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Analog Devices Inc. LTC6244HVIDD#PBF
- Part No.:
- LTC6244HVIDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6244HVIDD#PBF.pdf
- Description:
- IC CMOS 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:163
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Product details
Overview
LTC6244HVIDD#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 across –40°C to +85°C - enabling high-fidelity amplification in medical instrumentation and optical sensing.
For engineers reviewing the LTC6244HVIDD#PBF datasheet, LTC6244HVIDD#PBF pinout, LTC6244HVIDD#PBF application, or LTC6244HVIDD#PBF equivalent, key selection criteria include its guaranteed HV operation at ±5V, DFN-8 package thermal performance, channel-to-channel matching for differential signal paths, and validated low-noise behavior below 10Hz for DC-coupled sensor front-ends.
Technical Context
The LTC6244HVIDD#PBF integrates a folded-cascode input stage with laser-trimmed offset and a rail-to-rail output stage using complementary MOSFETs. Its input common-mode range extends to the negative rail (V–), and it maintains unity-gain stability without external compensation.
This variant is the HV (±5V-rated) and industrial-grade (–40°C to +85°C) version in the 3mm × 3mm DFN-8 package with exposed pad connected to V–. It guarantees full AC performance - including GBW, slew rate, and noise - under ±5V supply conditions, unlike standard LTC6244 variants rated only up to 6V total supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 50MHz - supports stable closed-loop gain ≥10 at 5MHz or ≥2 at 25MHz for fast pulse amplification. |
| Slew Rate | 40V/μs - enables clean 3VP-P output at ≤3.7MHz full-power bandwidth without distortion. |
| 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 - critical for low-frequency, high-resolution measurements without chopper-induced artifacts. |
| Input Capacitance | 2.1pF (common-mode) - minimizes phase shift and peaking when driving capacitive loads or filters. |
| Supply Range | ±2.5V to ±5.25V - supports bipolar signal chains in industrial control and precision analog I/O modules. |
| Offset Voltage Max | 950μV (–40°C to +85°C, DFN package) - sets absolute DC accuracy limit in uncalibrated single-supply systems. |
Pinout & Package
Package: 8-lead (3mm × 3mm) plastic DFN with exposed thermal pad (Pin 9), lead-free finish, RoHS compliant. Thermal resistance θJA = 43°C/W (PCB-dependent).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT A | Amplifier A output | Rail-to-rail swing within 35mV of either supply rail; drives 10mA load while maintaining linearity. |
| 2 - –IN A | Inverting input A | High-impedance CMOS node; accepts signals from V– to (V+ – 1.5V); ESD-protected. |
| 3 - +IN A | Non-inverting input A | Matches –IN A in bias current and capacitance; used for unity-gain buffers or precision difference amps. |
| 4 - V– | Negative supply rail | Reference for internal biasing; exposed pad (Pin 9) is internally connected to V– and must be soldered for thermal performance. |
| 5 - V+ | Positive supply rail | Accepts up to +5.25V; PSRR >75dB ensures immunity to supply ripple in mixed-signal PCBs. |
| 6 - OUT B | Amplifier B output | Electrically identical to OUT A; enables dual-channel signal processing without inter-channel crosstalk degradation. |
| 7 - –IN B | Inverting input B | Matched to –IN A (max 1.1mV offset difference); supports matched differential gain stages. |
| 8 - +IN B | Non-inverting input B | Same layout symmetry as +IN A; critical for common-mode rejection in instrumentation amplifier configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full dynamic range in ±5V systems - e.g., ±4.965V output with 1mA load - maximizing SNR in ADC driver stages. |
| Low 1/f noise floor | 1.5μVP-P (0.1Hz–10Hz) enables sub-μV DC measurement stability in electrophysiology and strain gauge bridges. |
| High CMRR (105dB) | Maintains accuracy in noisy industrial environments where common-mode interference exceeds 100mV at 50/60Hz. |
| Unity-gain stable | Operates without external compensation in gain-of-1 configurations - simplifying photodiode transimpedance designs. |
| Channel matching | VOS match ≤1.1mV and CMRR match ≥78dB ensure precise differential signal acquisition in dual-amplifier topologies. |
Applications
| Photodiode Amplifiers | Medical Instrumentation |
|---|---|
Use Scenario: Amplifying low-level current from Hamamatsu S1227-1010BQ large-area photodiode (CPD = 3000pF) in optical blood oximetry. IC Role / Device Role: Transimpedance amplifier with 1MΩ feedback resistor, configured in inverting mode with 350kHz bandwidth. Use Value: 1.5μVP-P noise and 1pA bias current prevent signal degradation from dark current and Johnson noise in low-light conditions. | Use Scenario: Front-end amplification of EEG/ECG biopotential signals in portable diagnostic devices. IC Role / Device Role: Dual-channel, DC-coupled, high-input-impedance buffer and gain stage preceding 24-bit sigma-delta ADC. Use Value: Guaranteed –40°C to +85°C operation and <100μV offset drift ensure calibration stability across clinical environments. |
| Charge Coupled Amplifiers | Active Filters |
