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Analog Devices Inc. LT1212CS#PBF
- Part No.:
- LT1212CS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1212CS#PBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,187
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Product details
Overview
LT1212CS#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 LT1212CS#PBF datasheet, LT1212CS#PBF pinout, LT1212CS#PBF application, or LT1212CS#PBF equivalent, key selection criteria include guaranteed 0.01% settling time of 900ns (2V step), low 12nV/√Hz input noise, ±15V/5V/3.3V supply compatibility, and SO-16 surface-mount packaging suitable for space-constrained industrial signal conditioning designs.
Technical Context
The LT1212CS#PBF implements a fully differential input stage with bias current cancellation architecture, enabling low input offset current (30nA max) and stable DC performance across temperature. Its internal compensation ensures unity-gain stability with capacitive loads up to 1000pF without external compensation.
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 sensor interfaces. The device maintains 102dB PSRR and 105dB CMRR over its –40°C to 85°C operating range, ensuring robustness in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 14MHz typical - enables stable closed-loop operation up to 1MHz with gain ≥14. |
| 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, ideal for portable devices. |
| Output Drive Current | ±20mA min - drives 500Ω loads directly without external buffers in transimpedance stages. |
| Input Noise Density | 12nV/√Hz @1kHz - preserves SNR in low-level photodiode or strain gauge amplification. |
| Common-Mode Range | Includes ground on single supply - simplifies level-shifting in 3.3V/5V microcontroller interfacing. |
| Settling Time (0.01%) | 900ns for 2V step - meets timing requirements in high-speed data acquisition front-ends. |
Pinout & Package
LT1212CS#PBF is housed in a 16-lead plastic SOIC (SO-16) package with standard JEDEC MS-012AC footprint, 1.27mm pitch, and 10.3mm × 7.5mm body size. 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 into resistive or capacitive loads. |
| 2 | –IN A | Inverting input of Amp A - high-impedance node (<40MΩ) for precision feedback networks. |
| 3 | +IN A | Non-inverting input of Amp A - accepts signals down to ground on single supply. |
| 4 | V+ | Positive supply rail - requires local 0.01µF ceramic bypass within 25mm. |
| 5 | +IN B | Non-inverting input of Amp B - electrically isolated from other inputs; no crosstalk. |
| 6 | –IN B | Inverting input of Amp B - matched offset and bias characteristics to Amp A. |
| 7 | OUT B | Amplifier B output - identical drive capability and settling behavior as OUT A. |
| 8 | NC | No connect - internally unused; must remain unconnected per datasheet. |
| 9 | OUT D | Amplifier D output - fourth independent channel; shares same electrical specs as OUT A. |
| 10 | –IN D | Inverting input of Amp D - part of quad topology with matched thermal tracking. |
| 11 | +IN D | Non-inverting input of Amp D - supports rail-to-rail input on single supply. |
| 12 | V– | Negative supply rail - connects to ground in single-supply configurations. |
| 13 | +IN C | Non-inverting input of Amp C - enables simultaneous multi-channel sensing. |
| 14 | –IN C | Inverting input of Amp C - matched to other inputs for consistent common-mode rejection. |
| 15 | OUT C | Amplifier C output - fully independent channel with same AC/DC performance. |
| 16 | NC | No connect - not bonded; leave floating or grounded per layout best practices. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-ground output swing | Outputs sink to within 3mV of V–, enabling true zero-volt output in single-supply 3.3V/5V systems. |
| Low input bias current cancellation | 125nA max input bias with 30nA max offset current - minimizes voltage errors in high-Z sensor interfaces. |
| Wide supply range | Operates from 2.5V to 36V total - supports legacy ±15V, modern 5V, and ultra-low-power 3.3V designs without redesign. |
| Fast 0.01% settling | 900ns for 2V step - reduces acquisition dead time in multiplexed ADC front-ends. |
| High PSRR/CMRR | 110dB PSRR and 105dB CMRR - rejects power rail noise and common-mode interference in industrial PLC I/O modules. |
| Quad channel isolation | 128dB channel separation at 1kHz - prevents crosstalk in multi-signal conditioning applications like medical ECG front-ends. |
Applications
| Active Filters | DAC Current-to-Voltage Amplifiers |
|---|---|
Use Scenario: Second-order Sallen-Key low-pass filter in audio anti-aliasing path with 100kHz cutoff. IC Role / Device Role / Timing Role: Quad op amp configured as two independent filter sections (A+B), leveraging matched AC performance for phase coherence. Use Value: 14MHz GBW ensures >60dB stopband attenuation at 1MHz; 7V/µs slew rate prevents distortion on 2Vpp audio peaks. | Use Scenario: Converting 4–20mA process current loop output to 0–5V analog signal for PLC analog input card. IC Role / Device Role / Timing Role: Precision transimpedance amplifier (TIA) with 250Ω feedback resistor, using Amp A. Use Value: 275µV max VOS contributes <0.0055% full-scale error; 20mA drive handles 500Ω load including cable impedance. |
| Photo Diode Amplifiers | Battery-Powered Systems |
