My Inquiry
My Account
Analog Devices Inc. LT1815CS8#PBF
- Part No.:
- LT1815CS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1815CS8#PBF.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:131
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1815CS8#PBF from Analog Devices (formerly Linear Technology) is a single-channel, high-speed, programmable-current operational amplifier in an 8-lead SOIC package. It delivers 220MHz gain-bandwidth, 1500V/µs slew rate, 6.5mA supply current per amplifier, ±3.5V input common-mode range at ±5V supplies, and unity-gain stability-enabling precision video buffering and RF signal conditioning in space-constrained industrial instrumentation.
For engineers reviewing the LT1815CS8#PBF datasheet, LT1815CS8#PBF pinout, LT1815CS8#PBF application, or LT1815CS8#PBF equivalent, key selection criteria include its programmable current mode (via ISET pin), low 1.5mV max input offset voltage, 6nV/√Hz input noise, ±3.5V output swing into 100Ω at ±5V supplies, and guaranteed operation from 0°C to 70°C.
Technical Context
The LT1815CS8#PBF uses a voltage-feedback topology with current-feedback slewing characteristics, enabling both high DC accuracy and fast transient response. Its input stage employs complementary NPN/PNP emitter followers for bias current cancellation, while the ISET pin allows dynamic adjustment of supply current between 1mA (low-power mode) and 6.5mA (full-speed mode) via external resistor programming.
It operates from ±1.25V to ±5.5V dual supplies or 2.5V to 5V single supply, supports rail-to-rail output swing under load (e.g., 1V to 4V on 5V supply with 100Ω load referenced to 2.5V), and maintains 75dB CMRR and 78dB PSRR across frequency-making it suitable for mixed-signal front-ends where supply rejection and common-mode immunity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 220MHz - enables stable closed-loop operation up to 100MHz in moderate-gain configurations (e.g., AV = 2) |
| Slew Rate | 1500V/µs - supports clean 5MHz, 2VP-P output into 100Ω without distortion (THD = –70dB) |
| Supply Current | 6.5mA per amplifier - configurable down to 1mA via ISET pin for power-sensitive battery or portable systems |
| Input Offset Voltage | 1.5mV max - ensures <±100µV error in 100Ω source-balanced precision gain stages |
| Input Noise Density | 6nV/√Hz - preserves SNR in low-level signal amplification (e.g., sensor interfaces, ADC drivers) |
| Output Drive | ±50mA min - drives 100Ω loads to ±3.5V with ±5V supplies, supporting active filter and cable driver topologies |
| Operating Temp Range | 0°C to 70°C - qualified for commercial-grade embedded control and test equipment applications |
Pinout & Package
LT1815CS8#PBF is housed in an 8-lead plastic SO (Small Outline) package (S8), 3.9mm × 4.9mm body, 1.27mm lead pitch, JEDEC MS-012AC compliant. Thermal resistance θJA = 150°C/W with standard PCB layout.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output - capable of ±50mA drive into 100Ω, rail-to-rail swing under specified load conditions |
| 2 | V– | Negative supply terminal - internally connected to substrate; must be decoupled with 0.01µF ceramic capacitor |
| 3 | +IN | Non-inverting input - high-impedance (≥1.5MΩ differential), supports ±3.5V common-mode range at ±5V supplies |
| 4 | –IN | Inverting input - matched to +IN for bias current cancellation; requires balanced source impedances for minimal offset |
| 5 | NC | No connect - electrically isolated; no internal connection or function |
| 6 | NC | No connect - electrically isolated; no internal connection or function |
| 7 | V+ | Positive supply terminal - accepts ±1.25V to ±5.5V dual or 2.5V to 5V single supply; requires local 0.01µF bypass |
| 8 | ISET | Current programming input - connects to V– via resistor (≤75Ω for full speed; up to 40kΩ for low-power mode) |
Key Features
| Feature | Design Value |
|---|---|
| Programmable supply current | Adjustable from 1mA to 6.5mA via external ISET resistor - enables dynamic trade-off between speed and power in portable or thermally constrained designs |
| Unity-gain stable | Operates unconditionally stable at AV = 1 - eliminates need for external compensation in buffer and follower applications |
| Low input offset drift | 10µV/°C max - minimizes thermal-induced gain error in precision transducer signal chains over temperature |
| High output current | ±50mA minimum into 100Ω - supports direct driving of coaxial cables, ADC reference buffers, and active filter feedback networks |
| Wide supply range | Operates from ±1.25V to ±5.5V dual or 2.5V to 5V single supply - compatible with legacy ±5V and modern low-voltage systems |
Applications
| Video Line Driver | High-Speed Data Acquisition |
|---|---|
Use Scenario: Driving 75Ω coaxial video lines in broadcast equipment or medical imaging displays. IC Role / Device Role / Timing Role: Unity-gain buffer with low distortion and fast settling (15ns to 0.1%) to preserve luminance/chrominance integrity. Use Value: –70dB THD at 5MHz ensures minimal color bleeding and timing jitter in SD/HD analog video paths. | Use Scenario: Conditioning sensor outputs before high-speed SAR or pipeline ADCs in automated test equipment. IC Role / Device Role / Timing Role: Low-noise, wideband gain stage with 6nV/√Hz input noise and 220MHz GBW for anti-aliasing and signal fidelity. Use Value: Enables >10-bit ENOB at 10Msps sampling by limiting noise contribution to <0.5 LSB RMS. |
| RF Signal Chain Buffer | Active Filter Stage |
