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Analog Devices Inc. LTC6702HDC#TRPBF
- Part No.:
- LTC6702HDC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6702HDC#TRPBF.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,962
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Product details
Overview
LTC6702HDC#TRPBF from Analog Devices (formerly Linear Technology) is a dual micropower rail-to-rail comparator with internal hysteresis, designed for battery-powered systems requiring low supply voltage (1.7V–5.5V), ultra-low quiescent current (30μA per comparator max), and fast propagation delay (500ns max over –40°C to 125°C). It operates in the 2mm × 2mm DFN package and supports threshold detection, clock regeneration, and window comparison in space-constrained industrial and automotive sensing applications.
For engineers reviewing the LTC6702HDC#TRPBF datasheet, LTC6702HDC#TRPBF pinout, LTC6702HDC#TRPBF application, or LTC6702HDC#TRPBF equivalent, key selection criteria include guaranteed –40°C to 125°C operation, 4mV typical internal hysteresis, CMOS-compatible output drive (±15mA), input range extending 100mV below ground, and 3.2MHz toggle frequency capability.
Technical Context
The LTC6702HDC#TRPBF integrates two independent comparators with push-pull CMOS outputs, each featuring built-in 4mV hysteresis to suppress noise-induced oscillation on slow-moving or noisy inputs. Its input stage uses CMOS technology enabling high-impedance interfacing (input leakage ≤1nA at 125°C) and common-mode range from –0.1V to V+ – 1.2V.
Propagation delay is tightly specified at ≤500ns across full temperature range with 200mV input step and 50mV overdrive; differential skew between channels is ≤4ns. The device requires no external pull-up resistors and drives capacitive loads up to 10,000pF while maintaining stable transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.7V to 5.5V - enables direct operation from single-cell Li-ion, 3.3V, or 5V rails without regulation |
| Quiescent Current | 30μA per comparator max - extends battery life in always-on monitoring circuits |
| Propagation Delay | 500ns max (–40°C to 125°C) - supports timing-critical edge detection up to 3.2MHz toggle rate |
| Input Hysteresis | 4mV typical - eliminates need for external positive feedback in noisy environments |
| Input Common-Mode Range | –0.1V to V+ – 1.2V - allows sub-ground signal detection and rail-to-rail input flexibility |
| Output Drive Strength | ±15mA (–40°C to 125°C) - directly interfaces TTL/CMOS logic without external buffers |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive and industrial control environments |
Pinout & Package
Package: 8-lead (2mm × 2mm) plastic DFN with exposed pad (Pin 9 = GND, must be soldered to PCB). Height: 0.75mm max. JEDEC-compliant footprint per LTC DWG #05-08-1719 Rev A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT A (Pin 1) | Comparator A output | Push-pull CMOS output capable of ±15mA drive; swings within 250mV of GND and 350mV of V+ |
| –IN A (Pin 2) | Inverting input A | CMOS input with leakage ≤1nA at 125°C; accepts voltages down to –0.1V |
| +IN A (Pin 3) | Noninverting input A | CMOS input with same voltage range and leakage as –IN A |
| GND (Pin 4) | Ground reference | Primary ground connection; exposed pad (Pin 9) is electrically tied to this node |
| +IN B (Pin 5) | Noninverting input B | Independent second comparator input; identical specs to +IN A |
| –IN B (Pin 6) | Inverting input B | Independent second comparator input; identical specs to –IN A |
| OUT B (Pin 7) | Comparator B output | Functionally identical to OUT A; differential skew ≤4ns vs OUT A |
| V+ (Pin 8) | Positive supply | Single supply input; bypass capacitor (≥0.1μF) required between V+ and GND |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail CMOS outputs | Eliminates need for external pull-up resistors and supports direct interface to 1.8V/3.3V/5V logic families |
| Internal 4mV hysteresis | Prevents chatter on slow or noisy inputs without external components or layout changes |
| Sub-ground input capability | Accepts signals down to –0.1V, enabling level-shifted or bipolar-sense applications without clamping diodes |
| Low-temperature drift | Input offset drift ≤6μV/°C ensures stable trip points across –40°C to 125°C |
| Capacitive load tolerance | Stable operation with loads up to 10,000pF avoids added RC filtering or buffer stages |
Applications
| Battery Voltage Monitoring | Window Comparator for Sensor Thresholds |
|---|---|
Use Scenario: Detecting low-battery condition in portable medical devices using a single-cell Li-ion (2.8V cutoff) and backup coin cell (2.1V cutoff). IC Role / Device Role / Timing Role: Dual comparator independently monitors two voltage thresholds; OUTA and OUTB assert low when respective thresholds are crossed. Use Value: Enables dual-level alerting with one IC, reducing BOM count and PCB area versus discrete solutions. | Use Scenario: Validating thermistor output stays within safe operating band (e.g., 15°C–45°C) in HVAC control units. IC Role / Device Role / Timing Role: Configured as window comparator with hysteresis to reject sensor noise and prevent false trips during temperature drift. Use Value: Internal hysteresis eliminates need for external feedback resistors, simplifying design and improving long-term stability. |
| Clock Regeneration in Low-Power Receivers | Current Sensing Alarm in Motor Drives |
Use Scenario: Recovering clean digital clock from attenuated or distorted analog clock input in wireless sensor nodes. IC Role / Device Role / Timing Role: One comparator regenerates rising edge, the other falling edge; combined to reconstruct full-clock waveform. Use Value: 500ns max propagation delay and 3.2MHz toggle rate support reliable clock recovery at multi-MHz frequencies. | Use Scenario: Monitoring phase currents in BLDC motor drivers to trigger overcurrent shutdown before MOSFET failure. IC Role / Device Role / Timing Role: Dual comparator compares amplified shunt voltage against two thresholds (2.5A and 5.0A) for tiered fault response. Use Value: Simultaneous dual-threshold detection enables fast, graded protection without microcontroller intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT6700HMS8-2#TRPBF | Integrated 400mV reference; wider supply range (1.4V–18V); slower propagation (18μs); SOT-23-8 package | Eliminates external reference but trades speed for integration; unsuitable for >100kHz timing | Select when reference integration outweighs speed requirements and board space permits larger SOT-23 footprint |
| LTC1442CMS8#TRPBF | Ultralow power (5.7μA/comparator); open-drain outputs; includes 1.182V reference; 8μs propagation delay | Optimized for nanowatt standby; requires pull-ups; too slow for clock regeneration or fast sensing | Select only for battery-life-critical applications where speed <10kHz and open-drain interface is acceptable |
Compared with LTC6702HDC#TRPBF, LT6700HMS8-2#TRPBF offers integrated reference at the cost of 36× slower response, while LTC1442CMS8#TRPBF reduces supply current by 85% but sacrifices 16× propagation speed and output drive capability - making LTC6702HDC#TRPBF optimal for high-speed, rail-to-rail, micropower dual-comparator use cases.
