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Analog Devices Inc. AD8468WBKSZ-R7
- Part No.:
- AD8468WBKSZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
AD8468WBKSZ-R7.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:857
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Product details
Overview
AD8468WBKSZ-R7 from Analog Devices is a rail-to-rail, fast, low-power single-supply comparator operating from 2.5 V to 5.5 V, featuring 40 ns propagation delay, −0.2 V to VCC + 0.2 V input common-mode range, and integrated shutdown pin. It delivers TTL/CMOS-compatible output driving up to 15 pF, suited for high-speed threshold detection in automotive sensor interfaces.
For engineers reviewing the AD8468WBKSZ-R7 datasheet, AD8468WBKSZ-R7 pinout, AD8468WBKSZ-R7 application, or AD8468WBKSZ-R7 equivalent, key selection criteria include propagation delay dispersion (<12 ns), shutdown wake-up time (150 ns), input offset voltage (±3 mV typ), and SC70-6 automotive-grade qualification.
Technical Context
The AD8468WBKSZ-R7 uses Analog Devices' XFCB2.0 process to achieve robust input overdrive tolerance and no phase reversal beyond valid input range. Its dual-front-end input stage enables rail-to-rail operation with crossover bias points near 0.8 V and 1.6 V, ensuring stable switching across full supply range.
The TTL/CMOS-compatible output stage drives one Schottky TTL or three LSTTL loads directly, with propagation delay measured at 50% logic transition. Delay skew between rising/falling edges is ≤8 ns at 5.5 V, and overdrive dispersion remains <12 ns from 10 mV to 125 mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation delay | 30–50 ns at 2.5 V (10 mV overdrive); enables sub-20 MHz timing-critical decision circuits |
| Input common-mode range | −0.2 V to VCC + 0.2 V; supports direct sensing of signals below ground or above supply in single-supply systems |
| Supply current | 550–800 μA at 2.5 V; achieves 2 mW power dissipation for battery-sensitive applications |
| Shutdown current | 250–350 μA; reduces quiescent draw during idle without full power cycle |
| Input offset voltage | ±3 mV typical; ensures accurate 10 mV-level threshold detection without external trimming |
| Power supply rejection | >60 dB; maintains timing accuracy despite ripple on 2.5–5.5 V rails |
| Operating temperature | −40°C to +125°C; qualified for under-hood automotive environments |
Pinout & Package
AD8468WBKSZ-R7 is housed in a 6-lead SC70 package (JEDEC MO-203-AB, KS-6), measuring 2.00 mm × 1.25 mm × 0.90 mm, with exposed pad not electrically connected. The package supports reflow soldering and meets RoHS compliance (Z suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Q | Noninverting output | Active-high CMOS/TTL output; sinks/source 0.8 mA; high-impedance in shutdown mode |
| 2 - GND | Ground reference | Primary return path for supply and signal currents; must be low-inductance connection |
| 3 - VP | Noninverting analog input | Accepts −0.2 V to VCC + 0.2 V; internal clamp diodes limit input current to ±10 mA |
| 4 - VN | Inverting analog input | Same voltage range as VP; differential input impedance >200 kΩ (min) |
| 5 - SDN | Shutdown control | Logic-low (≤0.4 V) disables comparator; 300 ns sleep time, 150 ns wake-up time |
| 6 - VCC | Positive supply | 2.5–5.5 V operation; requires 0.1 μF ceramic bypass capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range | Supports direct interface to sensors or DACs operating at ground or supply rails without level-shifting circuitry |
| Low-glitch output stage | Minimizes false triggering in pulse-width modulators and zero-crossing detectors |
| 40 ns propagation delay | Enables reliable sampling of 20+ MHz clock/data signals with deterministic timing margins |
| Automotive qualification | Meets AEC-Q100 stress testing for temperature cycling, HTOL, and ESD (HBM ≥2 kV) |
| Graceful capacitive load degradation | Maintains monotonic timing behavior up to 15 pF; avoids oscillation or metastability with PCB trace capacitance |
