LT1720IMS8#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LT1720IMS8#PBF is a dual high-speed comparator operating from 3 V or 5 V single supply with 4.5 ns propagation delay and push-pull outputs. Features 4.5 mV maximum input offset voltage in a compact MSOP-8 package. In stock worldwide with fast shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LT1720IMS8#PBF Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual comparator with 4.5 ns propagation delay and push-pull output, enabling high-speed signal detection and zero-crossing applications at 3 V or 5 V supply
- Rail-to-rail compatible push-pull outputs with no pull-up resistors required, simplifying interface to TTL and CMOS logic families at 3.3 V and 5 V
- MSOP-8 package with 6 µA maximum bias current allows two independent high-speed comparison channels in minimal board space for battery-powered equipment
Applications
The LT1720IMS8#PBF is used in high-speed signal level detection, clock recovery circuits, and line receiver applications where sub-5 ns response time is required from a compact dual comparator. Its push-pull output structure and 3 V to 5 V supply compatibility make it well suited for data communications, ADC over-range detection, and precision window comparator designs. The device is also employed in switching power supply control loops and motor commutation zero-crossing detectors requiring fast analog signal thresholding.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1660 |
| YTEOL | 10 |
| Amplifier Type | COMPARATOR |
| Average Bias Current-Max (IIB) | 6 µA |
| Input Offset Voltage-Max | 4500 µV |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 2 |
| Output Type | PUSH-PULL |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Response Time-Nom | 7ns |
| Supply Current-Max | 14mA |
| Supply Voltage Limit-Max | 7V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the propagation delay of LT1720IMS8#PBF and what clock frequency can it reliably detect in a zero-crossing application?
The LT1720IMS8#PBF has a typical propagation delay of 4.5 ns, allowing reliable zero-crossing detection for signals up to approximately 100 MHz when overdrive is applied. Both channels operate independently, so the dual comparator can monitor two separate signal paths simultaneously from a 3 V or 5 V supply without mutual timing interference in high-speed clock detection circuits.
How does the push-pull output of LT1720IMS8#PBF simplify interfacing to 3.3 V CMOS logic compared to open-collector comparator outputs?
The LT1720IMS8#PBF provides push-pull outputs that actively drive both logic high and logic low without any external pull-up resistor, unlike open-collector devices that require a resistor to set the high-state voltage level. This reduces BOM by 2 resistors per dual comparator and improves high-to-low and low-to-high transition symmetry, which is important in 3.3 V CMOS applications at frequencies above 10 MHz where RC time constants from pull-up resistors would degrade edge speed.
What input offset voltage does LT1720IMS8#PBF specify, and how does this affect threshold accuracy in a 1 V window comparator design?
The LT1720IMS8#PBF specifies a maximum input offset voltage of 4500 µV (4.5 mV). In a 1 V window comparator where both channels set the upper and lower bounds, offset contributes at most 4.5 mV of threshold error per channel, totalling up to 9 mV combined window error in the worst case. For applications requiring tighter than 1% accuracy on a 1 V window, an external trim or auto-zero technique may be needed, but for typical signal detect applications the 4.5 mV limit is acceptable.
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Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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