LT1720CMS8#TRPBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LT1720CMS8 is a dual high-speed comparator with push-pull outputs operating from 3 V or 5 V supplies in an MSOP-8 package. It delivers 4.5 ns propagation delay with 6 µA input bias current and 4.5 mV maximum offset voltage. Available from stock worldwide with fast shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LT1720CMS8#TRPBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.3000(MOQ 19)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual comparator with 4.5 ns propagation delay enabling high-speed threshold detection at clock rates above 100 MHz
- Push-pull CMOS output compatible with 3 V and 5 V logic for direct interfacing without pull-up resistors
- 6 µA input bias current and 4.5 mV offset voltage maintaining accuracy in moderate-impedance signal conditioning circuits
- MSOP-8 small-outline package reducing board footprint by 50% versus standard SOIC-8 in space-constrained designs
Applications
The LT1720CMS8 is used in high-speed line receivers, zero-crossing detectors, and clock generation circuits where 4.5 ns propagation delay and dual comparator channels enable precise timing decisions at signal rates above 50 MHz. Its push-pull output drives logic gates and flip-flops directly without open-drain pull-up resistors, simplifying design of peak detectors, window comparators, and ADC clock conditioning networks. It also suits disk drive read channel electronics and optical receiver front-ends requiring fast signal qualification on 3.3 V or 5 V supply rails.
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 Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| 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 | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) - annealed |
| 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 the LT1720CMS8, and how does it affect high-speed circuit design?
The LT1720CMS8 has a propagation delay of 4.5 ns, allowing it to resolve threshold crossings and generate valid logic outputs at signal rates exceeding 100 MHz. In a zero-crossing detector or clock recovery circuit, this delay budget leaves sufficient margin for downstream flip-flop setup times at 50 MHz to 200 MHz system clock rates, unlike general-purpose comparators with delays above 50 ns.
Does the LT1720CMS8 require external pull-up resistors for its outputs?
No. The LT1720CMS8 uses push-pull CMOS output drivers that actively source and sink current to both supply rails (3 V or 5 V). This eliminates the external pull-up resistors required by open-drain or open-collector comparators, reducing BOM by 2 resistors per channel and improving output rise times to below 2 ns on capacitive loads up to 10 pF.
For a window comparator design, how does using both channels of the LT1720CMS8 reduce component count?
A window comparator requires 2 threshold comparators whose outputs are combined to flag when a signal is within an upper and lower voltage bound. Using both channels of the single LT1720CMS8 integrates both comparators into one 8-pin MSOP package, saving 1 IC, 4 passive components, and approximately 20 mm² of board space compared to using 2 separate single-channel comparator ICs in SOT-23 packages.
How does the LT1720CMS8 input bias current of 6 µA affect source impedance selection?
At 6 µA input bias current, a source impedance of 1 kΩ introduces a 6 mV additional offset voltage error at the comparator input, which exceeds the 4.5 mV maximum offset spec and doubles the worst-case threshold error. Designers should keep source impedance below 500 Ω, or use a buffer stage if the source exceeds this limit to maintain threshold accuracy within ±10 mV across the full operating temperature range.
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About Analog Devices
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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| 1000+ | $5.3000 | $5300.00 |
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