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Analog Devices Inc. LTC6228HS8#PBF
- Part No.:
- LTC6228HS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC6228HS8#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:600
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Product details
Overview
LTC6228HS8#PBF from Analog Devices is a single-channel, rail-to-rail output, unity-gain stable operational amplifier optimized for high-speed, low-noise signal conditioning. It delivers 730MHz –3dB bandwidth (AV = +1), 890MHz gain-bandwidth product, 500V/µs slew rate, and ultra-low 0.88nV/√Hz input voltage noise - enabling precision driving of high-resolution SAR ADCs like the LTC2387-18 in demanding data acquisition systems.
For engineers reviewing the LTC6228HS8#PBF datasheet, LTC6228HS8#PBF pinout, LTC6228HS8#PBF application, or LTC6228HS8#PBF equivalent, this op amp is selected for wide-dynamic-range analog front-ends where simultaneous low distortion (<–100dBc at 2MHz, 4VP-P), rail-to-rail output swing, shutdown control, and operation from 2.8V to 11.75V supplies are critical design requirements.
Technical Context
The LTC6228HS8#PBF employs a proprietary high-speed bipolar complementary architecture to achieve exceptional small-signal bandwidth and large-signal slew performance while maintaining low input voltage noise and high open-loop gain (135dB). Its internal bias current cancellation circuitry is configurable via the SHDN pin to optimize noise versus input current trade-offs.
It operates across –40°C to +125°C with guaranteed specifications at ±5V, +5V/0V, and +3V/0V supplies. The device supports rail-to-rail input (extends to V–) and output (swings within 20mV of rails at 25mA load), making it suitable for single-supply and low-voltage high-fidelity applications without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 890MHz - enables stable unity-gain and higher-gain configurations up to ~100MHz with phase margin >45° |
| –3dB Bandwidth (AV = +1) | 730MHz - supports full-power signal fidelity for fast pulse and video applications |
| Slew Rate | 500V/µs - ensures minimal slewing distortion on 8VP-P signals up to 12.5MHz full-power bandwidth |
| Input Voltage Noise | 0.88nV/√Hz at 1MHz - preserves SNR in low-amplitude, wideband sensor and transimpedance amplifier stages |
| Supply Range | 2.8V to 11.75V - compatible with 3V, 5V, and ±5V systems; supports industrial and automotive extended-temp designs |
| Shutdown Current | 500µA max - reduces system power during idle cycles without external switching circuitry |
| Operating Temperature | –40°C to +125°C - qualified for harsh-environment industrial and automotive under-hood signal chains |
Pinout & Package
Package: 8-Lead Plastic SOIC (S8), RoHS-compliant, exposed pad not present. Thermal resistance θJA = 120°C/W. Pin 1 = SHDN, Pin 2 = V+, Pin 3 = OUT, Pin 4 = V–, Pin 5 = FB, Pin 6 = –IN, Pin 7 = +IN, Pin 8 = V– (dual V– connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SHDN) | Shutdown Control Input | Active-high logic input; drives amplifier into low-current state when ≥ V+ – 1.6V; also configures bias cancellation |
| 2 (V+) | Positive Supply Rail | Accepts 2.8V to 11.75V; powers internal core and output stage; decoupling required near pin |
| 3 (OUT) | Amplifier Output | Rail-to-rail capable; sources/sinks ≥80mA; requires series resistor for stability with capacitive loads >100pF |
| 4 & 8 (V–) | Negative Supply Rail | Connects to ground (single supply) or negative rail; dual pins reduce IR drop and improve PSRR |
| 5 (FB) | Feedback Terminal | Used in current-feedback configurations; not connected in standard voltage-feedback use |
| 6 (–IN) | Inverting Input | Differential input node; 3.5pF differential capacitance affects high-frequency stability and filter design |
| 7 (+IN) | Non-Inverting Input | High-impedance input (4MΩ common-mode); extends to V– rail; enables true single-supply sensor interfacing |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Voltage Noise | 0.88nV/√Hz enables <93.4dB SNR in 15Msps, 18-bit SAR ADC driver applications (e.g., LTC2387-18) |
| Configurable Bias Cancellation | SHDN pin double-function allows dynamic trade-off between input bias current (≤0.6µA) and voltage noise (0.88nV/√Hz) |
| Rail-to-Rail Output Swing | Swings within 20mV of V– and 60mV of V+ at 25mA load - maximizes dynamic range in low-voltage systems |
| High Open-Loop Gain | 135dB (5.6V/µV) at RL = 1kΩ ensures <250µV offset error contribution in closed-loop precision gain stages |
| Fast Turn-On/Off | 900ns turn-on / 500ns turn-off enables microsecond-scale power cycling in time-multiplexed channel architectures |
| Wide Supply Range | 2.8V to 11.75V operation supports battery-powered, industrial 3.3V/5V, and dual ±5V instrumentation systems |
Applications
| ADC Driver for High-Speed SAR Converters | Transimpedance Amplifier in Optical Receivers |
|---|---|
|
Use Scenario: Driving the LTC2387-18 18-bit, 15Msps SAR ADC with a 7.3VP-P, 1MHz input signal in a medical imaging front-end. IC Role / Device Role / Timing Role: Precision buffer and level-shifter delivering low-noise, low-distortion signal with <95dB SFDR and 93.4dB SNR. Use Value: Enables full utilization of 18-bit resolution without aperture jitter or thermal noise degradation from the op amp stage. |
Use Scenario: Converting photodiode current to voltage in fiber-optic line receivers operating up to 100MHz. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth TIA with 730MHz closed-loop bandwidth and 0.88nV/√Hz input-referred noise. Use Value: Achieves >100dB dynamic range and sub-picosecond timing resolution in high-speed optical data links. |
| High-Fidelity Video Signal Amplification | Low-Voltage Hi-Fi Audio Line Driver |
|
