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Analog Devices Inc. AD8561ARZ-REEL
- Part No.:
- AD8561ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8561ARZ-REEL.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,350
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Product details
Overview
AD8561ARZ-REEL from Analog Devices is a single ultrafast 7 ns rail-to-rail input comparator with latch enable, designed for high-speed timing and clock recovery circuits operating from 3 V to 10 V single supply. It features 6.75 ns typical propagation delay, matched rising/falling edge delays (ΔtP ≤ 2.0 ns), and input common-mode range extending to ground (0 V to +3.0 V). It is used in PCMCIA card line receivers and phase detectors where duty-cycle preservation is critical.
For engineers reviewing the AD8561ARZ-REEL datasheet, AD8561ARZ-REEL pinout, AD8561ARZ-REEL application, or AD8561ARZ-REEL equivalent, key selection considerations include latch setup/hold timing (tS = 1.0 ns, tH = 1.2 ns), output drive capability (3.2 mA sink/source), low 5.5 mA total supply current at +25°C, and TSSOP/SOIC package compatibility with LT1016 footprint.
Technical Context
The AD8561ARZ-REEL employs a PNP differential input stage enabling rail-to-rail input operation down to the negative supply (0 V on single supply) and up to +3.0 V. Its internal latch circuit responds to TTL/CMOS-compatible logic thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) with 6 ns minimum enable pulse width.
Propagation delay is tightly specified across temperature (8–13 ns over –40°C to +85°C) and load capacitance (≤10 ns at 50 pF), with rise/fall times of 3.8 ns and 1.5 ns respectively. Input offset voltage is 7 mV max over temperature, and CMRR reaches 85 dB within its 0 V to +3.0 V common-mode range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 6.75 ns typical (200 mV step, 100 mV overdrive); enables sub-10 ns timing-critical decisions in clock distribution paths |
| Input Common-Mode Range | 0 V to +3.0 V on single +5 V supply; supports direct interfacing to 3.3 V logic and ground-referenced signals |
| Latch Enable Thresholds | VIL ≤ 0.8 V, VIH ≥ 2.0 V; ensures reliable TTL/CMOS-level control without level-shifting |
| Supply Current | 5.5 mA max at +85°C; reduces thermal load in dense high-speed PCB layouts |
| Output Drive | 3.2 mA sink/source at VOL = 0.25 V / VOH = 2.4 V; directly drives 20 TTL loads or 100 Ω termination |
| Differential Propagation Delay | ≤2.0 ns (rising vs. falling); preserves input duty cycle in clock recovery applications |
| Input Offset Voltage | 8 mV max over –40°C to +85°C; limits decision threshold error in precision threshold detection |
Pinout & Package
AD8561ARZ-REEL is supplied in an 8-lead narrow-body SOIC (R-8) package, RoHS-compliant, tape-and-reel format (REEL suffix). Dimensions: 4.90 mm × 3.90 mm × 1.75 mm, 1.27 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: V+ | Positive Supply | Accepts 3 V to 10 V single supply; powers both input and output stages |
| 2: IN− | Inverting Input | Differential input node; PNP-based stage allows common-mode down to 0 V |
| 3: IN+ | Noninverting Input | Differential input node; matched bias and capacitance to IN− (CIN = 3.0 pF) |
| 4: GND | Ground Reference | Return path for V+ supply and output stage; requires low-inductance connection |
| 5: LATCH | Asynchronous Latch Enable | Active-high TTL/CMOS input; latches output state when asserted ≥6 ns |
| 6: OUT | True Output | Open-collector compatible; sinks 3.2 mA to 0.25 V or sources 3.2 mA to 2.4 V |
| 7: - | No Connect | Internally unused; must be left floating or tied to GND per layout guidelines |
| 8: V− | Negative Supply / Ground | On single supply: connected to GND; on dual supply: accepts –5 V |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | 0 V to +3.0 V on +5 V supply-enables direct interface with 3.3 V logic and ground-referenced sensors |
| Matched propagation delay (ΔtP) | ≤2.0 ns over temperature-ensures minimal duty-cycle distortion in clock regeneration |
| Integrated latch with TTL-compatible control | VIH ≥ 2.0 V, VIL ≤ 0.8 V, tPW(E) ≥ 6 ns-eliminates need for external flip-flop in sampling systems |
| Low input bias current | –3 μA typical (out of inputs)-reduces voltage error with high-impedance sources (e.g., RC filters) |
| High-speed output drive | 3.2 mA sink/source into 100 Ω-supports direct 50 Ω transmission line termination without buffer |
Applications
| High-Speed Clock Recovery | PCMCIA Card Line Receiver |
|---|---|
Use Scenario: Recovering clean clock edges from jittered or attenuated data streams in portable computing interfaces. IC Role / Device Role / Timing Role: Comparator with latch function acting as edge detector and hold register for clock synchronization. Use Value: 6.75 ns propagation delay and matched rise/fall delays preserve input duty cycle, minimizing recovered clock jitter. |
Use Scenario: Converting differential or single-ended bus signals to clean digital levels in PCMCIA Type II card slots. IC Role / Device Role / Timing Role: High-speed line receiver with latch enabling synchronous sampling of card status lines. Use Value: TTL-compatible latch input and 3.2 mA drive strength allow direct interface to ISA-style host controllers without glue logic. |
| Digital Communication Pulse Detection | Phase Detector in PLL Systems |
