My Inquiry
My Account
Analog Devices Inc. LT1011AIS8#PBF
- Part No.:
- LT1011AIS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1011AIS8#PBF.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:10,010
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1011AIS8#PBF from Analog Devices (formerly Linear Technology) is a precision voltage comparator with open-collector output, designed for high-accuracy threshold detection in single-supply and dual-supply systems. It delivers guaranteed max 0.5mV input offset voltage, 25nA input bias current, 250ns response time, and 200,000 voltage gain - enabling reliable operation in 12-bit SAR A/D converters, precision RC oscillators, and motor speed control circuits.
For engineers reviewing the LT1011AIS8#PBF datasheet, LT1011AIS8#PBF pinout, LT1011AIS8#PBF application, or LT1011AIS8#PBF equivalent, key selection criteria include its –40°C to +85°C industrial temperature range, 8-lead SOIC package, differential input voltage tolerance up to ±30V, and compatibility with 3V to ±18V supply rails - all critical for noise-immune line synchronization and peak detector designs.
Technical Context
The LT1011AIS8#PBF implements a bipolar input stage with floating transistor output capable of 50mA sink/source, supporting load referencing to ground, positive, or negative supplies. Its internal architecture guarantees DC performance across full temperature range and enables stable operation on single 5V supply - unlike legacy LM111 - with fully specified response time under 5mV overdrive.
It features two dedicated pins (Pin 5 BALANCE and Pin 6 BALANCE/STROBE) for offset trimming, hysteresis injection, or strobe control via current-driven input (≥500µA). The output transistor is truly floating: collector can be biased up to 40V above V–, and emitter operates independently between V+ and V–, allowing flexible load configurations without polarity inversion constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | Max 0.5mV - ensures ≤0.5mV decision error at zero-differential input, critical for 12-bit ADC reference thresholds. |
| Input Bias Current | Max 25nA - minimizes voltage drop across high-impedance sensor sources (e.g., thermocouples, photodiodes). |
| Response Time | Max 250ns at 5mV overdrive - supports >1MHz sampling in voltage-to-frequency converters and pulse generators. |
| Supply Range | Single 5V or dual ±3V to ±18V - enables direct integration into 5V microcontroller systems and ±15V analog signal chains. |
| Differential Input Voltage | ±30V - allows direct clamping to rails with diodes, supporting wide-range industrial sensor interfaces. |
| Output Sink/Source | 50mA - drives relays, lamps, TTL/CMOS inputs, or optocouplers without external buffers. |
| Operating Temperature | –40°C to +85°C - qualified for industrial motor control, power supply monitoring, and embedded instrumentation. |
Pinout & Package
LT1011AIS8#PBF is housed in an 8-lead plastic SOIC (S8) package with standard JEDEC MS-012AC outline, 1.27mm pitch, and 5.0mm × 6.2mm body size. Thermal resistance θJA = 150°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1: GND | Ground reference terminal | Provides common return path for internal circuitry; used as emitter output when configured for ground-referenced loads. |
| Pin 2: INPUT+ | Non-inverting input | Accepts positive-going threshold signals; common-mode range extends to within 300mV of V– and 1.5V below V+. |
| Pin 3: INPUT– | Inverting input | Accepts reference or feedback signals; differential input voltage up to full supply rails permitted. |
| Pin 4: V– | Negative supply rail | Supports single-supply (0V) or dual-supply (e.g., –15V) operation; defines lower bound for common-mode and output swing. |
| Pin 5: BALANCE | Offset trim / hysteresis injection | Adjusts input offset voltage or adds DC hysteresis; requires 0.1µF bypass to Pin 6 if unused. |
| Pin 6: BALANCE/STROBE | Strobe control / offset trim | Current-driven (≥500µA) input forces output transistor OFF; also used for offset adjustment or AC hysteresis. |
| Pin 7: OUTPUT | Open-collector output | Collector node of internal NPN transistor; sinks up to 50mA; requires external pull-up to define logic HIGH level. |
| Pin 8: V+ | Positive supply rail | Supports up to +18V; powers input stage and output transistor; defines upper bound for common-mode and output swing. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed 0.5mV max offset voltage | Enables sub-1mV threshold accuracy in precision window detectors and peak-hold circuits without calibration. |
| 25nA max input bias current | Permits use with megohm-level source impedances (e.g., RC timing networks, piezoelectric sensors) without significant error. |
| 250ns max response time | Supports fast edge detection in motor commutation, pulse-width modulation, and digital clock recovery applications. |
| Fully specified for single 5V operation | Eliminates need for dual supplies in microcontroller-based systems, reducing BOM count and PCB area. |
| ±30V differential input voltage rating | Allows direct interfacing to unconditioned industrial signals (e.g., 24V PLC outputs, transformer-coupled AC lines). |
| 50mA output sink capability | Directly drives electromechanical relays, LED arrays, or MOSFET gates without external driver stages. |
Applications
| Motor Speed Control | Voltage-to-Frequency Conversion |
|---|---|
|
Use Scenario: Regulating DC motor RPM using tachometer feedback against a precision reference voltage. IC Role / Device Role / Timing Role: Comparator compares tach signal to reference; output toggles H-bridge enable to maintain setpoint. Use Value: 0.5mV offset and 25nA bias current ensure <0.01% speed error over temperature, even with high-impedance tach coils. |
Use Scenario: Converting analog sensor output (e.g., pressure, temperature) into proportional frequency for noise-immune transmission. IC Role / Device Role / Timing Role: Forms core of integrator-comparator oscillator; LT1011AIS8#PBF triggers reset when integrator crosses threshold. Use Value: 250ns propagation delay and low drift enable stable 10kHz–100kHz output with <0.1% linearity error. |
| Precision RC Oscillator | Peak Detector |
|
Use Scenario: Generating low-drift clock signals for data acquisition systems using resistor-capacitor timing network. IC Role / Device Role / Timing Role: Comparator detects capacitor voltage crossing reference; controls charge/discharge cycle. Use Value: Input offset drift of 15µV/°C and negligible bias current contribution yield <50ppm/°C frequency stability. |
