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Analog Devices Inc. LTC6244HVCDD#TRPBF
- Part No.:
- LTC6244HVCDD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6244HVCDD#TRPBF.pdf
- Description:
- IC CMOS 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,621
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Product details
Overview
LTC6244HVCDD#TRPBF from Analog Devices (formerly Linear Technology) is a dual, high-speed, rail-to-rail output CMOS operational amplifier optimized for low-noise, high-precision photodiode and transducer signal conditioning. It delivers 50MHz gain bandwidth, 40V/μs slew rate, 1pA input bias current, 1.5μVP-P 0.1Hz–10Hz noise, and operates on ±5V supplies with guaranteed performance from 0°C to 70°C - making it ideal for medical instrumentation front-ends and precision optical sensing.
For engineers reviewing the LTC6244HVCDD#TRPBF datasheet, LTC6244HVCDD#TRPBF pinout, LTC6244HVCDD#TRPBF application, or LTC6244HVCDD#TRPBF equivalent, key selection criteria include its HV-rated supply range (±5V), DFN-8 package footprint, sub-100μV max offset voltage, and validated performance in charge-amplifier topologies with >3000pF photodiode capacitance.
Technical Context
The LTC6244HVCDD#TRPBF employs a CMOS input stage with laser-trimmed matched transistors to achieve low offset and drift, combined with a folded-cascode architecture enabling rail-to-rail output swing within 35mV of either supply rail and input common-mode range extending to V–. Its internal compensation ensures unity-gain stability without external components.
This variant belongs to the LTC6244HV family, explicitly specified for ±5V operation (10.5V total supply), with enhanced common-mode rejection (80dB min over –5V to +3.5V) and full-power bandwidth up to 4.3MHz at 3VP-P output - critical for fast settling in active filter and CCD driver applications where phase margin must remain >60° across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 50MHz - enables stable closed-loop gain ≥10 at 5MHz, suitable for anti-aliasing filters and wideband sensor interfaces. |
| Slew Rate | 40V/μs - supports 3VP-P output at ≤4.3MHz full-power bandwidth without distortion in high-dynamic-range signal chains. |
| Input Bias Current | 1pA (typ @ 25°C) - minimizes voltage error in GΩ-range photodiode or piezoelectric transducer amplifiers. |
| 0.1Hz–10Hz Noise | 1.5μVP-P - preserves DC accuracy in low-frequency medical measurements (e.g., ECG, EEG) without chopper-induced artifacts. |
| Input Offset Voltage | 100μV (max) - ensures ≤0.5% gain error in 100mV full-scale transducer outputs without trimming. |
| Supply Range | ±5V (10.5V total) - compatible with legacy bipolar analog rails and eliminates need for level-shifting in industrial I/O modules. |
| Output Swing | Rail-to-rail (within 35mV) - maximizes dynamic range in 5V single-supply or ±5V systems, reducing ADC headroom loss. |
Pinout & Package
Package: 8-lead (3mm × 3mm) plastic DFN (DD package), exposed pad connected to V– for thermal and noise performance. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT A | Amplifier A output | Capable of sourcing/sinking 10mA; rail-to-rail swing enables direct interface to SAR ADC reference buffers. |
| 2: –IN A | Inverting input A | Differential pair gate node; 2.1pF common-mode capacitance limits high-Z sensor bandwidth without guard traces. |
| 3: +IN A | Non-inverting input A | High-impedance CMOS node; bias current <1pA allows use with >1GΩ source impedances. |
| 4: V– | Negative supply rail | Reference for exposed thermal pad; must be low-impedance ground plane for optimal PSRR and thermal dissipation. |
| 5: V+ | Positive supply rail | Accepts +5V; PSRR >75dB up to 100kHz ensures immunity to digital supply noise in mixed-signal PCBs. |
| 6: OUT B | Amplifier B output | Matched to OUT A (channel-to-channel gain match ≤0.1dB); enables differential drive or dual-path signal processing. |
| 7: –IN B | Inverting input B | Matched to –IN A (VOS match ≤150μV); critical for common-mode rejection in instrumentation amplifier configurations. |
| 8: +IN B | Non-inverting input B | Identical electrical characteristics to +IN A; supports synchronous sampling of two sensors with correlated noise rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 1/f noise | 1.5μVP-P (0.1Hz–10Hz) enables stable DC-coupled amplification of slow-varying bio-signals without baseline wander. |
| Rail-to-rail output | Swings within 35mV of ±5V rails - delivers full 10VP-P output into 10kΩ, maximizing SNR in 16-bit+ data acquisition systems. |
| High CMRR | 80dB minimum over –5V to +3.5V input range - rejects power supply ripple and ground bounce in noisy industrial environments. |
| Low input capacitance | 2.1pF common-mode capacitance - reduces peaking and instability when driving long cables or high-CPD photodiodes (>3000pF). |
| HV supply rating | Guaranteed operation at ±5V (10.5V total) - eliminates need for external regulators in legacy analog subsystems using bipolar rails. |
Applications
| Photodiode Amplifier | Medical Instrumentation |
|---|---|
Use Scenario: Amplifying weak current from Hamamatsu S1227-1010BQ large-area photodiode (CPD = 3000pF) in spectrophotometer front-end. IC Role / Device Role: Transimpedance amplifier with 1MΩ feedback resistor, configured as unity-gain stable voltage follower. Use Value: 291nV noise at 10kHz and 350kHz bandwidth enable detection of sub-picoamp photocurrents without cooling. | Use Scenario: Low-drift, low-noise preamplifier for EEG electrode signals in portable neuro-monitoring device. IC Role / Device Role: First-stage AC-coupled amplifier with 100Hz high-pass and 1kHz low-pass filtering. Use Value: 100μV max offset and 2.5μV/°C drift ensure <10μV baseline shift over 0–40°C ambient, meeting IEC 60601-2-27 requirements. |
| Active Filter | High-Impedance Transducer Interface |
