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Analog Devices Inc. LT1469IS8-2#TRPBF
- Part No.:
- LT1469IS8-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1469IS8-2#TRPBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,182
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Product details
Overview
LT1469IS8-2#TRPBF from Analog Devices (acquired Linear Technology) is a dual, decompensated precision high-speed operational amplifier optimized for gain ≥ 2 configurations. It delivers 200MHz gain bandwidth, 30V/µs slew rate, and 16-bit DC accuracy (max 500µV input offset voltage over –40°C to 85°C), targeting DAC current-to-voltage conversion and ADC buffer stages in high-resolution data acquisition systems.
For engineers reviewing the LT1469IS8-2#TRPBF datasheet, LT1469IS8-2#TRPBF pinout, LT1469IS8-2#TRPBF application, or LT1469IS8-2#TRPBF equivalent, this page provides verified specifications, SOIC-8 package terminal mapping, real-world settling behavior (800ns to 150µV), noise performance (5nV/√Hz), and validated alternatives for 16-bit signal chain design.
Technical Context
The LT1469IS8-2#TRPBF uses a decompensated architecture requiring minimum closed-loop gain of 2 (AV = –1) for stability, enabling higher bandwidth than unity-gain-stable counterparts. Its input stage features bias current cancellation optimized for inverting applications, with trimmed inverting input bias current (±40nA max over temperature) and untrimmed noninverting input bias current.
It achieves 16-bit AC/DC performance via low distortion (–96.5dB THD at 100kHz, 10VP-P), fast settling (800ns to 150µV on 10V step), and total input noise optimized for source resistances between 1kΩ and 20kΩ. Specified across ±5V and ±15V supplies, it operates from –40°C to 85°C with guaranteed performance in the industrial temperature grade.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 200MHz - Enables high open-loop gain at frequency for distortion reduction in 16-bit DAC I-to-V and ADC buffer applications. |
| Slew Rate | 30V/µs (±15V) - Supports full-scale transient response in active filters and instrumentation amplifiers without slewing-induced distortion. |
| Input Offset Voltage | 500µV max (–40°C to 85°C) - Ensures ≤1 LSB error in 16-bit systems with 10V full-scale range (10V/65536 ≈ 153µV/LSB). |
| Settling Time | 800ns to 150µV (10V step, AV = –1) - Meets timing budgets for high-throughput data acquisition with 16-bit settling fidelity. |
| Input Voltage Noise | 5nV/√Hz - Dominates total noise only below 1kΩ source resistance; optimized for mid-range sensor and DAC interface impedances. |
| Common Mode Rejection Ratio | 92dB min (±12.5V, –40°C to 85°C) - Maintains DC accuracy when driven by asymmetric common-mode signals in industrial sensor front-ends. |
| Supply Current | 7mA per amplifier (±15V, –40°C to 85°C) - Balances speed and power for dual-channel precision analog signal conditioning. |
Pinout & Package
LT1469IS8-2#TRPBF is housed in an 8-lead plastic SOIC (Small Outline Integrated Circuit) package with narrow 0.150-inch body width, JEDEC MS-012 compliant. Pin 1 is marked with a notch or dot; exposed pad is not present in SOIC variant.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V– (Negative Supply) | Ground reference for negative rail; must be connected to system ground or negative supply; input common-mode range extends to this rail. |
| 2 | –IN A (Inverting Input, Amp A) | High-impedance node for feedback network; bias current trimmed for minimal error in I-to-V converter topologies. |
| 3 | +IN A (Noninverting Input, Amp A) | Untrimmed bias current path; avoid balanced source resistors as they degrade DC accuracy and increase noise. |
| 4 | OUT A (Output, Amp A) | Capable of ±12.8V swing into 2kΩ load at ±15V supply; supports rail-to-rail output drive for 16-bit dynamic range. |
| 5 | OUT B (Output, Amp B) | Dual independent output; channel separation ≥96dB ensures crosstalk immunity in multi-channel acquisition systems. |