Use Scenario: Capturing maximum amplitude of fast transient signals (e.g., ultrasound pulses, spark ignition waveforms). IC Role / Device Role / Timing Role: Comparator enables diode-based sample-and-hold; output latches peak voltage onto hold capacitor. Use Value: 250ns response time captures 4MHz transients; 50mA sink drives hold capacitor charging rapidly without droop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM311DR | Higher 7.5mV max offset, 250nA bias current, slower 200ns typical (not guaranteed), no single-5V guarantee. | Limited to less demanding industrial controls; unsuitable for 12-bit ADC references or precision oscillators. | Choose LM311DR only for cost-sensitive, non-critical threshold detection where 10× higher offset is acceptable. |
| TLV3501CDR | CMOS input (0.5pA bias), 4.5ns response, but only 2.7–5.5V supply range and 20mA output drive. | Better for ultra-low-power, high-speed digital interfacing; cannot replace LT1011AIS8#PBF in ±15V analog systems or relay drivers. | Select TLV3501CDR when operating strictly from 3.3V/5V rails and requiring nanosecond response - not for industrial bipolar supply environments. |
Compared with LM311DR and TLV3501CDR, the LT1011AIS8#PBF uniquely balances precision (0.5mV offset), robustness (±30V input, 50mA drive), and wide supply flexibility (3V to ±18V), making it irreplaceable in mixed-signal industrial designs requiring both accuracy and ruggedness.
Availability
LT1011AIS8#PBF is available at Aetrix Electronics and suitable for motor speed control, voltage-to-frequency conversion, and precision RC oscillator applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT1011AIS8#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 LT1011AIS8#PBF belongs to ADI's legacy Linear Technology precision comparator family, engineered for high-accuracy threshold detection in measurement, control, and data conversion systems where offset, drift, and speed must coexist.
FAQ
What is the guaranteed maximum input offset voltage for LT1011AIS8#PBF?
The LT1011AIS8#PBF has a guaranteed maximum input offset voltage of 0.5mV across its full operating temperature range of –40°C to +85°C. This specification is explicitly stated in the Electrical Characteristics table for the LT1011AI grade and applies under all supply conditions from single 5V to ±15V. This tight offset enables accurate threshold setting in applications like 12-bit A/D converters and precision peak detectors where sub-millivolt errors directly impact system resolution.
Can LT1011AIS8#PBF operate from a single 5V supply?
Yes, the LT1011AIS8#PBF is fully specified for single 5V supply operation - a key differentiator from the LM111. Its input common-mode range extends from 0.5V to 3V (i.e., 300mV above ground to 1.5V below V+), and its output saturation voltage remains guaranteed at ISINK = 8mA. This allows direct interface with 5V microcontrollers and eliminates the need for dual supplies in battery-powered or embedded instrumentation designs using the LT1011AIS8#PBF.
What is the function of Pin 6 (BALANCE/STROBE) on LT1011AIS8#PBF?
Pin 6 on the LT1011AIS8#PBF serves dual functions: as a strobe input to force the output transistor OFF (providing a high-impedance or "hi" collector state), and as an offset adjustment terminal. Strobing requires sinking ≥500µA (up to 5mA for minimal delay); offset trimming uses current injection to shift input offset voltage by ~0.5mV per µA. The pin must never be shorted to ground - it is current-driven only - and leakage >0.2µA during non-strobe periods causes measurable offset shifts.
Does LT1011AIS8#PBF support differential input voltages beyond the supply rails?
Yes, the LT1011AIS8#PBF supports a guaranteed ±30V differential input voltage, independent of supply voltage magnitude. This allows inputs to be clamped to the supply rails using external diodes without risk of damage, enabling safe interfacing with high-voltage industrial signals (e.g., 24V PLC outputs, transformer-isolated AC lines) while maintaining correct comparator behavior - a feature confirmed in Absolute Maximum Ratings and Applications Information sections of the official datasheet.
What is the maximum output sink current for LT1011AIS8#PBF?
The LT1011AIS8#PBF provides a guaranteed 50mA output sink current capability at the collector (Pin 7), verified across its full temperature range. This allows direct driving of relays, lamps, optocouplers, and logic inputs without external buffer transistors. The output transistor is floating, meaning the emitter (Pin 1) can also serve as an output node when referenced to V– or ground - though polarity reverses relative to the collector output configuration.
LT1011AIS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 3V ~ 36V, ±1.5V ~ 18V
- :
- 0.75mV @ ±15V
- Voltage - Input Offset (Max):
- 0.035µA @ ±15V
- Current - Input Bias (Max):
- 50mA
- Current - Output (Typ):
- 4mA
- Current - Quiescent (Max):
- 115dB CMRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SO
LT1011AIS8#PBF FAQ
1.How can I place an order for LT1011AIS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1011AIS8#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 LT1011AIS8#PBF reliable?
The price and inventory of LT1011AIS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1011AIS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1011AIS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1011AIS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1011AIS8#PBF?
LT1011AIS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1011AIS8#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 LT1011AIS8#PBF?
For technical support, including LT1011AIS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1011AIS8#PBF requirements.
6.How does Aetrix verify that LT1011AIS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1011AIS8#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 LT1011AIS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1011AIS8#PBF?
All LT1011AIS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1011AIS8#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 LT1011AIS8#PBF part is unused and in its original packaging.
Return procedure for LT1011AIS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1011AIS8#PBF Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
