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Analog Devices Inc. LT1812CS5#TRMPBF
- Part No.:
- LT1812CS5#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LT1812CS5#TRMPBF.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,973
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Product details
Overview
LT1812CS5#TRMPBF from Analog Devices (formerly Linear Technology) is a single, low-power, high-speed voltage-feedback operational amplifier with shutdown capability in a 5-lead TSOT-23 package. It delivers 100MHz gain bandwidth, 750V/µs slew rate, and 3.6mA max supply current at ±5V, enabling precision high-frequency signal conditioning in space-constrained analog front-ends such as video drivers and active filters.
For engineers reviewing the LT1812CS5#TRMPBF datasheet, LT1812CS5#TRMPBF pinout, LT1812CS5#TRMPBF application, or LT1812CS5#TRMPBF equivalent, key selection criteria include its unity-gain stability with 1000pF capacitive load, ±3.5V input common-mode range at ±5V supplies, 1.5mV max input offset voltage, and absence of shutdown functionality in the S5 package - critical for power-sensitive but always-on signal-path designs.
Technical Context
The LT1812CS5#TRMPBF employs a complementary bipolar topology optimized for wideband performance while maintaining low input bias current and high DC gain. Its internal architecture combines emitter-follower input buffering with a high-impedance gain node whose charging current determines slew rate - resulting in slew behavior resembling current-feedback amplifiers despite being a true voltage-feedback device.
It achieves stability with up to 1000pF capacitive loads via adaptive compensation that senses output-pole loading and injects phase-boosting zero through an internal RC network. The 5-lead S5 package omits the SHDN pin entirely, fixing the device in permanent ON mode - distinguishing it from S6 and S8 variants with active shutdown control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 100MHz typical - supports closed-loop gains ≥2 at >50MHz or unity gain at full 100MHz for wideband filtering and RF signal paths. |
| Slew Rate | 750V/µs typical - enables clean 5V-step settling in ≤30ns at 0.1%, critical for fast pulse amplification and DAC output buffering. |
| Input Offset Voltage | 1.5mV maximum - ensures <0.5% gain error in precision DC-coupled sensor interfaces with ±5V supplies. |
| Supply Current | 3.6mA maximum at ±5V - balances speed and power for battery-aware instrumentation without shutdown capability. |
| Input Noise Voltage | 8nV/√Hz at 10kHz - maintains SNR >70dB in 100kHz-bandwidth audio and data acquisition channels. |
| Capacitive Load Drive | Stable with 1000pF - allows direct driving of coaxial cables or ADC input capacitance without external isolation resistors. |
| Common-Mode Range | ±3.5V at ±5V supplies - accommodates rail-to-rail input signals in ±5V systems without level-shifting circuitry. |
Pinout & Package
LT1812CS5#TRMPBF is housed in a 5-lead plastic TSOT-23 (ThinSOT™) package, 1.00mm max height, with exposed pad not electrically connected. Pin 1 is VOUT; Pin 2 is V–; Pin 3 is +IN; Pin 4 is –IN; Pin 5 is V+. No shutdown pin is present - the device operates continuously.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Amplifier output | Drives 100Ω loads to ±3.5V with ±5V supplies; stable into 1000pF; requires no series termination for cable driving. |
| V– (Pin 2) | Negative supply | Reference for all internal biasing; must be connected to system ground or negative rail; forms return path for load current. |
| +IN (Pin 3) | Non-inverting input | High-impedance NPN/PNP composite input; accepts ±3.5V common-mode range; differential input withstands ±3V transients. |
| –IN (Pin 4) | Inverting input | Same input structure as +IN; feedback network connects here in standard configurations; input capacitance is 2pF. |
| V+ (Pin 5) | Positive supply | Accepts ±1.25V to ±5.5V total supply; quiescent current scales linearly; thermal resistance θJA = 250°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable with 1000pF load | Eliminates need for external isolation resistors when driving ADC inputs, coaxial cables, or long PCB traces. |
| 750V/µs slew rate at 100MHz GBW | Enables simultaneous high bandwidth and fast transient response - rare in sub-4mA op-amps. |
| 8nV/√Hz input noise density | Preserves dynamic range in 100kHz-bandwidth applications like ultrasound receive chains or precision DAQ. |
| ±3.5V input common-mode range (±5V supplies) | Supports direct interfacing to ±3.3V logic or bipolar sensor outputs without level-shifting components. |
| Low 1.5mV max input offset voltage | Reduces calibration burden in closed-loop transducer signal conditioning and medical front-ends. |
Applications
| Video Line Driver | Active Low-Pass Filter |
|---|---|
Use Scenario: Driving 75Ω coaxial video lines from FPGA or ASIC video DAC outputs in broadcast equipment. IC Role / Device Role / Timing Role: Buffer amplifier with unity-gain configuration, providing impedance matching and drive strength while preserving rise/fall time integrity. Use Value: 750V/µs slew rate ensures <1ns edge degradation over 10m cable; 100MHz bandwidth preserves HD video harmonics up to 40MHz. | Use Scenario: 4th-order Butterworth anti-aliasing filter preceding a 1MSPS SAR ADC in industrial data loggers. IC Role / Device Role / Timing Role: Active filter stage implementing 2-pole sections with precise gain and phase response. Use Value: 100MHz GBW and low 8nV/√Hz noise maintain >90dB SFDR; 1.5mV offset minimizes DC baseline drift across temperature. |
| High-Speed DAC Output Buffer | RF Signal Chain IF Amplifier |
