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Analog Devices Inc. LT6201CDD#PBF
- Part No.:
- LT6201CDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT6201CDD#PBF.pdf
- Description:
- IC BUFFER 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:191
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Product details
Overview
LT6201CDD#PBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail input/output, ultralow-noise operational amplifier in an 8-lead 3mm × 3mm DFN package. It delivers 0.95nV/√Hz input voltage noise at 100kHz, 165MHz gain bandwidth at unity gain, 50V/µs slew rate, and operates from 2.5V to 7V supply - optimized for low-voltage, high-fidelity signal conditioning in photodiode amplifiers and ADC drivers.
For engineers reviewing the LT6201CDD#PBF datasheet, LT6201CDD#PBF pinout, LT6201CDD#PBF application, or LT6201CDD#PBF equivalent, key selection criteria include its dual-channel DFN footprint, shutdown functionality, rail-to-rail swing capability, and verified 165MHz GBW performance at AV = 1 under ±2.5V to ±3.5V supplies.
Technical Context
The LT6201CDD#PBF implements a complementary bipolar input stage enabling rail-to-rail common-mode input range and output swing. Its internal architecture supports unity-gain stability while maintaining low distortion (–80dB HD2/HD3 at 1MHz, RL = 100Ω) and thermal shutdown protection.
It features independent shutdown control per channel via the SHDN pin (pin 5), reducing supply current to ≤1.8mA per amplifier when asserted low. The DFN package's underside metal pad is connected to V–, requiring proper PCB thermal vias for junction temperature management up to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Noise Voltage Density | 0.95nV/√Hz at 100kHz - enables sub-1µV RMS noise in wideband transimpedance stages |
| Gain Bandwidth Product | 165MHz at AV = 1 - supports stable unity-gain buffering of signals up to ~100MHz |
| Slew Rate | 50V/µs - ensures <165ns settling to 0.1% for 2V step with 1kΩ load |
| Input Common-Mode Range | Includes both rails (V– to V+) - allows direct interfacing with sensors operating at ground or supply rail |
| Output Swing | Rail-to-rail (≤170mV from rails at 20mA sink/source) - maximizes dynamic range in 3V systems |
| Supply Range | 2.5V to 7V total (±2.5V to ±3.5V) - compatible with low-voltage industrial and portable designs |
| Shutdown Current | ≤1.8mA per amplifier - reduces system standby power by >90% vs active mode (22mA) |
Pinout & Package
LT6201CDD#PBF uses an 8-lead (3mm × 3mm) plastic DFN package with exposed metal pad connected to V–. Thermal resistance θJA = 160°C/W (with recommended PCB copper).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT A | Amplifier A output | Capable of sourcing/sinking ≥60mA; rail-to-rail swing with <170mV headroom at 20mA |
| 2: –IN A | Inverting input A | High-impedance node (0.57MΩ common-mode); accepts signals from V– to V+ |
| 3: +IN A | Non-inverting input A | Matches –IN A offset and bias current; used for unity-gain follower or differential sensing |
| 4: V– | Negative supply / GND reference | Connects to exposed underside metal pad; must be tied to low-impedance ground plane |
| 5: SHDN | Channel shutdown control | Active-low logic input; pulls supply current per amp to ≤1.8mA when ≤0.3V |
| 6: OUT B | Amplifier B output | Electrically identical to OUT A; enables dual-path signal processing in compact layout |
| 7: –IN B | Inverting input B | Matched to –IN A (offset match ≤0.4mV, CMRR match ≤105dB) |
| 8: +IN B | Non-inverting input B | Provides second independent high-precision input path with same specs as Channel A |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full utilization of 3V supply range without level-shifting circuitry |
| Ultralow 0.95nV/√Hz noise | Preserves SNR in front-end amplification of weak signals (e.g., photodiode, strain gauge) |
| Dual-channel DFN (3mm × 3mm) | Reduces board area by >50% vs SO-8 while maintaining thermal performance |
| Independent shutdown per channel | Allows dynamic power gating of unused amplifier - critical for battery-powered instrumentation |
| Unity-gain stable | Eliminates need for external compensation in buffer, gain-of-one, or active filter configurations |
Applications
| Transimpedance Amplifier | Low Noise Signal Processing |
|---|---|
Use Scenario: Converting picoamp-level photocurrent from silicon photodiodes into measurable voltage with minimal added noise. IC Role / Device Role: Primary transimpedance amplifier with feedback resistor and capacitor compensation. Use Value: 0.95nV/√Hz noise density and rail-to-rail output enable >100dB dynamic range in 100kHz-bandwidth optical receivers. | Use Scenario: Pre-amplifying low-amplitude sensor outputs (e.g., piezoelectric accelerometers, MEMS microphones) before ADC sampling. IC Role / Device Role: High-fidelity, low-distortion gain stage with DC-coupled input and output. Use Value: –80dB THD+N at 1MHz and 165MHz GBW support clean amplification of broadband analog signals up to 50MHz. |
| Rail-to-Rail Buffer Amplifier | Driving A/D Converters |
Use Scenario: Isolating high-impedance DAC outputs or reference voltages from variable downstream loads. IC Role / Device Role: Unity-gain voltage follower with minimal loading and maximal output drive. Use Value: 60mA output current and rail-to-rail swing ensure stable 3V reference buffering into 50Ω loads or switched-capacitor inputs. | Use Scenario: Driving the input of high-speed SAR or pipeline ADCs requiring fast settling and low source impedance. IC Role / Device Role: Track-and-hold driver with sufficient slew rate and bandwidth to settle within ADC aperture time. Use Value: 50V/µs slew rate and 165MHz GBW achieve <165ns 0.1% settling for 2V steps - compatible with 5MSPS+ ADCs. |
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 |
|---|---|---|---|
| ADA4898-2ARMZ | Higher noise (1.1nV/√Hz), higher supply current (18mA), wider supply range (±5V to ±12V) | Better suited for ±5V systems requiring >200MHz GBW; less optimal for 3V battery operation | Select if higher supply voltage headroom or higher output drive (>100mA) is required |
| OPA211IDGKT | Lower noise (1.1nV/√Hz), lower GBW (45MHz), no shutdown pin, SO-8 only | Lacks power gating; better for cost-sensitive, non-portable applications where 45MHz bandwidth suffices | Select if shutdown functionality and >100MHz bandwidth are not required and SO-8 is preferred |
Compared with ADA4898-2ARMZ and OPA211IDGKT, the LT6201CDD#PBF uniquely combines 0.95nV/√Hz noise, 165MHz GBW, rail-to-rail I/O, and per-channel shutdown in a space-constrained DFN - making it optimal for portable, low-voltage, high-bandwidth precision signal chains.
