My Inquiry
My Account
Analog Devices Inc. LT1800CS8#PBF
- Part No.:
- LT1800CS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1800CS8#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:267
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1800CS8#PBF from Analog Devices (formerly Linear Technology) is a single, rail-to-rail input and output precision operational amplifier optimized for low-power, high-speed signal conditioning in 2.3V–12.6V supply systems. It delivers 80MHz gain bandwidth, 25V/µs slew rate, 350µV max input offset voltage, and rail-to-rail swing within 20mV of either supply - enabling high dynamic range in battery-powered data acquisition and sensor interface circuits.
For engineers reviewing the LT1800CS8#PBF datasheet, LT1800CS8#PBF pinout, LT1800CS8#PBF application, or LT1800CS8#PBF equivalent, key selection criteria include its guaranteed 0°C to 70°C operation, SO-8 package with standard op amp pinout, low 2mA quiescent current, and verified performance at 3V/5V/±5V supplies - critical for A/D driver, active filter, and video line driver designs requiring precision and speed without power penalty.
Technical Context
The LT1800CS8#PBF employs a dual-input-stage architecture: a PNP pair active from V– to ~1.2V below V+, and an NPN pair taking over near V+, enabling true rail-to-rail common-mode input range (0V to VS). Its complementary common-emitter output stage achieves rail-to-rail output swing with <20mV saturation voltage under load.
It features patented input bias current trimming (<250nA max), low 8.5nV/√Hz input voltage noise, and robust overdrive protection via back-to-back input diodes and ESD clamps rated to 3kV - ensuring stability when driven beyond rails or into capacitive loads up to 75pF in unity-gain configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 80MHz - supports stable closed-loop operation up to 10MHz at AV = 8, suitable for anti-aliasing filters and wideband instrumentation. |
| Slew Rate | 25V/µs - enables clean 4VP-P output at 2MHz full-power bandwidth, critical for video and fast-settling ADC drivers. |
| Input Offset Voltage | 350µV max - ensures ≤0.07% gain error in 12-bit systems with 1kΩ source impedance, minimizing calibration burden. |
| Supply Current | 2mA max - allows integration into always-on sensor nodes with <10mW total dissipation at 5V. |
| Common-Mode Rejection | 105dB - rejects >300µV of coupled noise from 1V common-mode shift, essential in noisy industrial analog front-ends. |
| Output Swing | Within 20mV of rails at 5mA - maximizes usable dynamic range in 3.3V systems, delivering >3.2VP-P signal headroom. |
| Operating Supply Range | 2.3V to 12.6V - supports direct connection to Li-ion (3.0–4.2V), USB (5V), and dual ±5V rails without regulation. |
Pinout & Package
LT1800CS8#PBF is housed in an 8-lead plastic SO (Small Outline) package with industry-standard op amp pinout and JEDEC MS-012AC footprint. Thermal resistance θJA = 190°C/W enables reliable operation up to +70°C ambient without heatsinking.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No internal connection; must be left unconnected or tied to ground per layout best practice. |
| 2 | VS– | Negative supply rail - accepts 0V (single-supply) or negative voltage (dual-supply); referenced for all input/output swings. |
| 3 | –IN | Inverting input - high-impedance node (250nA max bias) compatible with high-Z sensors and feedback networks. |
| 4 | +IN | Non-inverting input - rail-to-rail common-mode range (0V to VS+) enables direct sensing of grounded signals. |
| 5 | NC | No internal connection; electrically isolated - avoid routing traces or vias to this pad. |
| 6 | VOUT | Amplified output - drives loads down to 100Ω while maintaining rail-to-rail swing and low distortion. |
| 7 | VS+ | Positive supply rail - supplies core circuitry and output stage; bypass capacitor required at pin. |
| 8 | NC | No internal connection; thermally and electrically isolated - no PCB connection needed. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interfacing with unbuffered ADCs and DACs across full supply range, eliminating level-shifting components. |
| 80MHz GBW with 25V/µs slew rate | Supports 10-bit accuracy settling in <250ns for 2V step, meeting timing requirements of 1MSPS SAR ADC drivers. |
| 2mA max supply current | Reduces system-level power by >40% vs comparable 100MHz op amps, extending battery life in portable medical devices. |
| 350µV max input offset voltage | Minimizes DC error in precision current-sense amplifiers, enabling accurate 0.1Ω shunt monitoring at sub-100mA levels. |
| Input common-mode range includes both rails | Permits direct measurement of signals referenced to ground or VS– in single-supply systems without external bias networks. |
Applications
| High-Speed Data Acquisition | Low-Voltage Sensor Interface |
|---|---|
Use Scenario: Driving the input of a 12-bit, 1MSPS SAR ADC in a portable gas analyzer with 3.3V supply and ±2V sensor output range. IC Role / Device Role: Precision buffer and level shifter that maintains SNR >72dB while translating bipolar sensor signal to unipolar ADC input. Use Value: Rail-to-rail output swing delivers full 3.3V ADC input range; 8.5nV/√Hz noise contributes <0.5LSB noise floor at 100kHz bandwidth. | Use Scenario: Amplifying output of a 10mV/°C analog temperature sensor powered from a 3.0V coin cell in a wearable health monitor. IC Role / Device Role: Low-power, precision gain stage with 100× amplification before digitization. Use Value: 2mA supply current extends battery life to >1 year; 350µV offset introduces <0.035°C measurement error at 25°C. |
| Video Line Driver | Active Filter for Industrial Control |