| 6 | +IN B (Noninverting Input, Amp B) | Matches Amp A's noninverting input characteristics; not trimmed-requires careful layout to minimize thermocouple errors. |
| 7 | –IN B (Inverting Input, Amp B) | Trimmed bias current path identical to Pin 2; enables matched dual-channel inverting gain stages without inter-channel offset drift. |
| 8 | V+ (Positive Supply) | Accepts ±5V or ±15V operation; PSRR ≥93dB maintains output accuracy despite supply ripple in noisy industrial environments. |
Key Features
| Feature | Design Value |
|---|---|
| Stable at AV ≥ 2 | Enables 200MHz GBW in gain-of-2 configurations-2× higher bandwidth than unity-gain-stable LT1469 in same footprint. |
| 16-bit DC accuracy | 500µV max VOS and 6µV/°C max drift over –40°C to 85°C ensure <1 LSB error in 16-bit systems across industrial temperature range. |
| Low distortion | –96.5dB THD at 100kHz, 10VP-P enables clean signal reconstruction in audio-grade and spectral analysis applications. |
| Optimized input noise | Total input noise minimized for RS = 1kΩ–20kΩ-ideal for photodiode transimpedance amps and DAC I-to-V converters with typical 2k–10k feedback. |
| Input stage protection | 100Ω series resistors + back-to-back diodes on each input limit differential input current to <10mA, supporting robust field deployment. |
Applications
| 16-Bit DAC I-to-V Converter | ADC Buffer |
|---|---|
Use Scenario: Converts 16-bit current-output DAC (e.g., LTC1597) into precise voltage with minimal glitch-induced error. IC Role / Device Role / Timing Role: Precision transimpedance amplifier operating at AV = –1 with 2kΩ feedback and 22pF compensation. Use Value: Settles to 150µV (0.01%) in 800ns, matching DAC update rates while maintaining monotonicity and linearity. |
Use Scenario: Drives SAR or sigma-delta ADC inputs with full-scale 10V signals while preserving 16-bit ENOB. IC Role / Device Role / Timing Role: Noninverting unity-gain buffer with low distortion and high CMRR to reject board-level noise. Use Value: Delivers –96.5dB THD at 100kHz and 92dB CMRR, ensuring >90dB SINAD in 16-bit ADC front-ends. |
| Low Distortion Active Filter | Photodiode Amplifier |
Use Scenario: Implements 4th-order Butterworth filter for anti-aliasing or tone generation in test equipment. IC Role / Device Role / Timing Role: Dual op-amp in MFB or Sallen-Key topology with gain ≥ 2 per stage for stability. Use Value: 30V/µs slew rate prevents waveform clipping on large-signal transients; 200MHz GBW supports filter Q-factor control up to 10MHz. |
Use Scenario: Amplifies low-current photodiode outputs (nA range) in optical sensing and medical pulse oximetry. IC Role / Device Role / Timing Role: Transimpedance amplifier with trimmed inverting input bias current minimizing dark-current error. Use Value: 10nA max inverting input bias current (–40°C to 85°C) reduces offset drift in high-gain TIA configurations (>1MΩ feedback). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1469CS8-2#TRPBF | Same silicon, commercial temperature range (0°C to 70°C); 350µV max VOS vs 500µV for LT1469IS8-2#TRPBF. | Valid for lab/test equipment where ambient temperature stays within 0°C–70°C; not rated for industrial enclosures. | Select LT1469CS8-2#TRPBF only if operating environment remains within commercial temp range and tighter VOS is required. |
| LT1468CS8#TRPBF | Single-channel, unity-gain stable version; 75µV max VOS but lower 90MHz GBW and 22V/µs slew rate. | Applicable where gain < 2 is needed or space-constrained single-channel designs dominate; lacks dual-channel integration. | Choose LT1468CS8#TRPBF when unity-gain stability is mandatory or dual-channel functionality is unnecessary. |
Compared with LT1469CS8-2#TRPBF, the LT1469IS8-2#TRPBF trades 150µV higher VOS for guaranteed –40°C to 85°C operation, while LT1468CS8#TRPBF sacrifices bandwidth and channel count for unity-gain flexibility and lower offset-making each suitable for distinct thermal, topological, and integration requirements.