Availability
LT6201CDD#PBF is available at Aetrix Electronics and suitable for photodiode amplification, high-speed data acquisition, and portable medical instrumentation requiring stable component supply across commercial temperature range (0°C to 70°C).
Supply support for LT6201CDD#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 acquired Linear Technology in 2017 and maintains its precision analog portfolio, including high-performance op amps engineered for signal integrity, low noise, and robust operation.
The LT6200/LT6201 family was designed specifically for low-voltage, high-fidelity signal conditioning - targeting applications demanding ultralow noise, rail-to-rail swing, and unity-gain stability without external compensation.
FAQ
What is the maximum supply voltage for LT6201CDD#PBF?
The absolute maximum total supply voltage for LT6201CDD#PBF is 7V, as specified in the Absolute Maximum Ratings table. This limit applies due to the DFN package's thermal constraints - exceeding 7V risks junction temperature violation even with adequate PCB copper. Operation above ±3.5V (7V total) is not supported, unlike SO-8 variants rated to 12.6V.
Does LT6201CDD#PBF support rail-to-rail input and output simultaneously?
Yes, LT6201CDD#PBF supports rail-to-rail input common-mode range (V– to V+) and rail-to-rail output swing (within 170mV of either rail at 20mA load). This allows full-swing operation in single-supply 3V systems - for example, amplifying a 0–3V sensor output to drive a 0–3V ADC input without level shifting.
What is the typical noise performance of LT6201CDD#PBF at 10kHz?
The typical input voltage noise density of LT6201CDD#PBF is 1.4nV/√Hz at 10kHz (per Electrical Characteristics table, VS = 5V). This is higher than its 0.95nV/√Hz value at 100kHz due to 1/f noise contribution - critical for DC-coupled, low-frequency precision applications where integrated noise dominates.
How does the shutdown function operate on LT6201CDD#PBF?
The SHDN pin (pin 5) on LT6201CDD#PBF is active-low: asserting ≤0.3V disables both amplifiers, reducing total supply current to ≤3.6mA (1.8mA per channel). Release to ≥V+–0.5V restores operation with 180ns turn-on time. Each channel shares the same SHDN signal - independent per-channel shutdown is not supported.
Is LT6201CDD#PBF pin-compatible with other LT6201 variants?
No - LT6201CDD#PBF (DFN) is not pin-compatible with LT6201CS8#PBF (SO-8). While both share identical electrical specifications and functional pin assignments, the DFN package has different physical pin numbering and layout. The SO-8 variant uses standard dual-op-amp pinout (pins 1/7 = outputs, 2/6 = –IN, 3/5 = +IN, 4 = V–, 8 = V+), whereas the DFN places V– on pin 4 and SHDN on pin 5.
LT6201CDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Buffer
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 50V/µs
- Gain Bandwidth Product:
- 165 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 8 µA
- Voltage - Input Offset:
- 2.5 mV
- Current - Supply:
- 20mA (x2 Channels)
- Current - Output / Channel:
- 90 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LT6201CDD#PBF FAQ
1.How can I place an order for LT6201CDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6201CDD#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 LT6201CDD#PBF reliable?
The price and inventory of LT6201CDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6201CDD#PBF is usually 5 days.
3.What payment methods are accepted for LT6201CDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6201CDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6201CDD#PBF?
LT6201CDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6201CDD#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 LT6201CDD#PBF?
For technical support, including LT6201CDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6201CDD#PBF requirements.
6.How does Aetrix verify that LT6201CDD#PBF is sourced from the original manufacturer or authorized distributors?
All LT6201CDD#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 LT6201CDD#PBF meets industry standards.
7.What is the process for return or replacement of LT6201CDD#PBF?
All LT6201CDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6201CDD#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 LT6201CDD#PBF part is unused and in its original packaging.
Return procedure for LT6201CDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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