ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC COMPARATOR 2 W/VOLT REF 8SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：with Voltage Reference
- Number of Elements：2
- Output Type：Open-Drain
- Voltage - Supply, Single/Dual (±)：2.5V ~ 11V, ±1.25V ~ 5.5V
- Voltage - Input Offset (Max)：10mV @ 5V
- Current - Input Bias (Max)：-
- Current - Output (Typ)：-
- Current - Quiescent (Max)：5.7µA
- CMRR, PSRR (Typ)：80dB CMRR, 80dB PSRR
- Propagation Delay (Max)：12µs
- Hysteresis：50mV
- 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：-
Download product information
Overview
The LTC1842IS8#TRPBF is an ultralow power dual comparator with a built-in 1.182V ±1% reference, housed in an 8-lead SOIC package. It operates from a single 2.5V to 11V supply or dual ±1.25V to ±5.5V supply. Key electrical parameters include a typical supply current of 3.5µA (max 5.7µA), input offset voltage of ±3mV (max ±10mV), and propagation delay of 12µs at 10mV overdrive. The open-drain outputs can sink greater than 20mA, and the device supports programmable hysteresis via the HYST pin.
Feature Summary
- Integrates a precise 1.182V bandgap reference output capable of driving bypass capacitors up to 0.01µF without oscillation.
- Features open-drain outputs that typically sink greater than 20mA while eliminating cross-conduction current spikes during state changes.
- Allows adjustable hysteresis through external resistors connected to the dedicated HYST pin, with a maximum hysteresis voltage band of 100mV.
Applications
- Battery-powered system monitoring
- Threshold detectors
- Window comparators
- Oscillator circuits
Procurement Notes
Verify the specific suffix TRPBF indicates tape-and-reel packaging when sourcing components. Confirm the 'I' grade designation for the -40°C to 85°C industrial temperature range. Ensure compatibility with the required single or dual supply voltage specifications before integration into the design.
Selection Notes
Select this component for applications requiring minimal quiescent current and integrated reference functionality. The wide common-mode input range extending to the negative supply simplifies interface design. Consider the open-drain output configuration for level shifting or wire-OR logic requirements in low-power systems.
Part Context
This part belongs to the LTC1841/LTC1842/LTC1843 family of ultralow power dual comparators. While the LTC1841 lacks a reference, the LTC1842 and LTC1843 variants include the internal 1.182V reference. The IS8 suffix denotes the industrial temperature range and the 8-lead plastic small outline package format used by Analog Devices.
Replacement Considerations
LTC1842CS8: Identical electrical performance but rated for commercial temperature range (0°C to 70°C).
FAQ
How is hysteresis programmed on the LTC1842?
Hysteresis is set using two external resistors connected between the REF and HYST pins. The maximum hysteresis voltage band achievable is 100mV.
What is the maximum capacitance the reference output can drive directly?
The reference output can drive a bypass capacitor of up to 0.01µF directly without oscillation. Larger capacitors require a series damping resistor.
