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Analog Devices Inc. LT1632CS8#TRPBF
- Part No.:
- LT1632CS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1632CS8#TRPBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,487
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Product details
Overview
LT1632CS8#TRPBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail input and output precision operational amplifier optimized for high-speed, low-voltage signal conditioning. It delivers 45MHz gain-bandwidth, 45V/µs slew rate, 4.3mA supply current per amplifier, ±15V or 2.7V–36V single/dual supply operation, and rail-to-rail output swing within 16mV of each rail at 5mA load - enabling high-fidelity buffering in battery-powered instrumentation and data acquisition systems.
For engineers reviewing the LT1632CS8#TRPBF datasheet, LT1632CS8#TRPBF pinout, LT1632CS8#TRPBF application, or LT1632CS8#TRPBF equivalent, key selection criteria include guaranteed rail-to-rail input common-mode range (including both supplies), DC precision (1350µV max VOS), low 12nV/√Hz input noise, and SO-8 package compatibility with standard dual op-amp footprints for drop-in upgrades of legacy amplifiers.
Technical Context
The LT1632CS8#TRPBF employs a complementary bipolar input stage with PNP/NPN switching to maintain rail-to-rail input operation across its full supply range. Its open-loop gain exceeds 800V/mV into 10kΩ, ensuring minimal gain error in precision closed-loop configurations, while channel separation reaches 127dB - critical for dual-channel isolation in differential signal paths.
It features internal overdrive protection via cross-coupled diodes (D1–D4) preventing phase reversal when inputs exceed rails by >700mV, and ESD protection rated to 3kV on all pins. Output drive capability supports ≥35mA sink/source, with short-circuit current limited to ±70mA under ±15V conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 45MHz - enables stable unity-gain operation up to 45MHz or closed-loop gains >10 at multi-MHz frequencies. |
| Slew Rate | 45V/µs - supports clean 10VPP output steps at >1MHz without slewing distortion. |
| Input Offset Voltage | 1350µV max - ensures ≤0.1% gain error in 100× inverting amplifiers with matched feedback resistors. |
| Supply Range | 2.7V to ±15V - operates from single-cell Li-ion (3.0V) to industrial ±15V rails without redesign. |
| Output Swing | Rail-to-rail - delivers 0.016V above V– and 0.016V below V+ at no load, preserving dynamic range in low-voltage ADC drivers. |
| Input Noise Density | 12nV/√Hz at 1kHz - contributes <1.2µVRMS integrated noise in 10kHz bandwidth, suitable for µV-level sensor interfaces. |
| Common-Mode Rejection | 98dB min - suppresses power-supply ripple and ground noise in noninverting configurations. |
Pinout & Package
LT1632CS8#TRPBF is housed in an 8-lead plastic SO (SO-8) package with standard dual op-amp pinout and JEDEC MS-012AC footprint (5.0mm × 6.2mm, 1.27mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 35mA; rail-to-rail swing enables full-scale ADC interfacing. |
| 2 | –IN A | Inverting input of Amp A - high-impedance node; bias current polarity reverses with input common-mode voltage. |
| 3 | +IN A | Noninverting input of Amp A - accepts signals from V– to V+, including supply rails. |
| 4 | V– | Negative supply - connects to ground (single supply) or negative rail (dual supply); internal ESD diodes clamp to this pin. |
| 5 | V+ | Positive supply - supports 2.7V–36V total supply range; thermal resistance θJA = 190°C/W in still air. |
| 6 | OUT B | Amplifier B output - electrically isolated from OUT A; channel separation >110dB prevents crosstalk. |
| 7 | –IN B | Inverting input of Amp B - matches –IN A performance; offset voltage match ≤2300µV ensures matched gain accuracy. |
| 8 | +IN B | Noninverting input of Amp B - identical rail-to-rail input behavior as +IN A; supports common-mode voltages beyond supplies. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Operates with VCM from V– to V+ - eliminates level-shifting circuitry in single-supply sensor front-ends. |
| Low input bias current shift | ≤4.4µA ∆IB over full VCM range - minimizes offset drift in high-impedance transducer interfaces. |
| High PSRR | 96dB min - rejects supply noise in noisy embedded environments without external regulation. |
| Capacitive load drive | Stable with ≤200pF at ±15V - enables direct connection to ADC input capacitors or long PCB traces. |
| Overdrive protection | Prevents output polarity reversal during input overvoltage - protects downstream circuitry without external clamps. |
Applications
| Active Filters | Rail-to-Rail Buffer Amplifiers |
|---|---|
Use Scenario: 4th-order Sallen-Key low-pass filter for anti-aliasing before a 16-bit SAR ADC in portable medical monitors. IC Role / Device Role / Timing Role: Dual amplifier implements two cascaded 2-pole stages; rail-to-rail output ensures full ADC input range utilization. Use Value: 45MHz GBW allows filter cutoffs up to 2MHz with <0.1dB passband ripple; low 12nV/√Hz noise preserves SNR. | Use Scenario: Isolating high-impedance pH electrode output in handheld water quality testers. IC Role / Device Role / Timing Role: Noninverting buffer with unity gain; rail-to-rail input accepts electrode potentials near 0V or 3.3V reference. Use Value: Input offset <1350µV avoids calibration drift; 4.3mA supply current extends battery life in 3.3V coin-cell designs. |
| Driving A/D Converters | Battery-Powered Systems |
