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Analog Devices Inc. LT1632CN8#PBF
- Part No.:
- LT1632CN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1632CN8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:139
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Product details
Overview
LT1632CN8#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 capable of sourcing/sinking ≥35mA - enabling use in active filters, A/D driver stages, and battery-powered instrumentation.
For engineers reviewing the LT1632CN8#PBF datasheet, LT1632CN8#PBF pinout, LT1632CN8#PBF application, or LT1632CN8#PBF equivalent, key selection criteria include guaranteed rail-to-rail input common-mode range (including both supplies), maximum 1350µV input offset voltage at full temperature range, 12nV/√Hz input noise density, and compatibility with PDIP-8 packaging for through-hole prototyping and legacy industrial designs.
Technical Context
The LT1632CN8#PBF employs a dual-input-stage architecture-comprising PNP and NPN differential pairs-that automatically switches across the full rail-to-rail input common-mode range (V– to V+), eliminating phase reversal and ensuring stable DC precision. Its complementary bipolar process enables matched AC/DC performance between channels.
Output stage uses rail-to-rail complementary common-emitter transistors (Q14/Q15) with local feedback capacitors (C1/C2) to maintain low output impedance at high frequencies while delivering >35mA drive capability into resistive loads and stable operation with ≤200pF capacitive loads on ±15V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 45MHz - supports closed-loop gains up to ~45 at 1MHz or unity-gain stability for wideband filtering and signal reconstruction. |
| Slew Rate | 45V/µs - enables clean 10Vpp output at ≥1MHz without slewing distortion in high-fidelity analog front-ends. |
| Input Offset Voltage (Max) | 1350µV - ensures ≤0.135% gain error in 1V full-scale precision buffer or sensor interface applications. |
| Supply Range | 2.7V to ±15V - supports direct integration into 3V microcontroller systems or ±12V industrial control rails without level-shifting. |
| Output Drive Current | ≥35mA - drives 100Ω loads directly or interfaces with ADC reference buffers and multiplexer drivers without external boost stages. |
| Input Noise Density | 12nV/√Hz @ 1kHz - maintains SNR >90dB in 20kHz audio paths or low-level sensor amplification chains. |
| Common-Mode Rejection | 82dB min (±15V) - rejects power-supply ripple and ground bounce in single-supply mixed-signal PCB layouts. |
Pinout & Package
LT1632CN8#PBF is housed in an 8-pin plastic DIP (PDIP-8) package with standard dual op amp pinout and through-hole mounting compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - rail-to-rail swing, capable of sourcing/sinking ≥35mA into resistive loads. |
| 2 | –IN A | Inverting input of Amplifier A - accepts signals from V– to V+, with bias current polarity dependent on common-mode region. |
| 3 | +IN A | Non-inverting input of Amplifier A - identical rail-to-rail common-mode range and bias current behavior as Pin 2. |
| 4 | V– | Negative supply rail - connects to ground (single supply) or negative voltage (dual supply); internal ESD diodes protect against overvoltage. |
| 5 | V+ | Positive supply rail - supports 2.7V–36V total supply range; thermal design must account for θJA = 130°C/W. |
| 6 | OUT B | Amplifier B output - electrically isolated from OUT A; channel separation ≥110dB minimizes crosstalk in dual-channel systems. |
| 7 | –IN B | Inverting input of Amplifier B - matches Pin 2 in offset, bias, and CMRR specs; channel-to-channel offset match ≤2300µV. |
| 8 | +IN B | Non-inverting input of Amplifier B - identical performance to Pin 3; enables independent dual-amplifier configurations without interaction. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Operates with inputs from V– to V+, eliminating external level-shifting in single-supply 3V/5V systems. |
| Low input noise density | 12nV/√Hz enables high-resolution measurement of µV-level sensor outputs without added noise floor degradation. |
| High open-loop gain | 800V/mV minimum ensures <0.01% gain error in unity-gain buffers and precision integrators. |
| Overdrive protection | Integrated cross-coupled diodes prevent output polarity reversal when inputs exceed supplies by >700mV. |
| ESD robustness | 3kV HBM rating on all pins allows safe handling and assembly in standard electronics manufacturing environments. |
Applications
| Active Filters | Rail-to-Rail Buffer Amplifiers |
|---|---|
Use Scenario: 4th-order Butterworth low-pass filter for anti-aliasing before a 16-bit SAR ADC in portable medical instrumentation. IC Role / Device Role / Timing Role: Dual op amp configured as two 2nd-order Sallen-Key stages - one per LT1632CN8#PBF amplifier - providing precise pole placement and minimal passband ripple. Use Value: 45MHz GBW ensures filter response remains accurate up to 10× cutoff frequency; rail-to-rail output drives ADC reference input directly without clipping. | Use Scenario: Isolation buffer between a low-output-impedance DAC and a long PCB trace feeding multiple analog inputs in an industrial PLC module. IC Role / Device Role / Timing Role: Unity-gain follower (non-inverting) using Amplifier A; Amplifier B unused or configured as second buffer. Use Value: 35mA output drive sustains signal integrity over 50cm 50Ω trace; rail-to-rail input accepts full DAC swing (0–3.3V) without attenuation. |
| Driving A/D Converters | Battery-Powered Systems |
