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Analog Devices Inc. LTC6244HVCDD#PBF
- Part No.:
- LTC6244HVCDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6244HVCDD#PBF.pdf
- Description:
- IC CMOS 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,207
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Product details
Overview
LTC6244HVCDD#PBF from Analog Devices (formerly Linear Technology) is a dual, high-speed, rail-to-rail output CMOS operational amplifier optimized for low-noise, high-precision 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 ±5V supplies with guaranteed performance over 0°C to 70°C.
For engineers reviewing the LTC6244HVCDD#PBF datasheet, LTC6244HVCDD#PBF pinout, LTC6244HVCDD#PBF application, or LTC6244HVCDD#PBF equivalent, key selection criteria include its HV-rated supply range (±5V), DFN-8 package footprint, ultra-low input current for high-Z sensors, and verified rail-to-rail output swing within 35mV of rails under load.
Technical Context
The LTC6244HVCDD#PBF employs a CMOS input stage with laser-trimmed offset and folded-cascode architecture enabling rail-to-rail output swing and extended input common-mode range down to V–. Its internal compensation ensures unity-gain stability while maintaining 50MHz bandwidth and low 1/f noise.
Designed for high-impedance sensor front-ends, it features matched channel characteristics (e.g., ≤1.1mV VOS match), low input capacitance (2.1pF common-mode), and robust ESD protection (4kV HBM). The HV variant supports ±5V operation with full specification across temperature and load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 50MHz - enables stable closed-loop operation up to 5MHz at G = +10 without phase margin degradation. |
| Slew Rate | 40V/μs - supports clean 3VP-P output at ≥3.7MHz full-power bandwidth into 1kΩ. |
| Input Bias Current | 1pA (typ @ 25°C) - preserves signal integrity in >1GΩ source impedance applications like photodiode amps. |
| 0.1Hz–10Hz Noise | 1.5μVP-P - minimizes drift-induced error in DC-coupled, low-frequency instrumentation. |
| Output Swing | Within 35mV of rails (ISINK/ISOURCE = 1mA) - maximizes dynamic range in low-voltage or bipolar supply systems. |
| Supply Range | ±5V (HV version) - allows direct interface with ±5V analog signal chains without level-shifting. |
| Input Capacitance | 2.1pF (common-mode) - reduces peaking and instability when driving capacitive loads or long traces. |
Pinout & Package
Package: 8-lead (3mm × 3mm) plastic DFN (LCGD), exposed pad connected to V– (PCB connection optional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT A | Amplifier A output | Delivers rail-to-rail voltage with <35mV headroom; drives 10mA short-circuit current. |
| 2: –IN A | Inverting input A | High-impedance CMOS node; 2.1pF input capacitance affects stability with capacitive sources. |
| 3: +IN A | Non-inverting input A | Accepts common-mode voltage from V– to (V+ – 1.5V); laser-trimmed for low offset. |
| 4: V– | Negative supply rail | Reference for exposed thermal pad; must be low-impedance for optimal PSRR and thermal performance. |
| 5: V+ | Positive supply rail | Supports ±5V operation; PSRR >75dB up to 100kHz ensures immunity to supply noise. |
| 6: OUT B | Amplifier B output | Matched performance to OUT A; channel-to-channel VOS match ≤1.1mV improves differential accuracy. |
| 7: –IN B | Inverting input B | Electrically identical to –IN A; enables dual-channel synchronous signal processing. |
| 8: +IN B | Non-inverting input B | Independent high-Z input; supports separate sensor inputs or feedback paths per channel. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Enables maximum signal utilization in ±5V systems-output reaches within 35mV of either rail at 1mA load. |
| Ultra-low input bias current | 1pA typical preserves gain accuracy and linearity in photodiode, piezoelectric, and pH sensor interfaces. |
| Low 0.1Hz–10Hz noise | 1.5μVP-P eliminates baseline wander in precision DC measurements without chopper artifacts. |
| Laser-trimmed input offset | 100μV max (0°C to 70°C) ensures minimal DC error in closed-loop transimpedance configurations. |
| High CMRR & PSRR matching | ≥78dB CMRR and ≥73dB PSRR match between channels enable accurate differential signal rejection. |
Applications
| Photodiode Amplifiers | Medical Instrumentation |
|---|---|
Use Scenario: Amplifying weak current from large-area photodiodes (e.g., Hamamatsu S1227-1010BQ) in optical pulse oximeters. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1MΩ feedback, operating at 350kHz bandwidth and 291nV/√Hz noise floor. Use Value: 1pA input bias prevents photocurrent loss; rail-to-rail output delivers full-scale signal to ADC without clipping. | Use Scenario: Front-end amplification of EEG/ECG electrode signals in portable diagnostic devices. IC Role / Device Role / Timing Role: Dual-channel, low-noise, high-CMRR instrumentation amplifier stage with matched offset and drift. Use Value: 2.5μV/°C max drift and 1.5μVP-P flicker noise ensure stable baseline over temperature and time. |
| Charge Coupled Amplifiers | Active Filters |
Use Scenario: Integrating charge from radiation detectors or MEMS accelerometers in energy-harvesting sensor nodes. IC Role / Device Role / Timing Role: Low-input-current integrator with 2.1pF input capacitance minimizing charge injection errors. Use Value: Sub-picoampere bias avoids integration drift; 50MHz GBW supports fast reset and settling in pulsed systems. | Use Scenario: 4th-order low-pass filtering in ultrasound receive beamforming ASICs. IC Role / Device Role / Timing Role: Dual op-amp implementing cascaded Sallen-Key stages with precise gain and phase response. Use Value: Unity-gain stability and 40V/μs slew rate preserve transient fidelity up to 3.7MHz full-power bandwidth. |