Use Scenario: 4th-order Butterworth anti-aliasing filter preceding 1MSPS SAR ADC in vibration analysis system. IC Role / Device Role: Dual op-amp implementing biquad sections with precise component matching. Use Value: 50MHz GBW and 40V/μs slew rate maintain <0.01% THD up to 200kHz, preserving harmonic content for FFT-based diagnostics. | Use Scenario: Signal conditioning for piezoresistive pressure sensor with 2kΩ bridge output impedance. IC Role / Device Role: Instrumentation amplifier input stage (gain = 100) using matched LTC6244HVCDD#TRPBF channels. Use Value: 150μV channel-to-channel VOS match and 78dB CMRR match minimize common-mode error in ratiometric bridge measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4898-2ARMZ | Higher 1GHz GBW but 2.9nV/√Hz input noise (vs. 12nV/√Hz typ for LTC6244HVCDD#TRPBF); ±3V to ±5V supply; MSOP-8 only. | Better for RF/IF gain blocks; less suitable for DC-coupled photodiode amps due to higher 1/f noise. | Select ADA4898-2ARMZ only when bandwidth >100MHz is required and low-frequency noise is secondary. |
| OPA211IDGKT | Lower 1.1nV/√Hz noise but 45MHz GBW; requires ≥±2.25V supply; DFN-8 package available. | Superior for ultra-low-noise audio or precision DAC buffers; lacks HV rating for ±5V legacy systems. | Choose OPA211IDGKT when sub-2nV/√Hz noise dominates design priority and supply is ≥±2.25V. |
Compared with ADA4898-2ARMZ and OPA211IDGKT, the LTC6244HVCDD#TRPBF uniquely balances 50MHz bandwidth, 1.5μVP-P 0.1–10Hz noise, ±5V operation, and DFN-8 footprint - making it the optimal choice for space-constrained, bipolar-rail medical and optical sensor designs requiring both speed and DC precision.
Availability
LTC6244HVCDD#TRPBF is available at Aetrix Electronics and suitable for photodiode amplifiers, medical instrumentation front-ends, active filter design, and high-impedance transducer interfaces requiring stable component supply across extended temperature and voltage ranges.
Supply support for LTC6244HVCDD#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, 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 LTC6244 product line was designed by Linear Technology (acquired by ADI in 2017) specifically for precision, high-speed signal conditioning in low-noise, high-impedance sensor applications - emphasizing rail-to-rail output, ultra-low input bias current, and robust AC performance.
FAQ
What is the maximum supply voltage rating for LTC6244HVCDD#TRPBF?
The LTC6244HVCDD#TRPBF is rated for a total supply voltage of up to 12V, supporting operation on ±5V supplies (10.5V typical). Absolute maximum ratings specify ±6V (12V total), but guaranteed performance is documented only up to ±5V per the LTC6244HV family specifications. Exceeding ±5V may degrade parameters like CMRR and PSRR without characterization.
Does LTC6244HVCDD#TRPBF support rail-to-rail input common-mode range?
No, the LTC6244HVCDD#TRPBF does not support rail-to-rail input. Its input common-mode voltage range extends from V– to V+ – 1.5V (i.e., –5V to +3.5V on ±5V supplies), as guaranteed by CMRR specification. Operation beyond this range risks reduced CMRR and potential instability, especially in unity-gain follower configurations near the positive rail.
What is the thermal performance of LTC6244HVCDD#TRPBF in the DFN-8 package?
The LTC6244HVCDD#TRPBF in the 3mm × 3mm DFN-8 package has a junction-to-ambient thermal resistance (θJA) of 43°C/W when mounted on a standard 2-layer PCB with the exposed pad soldered to a 1-in² copper area. This enables continuous operation at full 14.8mA total supply current (7.4mA per amplifier) up to +85°C ambient without derating, provided the PCB layout follows recommended thermal guidelines.
Can LTC6244HVCDD#TRPBF drive capacitive loads directly?
The LTC6244HVCDD#TRPBF is stable with capacitive loads up to 100pF when used in unity-gain configuration, as verified in Typical Performance Characteristics (Figure G30–G32). For loads >100pF, a series isolation resistor (RS = 10Ω to 50Ω) is required at the output to maintain phase margin >60° and prevent overshoot - critical in photodiode transimpedance applications with long PCB traces.
How does the input bias current of LTC6244HVCDD#TRPBF vary with temperature?
The input bias current of LTC6244HVCDD#TRPBF increases with temperature, ranging from 1pA (typ) at 25°C to ≤75pA at 125°C, as specified in Electrical Characteristics tables. This exponential rise is inherent to CMOS input stage leakage and must be accounted for in GΩ-range sensor designs operating above 85°C, where bias current can introduce measurable offset errors.
LTC6244HVCDD#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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#TRPBF FAQ
1.How can I place an order for LTC6244HVCDD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6244HVCDD#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 LTC6244HVCDD#TRPBF reliable?
The price and inventory of LTC6244HVCDD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6244HVCDD#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6244HVCDD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6244HVCDD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6244HVCDD#TRPBF?
LTC6244HVCDD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6244HVCDD#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 LTC6244HVCDD#TRPBF?
For technical support, including LTC6244HVCDD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6244HVCDD#TRPBF requirements.
6.How does Aetrix verify that LTC6244HVCDD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6244HVCDD#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 LTC6244HVCDD#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6244HVCDD#TRPBF?
All LTC6244HVCDD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6244HVCDD#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 LTC6244HVCDD#TRPBF part is unused and in its original packaging.
Return procedure for LTC6244HVCDD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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