Use Scenario: Driving the input of a 1MSPS, 12-bit successive-approximation ADC in a handheld test meter with 3.3V supply. IC Role / Device Role / Timing Role: Single-supply non-inverting amplifier (gain = 2) with 3.3V rail, configured to center ADC input at 1.65V with full 0–3.3V swing. Use Value: 45V/µs slew rate settles 2V step within 400ns (0.01%), meeting ADC aperture time requirements; 4.3mA quiescent current extends battery life. | Use Scenario: Signal conditioning front-end for a lithium-ion battery fuel gauge IC in a wearable health monitor operating from a 3.7V nominal cell. IC Role / Device Role / Timing Role: Dual-channel amplifier: Channel A conditions thermistor voltage; Channel B buffers battery voltage divider for ADC monitoring. Use Value: 2.7V minimum supply allows operation down to 3.0V cell voltage; rail-to-rail input captures full 0–3.0V thermistor range without external biasing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1632CS8#PBF | Same die, SO-8 package; θJA = 190°C/W vs. 130°C/W for PDIP-8; no lead-forming required. | Better suited for automated SMT assembly and space-constrained PCBs; requires thermal derating at high ambient temperatures. | Select when board area and reflow compatibility outweigh through-hole serviceability needs. |
| OPA2333AIDR | Zero-drift architecture; 0.02µV/°C offset drift vs. 15µV/°C max for LT1632; lower 1/f noise but 350kHz GBW. | Ideal for ultra-stable DC-coupled sensor interfaces (e.g., load cells), not high-speed signal paths requiring >1MHz bandwidth. | Choose OPA2333AIDR only if sub-µV offset stability dominates over speed and drive strength. |
Compared with LT1632CS8#PBF, LT1632CN8#PBF offers superior thermal dissipation in free-air environments and mechanical robustness for manual soldering or field-replaceable modules; versus OPA2333AIDR, it trades zero-drift precision for 128× higher gain-bandwidth and 100× greater output current - making it optimal for dynamic, wideband, power-sensitive analog signal chains.
Availability
LT1632CN8#PBF is available at Aetrix Electronics and suitable for active filters, A/D converter driving, and battery-powered instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT1632CN8#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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LT1632 product line was developed by Linear Technology (acquired by ADI in 2017) to deliver precision, speed, and rail-to-rail operation in compact packages for demanding signal conditioning in portable and industrial equipment.
FAQ
What is the maximum supply voltage for LT1632CN8#PBF?
The absolute maximum total supply voltage (V+ to V–) for LT1632CN8#PBF is 36V. Operation beyond this risks permanent damage. For reliable long-term use, Analog Devices specifies a recommended maximum of ±15V (30V total) or 36V single supply, with thermal limits enforced via junction temperature monitoring (TJ ≤ 150°C).
Does LT1632CN8#PBF support true rail-to-rail input on a 3V single supply?
Yes. LT1632CN8#PBF guarantees rail-to-rail input common-mode range from V– (0V) to V+ (3V) on a 3V single supply, enabling direct interfacing with 3V logic outputs, resistive sensors, or DACs without external biasing networks or level shifters.
What is the typical input offset voltage of LT1632CN8#PBF at 25°C?
The typical input offset voltage of LT1632CN8#PBF at 25°C is less than 400µV, with a maximum guaranteed value of 1350µV across the full –40°C to +85°C operating temperature range - verified per the datasheet's "ELECTRICAL CHARACTERISTICS" table under VOS parameter.
Can LT1632CN8#PBF drive a 100Ω load effectively?
Yes. LT1632CN8#PBF delivers ≥35mA output current per amplifier, enabling direct drive of 100Ω loads at ±10V swing (100mA peak-to-peak). At 3V supply, output swing is limited to ~2.8Vpp into 100Ω, but remains functional for low-voltage interface applications.
Is LT1632CN8#PBF pin-compatible with other dual op amps in PDIP-8 packages?
LT1632CN8#PBF follows the industry-standard dual op amp 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), making it a drop-in replacement for legacy devices like LM358, TL072, and OP270 in PDIP-8 footprints - provided rail-to-rail input/output and 45MHz GBW requirements align with system needs.
LT1632CN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1632CN8#PBF FAQ
1.How can I place an order for LT1632CN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1632CN8#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 LT1632CN8#PBF reliable?
The price and inventory of LT1632CN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1632CN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1632CN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1632CN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1632CN8#PBF?
LT1632CN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1632CN8#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 LT1632CN8#PBF?
For technical support, including LT1632CN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1632CN8#PBF requirements.
6.How does Aetrix verify that LT1632CN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1632CN8#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 LT1632CN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1632CN8#PBF?
All LT1632CN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1632CN8#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 LT1632CN8#PBF part is unused and in its original packaging.
Return procedure for LT1632CN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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