Availability
LT1469IS8-2#TRPBF is available at Aetrix Electronics and suitable for high-accuracy data acquisition systems, 16-bit DAC interfaces, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for LT1469IS8-2#TRPBF 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 acquired Linear Technology in 2017 and maintains its precision analog portfolio, including high-speed op amps with DC accuracy for demanding measurement applications.
The LT1469 family was designed specifically for 16-bit data conversion signal chains-balancing GHz-class bandwidth with microvolt-level DC precision in dual-channel SOIC and DFN packages.
FAQ
What is the minimum stable gain for LT1469IS8-2#TRPBF?
The LT1469IS8-2#TRPBF is decompensated and requires a minimum closed-loop gain of 2 (AV ≥ 2) for stability, including AV = –1 configurations. Attempting unity-gain (AV = 1) operation risks oscillation; for such cases, use the unity-gain-stable LT1469 or LT1468. Stability depends on feedback ratio at frequencies where loop gain crosses unity, not just DC gain.
Does LT1469IS8-2#TRPBF support ±5V operation?
Yes, LT1469IS8-2#TRPBF is fully specified for ±5V and ±15V supply voltages across its –40°C to 85°C operating range. At ±5V, it delivers 130MHz GBW (typ), 22V/µs slew rate (typ), and ±2.8V output swing into 2kΩ-enabling low-voltage 16-bit signal chains without performance compromise.
How does input bias current matching affect dual-channel performance in LT1469IS8-2#TRPBF?
LT1469IS8-2#TRPBF specifies ΔIB– ≤78nA (max) over temperature, ensuring matched inverting input bias currents between channels. This minimizes inter-channel offset drift in dual I-to-V converters or differential receivers, preserving common-mode rejection and channel-to-channel gain tracking in precision acquisition systems.
Can LT1469IS8-2#TRPBF drive heavy capacitive loads?
LT1469IS8-2#TRPBF is not optimized for direct capacitive loading; driving >100pF typically requires isolation resistance or feedback capacitor compensation. In DAC I-to-V applications with 20pF DAC output capacitance, a 6.8pF feedback capacitor (CF) with 2kΩ feedback resistor stabilizes the loop-verified in typical application Figure TA01a.
What is the maximum junction temperature and thermal resistance for LT1469IS8-2#TRPBF in SOIC-8?
LT1469IS8-2#TRPBF in SOIC-8 has θJA = 190°C/W and a maximum junction temperature (TJMAX) of 150°C. With ±15V supplies and both amplifiers active, total dissipation is ~210mW; at 25°C ambient, junction temperature rises ~40°C-well within safe margin. No heat sink is required under normal operation.
LT1469IS8-2#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 30V/µs
- Gain Bandwidth Product:
- 200 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3 nA
- Voltage - Input Offset:
- 50 µV
- Current - Supply:
- 4.1mA (x2 Channels)
- Current - Output / Channel:
- 22 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1469IS8-2#TRPBF FAQ
1.How can I place an order for LT1469IS8-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1469IS8-2#TRPBF 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 LT1469IS8-2#TRPBF reliable?
The price and inventory of LT1469IS8-2#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1469IS8-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1469IS8-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1469IS8-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1469IS8-2#TRPBF?
LT1469IS8-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1469IS8-2#TRPBF 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 LT1469IS8-2#TRPBF?
For technical support, including LT1469IS8-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1469IS8-2#TRPBF requirements.
6.How does Aetrix verify that LT1469IS8-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1469IS8-2#TRPBF 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 LT1469IS8-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1469IS8-2#TRPBF?
All LT1469IS8-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1469IS8-2#TRPBF, 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 LT1469IS8-2#TRPBF part is unused and in its original packaging.
Return procedure for LT1469IS8-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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