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Analog Devices Inc. LT1212IS#TRPBF
- Part No.:
- LT1212IS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1212IS#TRPBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,689
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Product details
Overview
LT1212IS#TRPBF from Analog Devices (formerly Linear Technology) is a quad precision operational amplifier optimized for single-supply operation with 14MHz gain-bandwidth product, 7V/µs slew rate, and rail-to-rail output swing to ground while sinking current. It delivers 20mA minimum output drive, 275µV max input offset voltage at 25°C, and operates from 2.5V to 36V total supply. It is used in battery-powered instrumentation, DAC current-to-voltage conversion, and active filter stages requiring high DC accuracy and fast settling.
For engineers reviewing the LT1212IS#TRPBF datasheet, LT1212IS#TRPBF pinout, LT1212IS#TRPBF application, or LT1212IS#TRPBF equivalent, key selection considerations include its guaranteed –40°C to +85°C industrial temperature range, SO-16 surface-mount package, low 1.8mA max supply current per amplifier, and compatibility with 3.3V, 5V, and ±15V supplies without performance degradation.
Technical Context
The LT1212IS#TRPBF implements a bipolar input stage with bias current cancellation architecture, enabling low input bias current (125nA max) and low input offset current (30nA max). Its internal compensation ensures stable unity-gain operation with capacitive loads up to 1000pF.
It supports true single-supply operation: input common-mode range extends to ground, and output swings to within 3mV of V– while sinking current - critical for low-voltage signal conditioning. The device maintains 1200V/mV min open-loop gain and 90dB min CMRR across its full operating temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 14MHz typical - enables stable closed-loop operation up to ~1MHz at gain ≥10. |
| Slew Rate | 7V/µs typical - supports clean 10V step response settling to 0.01% in 2.2µs. |
| Input Offset Voltage | 275µV max at 25°C - ensures ≤1.8LSB error in 10V full-scale 16-bit systems. |
| Supply Current per Amp | 1.8mA max - allows four-channel operation at <7.2mA total, ideal for power-constrained designs. |
| Output Drive Current | ±20mA min - drives 500Ω loads directly without external buffers. |
| Input Noise Voltage | 12nV/√Hz typical - preserves SNR in low-level sensor amplification stages. |
| Common-Mode Range | Includes ground on single supply - simplifies level-shifting in 3.3V/5V microcontroller interfaces. |
Pinout & Package
LT1212IS#TRPBF is housed in a 16-lead plastic SOIC (SO-16) surface-mount package with standard JEDEC MS-013AC footprint and 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - capable of sourcing/sinking ±20mA, swings to within 3mV of V–. |
| 2 | –IN A | Inverting input of Amp A - high-impedance node; bias current ≤125nA. |
| 3 | +IN A | Non-inverting input of Amp A - referenced to ground or common-mode voltage. |
| 4 | V+ | Positive supply rail - accepts 2.5V to 36V total supply; bypass with 0.01µF near pin. |
| 5 | +IN B | Non-inverting input of Amp B - electrically isolated; shares no internal nodes with Amp A. |
| 6 | –IN B | Inverting input of Amp B - independent channel; supports separate feedback networks. |
| 7 | OUT B | Amplifier B output - identical drive capability and rail-swing behavior as OUT A. |
| 8 | NC | No connect - not internally bonded; left floating or grounded per layout best practice. |
| 9 | OUT D | Amplifier D output - fourth independent output; matches performance of OUT A/B/C. |
| 10 | –IN D | Inverting input of Amp D - fully isolated; enables independent signal paths. |
| 11 | +IN D | Non-inverting input of Amp D - supports differential or single-ended configurations. |
| 12 | V– | Negative supply rail - connects to ground in single-supply mode; must be bypassed. |
| 13 | +IN C | Non-inverting input of Amp C - third channel input; no crosstalk with other amps. |
| 14 | –IN C | Inverting input of Amp C - supports individual gain-setting resistors per channel. |
| 15 | OUT C | Amplifier C output - fourth channel output; identical specs to other outputs. |
| 16 | NC | No connect - unused pad; no internal connection; avoid routing signals here. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-ground output swing | Outputs sink to within 3mV of V–, enabling true zero-Vout capability in single-supply 3.3V/5V systems. |
| Low input offset drift | 6µV/°C max - minimizes calibration drift over industrial temperature range (–40°C to +85°C). |
| Bias current cancellation | Reduces effective input bias current to ≤125nA, permitting use of MΩ-range feedback resistors without gain error. |
| Wide supply flexibility | Operates from 2.5V to 36V total supply - supports 3.3V logic, 5V legacy, and ±15V precision analog rails. |
| Fast 0.01% settling | 2.2µs for 10V step - meets timing requirements in multiplexed data acquisition and fast DAC buffering. |
Applications
| Active Filters | DAC Current-to-Voltage Conversion |
|---|---|
Use Scenario: Second-order Sallen-Key low-pass filter in portable medical sensor front-end. IC Role / Device Role / Timing Role: Quad op-amp provides two independent filter stages plus reference buffer and signal gain in one package. Use Value: Eliminates inter-stage coupling errors and reduces board area by 60% vs discrete duals; 14MHz GBW ensures phase linearity up to 100kHz. | Use Scenario: Converting 12-bit DAC output current (e.g., AD5422) into precise unipolar voltage for actuator control. IC Role / Device Role / Timing Role: I-to-V transimpedance amplifier with 20mA output drive to handle load capacitance and cable impedance. Use Value: 275µV max VOS contributes <0.45LSB error at 2.5V full scale; rail-to-ground swing enables 0–2.5V output range. |
| Photo Diode Amplifiers | Battery-Powered Systems |
