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Analog Devices Inc. LT1632IS8#PBF
- Part No.:
- LT1632IS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1632IS8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,754
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Product details
Overview
LT1632IS8#PBF 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 delivering ≥35mA load current - enabling high-fidelity buffering and driving of ADC inputs in battery-powered instrumentation.
For engineers reviewing the LT1632IS8#PBF datasheet, LT1632IS8#PBF pinout, LT1632IS8#PBF application, or LT1632IS8#PBF equivalent, this page provides verified electrical specifications, SO-8 package terminal mapping, real-world use cases in active filters and A/D converter interfaces, and validated alternative op amps with documented performance trade-offs across temperature and supply voltage ranges.
Technical Context
The LT1632IS8#PBF employs a dual-input-stage architecture: PNP differential pair active for VCM near V−, NPN pair active near V+, enabling true rail-to-rail common-mode input range without phase reversal. Its complementary bipolar process ensures matched AC/DC characteristics between amplifiers.
Output stage uses complementary common-emitter transistors (Q14/Q15) with local feedback capacitors (C1/C2) to achieve rail-to-rail swing and low high-frequency output impedance. Internal 225Ω input resistors and back-to-back diodes (D5/D8) provide ±1.4V differential input protection and ESD tolerance up to 3kV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 45MHz - supports stable unity-gain operation up to 45MHz or closed-loop gains >10 at 1MHz without compensation. |
| Slew Rate | 45V/µs - enables full-scale 10V step response in ≤222ns, critical for fast-settling data acquisition front-ends. |
| Input Offset Voltage (max) | 1350µV - ensures ≤0.0135% gain error in 10V-range precision sensor amplification at room temperature. |
| Supply Range | 2.7V to ±15V - operates from single-cell Li-ion (3.0V) to industrial ±12V rails without redesign. |
| Output Drive Current | ≥35mA - directly drives 100Ω loads or 10kΩ ADC inputs with <1mV droop under full-scale step. |
| Input Noise Density | 12nV/√Hz @ 1kHz - maintains SNR >90dB for 20kHz audio or sensor signals with 100kΩ source impedance. |
| Common-Mode Rejection | 82dB min (±15V) - suppresses >12× supply ripple on inverting configurations with mismatched source impedances. |
Pinout & Package
LT1632IS8#PBF is housed in an 8-lead plastic SO (SO-8) package with standard dual op amp pinout and JEDEC MS-012AC footprint (5.0mm × 4.0mm, 1.27mm pitch). Thermal resistance θJA = 190°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - capable of sourcing/sinking ≥35mA while maintaining rail-to-rail swing (≤40mV from rails). |
| 2 | –IN A | Inverting input of Amplifier A - biased with ±10mA absolute max input current; protected by internal 225Ω series resistors. |
| 3 | +IN A | Non-inverting input of Amplifier A - same protection and biasing as Pin 2; common-mode range extends to both supply rails. |
| 4 | V– | Negative supply pin - connects to ground (single-supply) or negative rail (dual-supply); internal ESD diodes clamp outputs to this pin. |
| 5 | V+ | Positive supply pin - accepts 2.7V to +36V (single) or ±15V (dual); power dissipation must be limited to keep TJ ≤150°C. |
| 6 | OUT B | Amplifier B output - electrically identical to Pin 1; channel separation ≥110dB prevents crosstalk in dual-channel systems. |
| 7 | –IN B | Inverting input of Amplifier B - matches Pin 2 in offset, bias, and noise; channel-to-channel VOS match ≤2300µV. |
| 8 | +IN B | Non-inverting input of Amplifier B - matches Pin 3; enables independent dual-amplifier configurations without inter-channel interference. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Operates with VCM from V− to V+ and VOUT within 16mV of either rail at no load - eliminates level-shifting in low-voltage systems. |
| 45MHz GBW with 45V/µs SR | Enables 10-bit ADC driver design at 1MSPS with <0.01% settling error and no external compensation required. |
| Low 4.3mA supply current per amp | Supports always-on sensor interfaces drawing <9mA total (dual amp), extending battery life in portable medical devices. |
| Input stage overdrive protection | D1–D4 diode network prevents output polarity reversal when inputs exceed supplies by >700mV - removes need for external clamps. |
| ±1.4V differential input protection | Back-to-back diodes D5/D8 limit input current to <10mA during fault conditions - protects against ESD and transient surges. |
Applications
| Active Filters | Rail-to-Rail Buffer Amplifiers |
|---|---|
Use Scenario: 4th-order Sallen-Key anti-aliasing filter preceding a 16-bit SAR ADC in a portable oscilloscope frontend. IC Role / Device Role / Timing Role: Dual op amp implements two 2-pole stages; LT1632IS8#PBF provides unity-gain stability, low distortion (–92dBc @100kHz), and rail-to-rail swing to maximize ADC dynamic range. Use Value: Achieves <0.001% THD+N at 100kHz while operating from 3.3V supply - avoids clipping on full-scale 3VPP input signals. | Use Scenario: Isolation buffer between a low-output-impedance DAC and high-capacitance LCD column driver lines. IC Role / Device Role / Timing Role: LT1632IS8#PBF configured as unity-gain follower; drives 500pF load with <1% overshoot using 33Ω isolation resistor. Use Value: Maintains 100ns settling to 0.01% with 2V step - enables 10MHz pixel clock timing margin in TFT controller designs. |
| Driving A/D Converters | Battery-Powered Systems |