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 |
|---|---|---|---|
| LTC6228IDC#PBF | Higher GBW (165MHz), lower noise (0.9nV/√Hz @ 1kHz), but only rated for 2.7V–5.25V single-supply operation. | Not suitable for ±5V bipolar systems; requires level-shifting for legacy analog signal chains. | Select when higher speed and lower broadband noise are critical, and supply is constrained to ≤5.25V. |
| OPA2189IDR | Zero-drift architecture, 0.005μV/°C drift, but higher 1/f noise (3.5μVP-P) and limited slew rate (10V/μs). | Better for ultra-stable DC gain, worse for AC-coupled photodiode pulses due to chopping artifacts and bandwidth limitation. | Select when long-term DC accuracy dominates over pulse fidelity and wideband noise performance. |
Compared with LTC6244HVCDD#PBF, LTC6228IDC#PBF offers superior speed and noise at the cost of HV compatibility, while OPA2189IDR trades broadband performance for near-zero drift-making LTC6244HVCDD#PBF the optimal choice for ±5V, low-noise, high-slew-rate sensor interfaces requiring both precision and bandwidth.
Availability
LTC6244HVCDD#PBF is available at Aetrix Electronics and suitable for photodiode amplifiers, medical instrumentation, and active filter designs requiring stable component supply with guaranteed ±5V operation and 0°C to 70°C qualification.
Supply support for LTC6244HVCDD#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC6244 product line was developed by Linear Technology (acquired by ADI in 2017) specifically for high-impedance, low-noise, high-speed signal conditioning in scientific instrumentation and precision sensor interfaces.
FAQ
What is the maximum supply voltage rating for LTC6244HVCDD#PBF?
The LTC6244HVCDD#PBF is an HV variant rated for total supply voltage up to ±5.25V (10.5V total), with absolute maximum ratings specifying 12V between V+ and V–. It is fully specified and guaranteed over ±5V operation across 0°C to 70°C, distinguishing it from standard LTC6244 variants limited to 2.8V–6V single-supply use.
Does LTC6244HVCDD#PBF support rail-to-rail input common-mode range?
No. The LTC6244HVCDD#PBF supports input common-mode voltage from V– to (V+ – 1.5V) - i.e., down to the negative rail but not to the positive rail. At ±5V supply, this allows VCM from –5V to +3.5V. Exceeding this range may cause instability or phase inversion, especially in unity-gain follower configurations.
How does the exposed pad on the DFN package of LTC6244HVCDD#PBF function?
The exposed pad (Pin 9, not numbered in 8-pin top view) on the LTC6244HVCDD#PBF DFN package is internally connected to V–. It serves as a thermal and electrical path to improve power dissipation and PSRR. PCB connection to the V– plane is optional but recommended for optimal thermal performance and noise immunity in high-precision layouts.
What is the typical input offset voltage drift over temperature for LTC6244HVCDD#PBF?
The LTC6244HVCDD#PBF has a maximum input offset voltage drift of 2.5μV/°C over its specified temperature range (0°C to 70°C). This value is measured on MS8-package variants; DFN-packaged units exhibit comparable drift behavior, supported by distribution data showing tight μV/°C clustering across production lots.
Can LTC6244HVCDD#PBF drive capacitive loads directly without external isolation?
The LTC6244HVCDD#PBF can drive moderate capacitive loads (≤100pF) without external series resistance, but overshoot increases significantly beyond that. For loads >100pF, a small series resistor (e.g., 10Ω–50Ω) at the output is recommended to maintain stability and reduce ringing, as confirmed by typical performance curves (Figures G30–G32) in the datasheet.
LTC6244HVCDD#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:
- 40V/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):
- 5.25 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LTC6244HVCDD#PBF FAQ
1.How can I place an order for LTC6244HVCDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6244HVCDD#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 LTC6244HVCDD#PBF reliable?
The price and inventory of LTC6244HVCDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6244HVCDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC6244HVCDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6244HVCDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6244HVCDD#PBF?
LTC6244HVCDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6244HVCDD#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 LTC6244HVCDD#PBF?
For technical support, including LTC6244HVCDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6244HVCDD#PBF requirements.
6.How does Aetrix verify that LTC6244HVCDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6244HVCDD#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 LTC6244HVCDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC6244HVCDD#PBF?
All LTC6244HVCDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6244HVCDD#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 LTC6244HVCDD#PBF part is unused and in its original packaging.
Return procedure for LTC6244HVCDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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