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Analog Devices Inc. LTC6244IMS8#TRPBF
- Part No.:
- LTC6244IMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6244IMS8#TRPBF.pdf
- Description:
- IC CMOS 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,927
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Product details
Overview
LTC6244IMS8#TRPBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail output, low-noise CMOS operational amplifier optimized for high-speed photodiode and transducer signal conditioning. It delivers 50MHz gain bandwidth, 40V/μs slew rate, 1.5μVP-P (0.1Hz–10Hz) noise, 1pA input bias current, and operates from 2.8V to 6V single supply or ±5.25V dual supply - enabling precision amplification in low-voltage, high-impedance sensor front-ends.
For engineers reviewing the LTC6244IMS8#TRPBF datasheet, LTC6244IMS8#TRPBF pinout, LTC6244IMS8#TRPBF application, or LTC6244IMS8#TRPBF equivalent, this page provides verified package mapping (8-pin MSOP), channel-matched DC/AC specs, thermal performance across –40°C to 85°C, and validated alternatives for photodiode amplifier, active filter, and medical instrumentation designs.
Technical Context
The LTC6244IMS8#TRPBF integrates two independent, unity-gain stable CMOS op amps with folded-cascode input stages that extend common-mode range to the negative rail and enable rail-to-rail output swing within 35mV of either supply. Its laser-trimmed input stage achieves ≤100μV max offset and 2.5μV/°C drift, while internal compensation (CM, C1) preserves bandwidth without sacrificing stability into capacitive loads.
Designed for low-noise, high-Z applications, it features 2.1pF differential input capacitance and 1012Ω input resistance - minimizing signal degradation in photodiode and piezoelectric transducer interfaces. The device is fully specified at 3V and 5V supplies, with HV variants supporting ±5V operation, but the LTC6244IMS8#TRPBF variant is rated for 2.8V–6V single-supply or ±5.25V dual-supply operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 50MHz - enables stable closed-loop operation up to 50MHz at unity gain for fast pulse amplification and active filtering. |
| Slew Rate | 40V/μs - supports clean 3VP-P output transitions at ≥3.7MHz full-power bandwidth with minimal distortion. |
| Input Offset Voltage | ≤100μV (max, –40°C to 85°C) - ensures sub-1LSB error in 16-bit systems with <10kΩ source impedance. |
| 0.1Hz–10Hz Noise | 1.5μVP-P - critical for DC-coupled, low-frequency sensor interfaces like ECG front-ends and strain gauge amplifiers. |
| Input Bias Current | 1pA (typ at 25°C) - allows use with >1GΩ photodiode or piezoelectric sources without significant signal loss. |
| Supply Range | 2.8V to 6V single supply or ±5.25V dual supply - supports battery-powered portable instrumentation and industrial 5V systems. |
| Output Swing | Rail-to-rail, within 35mV of V+ and V– - maximizes dynamic range in low-voltage ADC interfacing (e.g., 3.3V SAR ADCs). |
Pinout & Package
Package: 8-lead plastic MSOP (LTCCM marking), 3mm × 3mm body, exposed pad optional (not electrically connected). Rated for –40°C to 85°C operating temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT A | Amplifier A output | Drives external load; rail-to-rail swing supports direct connection to low-voltage ADC inputs. |
| 2 - –IN A | Inverting input A | High-impedance node; 2.1pF input capacitance requires careful PCB layout to avoid instability in transimpedance configurations. |
| 3 - +IN A | Non-inverting input A | Common-mode range extends to V–; enables ground-referenced sensor interfaces without level-shifting. |
| 4 - V– | Negative supply | Reference for both amplifiers; exposed pad (Pin 9) may be connected to V– for improved thermal performance. |
| 5 - V+ | Positive supply | Accepts 2.8V–6V single supply or positive rail of ±5.25V dual supply; PSRR >75dB minimizes supply ripple coupling. |
| 6 - OUT B | Amplifier B output | Independent output; channel-to-channel VOS match ≤160μV enables precision differential signal conditioning. |
| 7 - –IN B | Inverting input B | Matched to –IN A; supports dual-channel synchronous acquisition (e.g., I/Q demodulation, dual-axis sensor readout). |
| 8 - +IN B | Non-inverting input B | Identical specs to +IN A; enables matched gain/phase response in dual-path active filters or instrumentation amplifiers. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 1/f noise | 1.5μVP-P (0.1Hz–10Hz) enables stable DC-coupled amplification of slow-moving biological signals without chopper artifacts. |
| Rail-to-rail output | Swings within 35mV of V+ and V– on 2.8V supply - preserves >94% of available dynamic range for 12-bit+ data acquisition. |
| Low input capacitance | 2.1pF differential input capacitance reduces peaking and phase margin loss in photodiode transimpedance amplifiers. |
| High CMRR & PSRR | ≥74dB CMRR and ≥75dB PSRR ensure rejection of common-mode interference and supply noise in noisy industrial environments. |
| Channel matching | VOS match ≤160μV and CMRR match ≥72dB support precision differential measurements without post-calibration trimming. |
Applications
| Photodiode Amplifier | Active Filter |
|---|---|
|
Use Scenario: Amplifying weak current from Hamamatsu S1227-1010BQ large-area photodiode (CPD = 3000pF) in optical smoke detection. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1MΩ feedback resistor; dual-channel configuration enables reference/active channel subtraction. Use Value: 1pA input bias current prevents signal loss; 1.5μVP-P noise ensures detection of sub-nA photocurrents at 10Hz bandwidth. |
Use Scenario: 4th-order low-pass filter (350kHz cutoff) for anti-aliasing before 1MSPS SAR ADC in portable ultrasound front-end. IC Role / Device Role / Timing Role: Dual op amp implementing two 2nd-order Sallen-Key stages; GBW >50MHz ensures <0.1dB passband flatness. Use Value: 40V/μs slew rate prevents slew-induced distortion on 2VP-P pulses; rail-to-rail output drives ADC directly without level-shifting. |
