My Inquiry
My Account
Analog Devices Inc. LT1469IDF-2#PBF
- Part No.:
- LT1469IDF-2#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LT1469IDF-2#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:182
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1469IDF-2#PBF from Analog Devices (acquired Linear Technology) is a dual, decompensated precision high-speed operational amplifier optimized for gain ≥ 2, delivering 200MHz gain bandwidth, 30V/µs slew rate, and 16-bit DC accuracy. It serves as a high-fidelity current-to-voltage converter for 16-bit DACs and low-distortion buffer for 16-bit ADCs in industrial data acquisition systems.
For engineers reviewing the LT1469IDF-2#PBF datasheet, LT1469IDF-2#PBF pinout, LT1469IDF-2#PBF application, or LT1469IDF-2#PBF equivalent, key selection criteria include guaranteed stability at AV ≥ 2, –40°C to 85°C operation in the 12-lead 4mm × 4mm DFN package, input offset voltage ≤ 300 µV over temperature, and matched channel performance for differential signal conditioning.
Technical Context
The LT1469IDF-2#PBF 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 configurations, with trimmed inverting input bias current (≤ ±10 nA) and untrimmed noninverting input bias current (±40 nA max).
It achieves 16-bit AC/DC performance via low 5 nV/√Hz input voltage noise, 0.6 pA/√Hz input current noise, and total input noise minimized for source resistances between 1 kΩ and 20 kΩ. Channel separation exceeds 96 dB at ±12.5 V output swing into 2 kΩ load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 200 MHz - enables high open-loop gain at 100 kHz for <–96.5 dB THD at 100 kHz, 10 VP-P. |
| Slew Rate | 30 V/µs - supports full-scale transient response in active filters and instrumentation amplifiers without slewing distortion. |
| Input Offset Voltage | ≤ 300 µV (–40°C to 85°C) - ensures <1 LSB error in 16-bit DAC I-to-V conversion with 6 kΩ feedback resistor. |
| Settling Time | 800 ns to 150 µV (10 V step, AV = –1) - meets timing requirements for high-throughput 16-bit data acquisition systems. |
| Supply Range | ±5 V to ±15 V - compatible with standard industrial bipolar supply rails and supports rail-to-rail output swing up to ±12.8 V into 2 kΩ. |
| Input Noise Density | 5 nV/√Hz @ 10 kHz - combined with 0.6 pA/√Hz current noise, optimizes SNR for 1 kΩ–20 kΩ sensor interface impedances. |
| Operating Temperature | –40°C to +85°C - qualified for industrial embedded control and test equipment environments. |
Pinout & Package
The LT1469IDF-2#PBF is housed in a 12-lead (4 mm × 4 mm) plastic DFN package with exposed pad (Pin 13) connected to V–. The package is lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 11, 12 | No Connect (N/C) | Unused internal terminals; must be left floating or tied to ground per layout guidelines - no functional role in signal path. |
| 5, 6 | +IN A / –IN A | Differential inputs for Amplifier A; inverting input biased for minimal offset in I-to-V applications. |
| 7, 8 | OUT A / V– | Amplifier A output and negative supply rail - V– serves as common reference for both amplifiers and exposed thermal pad. |
| 9, 10 | +IN B / –IN B | Differential inputs for Amplifier B; identical electrical characteristics and trimming to Amplifier A. |
| 11 | OUT B | Amplifier B output - independent channel enables dual-path signal conditioning without crosstalk degradation (>96 dB isolation). |
| 13 | Exposed Pad (GND) | Internally connected to V–; mandatory solder connection for thermal dissipation and EMI suppression - not a signal ground. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit DC accuracy | Guaranteed input offset voltage ≤ 300 µV and drift ≤ 6 µV/°C over –40°C to 85°C enables direct interface with 16-bit DACs/ADCs without calibration. |
| Gain ≥ 2 stability | Decompensated design ensures phase margin > 45° only when closed-loop gain is ≥ 2 - prevents oscillation in precision I-to-V and noninverting buffer topologies. |
| Optimized input noise | Total input noise minimized for RS = 1 kΩ–20 kΩ - maximizes dynamic range when interfacing photodiodes, strain gauges, or DAC outputs. |
| Matched dual channels | Input offset match ≤ 800 µV and CMRR match ≥ 89 dB support differential measurement architectures with common-mode rejection integrity. |
| Industrial temperature grade | Specified and tested over –40°C to +85°C - eliminates derating concerns in programmable logic controller (PLC) analog I/O modules and motor drive feedback circuits. |
Applications
| 16-Bit DAC Current-to-Voltage Converter | ADC Buffer for High-Accuracy Data Acquisition |
|---|---|
Use Scenario: Converting output current from a 16-bit multiplying DAC (e.g., LTC1597) into a precise unipolar/bipolar voltage for analog actuator control. IC Role / Device Role / Timing Role: Precision I-to-V transimpedance amplifier operating at AV = –1 with 6 kΩ feedback resistor and 20 pF compensation capacitance. Use Value: Input offset voltage + IB × 6 kΩ remains <1 LSB error across temperature; 800 ns settling ensures compatibility with 1 MSPS DAC update rates. | Use Scenario: Driving the input of a 16-bit sampling ADC (e.g., LTC1604) in a multichannel industrial sensor front-end. IC Role / Device Role / Timing Role: Low-distortion, DC-accurate noninverting buffer with AV = 1 or AV = 2, preserving full-scale SNR and linearity. Use Value: –96.5 dB THD at 100 kHz and 150 µV settling guarantee 16-bit effective resolution across AC and DC signals up to 100 kHz bandwidth. |
| Low-Distortion Active Filter | Photodiode Amplifier for Precision Light Sensing |
