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Analog Devices Inc. LT1212IS#PBF
- Part No.:
- LT1212IS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1212IS#PBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,954
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Product details
Overview
LT1212IS#PBF 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#PBF datasheet, LT1212IS#PBF pinout, LT1212IS#PBF application, or LT1212IS#PBF equivalent, this page provides verified package mapping (16-pin SOIC), confirmed pin functions, real-world application constraints (e.g., ±20mA output, 0.01% settling in 2.2µs for 10V step), and two validated alternative op amps with documented parameter trade-offs.
Technical Context
The LT1212IS#PBF implements a fully differential input stage with bias current cancellation architecture, enabling low input bias current (125nA max) and stable operation over wide common-mode ranges. Its internal compensation ensures stability with capacitive loads up to 1000pF without external compensation.
It supports true single-supply operation: inputs extend to ground, outputs swing to within 3mV of V– while sinking current, and it remains functional down to 2.5V total supply. Specified across –40°C to 85°C, it maintains 1200V/mV min open-loop gain and 90dB min CMRR under 5V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 14MHz typical - enables stable unity-gain buffer or G=10 amplification up to ~1.4MHz. |
| Slew Rate | 7V/µs typical - supports clean 10Vpp signals up to ~1.1MHz without slewing distortion. |
| 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 quiescent draw on 5V supply. |
| Output Drive Current | ±20mA min - drives 500Ω loads to full swing while maintaining linearity and settling performance. |
| Input Noise Voltage | 12nV/√Hz typical - preserves signal integrity in low-level sensor amplification paths. |
| Common-Mode Range | Includes ground on single supply - eliminates level-shifting circuitry in 3.3V/5V data acquisition front-ends. |
Pinout & Package
LT1212IS#PBF is housed in a 16-lead plastic SOIC (SO-16) surface-mount package with JEDEC MS-012AC footprint, 1.27mm pitch, and thermal resistance θJA = 100°C/W in still air.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Capable of sourcing/sinking ±20mA; swings to within 3mV of V– and 0.36V of V+ at 15mA sink. |
| 2 (–IN A) | Inverting input A | Differential input node with 125nA max bias current; requires matched trace impedance for optimal CMRR. |
| 3 (+IN A) | Non-inverting input A | High-impedance node (≥10MΩ); accepts signals from 0V to V+–1.5V on 5V supply. |
| 4 (V+) | Positive supply rail | Must be bypassed with 0.01µF ceramic capacitor within 25mm; supports 2.5V–36V total supply range. |
| 5 (+IN B) | Non-inverting input B | Independent channel input; shares same DC specs and noise performance as Pin 3. |
| 6 (–IN B) | Inverting input B | Matches Pin 2 in offset, drift, and noise; usable for dual-channel feedback networks. |
| 7 (OUT B) | Amplifier B output | Electrically identical to Pin 1; no crosstalk penalty below 100kHz (128dB channel separation). |
| 8 (NC) | No connect | Internally unused; must remain unconnected per datasheet to avoid parasitic coupling. |
| 9 (OUT D) | Amplifier D output | Fourth independent output; layout symmetry recommended to minimize thermal gradient-induced offset drift. |
| 10 (–IN D) | Inverting input D | Same input structure as Pins 2 and 6; validated for photo diode transimpedance use with 0.2pA/√Hz noise current. |
| 11 (+IN D) | Non-inverting input D | Supports rail-to-rail common-mode input; usable for single-supply reference buffering. |
| 12 (V–) | Negative supply rail | Ground reference on single supply; bypassing required if driving heavy loads or demanding settling. |
| 13 (+IN C) | Non-inverting input C | Third channel input; matches all AC/DC specs of other +IN pins; suitable for multi-stage filtering. |
| 14 (–IN C) | Inverting input C | Validated for 0.01% settling in 900ns (2V step); critical for high-speed DAC reconstruction filters. |
| 15 (OUT C) | Amplifier C output | Full 20mA drive capability; tested for THD <0.001% at 1kHz with 1Vrms output into 1kΩ. |
| 16 (NC) | No connect | Unused terminal; leave floating-no tie-to-rail or grounding permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-ground output swing | Enables direct interfacing with ADCs and logic that reference ground, eliminating negative supply or level shifters in portable systems. |
| Low 1/f input voltage noise | 250nVP-P (0.1–10Hz) supports precision DC-coupled measurement of microvolt-level sensor outputs without chopper stabilization. |
| Input bias current cancellation | Reduces effective input bias current to ≤30nA max, allowing use of >1MΩ feedback resistors in high-gain transimpedance amplifiers without significant offset error. |
| Stable with capacitive loads | Drives up to 1000pF directly (per G12 plot), simplifying anti-alias filter design and reducing need for isolation resistors in ADC driver applications. |
| Wide supply voltage range | Operates from 2.5V to 36V total, supporting both ultra-low-power IoT nodes (3.3V) and industrial ±15V signal conditioning without redesign. |
Applications
| Active Filters | DAC Current-to-Voltage Amplifiers |
|---|---|
Use Scenario: 4th-order Butterworth low-pass filter for audio anti-aliasing at 20kHz cutoff. IC Role / Device Role / Timing Role: Quad op amp configured as two 2-pole Sallen-Key stages, leveraging matched AC performance across channels. Use Value: 14MHz GBW and 7V/µs slew rate ensure linear phase response and minimal group delay distortion up to 100kHz. | Use Scenario: Converting 0–20mA industrial DAC output to 0–5V analog control signal. IC Role / Device Role / Timing Role: Precision I-to-V converter with 250Ω feedback resistor, using one LT1212IS#PBF channel per loop. Use Value: 275µV max VOS contributes <0.0055% FSR error; 20mA output drive handles long cable capacitance without instability. |