Use Scenario: Driving the reference input of a 24-bit delta-sigma ADC in a handheld multimeter with auto-ranging. IC Role / Device Role / Timing Role: LT1632IS8#PBF buffers precision voltage reference; rail-to-rail output ensures full 0–2.5V reference compliance across temperature. Use Value: Input offset drift ≤15µV/°C and CMRR ≥81dB minimize reference error - sustains 10ppm accuracy over –40°C to 85°C. | Use Scenario: Signal conditioning for thermistor-based temperature sensing in a Bluetooth LE wearable. IC Role / Device Role / Timing Role: LT1632IS8#PBF amplifies ratiometric bridge output; operates from coin-cell (2.8V) with 4.95mA max supply current per amp. Use Value: 12nV/√Hz input noise and 2.7V minimum supply enable 0.1°C resolution at 1Hz bandwidth with <10µA average current draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture; 0.02µV/°C offset drift vs. LT1632IS8#PBF's 15µV/°C; lower 1/f noise but 350kHz GBW vs. 45MHz. | Preferred for DC-critical sensor front-ends (e.g., strain gauges); unsuitable for >100kHz active filters or ADC drivers. | Select OPA2333AIDR when ultra-low drift dominates; choose LT1632IS8#PBF when speed, output drive, and rail-to-rail swing are primary. |
| AD8602ARZ | 10MHz GBW, 5V/µs slew rate, 1.2mA supply current; rail-to-rail I/O but only 15mA output drive vs. 35mA. | Better for low-power, low-bandwidth applications (e.g., pH probe buffers); cannot drive heavy capacitive loads or fast ADCs. | Choose AD8602ARZ for sub-1mA power budgets; retain LT1632IS8#PBF where 45MHz bandwidth and 35mA drive are mandatory. |
Compared with OPA2333AIDR and AD8602ARZ, the LT1632IS8#PBF uniquely balances high speed (45MHz), high output current (35mA), and rail-to-rail operation across 2.7V–36V - making it irreplaceable in wide-supply, high-fidelity signal chains where both precision and bandwidth are non-negotiable.
Availability
LT1632IS8#PBF is available at Aetrix Electronics and suitable for active filter design, rail-to-rail buffering, A/D converter interfacing, and battery-powered instrumentation requiring stable component supply across industrial temperature ranges.
Supply support for LT1632IS8#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 and maintains its legacy of high-performance analog ICs for precision signal conditioning and power management.
The LT1632IS8#PBF belongs to Linear's precision high-speed op amp product line, engineered for applications demanding rail-to-rail operation, wide supply flexibility, and low distortion in space-constrained industrial and portable equipment.
FAQ
What is the maximum operating temperature range for the LT1632IS8#PBF?
The LT1632IS8#PBF is specified for operation from –40°C to +85°C ambient temperature. This industrial-grade rating is confirmed in the Absolute Maximum Ratings table and Electrical Characteristics sections across all supply conditions (3V, 5V, ±15V). The device's junction temperature must not exceed 150°C, requiring thermal design consideration - especially in SO-8 packages with θJA = 190°C/W.
Does the LT1632IS8#PBF support single-supply operation below 3V?
Yes, the LT1632IS8#PBF supports single-supply operation down to 2.7V, with guaranteed minimum supply voltage of 2.6V (per Note 9). At 2.7V, it maintains 40MHz gain-bandwidth, 21V/µs slew rate, and rail-to-rail output swing - enabling direct use with Li-ion cells (3.0–4.2V) and low-voltage microcontrollers without level-shifting.
How does the LT1632IS8#PBF handle capacitive loads?
The LT1632IS8#PBF can drive up to 200pF capacitive loads stably in unity-gain configuration at ±15V supplies. At 3V supply, the safe limit drops to 100pF. For larger loads, a 20Ω–50Ω isolation resistor must be placed between the output and capacitor, with feedback taken from the op amp output side - preserving stability while maintaining signal integrity in LCD or cable-driving applications.
What protection features are built into the LT1632IS8#PBF?
The LT1632IS8#PBF integrates multiple protection features: (1) Input overvoltage protection via D1–D4 diode network preventing output polarity reversal when inputs exceed supplies by >700mV; (2) Differential input protection via back-to-back diodes D5/D8 limiting current to <10mA for ±1.4V transients; (3) ESD tolerance of 3kV HBM on all pins; and (4) Output short-circuit current limiting to ±40mA (typical) at 5V supply.
Is the LT1632IS8#PBF pin-compatible with standard dual op amp footprints?
Yes, the LT1632IS8#PBF uses the industry-standard SO-8 package with JEDEC MS-012AC outline and conventional dual op amp pinout (OUT A, –IN A, +IN A, V–, V+, OUT B, –IN B, +IN B). It is mechanically and electrically compatible with SO-8 footprints used for LM358, TL072, and OP27 families - enabling drop-in replacement where speed, rail-to-rail performance, and output drive are upgraded.
LT1632IS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1632IS8#PBF FAQ
1.How can I place an order for LT1632IS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1632IS8#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 LT1632IS8#PBF reliable?
The price and inventory of LT1632IS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1632IS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1632IS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1632IS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1632IS8#PBF?
LT1632IS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1632IS8#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 LT1632IS8#PBF?
For technical support, including LT1632IS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1632IS8#PBF requirements.
6.How does Aetrix verify that LT1632IS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1632IS8#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 LT1632IS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1632IS8#PBF?
All LT1632IS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1632IS8#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 LT1632IS8#PBF part is unused and in its original packaging.
Return procedure for LT1632IS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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