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Analog Devices Inc. LT1219LCS8#PBF
- Part No.:
- LT1219LCS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1219LCS8#PBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,125
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Product details
Overview
LT1219LCS8#PBF from Analog Devices (formerly Linear Technology) is a precision rail-to-rail input and output operational amplifier optimized for low-voltage, high-PSRR analog signal conditioning. It delivers 90µV max input offset voltage across full rail-to-rail common-mode range, 97dB min CMRR, 0.05V/µs slew rate, and operates from ±2.5V to ±5V supplies - ideal for driving 12-bit ADCs in battery-powered instrumentation.
For engineers reviewing the LT1219LCS8#PBF datasheet, LT1219LCS8#PBF pinout, LT1219LCS8#PBF application, or LT1219LCS8#PBF equivalent, key selection criteria include its C-load–stable architecture requiring 0.1µF output capacitor, shutdown current <30µA, and guaranteed performance at –40°C to +85°C with ±5V supply.
Technical Context
The LT1219LCS8#PBF uses dual-input-stage bipolar architecture with independent trimming at both supply rails to maintain 90µV VOS across V– to V+, enabling true rail-to-rail operation without offset degradation near supply rails. Its patented bias steering ensures seamless transition between PNP and NPN input stages.
Unlike the LT1218L, the LT1219L variant integrates internal compensation requiring an external 0.1µF output capacitor - this improves PSRR by >20dB at 50kHz and reduces high-frequency output impedance, making it uniquely suited for mixed-signal systems sharing noisy digital supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (VOS) | 90µV max across full V– to V+ common-mode range - enables precision DC-coupled buffering without calibration. |
| Common-Mode Rejection Ratio (CMRR) | 97dB min (±5V, TA = 25°C) - rejects supply- and ground-borne interference in single-supply sensor interfaces. |
| Slew Rate | 0.05V/µs - supports stable unity-gain buffering of sub-10kHz signals with minimal distortion. |
| Supply Current | 420µA max (±5V) - enables always-on signal conditioning in ultra-low-power portable designs. |
| Shutdown Current | <30µA - allows dynamic power gating in multi-channel data acquisition systems. |
| Gain-Bandwidth Product | 0.15MHz - sufficient for anti-aliasing filters and precision gain stages up to G = 100. |
| Output Swing | V– + 4mV / V+ – 12mV (no load) - delivers full dynamic range into 12-bit ADCs with 0–5V reference. |
Pinout & Package
LT1219LCS8#PBF is housed in an 8-lead plastic SOIC (S8) package, 0.150" wide, with standard SOIC thermal and mechanical characteristics (θJA = 190°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOS TRIM) | Offset null adjustment | Connects to external 10kΩ potentiometer for fine-tuning input offset; optional for most precision applications. |
| 2 (–IN) | Inverting input | Differential input node active across full rail-to-rail common-mode range (V– to V+). |
| 3 (+IN) | Non-inverting input | Differential input node with same rail-to-rail common-mode capability as –IN. |
| 4 (V–) | Negative supply rail | Accepts –2.5V to –5V; supports true single-supply operation when tied to ground. |
| 5 (VOS TRIM) | Offset null adjustment (complementary) | Second trim terminal completing the offset null network; used with Pin 1. |
| 6 (V+) | Positive supply rail | Accepts +2.5V to +5V; powers internal bias circuitry including SHDN reference. |
| 7 (OUT) | Amplifier output | Rail-to-rail output stage requires 0.1µF capacitor to V– for stability and optimal PSRR. |
| 8 (SHDN) | Shutdown control | Active-low logic input referenced to V+; pulls supply current to <30µA when driven to V–. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interfacing with 0–5V ADC references and sensors without level-shifting circuitry. |
| Guaranteed 90µV VOS over full VCM | Eliminates need for system-level offset calibration in precision measurement front-ends. |
| C-load–stable compensation (0.1µF) | Improves PSRR by >20dB at 50kHz and lowers output impedance above 10kHz for cleaner ADC drive. |
| 97dB min CMRR | Rejects noise coupling from shared PCB traces or noisy digital supplies in mixed-signal layouts. |
| Shutdown mode (<30µA) | Supports channel-by-channel power management in multi-opamp data loggers and sensor arrays. |
Applications
| ADC Driver | Multiplexer Amplifier |
|---|---|
Use Scenario: Buffering sensor outputs before sampling by 12-bit SAR ADCs in portable medical devices. IC Role / Device Role / Timing Role: Precision unity-gain buffer with rail-to-rail swing and low THD+N to preserve SNR. Use Value: 90µV VOS and 97dB CMRR prevent code-dependent offset errors; 0.1µF C-load filter suppresses switching noise from shared LDO. |
Use Scenario: Channel-selection amplifier in 8-channel thermocouple data acquisition modules. IC Role / Device Role / Timing Role: Low-bias-current, fast-settling gain stage preceding multiplexer switch. Use Value: 18nA typical input bias current minimizes voltage error across high-impedance thermocouple sources; 20µs shutdown enable/disable allows per-channel power cycling. |
| Portable Instrumentation | Battery-Powered Sensor Interface |
Use Scenario: Front-end amplifier in handheld multimeters operating from 3.3V Li-ion supply. IC Role / Device Role / Timing Role: Rail-to-rail I/O op amp supporting 0–3.3V full-scale measurements. Use Value: 420µA supply current extends battery life; ±2.5V min supply enables operation down to 2.5V battery voltage. |
