°C drift ensure <0.1% FS error over –40°C to 125°C without trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4898-2ARMZ | Lower noise (3.9nV/√Hz), higher supply current (18mA), no programmable current feature. | Better for ultra-low-noise precision applications; unsuitable where dynamic power scaling is required. | Select when noise dominates budget and thermal headroom permits fixed high current. |
| LMH6629MA/NOPB | Higher slew rate (3000V/µs), wider GBW (1.5GHz), but only specified to 85°C and lacks ISET pin. | Preferred for RF IF amplification above 100MHz; not rated for automotive or extended industrial temperature use. | Choose for GHz-range small-signal gain; avoid where –40°C to 125°C operation or power adaptability is mandatory. |
Compared with ADA4898-2ARMZ and LMH6629MA/NOPB, the LT1816IDD#PBF uniquely balances programmable power, extended temperature rating, and proven 220MHz performance - making it optimal for thermally constrained, multi-range industrial systems requiring both speed and configurability.
Availability
LT1816IDD#PBF is available at Aetrix Electronics and suitable for video line driving, high-speed data acquisition, and active filter design requiring stable component supply across automotive, industrial automation, and test equipment programs.
Supply support for LT1816IDD#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 semiconductors, formed through the acquisition of Linear Technology in 2017.
The LT1816IDD#PBF belongs to ADI's legacy Linear Technology high-speed op-amp product line, engineered specifically for applications demanding simultaneous high bandwidth, low distortion, and robust DC precision in compact packages.
FAQ
What is the maximum operating junction temperature for LT1816IDD#PBF?
The LT1816IDD#PBF has a maximum junction temperature (TJMAX) of 125°C, as specified for the DD package variant. This is lower than the 150°C rating of SO and MSOP versions due to thermal limitations of the 3mm × 3mm DFN construction. Proper PCB copper pour under the exposed V– pad is essential to maintain safe operation at full output current and ambient temperatures up to 85°C.
How does the ISET pin function in LT1816IDD#PBF?
The ISET pin on the LT1816IDD#PBF controls supply current and bandwidth via an external resistor to V–. With RSET = 0Ω (direct short), the device operates at full speed (220MHz GBW, 6.5mA typical current). At RSET = 40kΩ, it enters low-power mode (50MHz GBW, 0.9mA typical current). The LT1816IDD#PBF datasheet specifies exact IS vs. RSET curves and guarantees performance across this full range.
Is LT1816IDD#PBF unity-gain stable with capacitive loads?
Yes, the LT1816IDD#PBF is unity-gain stable with resistive loads up to 100Ω, but capacitive loading requires careful design. It can drive ≤10pF directly in unity-gain configuration. For larger capacitive loads (e.g., ADC inputs or long traces), a 10Ω–50Ω isolation resistor must be placed between the LT1816IDD#PBF output and the capacitance to prevent peaking or oscillation while maintaining feedback from the load side.
What is the input common-mode voltage range for LT1816IDD#PBF on ±5V supplies?
On ±5V supplies, the LT1816IDD#PBF guarantees an input common-mode voltage range of ±3.5V (i.e., –3.5V to +3.5V) over the full –40°C to 125°C temperature range. This is validated by CMRR specification and ensures linear operation even when inputs approach rails - critical for single-supply interfacing with level-shifted sensors or DAC outputs.
Does LT1816IDD#PBF support single-supply operation?
Yes, the LT1816IDD#PBF supports single-supply operation from 2.5V to 5V. On a 5V supply with VCM = 2.5V, it delivers rail-to-rail output swing from 1.0V to 4.0V into 100Ω, and maintains 200MHz GBW and 750V/µs slew rate. Input common-mode range spans 0.9V to 4.1V, enabling direct interface with 3.3V logic and mid-supply referenced signal chains.
LT1816IDD#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:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 1500V/µs
- Gain Bandwidth Product:
- 220 MHz
- -3db Bandwidth:
- 350 MHz
- Current - Input Bias:
- 2 µA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 6.5mA (x2 Channels)
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LT1816IDD#PBF FAQ
1.How can I place an order for LT1816IDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1816IDD#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 LT1816IDD#PBF reliable?
The price and inventory of LT1816IDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1816IDD#PBF is usually 5 days.
3.What payment methods are accepted for LT1816IDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1816IDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1816IDD#PBF?
LT1816IDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1816IDD#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 LT1816IDD#PBF?
For technical support, including LT1816IDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1816IDD#PBF requirements.
6.How does Aetrix verify that LT1816IDD#PBF is sourced from the original manufacturer or authorized distributors?
All LT1816IDD#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 LT1816IDD#PBF meets industry standards.
7.What is the process for return or replacement of LT1816IDD#PBF?
All LT1816IDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1816IDD#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 LT1816IDD#PBF part is unused and in its original packaging.
Return procedure for LT1816IDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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