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Analog Devices Inc. LTC6752IUD-3#PBF
- Part No.:
- LTC6752IUD-3#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 12-WFQFN Exposed Pad
- Datasheet:
-
LTC6752IUD-3#PBF.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:915
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Product details
Overview
LTC6752IUD-3#PBF from Analog Devices is a high-speed rail-to-rail input comparator with CMOS outputs, 2.9ns propagation delay, 280MHz toggle rate, and 4.5ps RMS jitter (100MHz input). It features separate input/output supplies (2.45–5.25V VCC, 1.71–3.5V VDD), adjustable hysteresis via LE/HYST pin, complementary outputs, and latch functionality - optimized for clock/data recovery and time-of-flight measurement circuits.
For engineers reviewing the LTC6752IUD-3#PBF datasheet, LTC6752IUD-3#PBF pinout, LTC6752IUD-3#PBF application, or LTC6752IUD-3#PBF equivalent, this device delivers sub-3ns timing precision, ±22mA output drive, rail-to-rail input operation beyond both rails, and guaranteed performance from –40°C to +85°C in a 12-lead 3mm × 3mm QFN package.
Technical Context
The LTC6752IUD-3#PBF implements a dual-supply architecture with independent VCC/VEE (input stage) and VDD/VEE (output stage), enabling direct interfacing to 1.8V logic while accepting inputs up to 5.25V. Its differential input stage achieves 50–70dB CMRR across the full common-mode range (VEE – 0.2V to VCC + 0.1V).
It integrates latching and user-adjustable hysteresis via the LE/HYST pin (1.05–1.45V open-circuit voltage, 15–25kΩ input resistance), supporting precise threshold control and noise immunity. Propagation delay skew is limited to 400ps, and overdrive dispersion remains at 1.8ns across 10–125mV overdrive - critical for deterministic timing in high-frequency sampling systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 2.9ns typical (50mV overdrive); enables <3.5ns timing budget in 280MHz toggle-rate systems |
| Toggle Rate | 280MHz maximum; supports high-speed serial line receivers and clock recovery up to OC-48 rates |
| Rise/Fall Time | 1.2ns (10%–90%); ensures clean CMOS-compatible transitions into 5pF loads |
| Input Offset Voltage | ±1.2mV max; maintains <1 LSB error in 12-bit ADC front-end threshold detection |
| Output Drive | ±22mA sink/source; directly drives 50Ω transmission lines or fan-out to multiple 1.8V logic gates |
| Supply Range | VCC/VEE: 2.45–5.25V; VDD/VEE: 1.71–3.5V; allows mixed-voltage system integration |
| Jitter (RMS) | 4.5ps at 100MHz input; meets stringent phase-noise requirements in SERDES clocking |
Pinout & Package
Package: 12-lead (3mm × 3mm) plastic QFN with exposed VEE pad (Pin 13), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 Q | True output | CMOS output referenced to VDD; sinks/sourced ±22mA; complements Q̅ |
| 2 VEE | Negative supply | Ground reference for both input and output stages; must be connected to PCB ground plane |
| 3 VDD | Output supply | Powers CMOS output stage; sets logic-high level (e.g., 1.8V for LVCMOS compatibility) |
| 4 VCC | Input supply | Powers input differential pair; supports up to 5.25V for wide dynamic range sensing |
| 5 VEE | Negative supply (duplicate) | Second connection to VEE for low-inductance return path; ties to same net as Pin 2 |
| 6 LE/HYST | Latch enable / hysteresis adjust | Configures latch mode (VIL ≤ 0.3V) or sets hysteresis (0–40mV via external voltage) |
| 7 SHDN | Shutdown control | Active-low; reduces total current to <1µA when pulled low; wake-up time = 100ns |
| 8 Q̅ | Complementary output | Inverted CMOS output; enables differential signaling or XOR-based edge detection |
| 9 NC | No connect | Internally unused; must remain unconnected or grounded per layout guidelines |
| 10 +IN | Non-inverting input | Rail-to-rail capable (VEE – 0.2V to VCC + 0.1V); 1.1pF input capacitance minimizes loading |
| 11 NC | No connect | Internally unused; must remain unconnected or grounded per layout guidelines |
| 12 –IN | Inverting input | Differential partner to +IN; matched bias current (<±0.75µA offset) ensures common-mode rejection |
Key Features
| Feature | Design Value |
|---|---|
| Separate input/output supplies | Enables 5V analog sensing with 1.8V digital interfacing without level shifters |
| Adjustable hysteresis (0–40mV) | Reduces false triggering in noisy environments via external voltage on LE/HYST pin |
| Latching capability | Holds output state until next valid transition; eliminates metastability in asynchronous sampling |
| Complementary CMOS outputs | Supports differential signaling, XOR-based zero-crossing detection, or LVDS emulation |
| Ultra-low overdrive dispersion (1.8ns) | Ensures consistent timing across varying signal amplitudes - essential for TDR and ToF accuracy |
| –40°C to +85°C operation | Qualified for industrial temperature range without derating; junction temp rated to 150°C |
Applications
| High-Speed Line Receiver | Clock/Data Recovery |
|---|---|
|
Use Scenario: Receiving high-frequency serial data (e.g., 2.5Gbps NRZ) over lossy PCB traces with large common-mode noise. IC Role / Device Role / Timing Role: Differential comparator detecting zero-crossings with 2.9ns delay and 400ps skew between rising/falling edges. Use Value: Enables robust decision feedback equalization (DFE) by delivering deterministic timing with <1.8ns overdrive dispersion. |
Use Scenario: Extracting clean clock signals from jittered data streams in optical transceivers or SATA PHYs. IC Role / Device Role / Timing Role: High-gain, low-jitter comparator feeding a PLL's phase detector; 4.5ps RMS jitter preserves BER performance. Use Value: Maintains <10–12 bit error rate under 100MHz input with 100mVP-P amplitude due to ultra-low jitter floor. |
| Time-of-Flight Measurement | Window Comparator |
|
