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Analog Devices Inc. LT6203IDD#TRPBF
- Part No.:
- LT6203IDD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT6203IDD#TRPBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,889
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Product details
Overview
LT6203IDD#TRPBF from Analog Devices (formerly Linear Technology) is a dual rail-to-rail input/output operational amplifier optimized for low-noise, low-power signal conditioning in 3V–5V systems. It delivers 1.9nV/√Hz input voltage noise at 100kHz, 100MHz gain bandwidth, 25V/µs slew rate, and draws only 2.5mA per amplifier. It is widely used in DSL receivers, A/D driver stages, and battery-powered instrumentation.
For engineers reviewing the LT6203IDD#TRPBF datasheet, LT6203IDD#TRPBF pinout, LT6203IDD#TRPBF application, or LT6203IDD#TRPBF equivalent, key selection criteria include its DFN-8 package footprint, –40°C to 85°C industrial temperature grade, rail-to-rail output swing within 35mV of rails at 15mA, and verified performance under ±5V, 5V, and 3V supplies.
Technical Context
The LT6203IDD#TRPBF integrates two fully independent, unity-gain-stable amplifiers with matched input offset voltage (≤1.0mV typical), high CMRR (≥75dB over full common-mode range), and low distortion (<–80dBc at 1MHz). Its architecture supports single-supply operation down to 2.5V while maintaining 90MHz small-signal bandwidth and 1.8MHz full-power bandwidth at 3VP-P output.
It features balanced input noise current density (0.75pA/√Hz at 10kHz), wide input common-mode range (including both supply rails), and output drive capability of ±30mA minimum - enabling direct interface to SAR ADC inputs and active filter stages without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Noise Voltage Density | 1.9nV/√Hz at 100kHz - enables high-resolution sensor front-ends without degrading SNR |
| Gain Bandwidth Product | 100MHz - supports stable closed-loop gain ≥10 up to 10MHz |
| Slew Rate | 25V/µs - ensures faithful reproduction of fast transients in data acquisition |
| Supply Current per Amp | 2.5mA at 5V - allows dual-channel operation under 5.5mW total quiescent power |
| Input Offset Voltage | 0.8mV max at 25°C, VCM = half-supply - minimizes DC error in precision gain stages |
| Output Swing | Within 35mV of rails at 15mA load - maximizes dynamic range in 3V systems |
| Common-Mode Rejection | 75dB min over full rail-to-rail input range - maintains accuracy in noisy environments |
Pinout & Package
LT6203IDD#TRPBF is housed in an 8-lead (3mm × 3mm) plastic DFN package with exposed metal pad connected to V–. The package is lead-free, RoHS-compliant, and designed for high thermal efficiency (θJA = 43°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT A | Amplifier A output | Capable of sourcing/sinking ≥30mA; rail-to-rail swing supports direct ADC driving |
| 2: –IN A | Inverting input A | High-impedance node (12kΩ differential); compatible with high-Z sensor interfaces |
| 3: +IN A | Non-inverting input A | Common-mode range extends to both rails - enables true single-supply biasing |
| 4: V– | Negative supply / ground reference | Internally bonded to underside metal pad; must be low-impedance connection for thermal stability |
| 5: V+ | Positive supply | Accepts 2.5V–12.6V; PSRR ≥60dB ensures immunity to supply ripple |
| 6: OUT B | Amplifier B output | Fully independent channel; matches OUT A in drive strength and settling behavior |
| 7: –IN B | Inverting input B | Matched to –IN A (offset match ≤1.0mV) - critical for differential signal conditioning |
| 8: +IN B | Non-inverting input B | Same rail-to-rail input specification as +IN A; supports matched dual-path designs |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full utilization of 3V supply headroom - no level-shifting needed for ADC interfacing |
| Ultralow 1.9nV/√Hz noise | Preserves signal integrity in low-amplitude sensor amplification (e.g., piezoelectric, strain gauge) |
| Unity-gain stable | Eliminates need for external compensation - simplifies layout in gain-of-1 buffer applications |
| –40°C to 85°C operating range | Qualified for industrial environments including telecom line cards and portable test equipment |
| DFN-8 thermal performance | θJA = 43°C/W allows sustained 2.5mA/channel operation without heatsinking |
Applications
| DSL Receiver Front-End | Rail-to-Rail Buffer Amplifier |
|---|---|
Use Scenario: Differential line receiver in ADSL/VDSL modems processing weak analog signals from twisted-pair lines. IC Role / Device Role / Timing Role: Dual op amp configured as low-noise, high-CMRR differential receiver with local echo cancellation. Use Value: 1.9nV/√Hz noise and –80dBc harmonic distortion at 1MHz ensure clean signal recovery in presence of upstream interference. | Use Scenario: Single-supply buffer between high-impedance sensor and SAR ADC input. IC Role / Device Role / Timing Role: Unity-gain follower providing low-output-impedance drive while preserving DC accuracy. Use Value: Rail-to-rail output swing (within 35mV of rails) maximizes usable ADC input range in 3V systems. |
| Low-Power Data Acquisition | Battery-Powered Instrumentation |
Use Scenario: Signal conditioning stage in portable multimeters or environmental sensors. IC Role / Device Role / Timing Role: Dual-channel amplifier for simultaneous voltage/current measurement paths. Use Value: 2.5mA per amplifier enables >100-hour battery life on coin-cell power while maintaining 100MHz bandwidth. | Use Scenario: Front-end gain stage in handheld oscilloscope probes or portable ECG monitors. IC Role / Device Role / Timing Role: Low-noise, low-distortion amplifier for biopotential signal amplification. Use Value: Input offset voltage drift ≤9µV/°C ensures stable calibration across operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4897-2ARMZ | Lower noise (1.0nV/√Hz), higher supply current (3.2mA/amp), same DFN-8 package | Better for ultra-low-noise preamps; less suitable for battery-constrained designs | Select when noise dominates budget and power is secondary |
| OPA2350UA | Higher noise (7nV/√Hz), lower GBW (38MHz), SO-8 package, rail-to-rail I/O | Cost-optimized alternative for non-critical signal chains with relaxed bandwidth/noise needs | Select when board space allows SO-8 and 100MHz bandwidth is unnecessary |
Compared with ADA4897-2ARMZ and OPA2350UA, the LT6203IDD#TRPBF uniquely balances ultralow noise, 100MHz bandwidth, and sub-3mA quiescent current in a thermally efficient DFN-8 - making it optimal for space- and power-constrained industrial signal chains requiring precision and speed.
