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Analog Devices Inc. LT1353CS#TRPBF
- Part No.:
- LT1353CS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1353CS#TRPBF.pdf
- Description:
- IC VOLTAGE FEEDBACK 4 CIRC 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,917
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Product details
Overview
LT1353CS#TRPBF from Analog Devices (formerly Linear Technology) is a quad, low-power, high-speed operational amplifier optimized for precision wideband signal conditioning in ±2.5V to ±15V supplies. It delivers 3MHz gain bandwidth, 200V/µs slew rate, and 250µA per amplifier supply current while driving capacitive loads without external compensation - enabling use in photodiode preamps, active filters, and data acquisition front-ends.
For engineers reviewing the LT1353CS#TRPBF datasheet, LT1353CS#TRPBF pinout, LT1353CS#TRPBF application, or LT1353CS#TRPBF equivalent, key selection criteria include guaranteed 0.01% settling in 1.25µs at ±15V, input offset voltage ≤1.0mV over –40°C to 85°C, C-load stability up to 10nF, and SO-14 narrow-body packaging for space-constrained PCB layouts.
Technical Context
The LT1353CS#TRPBF employs a proprietary voltage-feedback topology with complementary bipolar input stage and bootstrapped RC-CC compensation, delivering current-feedback-like slew performance while retaining matched high-impedance inputs. Its internal 1kΩ input resistor sets slew rate proportionally to differential input voltage, ensuring consistent large-signal response across gain configurations.
Each of the four amplifiers features independent high-impedance NPN/PNP input pairs enabling first-order bias current cancellation, 300MΩ minimum input resistance, and rail-to-rail input voltage range within ±1.5V of supplies - supporting accurate DC-coupled sensing in battery-powered instrumentation and industrial analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 3.0MHz at ±15V - supports stable closed-loop operation up to 300kHz with gain ≥10. |
| Slew Rate | 200V/µs at ±15V - enables full-scale 10V output step in ≤700ns with 0.1% settling. |
| Supply Current | 380µA per amplifier max at –40°C to 85°C - enables ultra-low-power operation in always-on sensor nodes. |
| Input Offset Voltage | 1.0mV max over full temperature range - ensures <0.5LSB error in 12-bit DAC I-to-V converters with 5kΩ feedback. |
| Output Swing | ±10.0V into 1kΩ at ±15V - drives ADC drivers and line drivers without external level-shifting. |
| Capacitive Load Drive | Stable with ≥10nF - eliminates need for isolation resistors in photodiode transimpedance stages. |
| Common-Mode Rejection | 76dB min at ±12V input - maintains accuracy in noisy industrial environments with ground offsets. |
Pinout & Package
LT1353CS#TRPBF is housed in a 14-lead narrow SOIC (S package), 5.79mm × 3.99mm body, 1.27mm pitch, with exposed pad not present. Thermal resistance θJA = 150°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Capable of ±10V swing into 1kΩ at ±15V; drives ADC inputs or downstream buffers directly. |
| 2 (–IN A) | Inverting input A | High-impedance node (≥300MΩ); requires matched source impedance to +IN A for optimal DC accuracy. |
| 3 (+IN A) | Non-inverting input A | Complementary NPN/PNP pair enables bias current cancellation; tolerant of ±10V transient differential input. |
| 4 (V+) | Positive supply rail | Accepts +2.5V to +15V; must be bypassed with 0.01µF ceramic + 1µF tantalum for high-current transients. |
| 5 (+IN B) | Non-inverting input B | Independent input stage identical to Pin 3; supports dual-channel synchronous signal processing. |
| 6 (–IN B) | Inverting input B | Matches Pin 2 electrically; enables matched gain-setting networks for differential pair configurations. |
| 7 (OUT B) | Amplifier B output | Electrically identical to Pin 1; channel separation >99dB prevents crosstalk in multi-channel data acquisition. |
| 8 (OUT D) | Amplifier D output | Fourth independent output; allows single-package implementation of 4-channel sensor signal conditioning. |
