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Product Detailed Parameters
- Description：IC COMPARATOR 1 GEN PUR 8SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：General Purpose
- Number of Elements：1
- Output Type：Open-Collector
- Voltage - Supply, Single/Dual (±)：3V ~ 36V, ±1.5V ~ 18V
- Voltage - Input Offset (Max)：0.75mV @ ±15V
- Current - Input Bias (Max)：0.035µA @ ±15V
- Current - Output (Typ)：50mA
- Current - Quiescent (Max)：4mA
- CMRR, PSRR (Typ)：115dB CMRR
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-SO
- Grade：-
- Qualification：-
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Overview
The LT1011AIS8#TRPBF is a general-purpose voltage comparator manufactured by Analog Devices Inc. It features an open-collector output capable of sourcing or sinking 50mA. The device operates on a single supply from 3V to ±18V (up to 36V total) and supports differential input voltages up to ±30V. Key electrical specifications include a maximum response time of 250ns, a guaranteed maximum input offset voltage of 0.75mV, and a maximum input bias current of 35nA. It provides a minimum large-signal voltage gain of 200,000 V/V and a common-mode rejection ratio of 115dB. The component is housed in an 8-lead SOIC package and operates within a temperature range of -40°C to +85°C.
Feature Summary
- Pin compatible with LM111 series devices while offering significantly improved input characteristics including lower bias current and offset voltage.
- Features a floating transistor output that allows driving loads referenced to ground, negative supply, or positive supply independently.
- Includes a strobe input pin to force the output transistor into an off state for precise timing control.
- Capable of operating fully specified on a single 5V supply without loss in speed.
Applications
- SAR A/D Converters
- Voltage-to-Frequency Converters
- Precision RC Oscillators
- Peak Detectors
- Motor Speed Control
Procurement Notes
Verify the specific suffix TRPBF indicates tape and reel packaging when ordering. Confirm the AI grade corresponds to the required industrial temperature range of -40°C to +85°C. Ensure the 8-lead SOIC package dimensions match the PCB footprint requirements. Check for RoHS compliance status if environmental regulations apply to the final assembly.
Selection Notes
Select this component when pin compatibility with LM111 is required but superior DC accuracy and speed are needed. It is suitable for applications demanding low input bias current and high common-mode rejection. Consider the open-collector output topology for flexible load referencing. Verify that the 50mA output current capability meets the drive requirements of the downstream circuitry.
Part Context
This part belongs to the LT1011 family of general-purpose voltage comparators. It is designed as a direct replacement for the LM111 series with enhanced performance metrics. The LT1011A variant specifically guarantees tighter tolerances for offset voltage and drift compared to the standard LT1011. It is widely used in precision analog signal processing and timing circuits.
Replacement Considerations
Public confirmed substitute: LM111H/NOPB (Texas Instruments). Note that while pin-compatible, the LM111 has different electrical specifications regarding offset voltage and bias current.
