My Inquiry
My Account
Analog Devices Inc. LT1469CDF#PBF
- Part No.:
- LT1469CDF#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LT1469CDF#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:123
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1469CDF#PBF from Analog Devices (acquired Linear Technology) is a dual precision high-speed operational amplifier optimized for 16-bit data acquisition systems. It delivers 90 MHz gain bandwidth, 22 V/µs slew rate, 900 ns settling to 150 µV for 10 V steps, ±12.8 V output swing into 2 kΩ, and 5 nV/√Hz input voltage noise - enabling high-fidelity DAC current-to-voltage conversion and ADC buffering in ±5 V or ±15 V supplies.
For engineers reviewing the LT1469CDF#PBF datasheet, LT1469CDF#PBF pinout, LT1469CDF#PBF application, or LT1469CDF#PBF equivalent, key selection criteria include guaranteed 16-bit DC accuracy (≤125 µV max VOS, 3 µV/°C drift), low distortion (–96.5 dB THD at 100 kHz), unity-gain stability, and DFN-12 package thermal performance (θJA = 43°C/W) for space-constrained instrumentation designs.
Technical Context
The LT1469CDF#PBF employs a single-stage, fully differential architecture with bias current cancellation tailored for inverting configurations - minimizing errors in DAC I-to-V converters. Its input stage features 100 Ω series resistors and back-to-back diodes for ±10 mA input protection, while the exposed pad (Pin 13) must be connected to V– for optimal thermal and electrical performance.
DC precision is enhanced by matched input offset voltage (≤225 µV max for A-grade DF packages), low inverting input bias current (≤10 nA), and high CMRR (110 dB at ±12.5 V common-mode). AC performance relies on 90 MHz GBW and 22 V/µs slew rate to maintain linearity up to 100 kHz with 10 VP-P signals, supported by low total input noise optimized for source impedances between 1 kΩ and 20 kΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 90 MHz at ±15 V - ensures ≥70 dB open-loop gain at 100 kHz for low distortion in ADC buffer applications. |
| Slew Rate | 22 V/µs at ±15 V - enables full-scale 10 V step response within 455 ns, critical for active filter and instrumentation amplifier large-signal fidelity. |
| Input Offset Voltage | Max 125 µV at ±15 V - supports ≤0.002% error in 16-bit (±10 V) DAC I-to-V conversion without trimming. |
| Settling Time | 900 ns to 150 µV (0.0023% of 10 V) - meets 16-bit settling requirement for high-speed data acquisition sampling. |
| Output Swing | ±12.8 V into 2 kΩ at ±15 V - delivers rail-to-rail usable dynamic range for bipolar signal conditioning stages. |
| Input Voltage Noise | 5 nV/√Hz at 10 kHz - dominates total noise for source resistances <1 kΩ, enabling low-noise photodiode amplification. |
| Supply Current | 5.2 mA per amplifier at ±15 V - balances speed and power for dual-channel portable instrumentation. |
Pinout & Package
The LT1469CDF#PBF is housed in a 12-lead (4 mm × 4 mm) plastic DFN package with an exposed thermal pad (Pin 13) that must be soldered to V–. This leadless package provides low θJA = 43°C/W and compact footprint for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply | Accepts +5 V or +15 V; must be bypassed with 0.01–0.1 µF RF capacitor in parallel with 1–10 µF tantalum. |
| OUT B | Amplifier B output | Capable of ±12.8 V swing into 2 kΩ; drives capacitive loads up to 100 pF in unity-gain configuration. |
| –IN B | Inverting input B | Bias current trimmed to ≤10 nA at 0 V common-mode; primary node for precision I-to-V conversion. |
| +IN B | Noninverting input B | Untrimmed bias current (≤40 nA); requires guard ring at same potential for microvolt-level DC integrity. |
| N/C | No connect | Not internally bonded; left floating or tied to ground per layout best practices. |
| N/C | No connect | Not internally bonded; no electrical function. |
| OUT A | Amplifier A output | Electrically identical to OUT B; supports independent dual-channel operation with >100 dB channel separation. |
| –IN A | Inverting input A | Matched to –IN B for differential pair applications; offset voltage match ≤225 µV (A-grade). |
