My Inquiry
My Account
Analog Devices Inc. LTC6244HDD#PBF
- Part No.:
- LTC6244HDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6244HDD#PBF.pdf
- Description:
- IC CMOS 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,782
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC6244HDD#PBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail output, unity-gain stable CMOS operational amplifier optimized for low-noise, high-speed signal conditioning in photodiode and transducer interfaces. It delivers 50MHz gain bandwidth, 40V/μs slew rate, 1pA input bias current, 1.5μVP-P 0.1Hz–10Hz noise, and operates from 2.8V to 6V single supply or ±5.25V dual supply - enabling precision amplification in compact, low-voltage medical and instrumentation systems.
For engineers reviewing the LTC6244HDD#PBF datasheet, LTC6244HDD#PBF pinout, LTC6244HDD#PBF application, or LTC6244HDD#PBF equivalent, this page provides verified package mapping (8-lead 3mm × 3mm DFN), temperature-rated performance (–40°C to 125°C), channel-matched DC specs, and real-world design context for photodiode, charge-coupled, and high-impedance sensor front-ends.
Technical Context
The LTC6244HDD#PBF employs a folded-cascode input stage with laser-trimmed MOSFETs to achieve ultra-low input bias current and sub-100μV offset voltage across its full operating temperature range. Its rail-to-rail output stage uses complementary NMOS/PMOS drivers to swing within 35mV of either supply rail under 5mA load, maximizing dynamic range in low-voltage applications.
Designed for unity-gain stability with minimal external compensation, it features a 2.1pF differential input capacitance and 1012Ω common-mode input resistance - critical for preserving bandwidth and SNR in high-Z sensor interfaces. The device is fully specified at –40°C to 125°C (H-grade), with guaranteed 50MHz GBW and 40V/μs slew rate at 5V supply and 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 50MHz - enables stable closed-loop operation up to 5MHz at gain ≥10 without phase margin degradation. |
| Slew Rate | 40V/μs - supports clean 3VP-P output at ≥3.7MHz full-power bandwidth into 1kΩ load. |
| Input Bias Current | 1pA (typ, 25°C) - minimizes voltage error in >1GΩ source impedances (e.g., photodiodes, piezoelectrics). |
| 0.1Hz–10Hz Noise | 1.5μVP-P - ensures <10μV total integrated noise in DC–10Hz EEG or strain gauge applications. |
| Input Offset Voltage | 100μV max (–40°C to 125°C) - maintains ≤0.5% gain error in 100mV full-scale transducer outputs. |
| Rail-to-Rail Output Swing | Within 35mV of V+ and V– at 5mA - preserves >98% of 3V supply headroom for ADC input scaling. |
| Supply Range | 2.8V to 6V single or ±5.25V dual - compatible with Li-ion, USB, and industrial 5V rails without level-shifting. |
Pinout & Package
Package: 8-lead (3mm × 3mm) plastic DFN with exposed pad connected to V– (pin 9, optional PCB connection). Thermal resistance θJA = 43°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT A | Amplifier A output | Drives loads down to 1kΩ while maintaining rail-to-rail swing and 50MHz bandwidth. |
| 2: –IN A | Inverting input A | Differential node with 2.1pF capacitance; requires matched trace length to +IN A for optimal CMRR. |
| 3: +IN A | Non-inverting input A | High-impedance node (1012Ω); connects directly to photodiode cathode or sensor output. |
| 4: V– | Negative supply / ground reference | Reference for both amplifiers; exposed pad must be soldered for thermal performance. |
| 5: V+ | Positive supply | Accepts 2.8V–6V single or +5.25V dual supply; PSRR >75dB up to 100kHz. |
| 6: OUT B | Amplifier B output | Independent output; shares same supply pins but has <1.1mV channel-to-channel VOS match. |
| 7: –IN B | Inverting input B | Matched to –IN A for differential pair configurations; CMRR match ≥72dB. |
| 8: +IN B | Non-inverting input B | Enables dual-channel synchronous acquisition (e.g., differential photodiode pairs). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 1pA typ enables direct connection to photodiodes with >100pF junction capacitance without signal loss. |
| Low 1/f noise floor | 1.5μVP-P (0.1Hz–10Hz) supports precision DC-coupled measurements in medical biosensors. |
| Rail-to-rail output drive | Swings to within 35mV of rails at 5mA - eliminates need for external level-shifting before 12-bit+ ADCs. |
| Wide temperature specification | Guaranteed performance from –40°C to 125°C - suitable for automotive engine control and industrial motor drives. |
| Low input capacitance | 2.1pF differential capacitance preserves bandwidth in transimpedance amplifiers with >10MΩ feedback resistors. |
| Unity-gain stable | No external compensation required - simplifies layout and reduces component count in fast-settling circuits. |
Applications
| Photodiode Amplifier | Charge-Coupled Amplifier |
|---|---|
|
Use Scenario: Amplifying weak current from Hamamatsu S1227-1010BQ large-area photodiode (CPD = 3000pF) in optical smoke detection. IC Role / Device Role: Transimpedance amplifier with 1MΩ feedback resistor, configured as inverting op-amp. Use Value: 1pA input bias current prevents dark-current error; 50MHz GBW supports 350kHz signal bandwidth per LTC6244 TA01a. |
Use Scenario: Buffering and gain-setting for CCD output in portable spectroscopy equipment. IC Role / Device Role: Dual-channel follower/gain stage driving multiplexed ADC inputs. Use Value: Matched VOS (≤1.1mV) and CMRR (≥72dB) ensure <0.01% inter-channel gain error across 12-bit dynamic range. |
| Medical Instrumentation | High-Impedance Transducer Amplifier |
|
Use Scenario: Front-end amplification for dry-electrode EEG sensors with >10GΩ skin contact impedance. IC Role / Device Role: Non-inverting DC-coupled amplifier with gain = 100, driven by passive RC filter. Use Value: 2.1pF input capacitance avoids resonance with 10GΩ source; 1.5μVP-P noise ensures <5μV total input-referred noise in 0.5–100Hz band. |