Use Scenario: Signal conditioning for MEMS pressure sensors in wireless IoT nodes. IC Role / Device Role / Timing Role: Low-noise, low-power gain block with shutdown control synchronized to RF transmit bursts. Use Value: Shutdown current <30µA cuts quiescent power during sleep; 33nV/√Hz input noise preserves sensor resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1219CS8#PBF | Wider supply range (±2.5V to ±15V); higher GBW (0.3MHz) and slew rate (0.1V/µs); no guaranteed –40°C to +85°C spec. | Used in industrial systems with ±15V supplies and higher bandwidth needs; not qualified for extended temperature automotive or outdoor use. | Select LT1219CS8#PBF only if ±15V operation or >0.15MHz GBW is required; otherwise LT1219LCS8#PBF offers better temp range and lower power. |
| AD8605ARTZ-REEL7 | FEMTOamp input bias (1pA), lower noise (12nV/√Hz), but only 50µV VOS max and no shutdown pin; SOIC-8 footprint incompatible. | Preferred in ultra-high-impedance pH or photodiode circuits where bias current dominates error; unsuitable for shutdown-controlled systems. | Choose AD8605 only for picoamp-level source impedance applications; LT1219LCS8#PBF remains superior for shutdown, PSRR, and rail-to-rail swing in ADC driver roles. |
Compared with LT1219CS8#PBF, the LT1219LCS8#PBF trades bandwidth for guaranteed extended temperature operation and lower supply current; versus AD8605, it sacrifices input bias performance for integrated shutdown, C-load stability, and robust rail-to-rail swing - making it the optimal choice for battery-powered, multi-channel, mixed-signal ADC interface designs.
Availability
LT1219LCS8#PBF is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered sensor interfaces, and multi-channel data acquisition systems requiring stable component supply across industrial temperature ranges.
Supply support for LT1219LCS8#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, inheriting its legacy of high-performance analog ICs designed for precision, reliability, and low-power operation.
The LT1219L series belongs to Linear's precision rail-to-rail op amp product line, engineered specifically for low-voltage, high-PSRR signal conditioning in space-constrained, battery-operated measurement systems.
FAQ
What is the required output capacitor value for stable operation of the LT1219LCS8#PBF?
The LT1219LCS8#PBF requires a 0.1µF ceramic capacitor connected from OUT (Pin 7) to V– (Pin 4) for stable operation. This capacitor is mandatory - not optional - and enables the device's improved PSRR and reduced high-frequency output impedance. Omitting it results in instability and degraded noise performance, especially when driving ADCs.
Does the LT1219LCS8#PBF support true single-supply operation?
Yes, the LT1219LCS8#PBF supports true single-supply operation. With V– tied to ground and V+ supplied from 2.5V to 5V, it maintains rail-to-rail input common-mode range (0V to V+) and rail-to-rail output swing (0V to V+ – 12mV). Its input stage functions correctly down to V–, and the SHDN pin remains functional when referenced to V+.
How does the shutdown function behave on the LT1219LCS8#PBF?
When SHDN (Pin 8) is pulled low (≤0.8V relative to V–), the LT1219LCS8#PBF enters shutdown mode with supply current dropping below 30µA. The output becomes a high-impedance ~40pF node. Recovery time is ~20µs to exit shutdown, plus additional time for output slewing - e.g., settling from 0V to –2V requires ~20µs more due to 0.05V/µs slew rate.
Is the LT1219LCS8#PBF pin-compatible with other op amps in the LT1218/LT1219 family?
Yes, the LT1219LCS8#PBF shares identical SOIC-8 (S8) pinout with LT1218LCS8#PBF, LT1219CS8#PBF, and LT1218CS8#PBF. All variants use the same 1–8 pin mapping: VOS TRIM, –IN, +IN, V–, VOS TRIM, V+, OUT, SHDN. However, electrical behavior differs - notably, only LT1219 variants require the 0.1µF output capacitor.
What is the maximum common-mode input voltage range for the LT1219LCS8#PBF?
The LT1219LCS8#PBF guarantees rail-to-rail input operation from V– to V+ across its full specified temperature range (–40°C to +85°C). At ±5V supply, this means –5V to +5V; at single 5V supply (V– = 0V), it supports 0V to 5V. Input offset voltage remains ≤90µV across this entire range - a key differentiator versus competing rail-to-rail op amps.
LT1219LCS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- C-Load™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.05V/µs
- Gain Bandwidth Product:
- 150 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 nA
- Voltage - Input Offset:
- 35 µV
- Current - Supply:
- 400µA
- Current - Output / Channel:
- 12 mA
- Voltage - Supply Span (Min):
- 2 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1219LCS8#PBF FAQ
1.How can I place an order for LT1219LCS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1219LCS8#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 LT1219LCS8#PBF reliable?
The price and inventory of LT1219LCS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1219LCS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1219LCS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1219LCS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1219LCS8#PBF?
LT1219LCS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1219LCS8#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 LT1219LCS8#PBF?
For technical support, including LT1219LCS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1219LCS8#PBF requirements.
6.How does Aetrix verify that LT1219LCS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1219LCS8#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 LT1219LCS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1219LCS8#PBF?
All LT1219LCS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1219LCS8#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 LT1219LCS8#PBF part is unused and in its original packaging.
Return procedure for LT1219LCS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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