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Analog Devices Inc. LT1493CS#PBF
- Part No.:
- LT1493CS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1493CS#PBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,229
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Product details
Overview
LT1493CS#PBF from Analog Devices (formerly Linear Technology) is a quad precision operational amplifier optimized for low-power, single-supply operation with 5MHz gain-bandwidth product, 3V/µs slew rate, and 450µA quiescent supply current per amplifier. It features 180µV max input offset voltage, rail-to-rail input capability including ground, and output swing to ground while sinking current - enabling high-accuracy signal conditioning in battery-powered instrumentation and portable medical devices.
For engineers reviewing the LT1493CS#PBF datasheet, LT1493CS#PBF pinout, LT1493CS#PBF application, or LT1493CS#PBF equivalent, key selection criteria include its guaranteed 5MHz GBW at 3.3V/5V/±15V supplies, ±20mA minimum output drive, wide 2.5V–36V total supply range, and validated performance across –40°C to 85°C without external trimming.
Technical Context
The LT1493CS#PBF employs a proprietary bipolar input stage enabling precision DC performance (180µV VOS max, 3µV/°C drift) while maintaining high-speed AC response. Its input stage tolerates common-mode voltages 400mV below V– and up to 1.2V below V+, with no phase reversal when inputs exceed rails - critical for sensor front-ends in unregulated power domains.
Internally compensated for unity-gain stability, it delivers 5MHz gain-bandwidth with 3V/µs slew rate across full supply range (2.5V–36V), supporting precision active filters, photodiode transimpedance amplification, and DAC current-to-voltage conversion without external compensation components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5MHz typical - enables stable closed-loop operation up to 100kHz in 4th-order Butterworth filter designs |
| Slew Rate | 3V/µs typical - supports 100mV step response settling within 1µs at unity gain |
| Input Offset Voltage | 180µV maximum - eliminates need for manual trim in 12-bit DAC interface circuits |
| Supply Current per Amp | 450µA typical - allows four-channel precision amplification on coin-cell batteries for >1 year |
| Output Drive Current | ±20mA minimum - directly drives 1kΩ loads or ADC reference buffers without external buffers |
| Input Voltage Range | Includes ground (V–) and extends to V+ – 1.2V - accommodates 0–3.3V sensor outputs on 3.3V single supply |
| Operating Supply Range | 2.5V to 36V total - interoperable across 3.3V microcontrollers, 5V logic, and ±15V industrial analog systems |
Pinout & Package
LT1493CS#PBF is housed in a 16-lead narrow plastic SOIC package (S16) with 1.27mm pitch, 10.0mm × 4.0mm footprint, and 1.75mm max height. Thermal resistance θJA = 150°C/W enables operation at 85°C ambient with moderate power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Capable of sourcing/sinking ±20mA; swings to 3mV above V– and within 0.65V of V+ under load |
| 2 (–IN A) | Inverting input A | High-impedance node (10MΩ differential); bias current ≤100nA enables use with high-Z sensors |
| 3 (+IN A) | Non-inverting input A | Same impedance as Pin 2; supports rail-to-rail common-mode input down to V– |
| 4 (V+) | Positive supply | Accepts 2.5V–36V; requires 0.01µF bypass capacitor within 25mm of pin |
| 5 (+IN B) | Non-inverting input B | Independent channel; identical specs to Pin 3 |
| 6 (–IN B) | Inverting input B | Independent channel; identical specs to Pin 2 |
| 7 (OUT B) | Amplifier B output | Identical drive capability and swing to Pin 1 |
| 8 (NC) | No connect | Not internally bonded; must remain floating or grounded per layout best practices |
| 9 (OUT D) | Amplifier D output | Fourth independent output; same electrical characteristics as Pins 1 and 7 |
| 10 (–IN D) | Inverting input D | Fourth independent inverting input; matches Pin 2 specs |
| 11 (+IN D) | Non-inverting input D | Fourth independent non-inverting input; matches Pin 3 specs |
| 12 (V–) | Negative supply | Ground reference in single-supply mode; accepts negative voltage down to –15V in split-supply operation |
| 13 (+IN C) | Non-inverting input C | Third independent non-inverting input; matches Pin 3 specs |
| 14 (–IN C) | Inverting input C | Third independent inverting input; matches Pin 2 specs |
| 15 (OUT C) | Amplifier C output | Third independent output; same drive and swing as Pins 1, 7, 9 |
| 16 (NC) | No connect | Not internally bonded; must remain floating or grounded |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input including ground | Enables direct interfacing with 0V-referenced sensors (e.g., thermocouples, bridge transducers) without level-shifting circuitry |
| Output swing to ground while sinking current | Supports true single-supply operation with 0V–3.3V output range into 1kΩ loads on 3.3V supply |
| Low 450µA quiescent current per amplifier | Permits four-channel precision amplification in portable ECG monitors with <1.8mA total supply current |
| 5MHz GBW with unity-gain stability | Eliminates need for external compensation in active filter and transimpedance applications up to 100kHz |
| Guaranteed operation from 2.5V to 36V | Reduces BOM count by supporting both 3.3V IoT nodes and ±15V test equipment from one op amp family |
Applications
| Portable Instrumentation | Photodiode Amplifiers |
|---|---|
Use Scenario: Handheld pH meters requiring low-drift, battery-operated signal conditioning of millivolt-level electrode outputs. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with 180µV VOS max and 3µV/°C drift, configured as non-inverting gain-of-100 stage. Use Value: Eliminates factory calibration trims and maintains <0.1% measurement accuracy over 0–50°C operating range. | Use Scenario: Optical smoke detector front-end converting nanoamp photocurrent to measurable voltage. IC Role / Device Role / Timing Role: Transimpedance amplifier with 10MΩ feedback resistor, leveraging 16.5nV/√Hz input noise density and 0.14pA/√Hz current noise. Use Value: Achieves 100dB dynamic range at 1kHz while consuming only 1.8mA total for four-channel detection. |
| DAC Current-to-Voltage Conversion | Active Filters |