Use Scenario: Low-noise transimpedance amplifier for photodiode-based smoke detector. IC Role / Device Role / Timing Role: High-Z input stage with 12nV/√Hz noise density and 0.2pA/√Hz current noise for femtoampere-level detection. Use Value: Input bias current ≤125nA prevents diode leakage dominance; 1.8mA max supply current extends battery life in AA-powered units. | Use Scenario: Signal conditioning in handheld multimeter with 3.3V MCU and Li-ion battery (2.7–4.2V). IC Role / Device Role / Timing Role: Single-supply quad amplifier handling AC-coupled sensor inputs, reference buffering, and display driver interface. Use Value: Operates down to 2.5V total supply - remains functional even at end-of-battery; 7V/µs slew rate supports 1kHz auto-ranging updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1212CN | Same die, 14-pin PDIP package; higher θJA (70°C/W), wider –40°C to +85°C rating but no extended temp screening. | Through-hole assembly only; less suitable for space-constrained PCBs or automated SMT lines. | Select LT1212CN only for prototyping or legacy through-hole designs where reflow compatibility is not required. |
| OP4177ARUZ | Lower 1.3MHz GBW, 0.7V/µs slew rate, but superior 60µV max VOS and 0.3µV/°C drift; 5.5mA supply current per amp. | Better DC precision for weigh-scale or strain-gauge bridges; insufficient speed for >10kHz active filters or fast DAC settling. | Choose OP4177ARUZ when ultra-low offset and drift dominate over bandwidth; avoid for signal-chain stages requiring >1MHz closed-loop bandwidth. |
Compared with LT1212CN and OP4177ARUZ, LT1212IS#TRPBF uniquely balances high-speed precision (14MHz/7V/µs) with industrial-grade temperature stability and SO-16 SMT compatibility - making it optimal for volume production of compact, battery-aware instrumentation where both AC and DC performance matter.
Availability
LT1212IS#TRPBF is available at Aetrix Electronics and suitable for active filters, DAC current-to-voltage conversion, photo diode amplifiers, and battery-powered systems requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LT1212IS#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, formed through the acquisition of Linear Technology in 2017.
The LT1212IS#TRPBF belongs to Linear's legacy precision op-amp family designed for applications demanding simultaneous high DC accuracy, wide bandwidth, and robust single-supply operation - particularly in test equipment, industrial process control, and portable medical devices.
FAQ
What is the maximum supply voltage for LT1212IS#TRPBF?
The LT1212IS#TRPBF supports a total supply voltage range of 2.5V to 36V. This includes single-supply operation (e.g., 3.3V, 5V, or 30V) and split supplies (e.g., ±15V). Absolute maximum rating is 36V between V+ and V–; exceeding this risks permanent damage. Operation below 2.5V is possible but degrades input common-mode range and phase margin.
Does LT1212IS#TRPBF support rail-to-rail input?
No, the LT1212IS#TRPBF does not feature rail-to-rail input. Its input common-mode voltage range extends to ground (V–) on single supply but stops approximately 1.5V below V+ at room temperature - e.g., 0V to 3.5V on a 5V supply. This is sufficient for many ground-referenced sensor interfaces but requires level-shifting for signals near V+.
Can LT1212IS#TRPBF drive capacitive loads?
Yes, the LT1212IS#TRPBF is stable driving capacitive loads up to 1000pF in unity-gain configuration, as confirmed by manufacturer characterization. For loads >200pF, adding a small series resistor (10–50Ω) between the output and capacitive node improves phase margin and reduces overshoot without compromising settling time.
What is the thermal resistance (θJA) of the LT1212IS#TRPBF package?
The LT1212IS#TRPBF uses a 16-lead SOIC package with a junction-to-ambient thermal resistance (θJA) of 100°C/W under standard JEDEC JESD51-7 conditions (single-layer copper, 1-inch² pad). In high-density layouts with limited copper, actual θJA may rise to 120–150°C/W; derating calculations must use worst-case ambient and power dissipation to ensure TJ ≤ 150°C.
Is LT1212IS#TRPBF pin-compatible with other LT1212 variants?
Yes, all LT1212 variants - including LT1212IS#TRPBF (SO-16, industrial temp), LT1212CN (PDIP-14), and LT1212CS (SO-16, commercial temp) - share identical pinouts and electrical functionality. The LT1212IS#TRPBF differs only in temperature screening (–40°C to +85°C) and tape-and-reel packaging; no PCB redesign is needed when upgrading from LT1212CS or substituting for LT1212CN in SMT assembly.
LT1212IS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 7V/µs
- Gain Bandwidth Product:
- 14 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 nA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 1.8mA (x4 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
LT1212IS#TRPBF FAQ
1.How can I place an order for LT1212IS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1212IS#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 LT1212IS#TRPBF reliable?
The price and inventory of LT1212IS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1212IS#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1212IS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1212IS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1212IS#TRPBF?
LT1212IS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1212IS#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 LT1212IS#TRPBF?
For technical support, including LT1212IS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1212IS#TRPBF requirements.
6.How does Aetrix verify that LT1212IS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1212IS#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 LT1212IS#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1212IS#TRPBF?
All LT1212IS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1212IS#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 LT1212IS#TRPBF part is unused and in its original packaging.
Return procedure for LT1212IS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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