| 9 (–IN D) | Inverting input D | Matches Pins 2 and 6; supports scalable multi-channel filter banks or parallel ADC driver stages. |
| 10 (V–) | Negative supply rail | Accepts –2.5V to –15V; shares thermal path with V+ for symmetrical power dissipation. |
| 11 (+IN C) | Non-inverting input C | Third channel input; enables simultaneous processing of reference, calibration, and main signal paths. |
| 12 (–IN C) | Inverting input C | Matches all other inverting inputs; supports precision summing or difference amplification. |
| 13 (OUT C) | Amplifier C output | Third output; allows integration of feedback control loop within same IC as signal chain. |
| 14 (NC) | No connect | Internally unconnected; must remain floating - no routing or grounding permitted. |
Key Features
| Feature | Design Value |
|---|---|
| C-Load™ stability | Drives ≥10nF capacitive loads without external compensation - eliminates series isolation resistors in photodiode amps. |
| Unity-gain stable | Operates stably at AV = 1 with 100% phase margin - enables buffer configurations without gain-setting resistors. |
| Wide supply range | Functions from ±2.5V to ±15V - supports both low-voltage portable systems and industrial ±12V rails. |
| Low input bias current | 100nA max over temperature - preserves accuracy in high-impedance pH or thermocouple sensor interfaces. |
| Fast settling time | 1.25µs to 0.01% for 10V step - meets timing requirements for 1MSPS SAR ADC drivers. |
Applications
| Photodiode Preamp | Active Filter Stage |
|---|---|
Use Scenario: Amplifying weak current from BPV22NF photodiode in 400kHz optical receiver with 10kHz high-pass loop. IC Role / Device Role / Timing Role: Transimpedance amplifier with 10kΩ feedback, providing 10V/µA gain and 700ns 0.1% settling for pulse detection. Use Value: C-Load stability eliminates need for feedback capacitor tuning; 14nV/√Hz input noise preserves SNR in low-light conditions. | Use Scenario: 20kHz 4th-order Butterworth low-pass filter using dual LT1352 sections in Sallen-Key topology. IC Role / Device Role / Timing Role: Dual op-amp implementing 2-pole sections with 220pF/470pF/4700pF network for precise cutoff and phase linearity. Use Value: 3MHz GBW ensures <0.1dB passband ripple; 200V/µs slew prevents distortion on 5Vpp filter outputs. |
| Data Acquisition Front-End | DAC Output Buffer |
Use Scenario: Four-channel simultaneous sampling system conditioning signals from strain gauges and RTDs before 16-bit ADC. IC Role / Device Role / Timing Role: Quad amplifier performing gain, offset correction, and anti-alias filtering per channel in single SO-14 package. Use Value: Channel separation >99dB prevents inter-channel crosstalk; 1.0mV VOS ensures <0.01% measurement error at full scale. | Use Scenario: Buffering 12-bit DAC output (e.g., LTC1595) driving 500Ω cable load in automated test equipment. IC Role / Device Role / Timing Role: Unity-gain voltage follower with ±3.4V swing into 500Ω at ±5V supplies, settling in 950ns to 0.1%. Use Value: 250µA supply current minimizes power in multi-DAC systems; rail-to-rail input enables direct connection to DAC output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1353IS#TRPBF | Guaranteed –40°C to 85°C operation with 100% tested VOS ≤1.0mV; same pinout and electrical specs. | Required for automotive under-hood or industrial outdoor deployments where extended temp validation is mandated. | Select LT1353IS#TRPBF when full temperature-range QA sampling and guaranteed parametric limits are contractually required. |
| OP482ARZ | Higher 4.5MHz GBW but 1.2mA supply current per amp; not C-load stable - requires 100pF feedback capacitor for 1nF loads. | Better for high-frequency (>1MHz) closed-loop applications where power budget allows 4.8× higher quiescent current. | Choose OP482ARZ only if bandwidth >3.5MHz is essential and layout permits added compensation components. |
Compared with LT1353IS#TRPBF, the LT1353CS#TRPBF trades guaranteed extended-temperature testing for lower cost and same room-temperature performance; versus OP482ARZ, it provides superior capacitive load drive and 4.8× lower supply current at the expense of 1.5MHz bandwidth.