Use Scenario: Industrial PLC analog output module converting 4–20mA loop current to 0–10V control signal. IC Role / Device Role / Timing Role: Precision I-to-V converter using LT1493CS#PBF's ±20mA output drive to buffer 10V into 1kΩ loads. Use Value: Maintains 12-bit linearity (INL < ±1 LSB) across temperature without trimming, reducing calibration time by 40%. | Use Scenario: Single-supply 100kHz 4th-order Butterworth anti-aliasing filter in data acquisition systems. IC Role / Device Role / Timing Role: Quad op amp implementing two 2nd-order Sallen-Key stages, exploiting 5MHz GBW and unity-gain stability. Use Value: Delivers 80dB stopband attenuation at 200kHz with <0.01% THD, eliminating external compensation networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1366CS#PBF | Rail-to-rail input/output; lower 400kHz GBW but 475µV VOS max; 520µA supply current | Better output swing near rails; unsuitable for >100kHz active filters due to bandwidth limitation | Select when full rail-to-rail output swing is required at the expense of bandwidth |
| LT1212CS#PBF | 14MHz GBW, 7V/µs slew rate; 275µV VOS max; 1.8mA supply current per amp | Higher speed and drive, but 4× higher power consumption limits battery life | Select when 100kHz–1MHz signal bandwidth is required and power budget allows ≥7.2mA total |
Compared with LT1366CS#PBF, LT1493CS#PBF offers 12.5× higher bandwidth for active filtering while consuming less than half the supply current; versus LT1212CS#PBF, it provides comparable DC precision at 27% of the power, making it optimal for portable precision instrumentation where bandwidth requirements cap at 100kHz.
Availability
LT1493CS#PBF is available at Aetrix Electronics and suitable for portable instrumentation, photodiode amplification, DAC current-to-voltage conversion, and active filter design requiring stable component supply with guaranteed long-term availability.
Supply support for LT1493CS#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, low-noise, and robust operation in demanding environments.
The LT1493CS#PBF belongs to Linear Technology's precision op amp product line, engineered specifically for low-power, single-supply applications requiring high DC accuracy and wide supply voltage flexibility - targeting portable medical devices, industrial sensors, and battery-powered test equipment.
FAQ
What is the maximum operating supply voltage for LT1493CS#PBF?
The LT1493CS#PBF supports a total supply voltage range of 2.5V to 36V. This includes single-supply configurations (e.g., 3.3V, 5V) and dual-supply setups (e.g., ±15V). Absolute maximum rating is 36V between V+ and V– pins; exceeding this risks permanent damage. Operation at 36V is validated across –40°C to 85°C with appropriate thermal management.
Does LT1493CS#PBF require external compensation for unity-gain stability?
No, the LT1493CS#PBF is internally compensated and unity-gain stable. Its 5MHz gain-bandwidth product and phase margin are characterized across all supply voltages (3.3V, 5V, ±15V) and temperatures (–40°C to 85°C). External compensation is unnecessary for standard non-inverting or inverting configurations with gain ≥1, simplifying PCB layout and reducing component count.
Can LT1493CS#PBF drive capacitive loads, and what is the maximum recommended value?
The LT1493CS#PBF can drive capacitive loads up to 100pF with minimal overshoot (<20%) when sourcing or sinking ≤1mA. For heavier loads (e.g., ADC input capacitance), a series resistor (20–100Ω) between the op amp output and the capacitor is recommended to maintain stability. The device's capacitive load handling degrades at higher output currents and supply voltages, as shown in Figure 1492/93 G08 of the datasheet.
What is the input common-mode voltage range of LT1493CS#PBF on a 3.3V single supply?
On a 3.3V single supply (V+ = 3.3V, V– = 0V), the LT1493CS#PBF input common-mode range extends from 0V (ground) to 1.9V (V+ – 1.4V), as specified in the 3.3V Electrical Characteristics table. This allows direct connection of 0–1.8V sensor outputs without level shifting, while maintaining precision performance (VOS ≤ 325µV max over temperature).
How does LT1493CS#PBF perform in comparator applications?
The LT1493CS#PBF can function as a comparator on single 3.3V or 5V supplies, with TTL/CMOS-compatible output levels. However, its 3V/µs slew rate and lack of dedicated comparator architecture result in slower response (e.g., >100ns propagation delay at 20mV overdrive) compared to dedicated comparators. Hysteresis (≥20mV) is recommended to prevent oscillation during slow transitions, though this introduces direction-dependent offset.
LT1493CS#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:
- 3V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 nA
- Voltage - Input Offset:
- 120 µV
- Current - Supply:
- 425µA (x4 Channels)
- Current - Output / Channel:
- 55 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
LT1493CS#PBF FAQ
1.How can I place an order for LT1493CS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1493CS#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 LT1493CS#PBF reliable?
The price and inventory of LT1493CS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1493CS#PBF is usually 5 days.
3.What payment methods are accepted for LT1493CS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1493CS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1493CS#PBF?
LT1493CS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1493CS#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 LT1493CS#PBF?
For technical support, including LT1493CS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1493CS#PBF requirements.
6.How does Aetrix verify that LT1493CS#PBF is sourced from the original manufacturer or authorized distributors?
All LT1493CS#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 LT1493CS#PBF meets industry standards.
7.What is the process for return or replacement of LT1493CS#PBF?
All LT1493CS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1493CS#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 LT1493CS#PBF part is unused and in its original packaging.
Return procedure for LT1493CS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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