Use Scenario: Driving 75Ω coaxial cable in a 1080p HDMI auxiliary channel for status signaling, operating from 5V supply. IC Role / Device Role: Unity-gain voltage follower with low output impedance and fast settling to preserve edge integrity. Use Value: 25V/µs slew rate ensures <1% overshoot on 1V step; 0.35% differential gain error preserves color fidelity in NTSC-compatible signals. | Use Scenario: Implementing a 4th-order Butterworth low-pass filter (10kHz cutoff) in a motor current feedback loop using 3.3V microcontroller I/O. IC Role / Device Role: High-precision, low-noise gain block in multiple feedback topology with tight component tolerance requirements. Use Value: 105dB CMRR rejects PWM noise coupling from adjacent power stages; 80MHz GBW ensures phase margin >60° at filter cutoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA350UA | Lower 5.5nV/√Hz noise but 50MHz GBW and 11V/µs slew rate; 3.6mA supply current. | Better for ultra-low-noise audio preamps; insufficient speed for >500kHz video or fast ADC drivers. | Select OPA350UA only when noise dominates over bandwidth requirements and 3.6mA supply is acceptable. |
| AD8605ARZ | 30MHz GBW, 5V/µs slew rate, 1.2mA supply current, 65µV max offset; no rail-to-rail output swing specification. | Optimized for micropower sensor nodes where speed <100kHz; output swing limited to 80mV from rails at 10mA. | Choose AD8605ARZ for battery lifetime-critical applications with modest bandwidth needs and relaxed output swing. |
Compared with OPA350UA and AD8605ARZ, LT1800CS8#PBF uniquely balances 80MHz bandwidth, 25V/µs slew rate, rail-to-rail I/O, and 2mA supply current - making it the only option among the three capable of driving 1MSPS ADCs or 75Ω video lines from 3.3V/5V rails without performance compromise.
Availability
LT1800CS8#PBF is available at Aetrix Electronics and suitable for high-speed data acquisition, low-voltage sensor interface, video line driving, and active filter applications requiring stable component supply and guaranteed 0°C to 70°C operation.
Supply support for LT1800CS8#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LT1800CS8#PBF belongs to Linear Technology's precision high-speed op amp product line, designed specifically for applications demanding rail-to-rail operation, low power, and wide bandwidth in space-constrained, battery-sensitive systems.
FAQ
What is the maximum capacitive load the LT1800CS8#PBF can drive stably in unity-gain configuration?
The LT1800CS8#PBF is characterized to drive up to 75pF capacitive load stably in unity-gain configuration without external compensation. For loads exceeding 75pF, a series isolation resistor of 10Ω to 50Ω between the output and load is required to maintain phase margin >60° and prevent ringing. This behavior is confirmed in Figure G30 and G31 of the official datasheet, with test conditions at VS = 5V, 0V and AV = 1.
Does the LT1800CS8#PBF support operation from a 3.0V single supply?
Yes, the LT1800CS8#PBF is fully specified and guaranteed to operate from 2.3V to 12.6V total supply voltage, including 3.0V single supply (VS– = 0V, VS+ = 3.0V). At 3.0V, it maintains rail-to-rail input range (0V to 3.0V), output swing within 225mV of each rail at 20mA sink/source, and 30MHz minimum gain bandwidth - validated across the 0°C to 70°C temperature range per the "Specified Temperature Range" table.
What is the input bias current specification for LT1800CS8#PBF at 25°C and VCM = 1V?
At TA = 25°C and input common-mode voltage VCM = 1V, the LT1800CS8#PBF has a maximum input bias current of 250nA, as stated in the "ELECTRICAL CHARACTERISTICS" table on page 3 of the datasheet under the IB parameter row with condition "VCM = 1V". This value reflects the trimmed performance enabled by the patent-pending bias cancellation circuitry described in the Applications Information section.
Can the LT1800CS8#PBF be used as a direct replacement for legacy op amps like the OP27 in existing designs?
The LT1800CS8#PBF is not a pin-compatible or functional drop-in replacement for the OP27 due to fundamental differences: OP27 uses DIP-8 or SO-8 with different pinout (e.g., OP27 pin 1 = offset null, LT1800CS8#PBF pin 1 = NC), and OP27 lacks rail-to-rail I/O, has higher supply current (4.5mA), and lower bandwidth (8MHz). While LT1800CS8#PBF offers superior AC performance and rail-to-rail operation, redesign of feedback network and supply decoupling is required to leverage its capabilities safely.
Is the LT1800CS8#PBF qualified for automotive applications?
No, the LT1800CS8#PBF is not automotive-qualified. It is specified for commercial temperature range (0°C to 70°C) and carries the "C" grade suffix (LT1800C). For automotive use, the LT1800IS8#PBF variant is available with –40°C to 85°C operation and AEC-Q100 stress testing compliance - explicitly noted in the "ORDER INFORMATION" table on page 2 of the datasheet under the "LT1800IS8#PBF" part number.
LT1800CS8#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:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 23V/µs
- Gain Bandwidth Product:
- 70 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 400 nA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 1.8mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.3 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1800CS8#PBF FAQ
1.How can I place an order for LT1800CS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1800CS8#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 LT1800CS8#PBF reliable?
The price and inventory of LT1800CS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1800CS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1800CS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1800CS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1800CS8#PBF?
LT1800CS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1800CS8#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 LT1800CS8#PBF?
For technical support, including LT1800CS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1800CS8#PBF requirements.
6.How does Aetrix verify that LT1800CS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1800CS8#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 LT1800CS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1800CS8#PBF?
All LT1800CS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1800CS8#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 LT1800CS8#PBF part is unused and in its original packaging.
Return procedure for LT1800CS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1800CS8#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…
