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Analog Devices Inc. LTC6229IDD#PBF
- Part No.:
- LTC6229IDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LTC6229IDD#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,558
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Product details
Overview
LTC6229IDD#PBF from Analog Devices is a dual, 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 15Msps data acquisition systems.
For engineers reviewing the LTC6229IDD#PBF datasheet, LTC6229IDD#PBF pinout, LTC6229IDD#PBF application, or LTC6229IDD#PBF equivalent, key selection criteria include shutdown current (500µA), input offset drift (0.4µV/°C), rail-to-rail output swing (±20mV from rails at 25mA), and guaranteed operation from –40°C to 85°C in the 10-lead 3mm × 3mm DFN package.
Technical Context
The LTC6229IDD#PBF implements a proprietary high-speed bipolar-CMOS-DMOS (BCD) process architecture that enables simultaneous low noise, high slew rate, and rail-to-rail output swing without sacrificing stability. Its internal bias current cancellation circuitry is software-controllable via the SHDN pin, allowing dynamic optimization between input current noise (3pA/√Hz enabled vs. 6.3pA/√Hz disabled) and total harmonic distortion performance.
Designed for single- or dual-supply operation from 2.8V to 11.75V, the device maintains full functionality across supply voltages including ±5V, +5V/0V, and +3V/0V configurations. Its input common-mode range extends to the negative rail, and its open-loop gain exceeds 135dB (5.6V/µV) into 1kΩ loads - supporting high-precision closed-loop gain accuracy in active filter and differential-to-single-ended conversion topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| –3dB Bandwidth | 730MHz at AV = +1, RL = 1kΩ - supports >100MHz small-signal video and RF IF amplification without peaking. |
| Slew Rate | 500V/µs - enables clean 4VP-P output steps at 2MHz with HD2/HD3 < –100dBc, critical for ADC driver linearity. |
| Input Voltage Noise | 0.88nV/√Hz at 1MHz - sets fundamental SNR floor for wideband transimpedance and sensor front-end designs. |
| Supply Current | 16mA per channel - balances speed and power in portable instrumentation and battery-backed signal chains. |
| Shutdown Current | 500µA per channel - allows rapid power gating in multi-channel systems without external FETs. |
| Input Offset Drift | 0.4µV/°C - ensures <1µV total drift over 0–70°C ambient, eliminating recalibration in precision measurement gear. |
| Output Drive | ±80mA min - drives 100Ω loads directly, simplifying termination in high-speed transmission line interfaces. |
Pinout & Package
The LTC6229IDD#PBF is housed in a 10-lead 3mm × 3mm plastic DFN package (DD10) with exposed pad (Pin 11) connected to V–. The package supports thermal resistance θJA = 43°C/W with proper PCB copper pour and is RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | +INA, –INA, OUTA, V– | Channel A non-inverting/inverting inputs, output, and negative supply - standard op-amp configuration with V– as reference for both channels. |
| 5, 6, 7, 8 | +INB, –INB, OUTB, SHDNB | Channel B inputs/output and dedicated shutdown control - independent enable/disable per channel improves system-level power sequencing. |
| 9, 10 | V+, SHDNA | Positive supply and shared shutdown control for Channel A - allows synchronized or asymmetric shutdown depending on layout routing. |
| Exposed Pad | V– | Thermal and electrical connection to negative supply - must be soldered to PCB ground plane for thermal integrity and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Within 20mV of either rail at 25mA load - eliminates level-shifting circuits when interfacing with 3.3V or 5V ADCs. |
| SHDN-controlled bias cancellation | Configurable via SHDN pin voltage thresholds (VH_IBIAS/VL_IBIAS) - reduces input current noise by 2× while maintaining <1µA offset current match. |
| High CMRR & PSRR | ≥94dB CMRR and ≥95dB PSRR over 100kHz–10MHz - rejects switching noise from DC/DC converters in mixed-signal PCBs. |
| Unity-gain stable | No external compensation required - simplifies layout for AV = +1 buffer, active filter, and cable driver applications. |
| Wide supply range | 2.8V to 11.75V operation - supports single 3.3V, 5V, or dual ±5V supplies without redesign. |
Applications
| Driving High Dynamic Range A/D Converters | Active Filters |
|---|---|
Use Scenario: Driving the LTC2387-18 18-bit SAR ADC at 15Msps sampling rate with 7.3VP-P 1MHz input signal. IC Role / Device Role / Timing Role: Precision buffer and gain stage ensuring minimal THD (–93.8dB) and SFDR (95dB) before digitization. Use Value: Enables 93.4dB SNR in 8192-point FFT - exceeding 16-bit ENOB without external calibration. | Use Scenario: 5th-order Butterworth low-pass filter for anti-aliasing prior to high-speed data acquisition. IC Role / Device Role / Timing Role: High-Q, low-phase-error active filter stage with gain stability across temperature. Use Value: Maintains <0.01° phase deviation up to 10MHz due to 890MHz GBW and low input capacitance (3.5pF). |
| High Speed Differential to Single-Ended Conversion | Low Voltage Hi-Fi Amplification |