Availability
LT6203IDD#TRPBF is available at Aetrix Electronics and suitable for DSL receivers, A/D converter drivers, and battery-powered instrumentation requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature grading.
Supply support for LT6203IDD#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 full product continuity, technical documentation, and manufacturing control for the LT620x family.
The LT6203 series belongs to Linear's precision, low-noise op amp product line - engineered specifically for high-fidelity signal conditioning in power-sensitive, bandwidth-critical applications such as communications infrastructure and portable test equipment.
FAQ
What is the maximum supply voltage rating for the LT6203IDD#TRPBF?
The LT6203IDD#TRPBF has an absolute maximum total supply voltage (V+ to V–) of 12.6V. It operates reliably across a recommended supply range of 2.5V to 12.6V, with full specifications guaranteed at 3V, 5V, and ±5V. Exceeding 12.6V risks permanent damage per Absolute Maximum Ratings.
Does the LT6203IDD#TRPBF support rail-to-rail input common-mode voltage?
Yes, the LT6203IDD#TRPBF supports rail-to-rail input common-mode voltage - its input stage operates with VCM extending from V– to V+, enabling true single-supply operation without external bias networks. This is confirmed in the "Input Common Mode Range Includes Both Rails" feature and validated across all supply voltages in the Electrical Characteristics table.
What is the thermal resistance (θJA) of the LT6203IDD#TRPBF DFN package?
Per the manufacturer's Pin Configuration section, the LT6203IDD#TRPBF in its 8-lead (3mm × 3mm) plastic DFN package has a junction-to-ambient thermal resistance (θJA) of 43°C/W. This value assumes standard PCB layout with the exposed metal pad soldered to a thermal plane - critical for sustaining 2.5mA per amplifier at elevated ambient temperatures.
Can the LT6203IDD#TRPBF drive a 100Ω load directly?
Yes, the LT6203IDD#TRPBF can drive a 100Ω load directly: its output delivers ≥30mA minimum short-circuit current and maintains rail-to-rail swing even at 20mA sink/source (e.g., 35mV from rail at 15mA). At 100Ω, a 3V output swing requires only 30mA - well within its specified capability and verified in the VOL/VOH electrical characteristics.
Is the LT6203IDD#TRPBF pin-compatible with other LT6203 variants?
Yes, the LT6203IDD#TRPBF shares identical pinout with all LT6203 variants in DFN-8 (e.g., LT6203CDD#TRPBF, LT6203HDD#TRPBF), MSOP-8, and SO-8 packages - as confirmed by the standardized "LT6203" pin configuration diagrams. However, temperature grade (I-grade = –40°C to 85°C) and package thermal performance differ, so thermal design must be revalidated for each variant.
LT6203IDD#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 25V/µs
- Gain Bandwidth Product:
- 100 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3.8 µA
- Voltage - Input Offset:
- 2.6 mV
- Current - Supply:
- 2.8mA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LT6203IDD#TRPBF FAQ
1.How can I place an order for LT6203IDD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6203IDD#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 LT6203IDD#TRPBF reliable?
The price and inventory of LT6203IDD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6203IDD#TRPBF is usually 5 days.
3.What payment methods are accepted for LT6203IDD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6203IDD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6203IDD#TRPBF?
LT6203IDD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6203IDD#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 LT6203IDD#TRPBF?
For technical support, including LT6203IDD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6203IDD#TRPBF requirements.
6.How does Aetrix verify that LT6203IDD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT6203IDD#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 LT6203IDD#TRPBF meets industry standards.
7.What is the process for return or replacement of LT6203IDD#TRPBF?
All LT6203IDD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6203IDD#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 LT6203IDD#TRPBF part is unused and in its original packaging.
Return procedure for LT6203IDD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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