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Analog Devices Inc. LT1804CS8#PBF
- Part No.:
- LT1804CS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1804CS8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,640
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Product details
Overview
LT1804CS8#PBF from Analog Devices (formerly Linear Technology) is a dual rail-to-rail input and output operational amplifier optimized for high-speed, low-voltage signal conditioning. It delivers 100 V/µs slew rate, 85 MHz gain bandwidth product, 21 nV/√Hz input voltage noise, ±42 mA output drive, and operates from 2.3 V to 12.6 V supplies - enabling precision buffering in ADC front-ends and video line drivers.
For engineers reviewing the LT1804CS8#PBF datasheet, LT1804CS8#PBF pinout, LT1804CS8#PBF application, or LT1804CS8#PBF equivalent, key selection criteria include rail-to-rail I/O swing within 20 mV of rails, channel-to-channel matching (≤1 mV offset match), low quiescent current (3 mA per amplifier), and SO-8 package compatibility with standard op amp footprints.
Technical Context
The LT1804CS8#PBF employs a dual-input-stage architecture: a PNP pair active near the negative rail and an NPN pair active near the positive rail, enabling true rail-to-rail common-mode input range (VS– to VS+). Its complementary common-emitter output stage supports rail-to-rail output swing with <20 mV saturation voltage under load.
It maintains stable unity-gain operation with capacitive loads up to 100 pF when series output resistance is used, and achieves 0.01% settling in 350 ns at 2 V step. Performance is specified across –40°C to 85°C for the 'C' grade, with guaranteed DC precision including 0.7 mV max input offset voltage (VCM = 0 V) and 69 dB min CMRR at 5 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 100 V/µs - enables clean 10 MHz full-power sine wave output without slewing distortion |
| Gain Bandwidth Product | 85 MHz - supports stable closed-loop gain ≥10 at 8 MHz or ≥2 at 40 MHz |
| Input Common Mode Range | VS– to VS+ - accepts signals at either supply rail, eliminating level-shifting in single-supply systems |
| Output Swing | Within 20 mV of VS– and VS+ at no load - maximizes dynamic range in 3.3 V or 5 V systems |
| Supply Current per Amplifier | 3 mA max - allows dual-channel high-speed amplification with <6 mA total quiescent draw |
| Input Voltage Noise | 21 nV/√Hz at 10 kHz - preserves SNR in sensor interfaces and post-filter amplification stages |
| Short-Circuit Current | 42 mA - drives heavy loads (e.g., 150 Ω video lines) without clipping or thermal shutdown |
Pinout & Package
LT1804CS8#PBF is housed in an 8-pin plastic SO (SO-8) package with standard dual op amp pinout and JEDEC MS-012AC footprint. Thermal resistance θJA is 190°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Inverting amplifier output A - directly drives downstream ADC reference buffer or filter stage |
| 2 | –IN A | Inverting input A - connects to feedback network for gain-setting or inverting configuration |
| 3 | +IN A | Non-inverting input A - accepts single-ended sensor or DAC output with rail-to-rail common-mode support |
| 4 | V– | Negative supply rail - must be decoupled locally with 0.1 µF ceramic capacitor |
| 5 | +IN B | Non-inverting input B - independent channel for dual-path signal processing (e.g., differential receiver) |
| 6 | –IN B | Inverting input B - supports matched gain/phase response with Channel A for instrumentation applications |
| 7 | OUT B | Inverting amplifier output B - provides second high-fidelity output without cross-talk |
| 8 | V+ | Positive supply rail - accepts 2.3 V to 12.6 V single or split supplies; requires local 0.1 µF bypass |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interfacing with 0 V–3.3 V logic, SAR ADC references, and low-voltage sensors without external biasing |
| Low input offset voltage drift | 10–35 µV/°C - ensures stable DC accuracy over industrial temperature range without recalibration |
| High PSRR (90 dB) | Maintains signal integrity in noisy mixed-signal PCBs by rejecting supply ripple up to 100 kHz |
| Channel-to-channel matching | ≤1 mV input offset match and ≤69 dB CMRR match - critical for dual-channel instrumentation and differential receivers |
| Robust ESD protection | Back-to-back input diodes and rail clamps allow safe operation with inputs driven beyond rails (±10 mA max) |
Applications
| ADC Driver | Video Line Driver |
|---|---|
Use Scenario: Driving the input of a 12-bit, 1 MSPS SAR ADC in a portable data acquisition system powered from a 3.3 V LDO. IC Role / Device Role / Timing Role: Buffer and level-shift sensor output to match ADC reference voltage while maintaining fast settling (<500 ns) and low THD. Use Value: Rail-to-rail output swing ensures full-scale utilization of ADC input range; 21 nV/√Hz noise avoids degrading effective resolution below 11.5 bits. | Use Scenario: Transmitting composite NTSC video signals over 75 Ω coaxial cable in a broadcast monitor interface board. IC Role / Device Role / Timing Role: High-current, low-distortion output driver with 0.15% differential gain and 1° differential phase error. Use Value: 42 mA output current sustains 1 VP-P into 75 Ω; 85 MHz GBW preserves >5 MHz video bandwidth with <0.1 dB flatness. |
| Rail-to-Rail Sensor Interface | Active Filter Stage |