Availability
LTC6702HDC#TRPBF is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive sensor interfaces, industrial process monitors, and portable medical devices requiring stable component supply across extended temperature ranges.
Supply support for LTC6702HDC#TRPBF 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. (acquired Linear Technology in 2017) designs precision analog, mixed-signal, and power management ICs for high-reliability applications in industrial, automotive, and communications markets.
The LTC6702 product line delivers ultra-small, micropower dual comparators optimized for space-constrained, battery-operated systems needing robust performance across –40°C to 125°C.
FAQ
What is the maximum guaranteed propagation delay for LTC6702HDC#TRPBF across its full operating temperature range?
The LTC6702HDC#TRPBF has a maximum guaranteed propagation delay of 500ns over the full –40°C to 125°C temperature range, measured with a 200mV input step and 50mV overdrive into a 10pF load at 25°C. This specification is explicitly validated for the H-grade version and applies across all supply voltages from 1.7V to 5.5V.
Does LTC6702HDC#TRPBF require external pull-up resistors on its outputs?
No, LTC6702HDC#TRPBF does not require external pull-up resistors. Its outputs are push-pull CMOS stages capable of sourcing and sinking up to ±15mA, with guaranteed low-level output voltage ≤250mV and high-level output voltage ≥V+ – 350mV under load. This enables direct interfacing to TTL and CMOS logic families without additional components.
Can LTC6702HDC#TRPBF accept input voltages below ground, and if so, how far?
Yes, LTC6702HDC#TRPBF accepts input voltages down to –0.1V (100mV below ground) while maintaining guaranteed functionality and proper output behavior. Inputs driven further negative than –0.1V will not cause damage if input current is limited to ≤10mA, thanks to integrated ESD protection diodes - a feature confirmed in the Absolute Maximum Ratings and Applications Information sections.
What is the purpose of the exposed pad (Pin 9) on the LTC6702HDC#TRPBF DFN package?
The exposed pad (Pin 9) on the LTC6702HDC#TRPBF is electrically connected to GND and must be soldered to the PCB ground plane. It serves as the primary thermal path to dissipate heat and improves thermal resistance (θJA = 102°C/W). Per the package drawing, failure to solder this pad degrades thermal performance and may compromise long-term reliability under sustained load conditions.
How does the internal hysteresis of LTC6702HDC#TRPBF affect threshold accuracy?
The internal hysteresis of LTC6702HDC#TRPBF is approximately 4mV, meaning the actual switching thresholds differ by ±2mV around the nominal trip point. Output switching occurs within ±2.2mV of the reference voltage plus input offset voltage. This intentional hysteresis prevents oscillation on noisy or slowly varying inputs - a design trade-off that enhances stability at the expense of absolute threshold precision, which is documented in Note 5 of the Electrical Characteristics table.
LTC6702HDC#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-WFDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- CMOS, Push-Pull, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±):
- 1.7V ~ 5.5V
- :
- 3.5mV @ 3V
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 32µA
- Current - Quiescent (Max):
- 70dB CMRR, 65dB PSRR
- CMRR, PSRR (Typ):
- 450ns
- Propagation Delay (Max):
- 8.2mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-DFN (2x2)
LTC6702HDC#TRPBF FAQ
1.How can I place an order for LTC6702HDC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6702HDC#TRPBF 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 LTC6702HDC#TRPBF reliable?
The price and inventory of LTC6702HDC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6702HDC#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6702HDC#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6702HDC#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6702HDC#TRPBF?
LTC6702HDC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6702HDC#TRPBF 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 LTC6702HDC#TRPBF?
For technical support, including LTC6702HDC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6702HDC#TRPBF requirements.
6.How does Aetrix verify that LTC6702HDC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6702HDC#TRPBF 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 LTC6702HDC#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6702HDC#TRPBF?
All LTC6702HDC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6702HDC#TRPBF, 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 LTC6702HDC#TRPBF part is unused and in its original packaging.
Return procedure for LTC6702HDC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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