Use Scenario: Integrating charge pulses from radiation detection sensors (e.g., SiPM arrays) into voltage steps for time-of-flight analysis. IC Role / Device Role: Low-noise, fast-settling integrator with 330ns 0.1% settling time and 50MHz GBW for pulse fidelity. Use Value: 40V/μs slew rate prevents pulse amplitude compression during rapid charge injection events. | Use Scenario: 4th-order low-pass anti-aliasing filter in data acquisition systems sampling at 1MS/s. IC Role / Device Role: Dual op-amp implementing two 2-pole Sallen-Key stages with matched components. Use Value: Channel-to-channel VOS match ≤1.1mV and gain flatness preserve filter passband symmetry and stopband rejection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual, 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 LTC6244HVIDD#PBF); ±3V to ±5.5V supply; SOIC-8 only. | Better for RF/IF signal chain gain blocks; less suitable for sub-10Hz sensor apps due to higher 1/f noise. | Select ADA4898-2ARMZ when bandwidth >100MHz is required and low-frequency noise is secondary. |
| OPA2189IDGKT | Zero-drift architecture; 0.1μV/°C max drift vs. 2.5μV/°C; 5.6nV/√Hz noise; 2MHz GBW; DFN-8 package. | Superior DC accuracy and long-term stability; insufficient bandwidth for >100kHz active filters or fast pulse amps. | Select OPA2189IDGKT for precision DC-coupled systems where drift dominates error budget over speed. |
Compared with ADA4898-2ARMZ and OPA2189IDGKT, the LTC6244HVIDD#PBF uniquely balances 50MHz bandwidth, 1.5μVP-P 0.1Hz–10Hz noise, and ±5V operation in a thermally efficient DFN-8 - making it optimal for high-fidelity, wide-dynamic-range analog front-ends where both speed and ultra-low-frequency noise matter.
Availability
LTC6244HVIDD#PBF is available at Aetrix Electronics and suitable for photodiode amplifiers, medical instrumentation, and active filter designs requiring stable component supply across extended temperature ranges and consistent DFN-8 thermal performance.
Supply support for LTC6244HVIDD#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 designed by Linear Technology (acquired by ADI in 2017) specifically for low-noise, high-speed precision amplification in sensor interface and signal conditioning applications demanding rail-to-rail output and minimal 1/f noise.
FAQ
What is the maximum supply voltage rating for the LTC6244HVIDD#PBF?
The LTC6244HVIDD#PBF is an HV (high-voltage) variant rated for total supply voltage up to ±5.25V (10.5V total), with guaranteed operation across the full ±5V range. This distinguishes it from standard LTC6244 versions limited to 6V total supply (e.g., 3V to 6V single-ended). Absolute maximum rating is ±6V, but specifications are only guaranteed up to ±5.25V per the datasheet.
Does the LTC6244HVIDD#PBF support rail-to-rail input common-mode range?
No - the LTC6244HVIDD#PBF supports rail-to-rail *output* swing but has a limited input common-mode range: from V– to (V+ – 1.5V) under ±5V operation. At ±5V supplies, this means the input can swing from –5V to +3.5V. Exceeding +3.5V may cause instability or phase inversion, especially in unity-gain follower configurations.
How does the exposed thermal pad (Pin 9) on the LTC6244HVIDD#PBF function?
The exposed pad (Pin 9) on the LTC6244HVIDD#PBF is internally connected to the V– supply rail and serves as the primary thermal conduction path. It must be soldered to a PCB copper pour tied to V– to achieve the specified θJA = 43°C/W. Leaving it unconnected degrades thermal performance and risks exceeding junction temperature limits under sustained 7.4mA per amplifier supply current.
Is the LTC6244HVIDD#PBF unity-gain stable, and does it require external compensation?
Yes - the LTC6244HVIDD#PBF is explicitly unity-gain stable and requires no external compensation capacitors. Its internal compensation ensures phase margin >60° at unity gain across all process corners and temperatures. This allows direct use in transimpedance amplifiers, voltage followers, and active filter stages without added components or stability risk.
What is the guaranteed input offset voltage specification for the LTC6244HVIDD#PBF over temperature?
For the LTC6244HVIDD#PBF (DFN-8 package, –40°C to +85°C), the maximum input offset voltage is 950μV. This is specified in the "LTC6244HVC/I" electrical characteristics table (page 4 of datasheet) under "DD Package, –40°C to 85°C" conditions. The typical value remains 650μV, and drift is capped at 2.5μV/°C.
LTC6244HVIDD#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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LTC6244HVIDD#PBF FAQ
1.How can I place an order for LTC6244HVIDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6244HVIDD#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 LTC6244HVIDD#PBF reliable?
The price and inventory of LTC6244HVIDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6244HVIDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC6244HVIDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6244HVIDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6244HVIDD#PBF?
LTC6244HVIDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6244HVIDD#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 LTC6244HVIDD#PBF?
For technical support, including LTC6244HVIDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6244HVIDD#PBF requirements.
6.How does Aetrix verify that LTC6244HVIDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6244HVIDD#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 LTC6244HVIDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC6244HVIDD#PBF?
All LTC6244HVIDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6244HVIDD#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 LTC6244HVIDD#PBF part is unused and in its original packaging.
Return procedure for LTC6244HVIDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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