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Analog Devices Inc. LT6020IDD#PBF
- Part No.:
- LT6020IDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT6020IDD#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:266
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Product details
Overview
LT6020IDD#PBF from Analog Devices (formerly Linear Technology) is a dual micropower precision rail-to-rail output operational amplifier in an 8-lead 3mm × 3mm DFN package. It delivers 5V/µs slew rate, 30µV max input offset voltage, 100µA/amplifier supply current, and operates from 3V to 30V supplies. It is optimized for multiplexed ADC front-ends and low-power portable instrumentation where fast settling and precision coexist.
For engineers reviewing the LT6020IDD#PBF datasheet, LT6020IDD#PBF pinout, LT6020IDD#PBF application, or LT6020IDD#PBF equivalent, key selection criteria include its 0.0015% settling time on 5V steps (13.8µs), high dynamic input impedance during large input transients, no output phase inversion, and guaranteed rail-to-rail output swing at ±14.5V with 100kΩ load.
Technical Context
The LT6020IDD#PBF uses a proprietary bipolar input stage combining NPN and PNP differential pairs to maintain high input impedance (17GΩ common-mode) even during 5V input voltage steps-eliminating back-to-back diode conduction seen in standard bipolar op amps. Its enhanced slew rate arises from adaptive biasing that scales with input step size without degrading DC precision.
This architecture enables stable operation in unity-gain configurations driving up to 100pF capacitive loads, supports wide supply range (3V–30V), and guarantees no phase inversion across the full specified common-mode input range (V– +1.2V to V+ –1.4V) and temperature range (–40°C to 85°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 5V/µs (10V step, AV=1); enables 13.8µs 0.0015% settling for precision data acquisition |
| Input Offset Voltage | Max 30µV (MS8 package, –40°C to 85°C); ensures <1 LSB error in 18-bit DAC buffer applications |
| Supply Current | 100µA per amplifier (max, –40°C to 85°C); supports battery-powered sensor nodes with multi-year runtime |
| Gain-Bandwidth Product | 400kHz; sufficient for anti-aliasing and post-DAC filtering up to ~100kHz signals |
| Output Swing | Rail-to-rail: within 100mV of rails (V– and V+) at 10kΩ load; maximizes dynamic range in single-supply systems |
| Input Offset Drift | ±0.2µV/°C (max, MS8); contributes <2µV drift over 10°C ambient change-critical for uncalibrated industrial sensors |
| Common-Mode Range | V– +1.2V to V+ –1.4V; allows inverting configurations with inputs outside supply rails (e.g., ±13.5V swing) |
Pinout & Package
LT6020IDD#PBF is housed in an 8-lead (3mm × 3mm) plastic DFN package with exposed thermal pad connected to V– (Pin 4). Pin 1 identifier is marked on top surface; PCB connection of exposed pad is optional but recommended for thermal performance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output; rail-to-rail capable, drives 100kΩ min load |
| 2 | –IN A | Inverting input of Amplifier A; high-impedance node (17GΩ), sensitive to layout-induced leakage |
| 3 | +IN A | Noninverting input of Amplifier A; same impedance and transient response as –IN A |
| 4 | V– | Negative supply rail; must be bypassed with ≥0.1µF ceramic capacitor to ground |
| 5 | V+ | Positive supply rail; bypassed identically to V–; supports 3V–30V total supply range |
| 6 | OUT B | Amplifier B output; electrically identical to OUT A; enables dual-channel signal conditioning |
| 7 | –IN B | Inverting input of Amplifier B; independent of Amplifier A; shares same input stage topology |
| 8 | +IN B | Noninverting input of Amplifier B; fully matched to +IN A for common-mode rejection |
Key Features
| Feature | Design Value |
|---|---|
| High Dynamic Input Impedance | Maintains >10GΩ input impedance during 5V input transients-prevents multiplexer channel crosstalk and settling delays |
| No Output Phase Inversion | Guaranteed non-inverting behavior even when inputs exceed common-mode range-enables robust comparator-like monitoring without latch-up risk |
| Fast 0.0015% Settling | 13.8µs for 5V step (AV=1); eliminates need for external settling-time compensation in MUX-ADC systems |
| Low Long-Term Drift | ±0.2µV/month offset stability; reduces calibration frequency in medical and test equipment |
| Rail-to-Rail Output Drive | Swings within 100mV of V– and V+ at 10kΩ; preserves full-scale resolution in 16-bit DAC output stages |
Applications
| Instrumentation Amplifier Front-End | Multiplexed Precision ADC Driver |
|---|---|
Use Scenario: Low-noise amplification of thermocouple or strain gauge signals in portable data loggers with limited battery capacity. IC Role / Device Role / Timing Role: Dual-channel precision gain stage buffering sensor outputs before digitization; second amplifier used for reference buffering or active filtering. Use Value: 30µV max offset and 0.2µV/°C drift ensure <0.01% measurement accuracy over temperature without recalibration; 100µA supply current extends battery life beyond 5 years in sleep-wake cycles. | Use Scenario: Driving successive approximation register (SAR) ADC inputs in 16-bit industrial PLC analog input modules with 16-channel multiplexing. IC Role / Device Role / Timing Role: Post-mux buffer that settles to 0.0015% in 13.8µs after each channel switch-matching typical 100kSPS ADC acquisition timing. Use Value: High dynamic input impedance prevents charge injection errors from mux switching; rail-to-rail output ensures full ADC code utilization across 0–5V and ±10V input ranges. |
| Low-Power Wireless Sensor Node | 18-Bit DAC Output Amplifier |