Use Scenario: Driving the input of a 1MSPS, 12-bit successive-approximation ADC in industrial IoT edge nodes. IC Role / Device Role / Timing Role: Precision driver with fast settling (400ns to 0.01%) and rail-to-rail swing matching ADC reference. Use Value: 45V/µs slew rate ensures full-scale transitions settle within one ADC clock cycle; low THD (–92dBc) preserves ENOB. | Use Scenario: Signal conditioning for piezoelectric vibration sensors in wireless predictive maintenance sensors. IC Role / Device Role / Timing Role: Low-noise preamplifier powered from 3.0V Li-ion; dual configuration processes X/Y axis signals simultaneously. Use Value: 2.7V minimum supply enables operation down to end-of-life battery voltage; 12nV/√Hz noise captures sub-mV sensor outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8628ARZ | Zero-drift architecture; 1µV max VOS, 0.005µV/°C drift; lower GBW (2.5MHz), higher supply current (1.2mA). | Better DC stability for ultra-low-frequency sensor offsets; unsuitable for >100kHz closed-loop bandwidths. | Select AD8628ARZ when microvolt-level offset drift dominates over speed; avoid for active filter or ADC driver roles requiring >1MHz bandwidth. |
| OPA2333AIDR | Zero-drift; 12µV max VOS, 0.02µV/°C drift; 350kHz GBW, 17µA supply current; rail-to-rail I/O. | Ultra-low power for always-on monitoring; insufficient slew rate (160mV/µs) for fast-settling ADC drivers. | Select OPA2333AIDR only for sub-100kHz, nanoamp-battery applications where offset drift matters more than bandwidth. |
Compared with AD8628ARZ and OPA2333AIDR, the LT1632CS8#TRPBF trades ultra-low drift for 45× higher bandwidth and 26× faster slew rate - making it the sole choice among the three for precision high-speed signal chains requiring both rail-to-rail operation and MHz-range fidelity.
Availability
LT1632CS8#TRPBF is available at Aetrix Electronics and suitable for active filters, rail-to-rail buffer amplifiers, and driving A/D converters requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LT1632CS8#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 its high-performance analog portfolio, emphasizing precision, speed, and robustness in signal conditioning ICs.
The LT1632CS8#TRPBF belongs to Linear's precision rail-to-rail op amp family, designed specifically for applications demanding wide supply range, high DC accuracy, and fast transient response in space-constrained, low-voltage systems.
FAQ
What is the maximum operating temperature range for the LT1632CS8#TRPBF?
The LT1632CS8#TRPBF is specified for operation from –40°C to +85°C ambient temperature. Its junction temperature must not exceed 150°C, and thermal calculations using θJA = 190°C/W (SO-8 package) are required to ensure safe operation under load. The device is not tested at extremes but is characterized for extended temperature performance.
Does the LT1632CS8#TRPBF support true rail-to-rail input on single-supply configurations?
Yes, the LT1632CS8#TRPBF supports true rail-to-rail input - its input common-mode range extends from V– to V+, including both supply rails. This allows direct interfacing with sensors or DACs operating at ground or VCC without external level-shifting circuitry in 3V or 5V single-supply systems.
Can the LT1632CS8#TRPBF drive a 1000pF capacitive load stably?
No, the LT1632CS8#TRPBF is not stable with 1000pF directly at the output. It supports ≤200pF at ±15V and ≤100pF at 3V. For larger loads, a 20Ω–50Ω isolation resistor must be placed between the output and the capacitor, with feedback taken from the amplifier output side of the resistor to maintain stability.
What is the typical input bias current polarity of the LT1632CS8#TRPBF and why does it matter?
The LT1632CS8#TRPBF exhibits polarity-reversing input bias current: currents flow *out* of inputs when the PNP input stage is active (low VCM) and *into* inputs when the NPN stage is active (high VCM). This requires matched source impedances at +IN and –IN to minimize offset error - especially critical in high-precision, high-impedance transducer interfaces.
Is the LT1632CS8#TRPBF pin-compatible with standard dual op-amp SO-8 footprints?
Yes, the LT1632CS8#TRPBF uses the industry-standard dual op-amp SO-8 pinout (pin 1 = OUT A, pin 2 = –IN A, pin 3 = +IN A, pin 4 = V–, pin 5 = V+, pin 6 = OUT B, pin 7 = –IN B, pin 8 = +IN B), enabling drop-in replacement of legacy dual op-amps like LM358 or TL082 in existing PCB layouts.
LT1632CS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 45V/µs
- Gain Bandwidth Product:
- 45 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1.15 µA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 4.6mA (x2 Channels)
- Current - Output / Channel:
- 70 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1632CS8#TRPBF FAQ
1.How can I place an order for LT1632CS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1632CS8#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 LT1632CS8#TRPBF reliable?
The price and inventory of LT1632CS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1632CS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1632CS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1632CS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1632CS8#TRPBF?
LT1632CS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1632CS8#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 LT1632CS8#TRPBF?
For technical support, including LT1632CS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1632CS8#TRPBF requirements.
6.How does Aetrix verify that LT1632CS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1632CS8#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 LT1632CS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1632CS8#TRPBF?
All LT1632CS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1632CS8#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 LT1632CS8#TRPBF part is unused and in its original packaging.
Return procedure for LT1632CS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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