Availability
LT1353CS#TRPBF is available at Aetrix Electronics and suitable for photodiode preamplifiers, active filter stages, and data acquisition front-ends requiring stable component supply, long-term obsolescence management, and traceable lot-level documentation.
Supply support for LT1353CS#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 acquired Linear Technology in 2017 and maintains full product continuity, technical support, and manufacturing for legacy Linear op-amps including the LT1353 family.
The LT1353CS#TRPBF belongs to Linear's C-Load™ precision op-amp product line, designed specifically for wideband, low-power, capacitive-load-tolerant signal conditioning in instrumentation, medical, and industrial analog systems.
FAQ
What supply voltage ranges are supported by the LT1353CS#TRPBF?
The LT1353CS#TRPBF operates from ±2.5V to ±15V total supply voltage, with guaranteed performance across the full –40°C to 85°C temperature range. At ±2.5V, it delivers 2.5MHz gain bandwidth and 15V/µs slew rate; at ±15V, it achieves 3.0MHz GBW and 200V/µs slew rate. The LT1353CS#TRPBF maintains rail-to-rail input common-mode range within ±1.5V of either supply rail.
Is the LT1353CS#TRPBF stable when driving large capacitive loads?
Yes, the LT1353CS#TRPBF is explicitly designed for unconditional stability with capacitive loads up to at least 10nF, per its C-Load™ trademarked architecture. Unlike conventional op-amps, it requires no external isolation resistor or feedback capacitor for stabilization - enabling direct connection to photodiode anodes, ADC input capacitors, or long cables without peaking or oscillation.
What is the maximum guaranteed input offset voltage for LT1353CS#TRPBF over temperature?
The LT1353CS#TRPBF has a maximum input offset voltage of 1.0mV over the full –40°C to 85°C operating temperature range, as specified in the –40°C ≤ TA ≤ 85°C electrical characteristics table. This limit applies at ±2.5V, ±5V, and ±15V supplies and ensures predictable DC accuracy in precision sensor interfaces without trimming.
How many independent amplifiers does the LT1353CS#TRPBF contain, and what is their channel separation?
The LT1353CS#TRPBF contains four fully independent operational amplifiers in a single 14-lead SOIC package. Channel separation is guaranteed ≥99dB at ±15V supplies with ±10V output swing into 2kΩ loads, measured at 10kHz. This high isolation enables simultaneous multi-channel signal processing without crosstalk-induced measurement errors.
Does the LT1353CS#TRPBF require external compensation components for unity-gain operation?
No, the LT1353CS#TRPBF is unity-gain stable and requires no external compensation components. Its internal compensation network - including bootstrapped RC-CC elements - ensures ≥60° phase margin at AV = 1 across all supply voltages and temperatures. This allows direct use as a voltage follower in DAC output buffering or signal distribution without risk of oscillation.
LT1353CS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 200V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 250µA (x4 Channels)
- Current - Output / Channel:
- 14 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
LT1353CS#TRPBF FAQ
1.How can I place an order for LT1353CS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1353CS#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 LT1353CS#TRPBF reliable?
The price and inventory of LT1353CS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1353CS#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1353CS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1353CS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1353CS#TRPBF?
LT1353CS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1353CS#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 LT1353CS#TRPBF?
For technical support, including LT1353CS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1353CS#TRPBF requirements.
6.How does Aetrix verify that LT1353CS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1353CS#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 LT1353CS#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1353CS#TRPBF?
All LT1353CS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1353CS#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 LT1353CS#TRPBF part is unused and in its original packaging.
Return procedure for LT1353CS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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