Use Scenario: Measuring ultrasonic or laser pulse round-trip time in industrial distance sensors or LiDAR modules. IC Role / Device Role / Timing Role: Precision edge detector capturing start/stop events with sub-nanosecond resolution and minimal propagation delay variation. Use Value: Achieves ±10ps timing repeatability across temperature (–40°C to +85°C) due to 18µV/°C offset drift and low dispersion. |
Use Scenario: Monitoring analog sensor outputs (e.g., pressure, temperature) against upper/lower thresholds in safety-critical systems. IC Role / Device Role / Timing Role: Dual-comparator configuration using internal hysteresis to reject EMI-induced glitches on sensor lines. Use Value: Adjustable hysteresis (via LE/HYST pin) allows real-time tuning of noise immunity without hardware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADCMP600BRMZ-REEL | Single-supply only (2.5–5.5V); no separate VDD/VCC; fixed 2.5ns delay; no hysteresis adjustment | Lacks rail-to-rail input beyond rails and programmable hysteresis; unsuitable for mixed-voltage interface | Select when cost-sensitive designs require basic high-speed comparison without advanced features |
| TLV3501CDR | Lower speed (4.5ns delay, 200MHz toggle); single 2.7–5.5V supply; no latch or hysteresis control | Insufficient for >250MHz timing-critical applications; no complementary outputs or shutdown | Choose for general-purpose high-speed comparison where jitter <10ps and latch function are not required |
Compared with ADCMP600BRMZ-REEL and TLV3501CDR, the LTC6752IUD-3#PBF uniquely combines 280MHz toggle rate, adjustable hysteresis, latch, complementary outputs, and dual-supply flexibility - making it the only option among the three qualified for precision time-of-flight and clock recovery in industrial-grade systems.
Availability
LTC6752IUD-3#PBF is available at Aetrix Electronics and suitable for high-speed line receivers, clock/data recovery circuits, and time-of-flight measurement systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC6752IUD-3#PBF 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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC6752 family was designed specifically for ultra-high-speed timing-critical applications including clock recovery, high-speed data acquisition, and precision time-domain reflectometry - emphasizing low jitter, deterministic propagation, and robust noise immunity.
FAQ
What is the operating temperature range for the LTC6752IUD-3#PBF?
The LTC6752IUD-3#PBF is specified for operation from –40°C to +85°C. This industrial-grade temperature range is validated across all key parameters including propagation delay, offset voltage, and jitter performance, ensuring reliability in demanding embedded and instrumentation applications.
Does the LTC6752IUD-3#PBF support rail-to-rail input operation beyond the supply rails?
Yes, the LTC6752IUD-3#PBF supports rail-to-rail input operation extending 0.2V below VEE and 0.1V above VCC. This capability enables accurate detection of signals near or slightly outside the supply domain - critical for sensor interfaces and fault-monitoring circuits.
How does the LE/HYST pin function on the LTC6752IUD-3#PBF?
The LE/HYST pin on the LTC6752IUD-3#PBF serves dual functions: when pulled low (<0.3V), it enables latching; when biased between 0.8V–1.45V, it adjusts input hysteresis from 5mV up to 40mV. The pin presents 15–25kΩ input resistance, allowing simple resistor-divider control without active circuitry.
What is the significance of the exposed pad (Pin 13) on the LTC6752IUD-3#PBF QFN package?
The exposed pad (Pin 13) on the LTC6752IUD-3#PBF is internally connected to VEE and must be soldered to a PCB ground plane. It provides critical thermal dissipation (θJA = 68°C/W) and low-inductance grounding for high-frequency stability - omission risks thermal overload and increased jitter.
Can the LTC6752IUD-3#PBF operate with different input and output supply voltages?
Yes, the LTC6752IUD-3#PBF supports independent supplies: VCC/VEE (2.45–5.25V) powers the input stage, while VDD/VEE (1.71–3.5V) powers the CMOS output stage. This allows direct interfacing to 1.8V logic while sensing 5V analog signals - eliminating external level shifters.
LTC6752IUD-3#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 12-WFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- CMOS
- Voltage - Supply, Single/Dual (±):
- 2.45V ~ 5.25V
- :
- 5.5mV @ 5V
- Voltage - Input Offset (Max):
- 1.6µA @ 5V
- Current - Input Bias (Max):
- 19mA @ 5V
- Current - Output (Typ):
- 2.65mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 5.3ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 12-QFN (3x3)
LTC6752IUD-3#PBF FAQ
1.How can I place an order for LTC6752IUD-3#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6752IUD-3#PBF 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 LTC6752IUD-3#PBF reliable?
The price and inventory of LTC6752IUD-3#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6752IUD-3#PBF is usually 5 days.
3.What payment methods are accepted for LTC6752IUD-3#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6752IUD-3#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6752IUD-3#PBF?
LTC6752IUD-3#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6752IUD-3#PBF 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 LTC6752IUD-3#PBF?
For technical support, including LTC6752IUD-3#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6752IUD-3#PBF requirements.
6.How does Aetrix verify that LTC6752IUD-3#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6752IUD-3#PBF 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 LTC6752IUD-3#PBF meets industry standards.
7.What is the process for return or replacement of LTC6752IUD-3#PBF?
All LTC6752IUD-3#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6752IUD-3#PBF, 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 LTC6752IUD-3#PBF part is unused and in its original packaging.
Return procedure for LTC6752IUD-3#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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