Use Scenario: Converting LVDS or CML differential clock/data signals to single-ended for FPGA clock distribution. IC Role / Device Role / Timing Role: Low-jitter, high-slew-rate comparator-like amplifier with sub-34ns settling to 0.1%. Use Value: Achieves <100fs RMS jitter contribution at 100MHz due to 0.88nV/√Hz noise and fast settling. | Use Scenario: Headphone driver in portable audio equipment operating from 3.3V single supply. IC Role / Device Role / Timing Role: Rail-to-rail output stage delivering 2VP-P into 32Ω with <–105dBc HD2/HD3 at 1kHz. Use Value: Eliminates DC-blocking capacitors and supports true 0Hz–20kHz flat response with <0.002% THD+N. |
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 |
|---|---|---|---|
| ADA4898-2ARMZ | Higher 1.05nV/√Hz noise, lower 280MHz GBW, no shutdown, MSOP-8 package | Lacks channel-independent shutdown and bias cancellation; less suitable for power-gated multi-channel systems | Prefer LTC6229IDD#PBF when <0.88nV/√Hz noise and 500V/µs slew are required in space-constrained layouts. |
| LMH6629MA/NOPB | Higher 1.9nV/√Hz noise, higher 22mA supply current, SOIC-8 package, no rail-to-rail output | Cannot swing within 20mV of rails - requires level-shifting for 3.3V ADC interfacing | Prefer LTC6229IDD#PBF for rail-to-rail output, lower noise, and integrated shutdown in DFN packaging. |
Compared with ADA4898-2ARMZ and LMH6629MA/NOPB, the LTC6229IDD#PBF uniquely combines sub-nV/√Hz noise, 500V/µs slew, rail-to-rail output, and per-channel shutdown in a thermally efficient 3mm × 3mm DFN - making it optimal for high-density, low-power, high-fidelity signal chain designs.
Availability
LTC6229IDD#PBF is available at Aetrix Electronics and suitable for high-speed data acquisition, precision instrumentation, medical imaging front-ends, and portable test equipment requiring stable component supply across extended temperature ranges.
Supply support for LTC6229IDD#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, automotive, communications, and healthcare markets.
The LTC6229IDD#PBF belongs to ADI's LTC® precision high-speed op amp family, engineered specifically for applications demanding ultra-low noise, high slew rate, and rail-to-rail output - such as SAR ADC drivers, optical transimpedance amplifiers, and broadband active filters.
FAQ
What is the maximum operating supply voltage for the LTC6229IDD#PBF?
The LTC6229IDD#PBF has an absolute maximum total supply voltage (V+ to V–) of 12V, with a specified operating range of 2.8V to 11.75V. It is fully characterized at ±5V, +5V/0V, and +3V/0V supplies - enabling flexible use in both dual-rail and single-rail systems without derating.
Does the LTC6229IDD#PBF support rail-to-rail input common-mode range?
The LTC6229IDD#PBF supports rail-to-rail *output* swing but its input common-mode range extends only to V– – 0.1V and V+ – 1.2V. This means the inputs operate down to the negative rail but require ≥1.2V headroom from the positive rail - a design trade-off enabling high-speed performance while maintaining stability and low distortion.
How does the SHDN pin control bias current cancellation in the LTC6229IDD#PBF?
The SHDN pin on the LTC6229IDD#PBF provides dual functionality: applying V+ – 2.75V disables the amplifier (reducing supply current to 500µA), while applying V+ – 1.0V to V+ – 0.35V disables/enables internal bias current cancellation. When enabled, input bias current drops from ±44µA to ±4.4µA, reducing current noise from 6.3pA/√Hz to 3pA/√Hz - optimizing for low-noise transimpedance applications.
What is the thermal performance of the LTC6229IDD#PBF in its 3mm × 3mm DFN package?
The LTC6229IDD#PBF in the 10-lead DD package has a thermal resistance θJA of 43°C/W when mounted on a standard 4-layer PCB with adequate copper pour under the exposed V– pad. At full 32mA total supply current (16mA per channel), junction temperature rise is ~1.4°C/W - ensuring reliable operation up to +85°C ambient without forced airflow or heatsinking.
Can the LTC6229IDD#PBF drive a 100Ω load while maintaining low distortion?
Yes - the LTC6229IDD#PBF delivers ±80mA minimum output current and maintains HD2/HD3 < –79dBc at 1MHz with 4VP-P output into 100Ω (AV = +1). Its output stage is designed for heavy capacitive and resistive loads, and its 500V/µs slew rate ensures minimal slewing-induced distortion even at full-scale output transitions.
LTC6229IDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
LTC6229IDD#PBF FAQ
1.How can I place an order for LTC6229IDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6229IDD#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 LTC6229IDD#PBF reliable?
The price and inventory of LTC6229IDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6229IDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC6229IDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6229IDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6229IDD#PBF?
LTC6229IDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6229IDD#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 LTC6229IDD#PBF?
For technical support, including LTC6229IDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6229IDD#PBF requirements.
6.How does Aetrix verify that LTC6229IDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6229IDD#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 LTC6229IDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC6229IDD#PBF?
All LTC6229IDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6229IDD#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 LTC6229IDD#PBF part is unused and in its original packaging.
Return procedure for LTC6229IDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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