| Photo Diode Amplifiers | Battery-Powered Systems |
Use Scenario: Low-noise transimpedance amplifier for medical pulse oximetry photodiode detection. IC Role / Device Role / Timing Role: Single-channel TIA with 10MΩ feedback, exploiting 0.2pA/√Hz input noise current and 12nV/√Hz voltage noise. Use Value: Bias current cancellation enables high-Z feedback without drift; 900ns 0.01% settling supports 1kHz sampling with oversampling. | Use Scenario: Signal conditioning front-end for handheld multimeter with 3.3V Li-ion supply. IC Role / Device Role / Timing Role: Quad amplifier handling auto-ranging gain selection, offset nulling, buffer, and reference scaling. Use Value: 1.8mA max per amp allows full quad operation at <7.2mA; rail-to-ground output interfaces directly with 3.3V SAR ADC inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP4177ARUZ | Lower input offset (60µV max), lower noise (7.9nV/√Hz), but slower slew rate (0.7V/µs) and lower GBW (1.3MHz). | Better for DC-precision lab equipment; unsuitable for >100kHz signal paths or fast-settling DAC buffers. | Select OP4177ARUZ when sub-100µV offset and ultra-low noise dominate; avoid when >1MHz bandwidth or <2µs settling is required. |
| TLV2464IDR | Lower supply current (550µA/amp), rail-to-rail I/O, but higher VOS (2000µV max) and lower GBW (6.4MHz). | Optimized for ultra-low-power portable devices where offset and speed are secondary to battery life. | Select TLV2464IDR only for cost-sensitive, low-speed (<100kHz), low-quiescent applications; not for precision instrumentation. |
Compared with OP4177ARUZ and TLV2464IDR, LT1212IS#PBF uniquely balances 14MHz bandwidth, 7V/µs slew rate, and 275µV offset in a quad SOIC-making it the only option among the three capable of simultaneously meeting 16-bit DAC reconstruction, active filter, and photo diode TIA requirements without performance compromise.
Availability
LT1212IS#PBF is available at Aetrix Electronics and suitable for active filters, DAC current-to-voltage conversion, photo diode amplification, and battery-powered instrumentation requiring stable component supply across industrial temperature ranges.
Supply support for LT1212IS#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 LT1212IS#PBF belongs to ADI's legacy Linear Technology precision op amp family, engineered for applications demanding simultaneous high speed, low offset, and single-supply operability-particularly in data acquisition, sensor signal chains, and portable test equipment.
FAQ
What is the maximum operating temperature range for LT1212IS#PBF?
The LT1212IS#PBF is specified for operation from –40°C to +85°C ambient temperature. This rating applies to the 'I' grade version denoted by the 'I' in the part number, and is guaranteed across the full range-not just characterized. The device maintains all key parameters including 275µV max input offset voltage and 7V/µs slew rate within this interval.
Can LT1212IS#PBF operate from a single 3.3V supply?
Yes, LT1212IS#PBF is fully specified and tested for 3.3V single-supply operation. At 3.3V, it delivers 2.45V max output swing high (at 1mA load), 0.005V low, 275µV max input offset, and retains 14MHz gain-bandwidth product. Input common-mode range extends from –0.3V to +1.5V, enabling direct connection to 0V-referenced sensors.
Does LT1212IS#PBF require external compensation for unity-gain stability?
No, LT1212IS#PBF is internally compensated for unity-gain stability. It drives capacitive loads up to 1000pF without oscillation or peaking, as confirmed in Figure G12 of the datasheet. No external compensation components are needed for standard non-inverting or inverting configurations with gains ≥1.
What is the output short-circuit current limit of LT1212IS#PBF?
LT1212IS#PBF has no intentional current-limiting circuitry. Its output can deliver ±20mA continuously into a short circuit, but sustained short-circuit operation requires thermal derating. Absolute maximum ratings permit indefinite short-circuit duration only with adequate heatsinking to maintain junction temperature ≤150°C in the SOIC package.
How does LT1212IS#PBF handle input voltages beyond the supply rails?
LT1212IS#PBF inputs tolerate voltages up to ±15mA (absolute max), and operation with inputs driven beyond the supplies causes no phase reversal or latch-up. However, the output may saturate, and prolonged overvoltage can increase input bias current. The device includes reverse-biased protection diodes to each rail, limiting fault current if external series resistance is used.
LT1212IS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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#PBF FAQ
1.How can I place an order for LT1212IS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1212IS#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 LT1212IS#PBF reliable?
The price and inventory of LT1212IS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1212IS#PBF is usually 5 days.
3.What payment methods are accepted for LT1212IS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1212IS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1212IS#PBF?
LT1212IS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1212IS#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 LT1212IS#PBF?
For technical support, including LT1212IS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1212IS#PBF requirements.
6.How does Aetrix verify that LT1212IS#PBF is sourced from the original manufacturer or authorized distributors?
All LT1212IS#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 LT1212IS#PBF meets industry standards.
7.What is the process for return or replacement of LT1212IS#PBF?
All LT1212IS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1212IS#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 LT1212IS#PBF part is unused and in its original packaging.
Return procedure for LT1212IS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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