Use Scenario: Signal conditioning for piezoresistive pressure sensors in HVAC differential-pressure monitoring. IC Role / Device Role: Instrumentation amplifier input buffer (dual configuration) rejecting common-mode EMI. Use Value: Rail-to-rail output swing maximizes utilization of 3.3V ADC reference; 100μV VOS max limits zero-point drift to <0.1% FS over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual, low-noise, rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4898-2ARMZ | Higher 1kHz noise (0.9nV/√Hz vs 8–12nV/√Hz), 200MHz GBW, ±15V supply capable, but 2.5μA IB. | Better for wideband AC-coupled video or RF IF stages; unsuitable for >1MΩ DC-coupled sources. | Select when bandwidth >100MHz is required and source impedance <10kΩ; avoid for photodiode or pH sensor use. |
| OPA2189IDR | Zero-drift architecture, 0.1μV/°C drift, 5.2nV/√Hz noise, 12MHz GBW, but 200pA IB and no rail-to-rail output. | Superior DC accuracy for precision weigh scales or thermocouple amps; limited dynamic range at low supply voltages. | Select for sub-μV offset stability over time/temperature where 12MHz bandwidth suffices; not for high-speed photodiode apps. |
Compared with ADA4898-2ARMZ and OPA2189IDR, the LTC6244HDD#PBF uniquely balances 1pA bias current, 50MHz bandwidth, rail-to-rail output, and –40°C to 125°C operation - making it the only option among the three qualified for simultaneous high-Z DC sensing and MHz-range signal fidelity in harsh environments.
Availability
LTC6244HDD#PBF is available at Aetrix Electronics and suitable for medical instrumentation, industrial sensor interfaces, and optical detection systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC6244HDD#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, serving industrial, automotive, communications, and healthcare markets.
The LTC6244HDD#PBF belongs to ADI's legacy Linear Technology precision op amp portfolio, engineered specifically for low-noise, high-speed, high-impedance signal acquisition in demanding instrumentation and sensing applications.
FAQ
What is the maximum operating temperature for the LTC6244HDD#PBF?
The LTC6244HDD#PBF is rated for continuous operation from –40°C to +125°C ambient temperature, with full electrical specifications guaranteed across this range. Its junction temperature limit is 150°C, and thermal resistance θJA is 43°C/W in the 3mm × 3mm DFN package - requiring appropriate PCB copper area for heatsinking at high power dissipation.
Does the LTC6244HDD#PBF support true rail-to-rail input common-mode range?
No - the LTC6244HDD#PBF features rail-to-rail *output* swing but only extends its input common-mode range to the negative supply rail (V–). The positive common-mode limit is V+ – 1.5V at 25°C, or V+ – 1.0V over temperature. For full rail-to-rail input capability, consider the LTC6228 or LTC6255 families instead.
Can the LTC6244HDD#PBF drive capacitive loads without oscillation?
The LTC6244HDD#PBF is unity-gain stable but exhibits increasing overshoot with capacitive loads >100pF. Data sheet Figure 30–32 show 10–40% overshoot at 100–1000pF with series resistance (RS = 10Ω or 50Ω). For loads >100pF, add a 10–50Ω isolation resistor in series with the output, or use the internal compensation pin if available in pin-compatible variants.
What is the typical supply current per amplifier for the LTC6244HDD#PBF at 5V?
At VS = 5V and TA = 25°C, the LTC6244HDD#PBF draws 6.25mA to 7.4mA per amplifier (12.5–14.8mA total), depending on output loading and temperature. At 125°C, supply current increases to ~8.8mA per amplifier. This quiescent current enables high-speed operation while remaining compatible with battery-powered portable instruments.
How does the LTC6244HDD#PBF compare to the LTC6244HV variant?
The LTC6244HDD#PBF is the standard-voltage version (2.8V–6V single or ±5.25V dual), while LTC6244HV variants support up to ±5.25V (10.5V total) supplies. The H-grade (HDD) and HV-grade (HVHDD) share identical –40°C to 125°C rating, but HV versions guarantee operation at higher supply voltages and exhibit slightly higher input offset voltage (100–1050μV vs 100–950μV) and supply current (9.3mA vs 7.4mA).
LTC6244HDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 35V/µs
- Gain Bandwidth Product:
- 50 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 6.25mA (x2 Channels)
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 2.8 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LTC6244HDD#PBF FAQ
1.How can I place an order for LTC6244HDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6244HDD#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 LTC6244HDD#PBF reliable?
The price and inventory of LTC6244HDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6244HDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC6244HDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6244HDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6244HDD#PBF?
LTC6244HDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6244HDD#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 LTC6244HDD#PBF?
For technical support, including LTC6244HDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6244HDD#PBF requirements.
6.How does Aetrix verify that LTC6244HDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6244HDD#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 LTC6244HDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC6244HDD#PBF?
All LTC6244HDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6244HDD#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 LTC6244HDD#PBF part is unused and in its original packaging.
Return procedure for LTC6244HDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC6244HDD#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…