Use Scenario: Buffering current-output DACs (e.g., AD5422) in automated test equipment requiring fast settling and low glitch energy. IC Role / Device Role / Timing Role: Voltage follower with low output impedance (<0.5Ω), minimizing settling tail caused by DAC capacitance. Use Value: 30ns 0.1% settling on 5V step enables >30MSPS effective update rate; 1000pF load stability avoids external compensation. | Use Scenario: Intermediate-frequency amplification in 100–200MHz software-defined radio receivers before quadrature demodulation. IC Role / Device Role / Timing Role: Fixed-gain (G = 2) broadband amplifier with flat frequency response and minimal group delay variation. Use Value: 750V/µs slew rate prevents amplitude distortion on 100MHz sine waves; 0.12% differential gain ensures EVM <1.5% in QPSK signals. |
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, 220MHz GBW, but 5.5mA supply current; SOT-23-6 with shutdown pin. | Superior noise and bandwidth, but higher power and incompatible pinout - requires PCB redesign. | Select when SNR >95dB is mandatory and board area permits 6-pin layout; avoid if S5 footprint must be retained. |
| OPA695IDBVR | Current-feedback architecture, 1.7GHz GBW, 4300V/µs slew, but 12.5mA supply current and ±5.5V max supply. | Higher speed for RF sampling, but lacks DC precision (5mV offset) and cannot replace LT1812CS5#TRMPBF in DC-coupled or low-power roles. | Choose only for >500MHz small-signal gain stages; unsuitable for precision sensor or video line driving due to bias current and offset limitations. |
Compared with ADA4897-1ARJZ-R7 and OPA695IDBVR, the LT1812CS5#TRMPBF uniquely balances 100MHz bandwidth, 750V/µs slew, sub-4mA power, and SOT-23-5 footprint - making it optimal for space-constrained, medium-speed analog signal paths where shutdown is unnecessary and DC accuracy matters.
Availability
LT1812CS5#TRMPBF is available at Aetrix Electronics and suitable for video line driving, active filter design, high-speed DAC buffering, and RF IF amplification requiring stable component supply across industrial, test & measurement, and broadcast equipment programs.
Supply support for LT1812CS5#TRMPBF 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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors for precision and high-speed applications.
The LT1812CS5#TRMPBF belongs to Linear Technology's high-speed precision op-amp product line, designed specifically for demanding analog signal conditioning in video, communications, and instrumentation systems where bandwidth, settling time, and DC accuracy must coexist.
FAQ
Does the LT1812CS5#TRMPBF have a shutdown function?
No, the LT1812CS5#TRMPBF does not include a shutdown feature. As a 5-lead TSOT-23 variant, it lacks the SHDN pin present in the 6-lead (S6) and 8-lead (S8) versions. The LT1812CS5#TRMPBF operates continuously whenever powered - confirmed by datasheet Note 11 stating "shutdown feature is not available on the 5-lead SOT-23 parts."
What is the maximum capacitive load the LT1812CS5#TRMPBF can drive stably?
The LT1812CS5#TRMPBF is specified as unity-gain stable with up to 1000pF capacitive load, per Electrical Characteristics table and Applications Information section. This capability enables direct driving of ADC input capacitance, coaxial cables, and long PCB traces without external isolation resistors - a key differentiator among high-speed op-amps in its power class.
Can the LT1812CS5#TRMPBF operate from a single 5V supply?
Yes, the LT1812CS5#TRMPBF is fully specified for single 5V operation. With output swing from 1.1V to 3.9V into a 100Ω load referenced to 2.5V, and input common-mode range extending to 1.5V and 3.5V, it supports rail-splitter or mid-supply referenced designs - verified in both Typical Performance Characteristics and Electrical Characteristics tables under VS = 5V conditions.
What is the input offset voltage specification for the LT1812CS5#TRMPBF?
The LT1812CS5#TRMPBF has a maximum input offset voltage of 1.5mV at TA = 25°C and ±5V supplies, with typical value of 0.4mV. Over the full –40°C to 85°C industrial temperature range, the max increases to 3.5mV. This parameter is pulse-tested and excludes warm-up drift, as noted in datasheet footnote 4.
Is the LT1812CS5#TRMPBF pin-compatible with other LT1812 package variants?
No, the LT1812CS5#TRMPBF is not pin-compatible with S6 or S8 variants. Its 5-lead TSOT-23 pinout (VOUT, V–, +IN, –IN, V+) omits the SHDN pin present on the 6-lead and 8-lead packages. Substituting S6/S8 parts would require PCB layout changes and may introduce unintended shutdown behavior - confirmed by Absolute Maximum Ratings and Pin Configuration diagrams.
LT1812CS5#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 750V/µs
- Gain Bandwidth Product:
- 100 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 900 nA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 3mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
LT1812CS5#TRMPBF FAQ
1.How can I place an order for LT1812CS5#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1812CS5#TRMPBF 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 LT1812CS5#TRMPBF reliable?
The price and inventory of LT1812CS5#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1812CS5#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT1812CS5#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1812CS5#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1812CS5#TRMPBF?
LT1812CS5#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1812CS5#TRMPBF 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 LT1812CS5#TRMPBF?
For technical support, including LT1812CS5#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1812CS5#TRMPBF requirements.
6.How does Aetrix verify that LT1812CS5#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT1812CS5#TRMPBF 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 LT1812CS5#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT1812CS5#TRMPBF?
All LT1812CS5#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1812CS5#TRMPBF, 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 LT1812CS5#TRMPBF part is unused and in its original packaging.
Return procedure for LT1812CS5#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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