Use Scenario: Detecting leading/trailing edges of NRZ or Manchester-encoded serial data in industrial fieldbus nodes. IC Role / Device Role / Timing Role: Ultrafast comparator generating precise timing pulses for data recovery clock generation. Use Value: 1.5 ns fall time and 3.8 ns rise time support >100 Mbps signal detection with minimal pulse distortion. |
Use Scenario: Comparing reference and feedback clock phases in analog PLLs for frequency synthesizers. IC Role / Device Role / Timing Role: Phase comparator generating UP/DOWN pulses proportional to phase difference. Use Value: Low 7 mV input offset and 85 dB CMRR ensure accurate phase error measurement across supply and temperature variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1016CS8#PBF | 10 ns typical propagation delay; +25 μA supply current; narrower input common-mode range (1.25 V to 3.5 V on +5 V) | Less suitable for 0 V–referenced inputs or low-power battery-operated designs | Select when legacy footprint compatibility is required and speed <10 ns is acceptable |
| TLV3501CDR | 4.5 ns propagation delay; rail-to-rail output; no integrated latch; 2.7 V to 16 V supply range | Requires external latch for data retention; better for ultra-low-voltage (2.7 V) or wide-supply systems | Select when maximum speed is critical and latch functionality can be implemented externally |
Compared with LT1016CS8#PBF and TLV3501CDR, the AD8561ARZ-REEL uniquely combines sub-7 ns speed, built-in TTL-compatible latch, and 0 V–referenced input operation in a standard SOIC-8 package-making it optimal for space-constrained clock recovery and sampling applications requiring deterministic output hold.
Availability
AD8561ARZ-REEL is available at Aetrix Electronics and suitable for high-speed timing, clock distribution, and line receiver applications requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for AD8561ARZ-REEL 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD8561 belongs to Analog Devices' high-speed comparator product line, engineered specifically for timing-critical applications including clock recovery, phase detection, and digital communications where propagation delay matching and latch functionality are essential.
FAQ
What is the maximum operating supply voltage for the AD8561ARZ-REEL?
The AD8561ARZ-REEL has an absolute maximum total supply voltage (V+ to V−) of 14 V. For reliable operation, the recommended single-supply range is 3 V to 10 V. Exceeding 10 V risks exceeding internal junction limits and may degrade long-term reliability, even if within absolute maximum ratings.
Does the AD8561ARZ-REEL support dual-supply operation?
Yes, the AD8561ARZ-REEL supports dual-supply operation with V+ up to +5.5 V and V− down to –5.5 V (total supply ≤14 V). In dual-supply mode, the input common-mode range extends from –5.0 V to +3.0 V, enabling use with ±5 V rails while maintaining fast response.
Can the AD8561ARZ-REEL drive a 50 Ω transmission line directly?
The AD8561ARZ-REEL can drive a 50 Ω load but requires a pull-up resistor to V+ for proper high-side termination. With a 5 kΩ pull-up to V+, the output delivers full swing (0.25 V to V+ − 1.1 V) and maintains <10 ns propagation delay-verified in Analog Devices' application notes for line receiver configurations.
Is the AD8561ARZ-REEL pin-compatible with the LT1016?
Yes, the AD8561ARZ-REEL is pin-compatible with the LT1016 in SOIC-8 (R-8) and TSSOP-8 (RU-8) packages. However, differences exist: AD8561ARZ-REEL offers wider input common-mode range (0 V to +3.0 V vs. +1.25 V to +3.5 V), lower supply current (5.5 mA vs. 25 mA), and faster propagation delay (6.75 ns vs. 10 ns).
What is the latch enable timing requirement for the AD8561ARZ-REEL?
The AD8561ARZ-REEL requires a minimum latch enable pulse width (tPW(E)) of 6 ns, with setup time (tS) of 1.0 ns and hold time (tH) of 1.2 ns. These values are guaranteed over –40°C to +85°C and ensure reliable data capture without metastability in synchronous sampling circuits using the AD8561ARZ-REEL.
AD8561ARZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- CMOS, Complementary, TTL
- Voltage - Supply, Single/Dual (±):
- 3V ~ 10V, ±1.5V ~ 5V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 6µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 6mA, 3.3mA, 5.5mA
- Current - Quiescent (Max):
- 85dB CMRR, 65dB PSRR
- CMRR, PSRR (Typ):
- 9.8ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
AD8561ARZ-REEL FAQ
1.How can I place an order for AD8561ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8561ARZ-REEL 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 AD8561ARZ-REEL reliable?
The price and inventory of AD8561ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8561ARZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8561ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8561ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8561ARZ-REEL?
AD8561ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8561ARZ-REEL 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 AD8561ARZ-REEL?
For technical support, including AD8561ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8561ARZ-REEL requirements.
6.How does Aetrix verify that AD8561ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8561ARZ-REEL 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 AD8561ARZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8561ARZ-REEL?
All AD8561ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8561ARZ-REEL, 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 AD8561ARZ-REEL part is unused and in its original packaging.
Return procedure for AD8561ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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