Use Scenario: Signal conditioning in IEEE 802.15.4 mesh network nodes powered by coin-cell batteries, requiring µA-level quiescent current. IC Role / Device Role / Timing Role: Dual op amp providing sensor gain and reference voltage buffering; one channel disabled during sleep to reduce system leakage. Use Value: 100µA per amplifier enables sub-200µA total analog subsystem current; fast wake-up settling (<15µs) allows rapid sampling bursts without sacrificing power efficiency. | Use Scenario: Buffering the output of LTC2642 16-bit DAC in automated test equipment requiring ±10V output swing and minimal code-dependent gain error. IC Role / Device Role / Timing Role: Precision unity-gain buffer isolating DAC output from load variations; second amplifier used for active I/V conversion or offset trimming. Use Value: 30µV offset contributes <0.5mV absolute error at ±10V full scale-well below 1 LSB (≈153µV) for 16-bit resolution; rail-to-rail swing achieves true ±10V compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision rail-to-rail output amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture; 0.02µV/°C drift vs LT6020IDD#PBF's 0.2µV/°C; 350kHz GBW vs 400kHz; 17µA supply current vs 100µA | Better long-term stability for ultra-low-drift systems; lower power but slower settling (24µs to 0.01%) | Select OPA2333AIDR when drift-critical calibration intervals exceed 1 year; avoid if 5V/µs slew or <15µs settling is required. |
| AD8605ARMZ | FET-input; 1pA bias current vs 3nA; 10MHz GBW vs 400kHz; 1mA supply current vs 100µA; no shutdown mode | Superior high-impedance source interfacing; higher speed but 10× higher power consumption | Select AD8605ARMZ for photodiode or high-Z sensor interfaces; avoid in battery-powered systems where <200µA total analog current is mandatory. |
Compared with OPA2333AIDR and AD8605ARMZ, the LT6020IDD#PBF uniquely balances micropower operation (100µA), precision (30µV offset), and speed (5V/µs, 13.8µs settling), making it optimal for multiplexed data acquisition where all three parameters constrain design simultaneously.
Availability
LT6020IDD#PBF is available at Aetrix Electronics and suitable for precision signal processing, multiplexed ADC driver, and low-power portable instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT6020IDD#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 legacy of high-performance analog ICs for precision, power, and signal integrity applications.
The LT6020 product line was designed specifically for low-power, high-precision signal conditioning in space-constrained, battery-operated, and multiplexed measurement systems-emphasizing slew rate/power ratio without sacrificing DC accuracy.
FAQ
What is the maximum operating temperature range for the LT6020IDD#PBF?
The LT6020IDD#PBF is rated for operation from –40°C to +85°C. This I-grade temperature range is confirmed in the Order Information table of the datasheet and applies specifically to the DD-package variants marked "IDD". The part's electrical specifications-including 30µV max offset voltage and 100µA max supply current-are guaranteed across this full range.
Does the LT6020IDD#PBF include a shutdown feature?
No, the LT6020IDD#PBF does not include a shutdown feature. Shutdown functionality is exclusive to the LT6020-1 variant (e.g., LT6020IDD-1#PBF), which adds EN and DGND pins. The LT6020IDD#PBF is the base dual-amplifier version without enable control; its supply current remains at 100µA per amplifier under all operating conditions.
What is the input common-mode voltage range of the LT6020IDD#PBF?
The LT6020IDD#PBF has a specified input common-mode voltage range of V– +1.2V to V+ –1.4V. This range is explicitly defined in the Electrical Characteristics table and enables use in inverting configurations where input signals swing beyond the supply rails-for example, ±13.5V input with ±15V supplies-as verified in Figure 3 of the datasheet.
Can the LT6020IDD#PBF drive capacitive loads, and if so, how much?
Yes, the LT6020IDD#PBF can drive up to 100pF capacitive loads in unity-gain configuration, as stated in the Applications Information section. For larger loads or higher gains, adding a small series resistor (e.g., 10–50Ω) between the output and load improves stability. Performance degrades beyond 100pF in AV=1 without compensation, risking overshoot or ringing.
Is the LT6020IDD#PBF pin-compatible with other packages of the LT6020 family?
No, the LT6020IDD#PBF (8-lead DFN) is not pin-compatible with the 10-lead DFN LT6020-1 variants or the 8-lead MSOP versions. Pin counts and functions differ: the LT6020-1 adds EN and DGND pins, while the MS8 package retains the same 8-pin function mapping but with different physical layout and thermal characteristics (θJA = 163°C/W vs 43°C/W for DFN). PCB layout must match the specific package.
LT6020IDD#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:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 400 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 pA
- Voltage - Input Offset:
- 20 µV
- Current - Supply:
- 90µA (x2 Channels)
- Current - Output / Channel:
- 11 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LT6020IDD#PBF FAQ
1.How can I place an order for LT6020IDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT6020IDD#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 LT6020IDD#PBF reliable?
The price and inventory of LT6020IDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT6020IDD#PBF is usually 5 days.
3.What payment methods are accepted for LT6020IDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT6020IDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT6020IDD#PBF?
LT6020IDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT6020IDD#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 LT6020IDD#PBF?
For technical support, including LT6020IDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT6020IDD#PBF requirements.
6.How does Aetrix verify that LT6020IDD#PBF is sourced from the original manufacturer or authorized distributors?
All LT6020IDD#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 LT6020IDD#PBF meets industry standards.
7.What is the process for return or replacement of LT6020IDD#PBF?
All LT6020IDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT6020IDD#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 LT6020IDD#PBF part is unused and in its original packaging.
Return procedure for LT6020IDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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