| +IN A | Noninverting input A | Same untrimmed characteristics as +IN B; avoid balanced source resistors to prevent DC accuracy degradation. |
| V– | Negative supply | Accepts –5 V or –15 V; exposed pad (Pin 13) must be soldered directly to this net for thermal and noise control. |
| N/C | No connect | Not internally bonded; no routing required. |
| N/C | No connect | Not internally bonded; no routing required. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit DC accuracy | Guaranteed ≤125 µV input offset voltage and 3 µV/°C drift over 0°C to 70°C - eliminates need for system-level calibration in precision DAC interfaces. |
| Low-distortion AC performance | –96.5 dB THD at 100 kHz with 10 VP-P output - preserves signal integrity in audio line drivers and active filters requiring <0.0015% harmonic content. |
| Optimized total input noise | Minimum integrated noise achieved with source resistance between 1 kΩ and 20 kΩ - enables optimal SNR in photodiode and sensor front-end amplifiers. |
| Unity-gain stable | Stable with gain ≥1 without external compensation - simplifies design of noninverting ADC buffers and voltage followers without risk of oscillation. |
| Thermally enhanced DFN | 4 mm × 4 mm DFN with exposed V– pad (θJA = 43°C/W) - supports continuous 5.2 mA per amplifier operation in compact industrial enclosures without forced air. |
Applications
| 16-Bit DAC Current-to-Voltage Converter | ADC Input Buffer |
|---|---|
Use Scenario: Converting 16-bit current-output DAC (e.g., LTC1597) into precise ±10 V bipolar analog voltage with minimal integral nonlinearity. IC Role / Device Role / Timing Role: Dual op-amp configured as inverting I-to-V converter (Channel A) and reference inverter (Channel B) for bipolar output swing. Use Value: 900 ns settling to 150 µV ensures full 16-bit code transitions settle before next sample clock edge in 1 MSPS systems. | Use Scenario: Driving SAR or sigma-delta ADC inputs with low source impedance, wide bandwidth, and minimal THD+N degradation. IC Role / Device Role / Timing Role: Noninverting unity-gain buffer isolating high-impedance signal sources from ADC sampling capacitance. Use Value: –96.5 dB THD at 100 kHz and ±12.8 V swing preserve ENOB >15.5 bits across full input frequency band. |
| Low-Distortion Active Filter | Photodiode Transimpedance Amplifier |
Use Scenario: Implementing 4th-order Butterworth anti-aliasing or reconstruction filters in medical imaging and test equipment. IC Role / Device Role / Timing Role: Dual-channel used for cascaded 2nd-order sections (e.g., MFB topology) with matched GBW and phase margin. Use Value: 90 MHz GBW and 22 V/µs slew rate maintain <0.01 dB passband ripple and linear phase up to 100 kHz. | Use Scenario: Amplifying low-level photocurrents (nA–µA) from scientific-grade photodiodes with femtoampere-level input bias control. IC Role / Device Role / Timing Role: Inverting transimpedance amplifier using –IN input with guarded layout and 15 pF feedback capacitance. Use Value: ≤10 nA inverting input bias current and 5 nV/√Hz voltage noise maximize dynamic range for sub-picoamp signals. |
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 |
|---|---|---|---|
| ADA4898-2ARMZ | Higher 210 MHz GBW but higher 10.5 nV/√Hz noise; 1.2 mA lower supply current; SOIC-8 only. | Preferred for >100 MHz small-signal bandwidth needs; less suitable for 16-bit DC-critical DAC I-to-V due to 250 µV VOS. | Select when AC bandwidth >120 MHz is required and DC offset can be calibrated out. |
| OPA2189IDR | Zero-drift architecture; 0.005 µV/°C drift vs. 3 µV/°C; 5.6 V/µs slew rate; 12 V/µs max; DFN-10 package. | Better for µV-level DC stability over temperature; insufficient slew for 10 V step in <1 µs; not unity-gain stable. | Choose for ultra-low drift applications where speed <10 V/µs is acceptable and external compensation is feasible. |
Compared with ADA4898-2ARMZ and OPA2189IDR, the LT1469CDF#PBF uniquely balances 16-bit DC accuracy, 22 V/µs slew rate, and unity-gain stability in a thermally efficient DFN-12 - making it irreplaceable for uncalibrated, high-fidelity DAC interface and ADC buffer designs operating from ±5 V or ±15 V rails.