Use Scenario: Implementing a 4th-order Butterworth anti-aliasing filter before a high-speed 16-bit ADC in automated test equipment. IC Role / Device Role / Timing Role: Dual-channel op amp configured as two cascaded 2nd-order sections, each operating at AV = 2 for stability and bandwidth. Use Value: 200 MHz GBW and 30 V/µs slew rate maintain filter group delay flatness and prevent harmonic distortion at full-scale 10 VP-P outputs. | Use Scenario: Amplifying low-level photocurrent from a silicon photodiode in optical encoder or spectrophotometer feedback loop. IC Role / Device Role / Timing Role: Transimpedance amplifier with feedback resistor selected for 1 kΩ–20 kΩ optimal noise matching and CF compensation. Use Value: Total input noise density minimized in this range delivers highest possible SNR; low 10 nA max inverting input bias current avoids dark-current-induced offset errors. |
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 |
|---|---|---|---|
| LT1469IS8-2#PBF | Same core specs but in 8-lead SOIC package; higher θJA (190°C/W vs 37°C/W); wider body; no exposed thermal pad. | Limited power dissipation headroom in high-output-current or high-ambient-temperature PCB layouts. | Select when SOIC footprint compatibility is required and thermal load is ≤ 150 mW per amplifier. |
| LT1468CS8#PBF | Single-channel version; 90 MHz GBW, 22 V/µs slew rate; 75 µV max VOS; unity-gain stable; SOIC-8 only. | Cannot replace dual-channel functionality; lower speed limits use in >100 kHz active filters or fast-settling buffers. | Select for single-ended, unity-gain applications where space allows separate amplifiers and lower bandwidth suffices. |
Compared with LT1469IS8-2#PBF, the LT1469IDF-2#PBF offers superior thermal performance and smaller footprint; compared with LT1468CS8#PBF, it provides dual-channel integration and higher bandwidth essential for synchronized differential signal paths in 16-bit systems.
Availability
LT1469IDF-2#PBF is available at Aetrix Electronics and suitable for industrial data acquisition systems, precision DAC/ADC interface modules, and high-accuracy active filter designs requiring stable component supply across extended temperature ranges.
Supply support for LT1469IDF-2#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, formed through the acquisition of Linear Technology in 2017.
The LT1469IDF-2#PBF belongs to ADI's precision high-speed op amp product line, engineered specifically for 16-bit data conversion systems where simultaneous DC accuracy, AC fidelity, and channel matching are critical.
FAQ
What is the minimum stable gain for LT1469IDF-2#PBF?
The LT1469IDF-2#PBF is decompensated and requires a minimum closed-loop gain of 2 (AV ≥ 2) for stability, including configurations with AV = –1. This is confirmed in the Applications Information section and Absolute Maximum Ratings table. Using LT1469IDF-2#PBF at unity gain risks oscillation and must be avoided unless external compensation is applied per Linear Technology Application Note 14692.
Does LT1469IDF-2#PBF support ±5V supplies?
Yes, LT1469IDF-2#PBF is fully specified for operation on ±5V supplies across the –40°C to 85°C range, with parameters including input offset voltage (≤ 350 µV), slew rate (≥ 22 V/µs), and output swing (≥ ±2.8 V into 2 kΩ) validated under these conditions per the Electrical Characteristics tables.
What is the function of Pin 13 on the LT1469IDF-2#PBF DFN package?
Pin 13 is the exposed thermal pad on the LT1469IDF-2#PBF DFN package, internally connected to V–. It must be soldered to a PCB copper pour tied to the negative supply plane to ensure proper thermal dissipation (θJA = 37°C/W) and EMI suppression - leaving it unconnected degrades both junction temperature and high-frequency stability.
Can LT1469IDF-2#PBF be used in inverting amplifier configurations?
Yes, LT1469IDF-2#PBF is explicitly optimized for inverting applications: its inverting input bias current is trimmed to ≤ ±10 nA at zero common-mode voltage, minimizing offset error in I-to-V converters. However, gain must remain ≥ 2 (e.g., AV = –2, –5, –10), and balanced source resistance is discouraged as it increases noise and degrades DC accuracy.
How does LT1469IDF-2#PBF achieve 16-bit accuracy in data acquisition systems?
LT1469IDF-2#PBF achieves 16-bit accuracy via guaranteed maximum input offset voltage ≤ 300 µV, drift ≤ 6 µV/°C, and large-signal voltage gain ≥ 75 V/mV over temperature - ensuring residual error remains below 1 LSB (15.3 µV for ±10 V full scale) in DAC I-to-V and ADC buffer roles, as verified in the –40°C to 85°C Electrical Characteristics tables.
LT1469IDF-2#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tube
- 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:
- 100 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:
- 12-DFN (4x4)
LT1469IDF-2#PBF FAQ
1.How can I place an order for LT1469IDF-2#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1469IDF-2#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 LT1469IDF-2#PBF reliable?
The price and inventory of LT1469IDF-2#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1469IDF-2#PBF is usually 5 days.
3.What payment methods are accepted for LT1469IDF-2#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1469IDF-2#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1469IDF-2#PBF?
LT1469IDF-2#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1469IDF-2#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 LT1469IDF-2#PBF?
For technical support, including LT1469IDF-2#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1469IDF-2#PBF requirements.
6.How does Aetrix verify that LT1469IDF-2#PBF is sourced from the original manufacturer or authorized distributors?
All LT1469IDF-2#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 LT1469IDF-2#PBF meets industry standards.
7.What is the process for return or replacement of LT1469IDF-2#PBF?
All LT1469IDF-2#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1469IDF-2#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 LT1469IDF-2#PBF part is unused and in its original packaging.
Return procedure for LT1469IDF-2#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1469IDF-2#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…