Use Scenario: Buffering and driving 75Ω coaxial video lines in broadcast-grade HD/3G-SDI equipment with NTSC compliance. IC Role / Device Role / Timing Role: Unity-gain stable video amplifier with 0.008% differential gain and 0.004° differential phase error. Use Value: Preserves color fidelity and edge integrity without external peaking networks or post-compensation. |
Use Scenario: Driving 32Ω headphones or line-level outputs in portable audio DACs powered from 3.3V single supply. IC Role / Device Role / Timing Role: Rail-to-rail output op amp delivering 2Vrms into 32Ω with THD < –93.8dB at 1kHz. Use Value: Eliminates DC-blocking capacitors and supports true single-supply, low-voltage headphone amplification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4898-1ARZ | Lower noise (0.9nV/√Hz), lower GBW (650MHz), no shutdown, SOIC-8 package | Lacks shutdown and bias cancellation; better for fixed-gain, always-on precision instrumentation | Select when lowest possible distortion at 100kHz–1MHz is prioritized over power gating and configurability |
| LMH6629MA/NOPB | Higher noise (1.4nV/√Hz), higher slew (1800V/µs), wider supply (5–12V), no shutdown, SOIC-8 | Optimized for extreme slew-limited applications (e.g., pulsed laser drivers); less suitable for ADC driving due to higher noise | Select only when >1000V/µs slew is mandatory and 0.88nV/√Hz noise is secondary to transient response |
Compared with ADA4898-1ARZ and LMH6629MA/NOPB, the LTC6228HS8#PBF uniquely combines ultra-low noise, 730MHz bandwidth, shutdown capability, and bias cancellation in a single SOIC-8 package - making it the only option among the three that simultaneously satisfies high-SNR ADC driving, power-aware system architecture, and flexible noise/current optimization.
Availability
LTC6228HS8#PBF is available at Aetrix Electronics and suitable for high-speed data acquisition, optical receiver front-ends, and precision video signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for LTC6228HS8#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, serving industrial, communications, automotive, and healthcare markets.
The LTC6228 family was designed specifically for ultra-low-noise, high-bandwidth signal conditioning in precision data conversion and high-fidelity analog systems - emphasizing dynamic range preservation over raw speed alone.
FAQ
What is the maximum operating supply voltage for the LTC6228HS8#PBF?
The LTC6228HS8#PBF has an absolute maximum total supply voltage (V+ to V–) of 12V. Its specified operating range is 2.8V to 11.75V, with full performance guaranteed at ±5V, +5V/0V, and +3V/0V supplies. Exceeding 12V risks permanent damage per Absolute Maximum Ratings.
Does the LTC6228HS8#PBF support rail-to-rail input and output operation?
Yes, the LTC6228HS8#PBF supports rail-to-rail input (common-mode range extends to V– – 0.1V) and rail-to-rail output (swings within 20mV of V– and 60mV of V+ at 25mA load). This enables true single-supply operation down to 2.8V without external level-shifting circuitry.
How does the SHDN pin function beyond enabling/disabling the amplifier?
The SHDN pin on the LTC6228HS8#PBF serves a dual role: it enables/disables the amplifier core (at V+ – 2.65V low / V+ – 1.6V high), and also controls internal bias current cancellation - configured by setting the pin to V+ – 1V (disable) or V+ – 0.35V (enable) to trade input current for voltage noise performance.
What is the typical harmonic distortion performance of the LTC6228HS8#PBF at 1MHz?
At 1MHz, 4VP-P output, RL = 1kΩ, and AV = +1, the LTC6228HS8#PBF achieves HD2/HD3 of –107dBc/–114dBc. At 2VP-P under identical conditions, distortion improves to –119dBc/–132dBc - confirming its suitability for high-fidelity, wide-dynamic-range signal paths.
Is the LTC6228HS8#PBF pin-compatible with other op amps in the LTC6228/LTC6229 family?
Yes, the LTC6228HS8#PBF shares identical pinout with all S8-package variants (e.g., LTC6228IS8#PBF), differing only in temperature grade (–40°C to +125°C vs. –40°C to +85°C). It is not pin-compatible with DFN or TSOT-23 variants due to different package footprints and terminal assignments.
LTC6228HS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 500V/µs
- Gain Bandwidth Product:
- 890 MHz
- -3db Bandwidth:
- 730 MHz
- Current - Input Bias:
- 16 µA
- Voltage - Input Offset:
- 20 µV
- Current - Supply:
- 16mA
- Current - Output / Channel:
- 140 mA
- Voltage - Supply Span (Min):
- 2.8 V
- Voltage - Supply Span (Max):
- 11.75 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LTC6228HS8#PBF FAQ
1.How can I place an order for LTC6228HS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6228HS8#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 LTC6228HS8#PBF reliable?
The price and inventory of LTC6228HS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6228HS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC6228HS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6228HS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6228HS8#PBF?
LTC6228HS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6228HS8#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 LTC6228HS8#PBF?
For technical support, including LTC6228HS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6228HS8#PBF requirements.
6.How does Aetrix verify that LTC6228HS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6228HS8#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 LTC6228HS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC6228HS8#PBF?
All LTC6228HS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6228HS8#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 LTC6228HS8#PBF part is unused and in its original packaging.
Return procedure for LTC6228HS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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