Availability
LT1469CDF#PBF is available at Aetrix Electronics and suitable for precision instrumentation, high-accuracy data acquisition systems, and 16-bit DAC interface circuits requiring stable component supply across industrial temperature ranges.
Supply support for LT1469CDF#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 LT1469CDF#PBF belongs to Linear Technology's precision high-speed op-amp product line, engineered specifically for applications demanding simultaneous 16-bit DC accuracy and broadband AC fidelity - such as metrology-grade data converters and medical imaging front-ends.
FAQ
What is the maximum input offset voltage specification for LT1469CDF#PBF over its operating temperature range?
The LT1469CDF#PBF has a maximum input offset voltage of 125 µV at ±15 V supply and 200 µV at ±5 V supply, tested at TA = 25°C. Over the full 0°C to 70°C range, the maximum is 225 µV (±15 V) and 275 µV (±5 V) for the A-grade DFN variant. These values are guaranteed per the datasheet's "l"-denoted specifications and reflect worst-case matching between the two amplifiers in the dual package.
Can LT1469CDF#PBF drive a 100 pF capacitive load in unity-gain configuration without oscillation?
Yes, the LT1469CDF#PBF is specified to drive up to 100 pF in unity-gain configuration without external compensation. The device's internal compensation and robust phase margin (>60° at ±15 V) ensure stability under this condition. For loads exceeding 100 pF, a small series resistor (e.g., 10–50 Ω) between output and load, plus a feedback capacitor as described in Figure 3 of the datasheet, is required to maintain stability.
How does the exposed thermal pad (Pin 13) of LT1469CDF#PBF affect thermal performance and grounding?
The exposed pad (Pin 13) of the LT1469CDF#PBF must be soldered directly to the V– net to achieve the specified θJA = 43°C/W. This connection serves both thermal dissipation and low-impedance grounding - reducing output noise and improving PSRR. Leaving the pad unconnected or floating increases junction temperature by >25°C at full load and degrades AC performance due to increased parasitic inductance.
Is LT1469CDF#PBF suitable for inverting amplifier configurations with source resistances above 20 kΩ?
No - the LT1469CDF#PBF's total input noise is optimized for source resistances between 1 kΩ and 20 kΩ. Above 20 kΩ, input current noise (0.6 pA/√Hz) dominates, increasing integrated noise. For high-Z sensor interfaces, use lower-noise alternatives like the LT1028 or consider guarding techniques and lower feedback resistors to keep total noise below 10 nV/√Hz.
What is the minimum supply voltage required for LT1469CDF#PBF to meet its specified PSRR performance?
The LT1469CDF#PBF guarantees PSRR performance down to ±4.5 V total supply voltage (i.e., ±4.5 V rails). Below this, PSRR degrades rapidly - dropping below 95 dB - and other parameters including output swing and slew rate fall outside specification. Operation at ±5 V is recommended for full parameter compliance, especially in battery-powered instrumentation where headroom is constrained.
LT1469CDF#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:
- 22V/µs
- Gain Bandwidth Product:
- 90 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):
- 5 V
- Voltage - Supply Span (Max):
- 9 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DFN (4x4)
LT1469CDF#PBF FAQ
1.How can I place an order for LT1469CDF#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1469CDF#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 LT1469CDF#PBF reliable?
The price and inventory of LT1469CDF#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1469CDF#PBF is usually 5 days.
3.What payment methods are accepted for LT1469CDF#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1469CDF#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1469CDF#PBF?
LT1469CDF#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1469CDF#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 LT1469CDF#PBF?
For technical support, including LT1469CDF#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1469CDF#PBF requirements.
6.How does Aetrix verify that LT1469CDF#PBF is sourced from the original manufacturer or authorized distributors?
All LT1469CDF#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 LT1469CDF#PBF meets industry standards.
7.What is the process for return or replacement of LT1469CDF#PBF?
All LT1469CDF#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1469CDF#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 LT1469CDF#PBF part is unused and in its original packaging.
Return procedure for LT1469CDF#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1469CDF#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…