Use Scenario: Low-noise TIA for silicon photodiode in portable spectrometer detecting µA-level photocurrents. IC Role / Device Role / Timing Role: Single amplifier (Amp C) in transimpedance configuration with guarded input and low-noise layout. Use Value: 12nV/√Hz input voltage noise dominates over photodiode Johnson noise below 10kHz; 0.2pA/√Hz current noise minimizes dark-current contribution. | Use Scenario: Signal conditioning front-end for 3.3V Li-ion powered gas sensor array with 12-bit ADC. IC Role / Device Role / Timing Role: Quad amplifier providing simultaneous gain, filtering, reference buffering, and level-shifting across four sensor channels. Use Value: 1.8mA max per amp enables full quad operation at <7.2mA total quiescent current; 2.5V minimum supply extends runtime near battery depletion. |
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 |
|---|---|---|---|
| OP4177ARZ | Lower 0.3µV/°C drift vs. LT1212CS#PBF's 6µV/°C; 2.8MHz GBW vs. 14MHz; 0.7V/µs slew rate. | Better long-term DC stability in precision weigh scales; insufficient bandwidth for >200kHz active filters. | Select OP4177ARZ when ultra-low drift dominates over speed; avoid where >1MHz closed-loop bandwidth required. |
| TLV2464CDR | Lower 1.2mA supply current vs. 1.8mA max; 6.4MHz GBW; rail-to-rail I/O; 2.5V min supply. | Superior power efficiency in always-on IoT sensors; lower drive (15mA) limits low-Z load capability. | Select TLV2464CDR for battery life-critical sub-1MHz applications; avoid for driving 500Ω loads or fast settling. |
Compared with OP4177ARZ and TLV2464CDR, the LT1212CS#PBF uniquely balances high-speed precision (14MHz/7V/µs) with single-supply usability and robust output drive-making it optimal for industrial data acquisition where both bandwidth and DC accuracy are non-negotiable.
Availability
LT1212CS#PBF is available at Aetrix Electronics and suitable for industrial automation, test equipment, and medical instrumentation requiring stable component supply, long-lifecycle support, and guaranteed parametric compliance across temperature.
Supply support for LT1212CS#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 LT1212CS#PBF belongs to ADI's legacy Linear Technology precision op amp family, engineered for applications demanding simultaneous high DC accuracy, wide bandwidth, and single-supply operability in harsh environments.
FAQ
What is the maximum supply voltage for LT1212CS#PBF?
The LT1212CS#PBF supports a total supply voltage range of 2.5V to 36V. In dual-supply mode, this translates to ±18V maximum; in single-supply mode, V+ can be up to 36V with V– tied to ground. Absolute maximum rating is 36V between V+ and V– pins, beyond which permanent damage may occur.
Does LT1212CS#PBF support true rail-to-rail input?
No, the LT1212CS#PBF does not feature rail-to-rail input. Its input common-mode range extends to ground (V–) but stops approximately 1.5V below V+ on single supply (e.g., 3.5V max at V+ = 5V). However, it does provide rail-to-ground output swing while sinking current-a key advantage for single-supply sensor interfaces.
Can LT1212CS#PBF drive a 500Ω load at ±10V output swing?
Yes, the LT1212CS#PBF guarantees ±20mA minimum output current per amplifier, enabling ±10V swing into a 500Ω load (requiring ±20mA). At ±15V supplies, it delivers ±14.4V to ±14.6V output swing while sinking/source 15mA, confirming robust drive capability for moderate-impedance loads without external buffers.
What is the guaranteed operating temperature range for LT1212CS#PBF?
The LT1212CS#PBF is specified and tested over –40°C to +85°C ambient temperature. This is the C-grade industrial temperature range. While the device may function outside this range, only parameters listed in the "LT1212C" column of the datasheet are guaranteed across this full interval.
Is LT1212CS#PBF pin-compatible with other quad op amps like LM324?
No, LT1212CS#PBF is not pin-compatible with LM324 or other legacy quad op amps. Its SO-16 pinout follows Linear Technology's proprietary layout (e.g., V+ on Pin 4, V– on Pin 12), differing from LM324's PDIP/SO-14 pin mapping. PCB redesign is required for substitution; refer to the official LT1212CS#PBF pin diagram for routing.
LT1212CS#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
LT1212CS#PBF FAQ
1.How can I place an order for LT1212CS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1212CS#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 LT1212CS#PBF reliable?
The price and inventory of LT1212CS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1212CS#PBF is usually 5 days.
3.What payment methods are accepted for LT1212CS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1212CS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1212CS#PBF?
LT1212CS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1212CS#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 LT1212CS#PBF?
For technical support, including LT1212CS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1212CS#PBF requirements.
6.How does Aetrix verify that LT1212CS#PBF is sourced from the original manufacturer or authorized distributors?
All LT1212CS#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 LT1212CS#PBF meets industry standards.
7.What is the process for return or replacement of LT1212CS#PBF?
All LT1212CS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1212CS#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 LT1212CS#PBF part is unused and in its original packaging.
Return procedure for LT1212CS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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