| Medical Instrumentation | High-Impedance Transducer Amplifier |
|
Use Scenario: First-stage amplification in portable ECG monitor using dry electrodes with >100MΩ contact impedance. IC Role / Device Role / Timing Role: Non-inverting amplifier (G = 10) with guard-driven PCB traces; dual-channel supports lead I/II/III derivation. Use Value: 1012Ω input resistance avoids signal attenuation; 2.5μV/°C drift limits baseline wander to <200μV over 0–50°C ambient range. |
Use Scenario: Signal conditioning for piezoelectric pressure sensor (100pF, 109Ω leakage) in industrial vibration monitoring. IC Role / Device Role / Timing Role: Charge amplifier with integrator capacitor; low input capacitance minimizes settling time after transient events. Use Value: 2.1pF input capacitance reduces pole frequency shift vs. higher-C op amps; 50MHz GBW supports >100kHz resonance capture. |
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 1GHz GBW but 2.9nV/√Hz (1kHz) noise vs. 8–12nV/√Hz for LTC6244IMS8#TRPBF; 1.2mA supply current per amp vs. 7.4mA. | Better for wideband RF/IF gain blocks; less suitable for low-frequency, low-noise sensor front-ends due to higher voltage noise. | Select ADA4898-2ARMZ when bandwidth >100MHz is required and noise above 1kHz dominates system SNR. |
| OPA2189IDGKR | Zero-drift architecture; 0.1μV/°C drift vs. 2.5μV/°C; but 5.6nV/√Hz (1kHz) noise and 12MHz GBW limit high-speed use. | Ideal for DC-precision applications (e.g., weigh scales); cannot replace LTC6244IMS8#TRPBF in >1MHz active filters or photodiode amps. | Choose OPA2189IDGKR only for ultra-stable DC gain paths where 50MHz bandwidth is unnecessary. |
Compared with ADA4898-2ARMZ and OPA2189IDGKR, the LTC6244IMS8#TRPBF uniquely balances 50MHz bandwidth, 1.5μVP-P low-frequency noise, and 1pA input bias - making it the optimal choice for high-Z, medium-bandwidth sensor interfaces where both speed and sub-μV noise matter.
Availability
LTC6244IMS8#TRPBF is available at Aetrix Electronics and suitable for photodiode amplifiers, active filters, and medical instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing for FDA-regulated designs.
Supply support for LTC6244IMS8#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 LTC6244IMS8#TRPBF belongs to ADI's precision high-speed op amp product line, engineered specifically for low-noise, rail-to-rail signal conditioning in sensor front-ends, medical devices, and test equipment where DC accuracy and AC fidelity must coexist.
FAQ
What is the maximum operating temperature range for the LTC6244IMS8#TRPBF?
The LTC6244IMS8#TRPBF is specified for operation from –40°C to +85°C. This industrial-grade temperature range is confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables, and applies to both DC and AC parameters including gain bandwidth, noise, and offset voltage drift. The "I" grade designation in the part number explicitly denotes this extended temperature capability.
Does the LTC6244IMS8#TRPBF support true rail-to-rail input common-mode range?
No - the LTC6244IMS8#TRPBF features rail-to-rail *output* swing but not rail-to-rail *input*. Its input common-mode voltage range extends to the negative rail (V–) but only to V+ – 1.5V under typical conditions. For example, with a 5V supply, the usable input range is 0V to 3.5V. Exceeding this upper limit risks instability, as documented in the Applications Information section.
Can the LTC6244IMS8#TRPBF drive capacitive loads without oscillation?
Yes, but with design constraints. The LTC6244IMS8#TRPBF can safely drive ≥100pF loads when series output resistance (RS) ≥10Ω is used, as shown in Figure G30–G32. Without RS, capacitive loads >30pF may cause overshoot or ringing. This behavior is inherent to its internal compensation and must be verified in the final PCB layout using the recommended test circuits.
What is the typical supply current per amplifier for the LTC6244IMS8#TRPBF at 5V supply?
The typical supply current per amplifier for the LTC6244IMS8#TRPBF is 7.4mA at VS = 5V and TA = 25°C, as specified in the Electrical Characteristics table (page 4). This value increases slightly at elevated temperatures and decreases to ~6.25mA at minimum 2.8V supply. Total quiescent current for the dual amplifier is therefore ~14.8mA typical at 5V.
Is the LTC6244IMS8#TRPBF pin-compatible with other variants like the LTC6244HVCMS8#TRPBF?
Yes - all MSOP-packaged LTC6244 variants, including LTC6244IMS8#TRPBF and LTC6244HVCMS8#TRPBF, share identical 8-pin MSOP pinouts and footprints. However, they differ in supply voltage rating (LTC6244IMS8#TRPBF: 2.8V–6V; LTC6244HVCMS8#TRPBF: ±5V), temperature range, and certain AC specs - so electrical compatibility must be verified per application requirements.
LTC6244IMS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LTC6244IMS8#TRPBF FAQ
1.How can I place an order for LTC6244IMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6244IMS8#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 LTC6244IMS8#TRPBF reliable?
The price and inventory of LTC6244IMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6244IMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6244IMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6244IMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6244IMS8#TRPBF?
LTC6244IMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6244IMS8#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 LTC6244IMS8#TRPBF?
For technical support, including LTC6244IMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6244IMS8#TRPBF requirements.
6.How does Aetrix verify that LTC6244IMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6244IMS8#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 LTC6244IMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6244IMS8#TRPBF?
All LTC6244IMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6244IMS8#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 LTC6244IMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC6244IMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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