Use Scenario: Amplifying output of a 0–2.5 V pressure transducer in an automotive cabin control module operating from 5 V battery rail. IC Role / Device Role / Timing Role: Precision non-inverting gain stage with zero-input-offset-critical DC accuracy and immunity to supply variation. Use Value: Input common-mode range includes 0 V and 5 V rails - eliminates need for input bias resistors; 90 dB PSRR rejects engine-bay supply noise. | Use Scenario: Implementing a 4th-order Butterworth low-pass filter at 1 MHz cutoff in a medical ultrasound receive path. IC Role / Device Role / Timing Role: Dual-channel unity-gain stable amplifier for Sallen-Key topology with minimal phase shift and group delay variation. Use Value: 100 V/µs slew rate prevents waveform distortion on 1 MHz square-wave test signals; 2.5 pF input capacitance minimizes Q-factor degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8642ARZ | Lower slew rate (35 V/µs), lower noise (12 nV/√Hz), higher precision (60 µV max VOS), same SO-8 package | Better for DC-critical, low-noise sensor front-ends; insufficient for >5 MHz signal paths | Select AD8642ARZ when DC accuracy and low-frequency noise dominate; avoid for video or fast ADC driving |
| OPA2350UA | Higher slew rate (38 V/µs), wider supply (2.7–5.5 V), smaller SOT-23-8 package, no DFN option | Optimized for space-constrained portable designs; limited to 5.5 V max supply | Select OPA2350UA for battery-powered handheld instruments; not suitable for 12 V or ±5 V systems |
Compared with AD8642ARZ and OPA2350UA, LT1804CS8#PBF uniquely balances 100 V/µs speed, rail-to-rail I/O, and 2.3–12.6 V supply flexibility - making it the only choice among the three for 3.3 V–12 V high-fidelity analog signal chains requiring both speed and DC precision.
Availability
LT1804CS8#PBF is available at Aetrix Electronics and suitable for ADC driver circuits, video signal conditioning, rail-to-rail sensor interfaces, and active filter designs requiring stable component supply across industrial and medical OEM programs.
Supply support for LT1804CS8#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, emphasizing precision, speed, and reliability in signal chain components.
The LT1803/LT1804/LT1805 family was designed specifically for demanding low-voltage, high-bandwidth applications - including data acquisition, imaging, and communications - where rail-to-rail operation and low distortion are mandatory.
FAQ
What is the maximum supply voltage rating for LT1804CS8#PBF?
The absolute maximum total supply voltage (V+ to V–) for LT1804CS8#PBF is 12.6 V. Operation beyond this risks permanent damage. The device is fully specified from 2.3 V to 12.6 V, including ±5 V (10 V total) and 3.3 V single-supply configurations. Always observe derating guidelines for junction temperature when operating near absolute maximum ratings.
Does LT1804CS8#PBF support true rail-to-rail input common-mode range?
Yes, LT1804CS8#PBF supports true rail-to-rail input common-mode range from VS– to VS+, verified across all supply conditions (3 V, 5 V, ±5 V). This is achieved via dual-input-stage architecture (PNP + NPN), allowing seamless transition between input ranges without phase reversal or increased offset. Input can be driven beyond rails with current limiting to <10 mA.
What is the typical output voltage swing for LT1804CS8#PBF at 5 V supply?
At 5 V single supply (V– = 0 V, V+ = 5 V), LT1804CS8#PBF delivers typical output swing of 20 mV above V– and 20 mV below V+, i.e., 0.02 V to 4.98 V with no load. Under 5 mA source/sink load, swing degrades to 125–150 mV from each rail - still enabling >4.7 VP-P dynamic range in 5 V systems.
Is LT1804CS8#PBF pin-compatible with other dual op amps in SO-8 package?
LT1804CS8#PBF uses the industry-standard dual op amp pinout (pin 1 = OUT A, pin 2 = –IN A, pin 3 = +IN A, pin 4 = V–, pin 5 = +IN B, pin 6 = –IN B, pin 7 = OUT B, pin 8 = V+), matching LM358, TL072, and AD86xx families. However, electrical behavior (e.g., rail-to-rail I/O, 100 V/µs slew) differs significantly - PCB layout is compatible, but circuit validation is required.
What thermal considerations apply to LT1804CS8#PBF in SO-8 package?
LT1804CS8#PBF in SO-8 has θJA = 190°C/W. At 6 mA total supply current and 5 V supply, worst-case power dissipation is ~30 mW per amplifier. With 25°C ambient, junction temperature stays ~83°C - well below 150°C max. For continuous 42 mA output, add copper pour and consider thermal vias; do not exceed 125°C junction for long-term reliability.
LT1804CS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 100V/µs
- Gain Bandwidth Product:
- 83 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2.5 µA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 2.5mA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- 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
LT1804CS8#PBF FAQ
1.How can I place an order for LT1804CS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1804CS8#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 LT1804CS8#PBF reliable?
The price and inventory of LT1804CS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1804CS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1804CS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1804CS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1804CS8#PBF?
LT1804CS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1804CS8#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 LT1804CS8#PBF?
For technical support, including LT1804CS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1804CS8#PBF requirements.
6.How does Aetrix verify that LT1804CS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1804CS8#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 LT1804CS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1804CS8#PBF?
All LT1804CS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1804CS8#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 LT1804CS8#PBF part is unused and in its original packaging.
Return procedure for LT1804CS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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