Use Scenario: Inter-stage isolation and level shifting in 100MHz IF amplifiers for cellular base station receivers. IC Role / Device Role / Timing Role: High-slew-rate, low-phase-noise buffer isolating mixer output from filter input impedance variations. Use Value: 1500V/µs slew rate prevents waveform clipping during large-signal IF transients, preserving adjacent-channel selectivity. | Use Scenario: Implementing 4th-order Chebyshev low-pass filters in spectrum analyzers with tunable cutoff up to 50MHz. IC Role / Device Role / Timing Role: High-output-current op-amp driving reactive feedback networks without peaking or instability. Use Value: ±50mA drive capability sustains filter Q-factor and passband flatness even with 100pF parasitic capacitance at node junctions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4897-1ARJZ-R7 | Lower 1nV/√Hz noise, fixed 12mA supply current, no ISET pin; 200MHz GBW, 275V/µs slew rate | Better for ultra-low-noise preamp stages; unsuitable where dynamic current scaling is required | Select when noise dominates design budget and programmability is unnecessary |
| LMH6629MA/NOPB | Higher 2.5mA input bias current, 1.2GHz GBW, 3000V/µs slew rate, no programmable current, 12V max supply | Targeted at higher-frequency RF/IF applications (>200MHz); less optimized for DC precision | Select for >300MHz small-signal bandwidth needs where offset and drift are secondary |
Compared with ADA4897-1ARJZ-R7 and LMH6629MA/NOPB, the LT1815CS8#PBF uniquely balances programmable power, 220MHz bandwidth, and sub-2mV offset-making it optimal for cost-sensitive, thermally constrained instrumentation requiring both speed and DC fidelity without redesigning supply rails or layout.
Availability
LT1815CS8#PBF is available at Aetrix Electronics and suitable for video line driving, high-speed data acquisition, RF signal chain buffering, and active filter design requiring stable component supply across commercial temperature grades.
Supply support for LT1815CS8#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 acquired Linear Technology in 2017 and maintains its high-performance analog portfolio, including precision, high-speed, and power-efficient signal conditioning ICs.
The LT1815CS8#PBF belongs to the LT1815/LT1816/LT1817 family of programmable-current, high-speed op-amps designed for applications demanding wide bandwidth, low distortion, and flexible power management in compact SOIC and MSOP packages.
FAQ
What is the maximum output current specification for LT1815CS8#PBF?
The LT1815CS8#PBF delivers a minimum of ±50mA output current when VOUT = ±3V and RL = 100Ω, measured at TA = 0°C to 70°C. This is verified under full-speed mode (ISET pin tied to V– via ≤75Ω). In low-power mode (40kΩ ISET resistor), output current remains ≥±50mA but slew rate and bandwidth reduce proportionally.
Does LT1815CS8#PBF support single-supply operation?
Yes, LT1815CS8#PBF operates from a single 5V supply with rail-to-rail output swing: it delivers 1V to 4V output into a 100Ω load referenced to 2.5V. Input common-mode range extends from 0.9V to 4.1V (min/max, –40°C to 85°C), enabling use in 3.3V and 5V data acquisition front-ends without level-shifting circuitry.
How is the ISET pin used to program supply current in LT1815CS8#PBF?
The ISET pin on LT1815CS8#PBF is connected to V– via an external resistor (RSET). With RSET ≤ 75Ω, the device operates at full 6.5mA supply current and 220MHz GBW. Increasing RSET to 40kΩ reduces supply current to ~1mA and GBW to ~35MHz. The relationship is monotonic and documented in Figure 2 of the LT1815 datasheet.
Is LT1815CS8#PBF unity-gain stable?
Yes, LT1815CS8#PBF is explicitly unity-gain stable across its full operating temperature range (0°C to 70°C). No external compensation is required for AV = 1 configurations. Stability is maintained with capacitive loads ≤10pF; larger loads require a 10Ω–50Ω isolation resistor in series with the output.
What is the input offset voltage specification for LT1815CS8#PBF?
The LT1815CS8#PBF has a maximum input offset voltage of 1.5mV at TA = –40°C to 85°C and 2.0mV typical at 25°C. For the C-grade (0°C to 70°C) version like LT1815CS8#PBF, the max is 1.5mV over temperature, confirmed in the Electrical Characteristics table on page 3 of the datasheet under "VOS, Input Offset Voltage".
LT1815CS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1500V/µs
- Gain Bandwidth Product:
- 220 MHz
- -3db Bandwidth:
- 350 MHz
- Current - Input Bias:
- 2 µA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 6.5mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1815CS8#PBF FAQ
1.How can I place an order for LT1815CS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1815CS8#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 LT1815CS8#PBF reliable?
The price and inventory of LT1815CS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1815CS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1815CS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1815CS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1815CS8#PBF?
LT1815CS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1815CS8#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 LT1815CS8#PBF?
For technical support, including LT1815CS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1815CS8#PBF requirements.
6.How does Aetrix verify that LT1815CS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1815CS8#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 LT1815CS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1815CS8#PBF?
All LT1815CS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1815CS8#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 LT1815CS8#PBF part is unused and in its original packaging.
Return procedure for LT1815CS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1815CS8#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…