Applications
| Automotive Sensor Interface | High-Speed Data Restoration |
|---|---|
Use Scenario: Detecting crankshaft position or wheel speed using variable reluctance sensors with wide common-mode swing. IC Role / Device Role / Timing Role: Comparator performing threshold detection on amplified AC sensor outputs with rail-to-rail input capability. Use Value: Enables direct interface to sensor front-ends without clamping diodes or level shifters, reducing BOM count and layout area. | Use Scenario: Restoring degraded clock or data signals in automotive infotainment serial links (e.g., LVDS-to-CMOS conversion). IC Role / Device Role / Timing Role: High-speed slicer reconstructing clean digital edges from noisy analog waveforms. Use Value: 40 ns propagation delay and <12 ns overdrive dispersion ensure jitter-free edge alignment for 25 Mbps+ data rates. |
| Pulse-Width Modulation Control | Peak Detection Trigger |
Use Scenario: Generating precise PWM signals in motor control feedback loops using triangle-wave vs. error-voltage comparison. IC Role / Device Role / Timing Role: Fast comparator generating switching edges with minimal propagation delay uncertainty. Use Value: Low 150 ns wake-up time allows dynamic enable/disable during PWM dead-time, improving efficiency. | Use Scenario: Capturing transient voltage peaks in battery management or power supply monitoring circuits. IC Role / Device Role / Timing Role: Threshold detector triggering ADC sampling or fault interrupts upon voltage exceedance. Use Value: ±3 mV offset voltage and −40°C to +125°C stability ensure repeatable trip points across environmental conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH7220MK/NOPB | 3.5 ns propagation delay, no shutdown pin, SOT-23-6 package, 2.7–12 V supply | Better speed but lacks automotive temp range and shutdown; requires external biasing for rail-to-rail inputs | Select when sub-5 ns timing is critical and shutdown is unnecessary |
| TLV3501DBVR | 4.5 ns propagation delay, no shutdown, SOT-23-6, 2.7–5.5 V, rail-to-rail input | Faster but unqualified for automotive; higher input bias current (1 pA vs. 0.4 μA) limits high-Z source use | Prefer for industrial test equipment where speed outweighs temperature range and shutdown need |
Compared with LMH7220MK/NOPB and TLV3501DBVR, the AD8468WBKSZ-R7 trades raw speed for automotive qualification, integrated shutdown, and guaranteed rail-to-rail operation down to 2.5 V-making it optimal for cost-sensitive, thermally demanding embedded sensing.
Availability
AD8468WBKSZ-R7 is available at Aetrix Electronics and suitable for automotive sensor interfaces, high-speed data restoration, and pulse-width modulation control requiring stable component supply across extended temperature ranges.
Supply support for AD8468WBKSZ-R7 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, headquartered in Norwood, MA.
The AD8468 belongs to Analog Devices' precision high-speed comparator product line, designed specifically for automotive and industrial applications demanding rail-to-rail operation, low power, and robust timing performance across −40°C to +125°C.
FAQ
What is the maximum input overdrive the AD8468WBKSZ-R7 can tolerate without damage?
The AD8468WBKSZ-R7 tolerates input voltages from −0.5 V to VCC + 0.5 V per Absolute Maximum Ratings. Input pins include clamp diodes to VCC and GND; sustained current into these diodes must remain ≤10 mA. Exceeding −0.5 V or VCC + 0.5 V risks permanent damage. For reliable operation, keep input signals within −0.2 V to VCC + 0.2 V as specified in DC input characteristics. The AD8468WBKSZ-R7 maintains no phase reversal even when inputs exceed this valid range.
Does the AD8468WBKSZ-R7 require external hysteresis for noise immunity?
No, the AD8468WBKSZ-R7 does not require external hysteresis for basic noise immunity due to its low-glitch output architecture and internal design that suppresses chattering. However, hysteresis may still be added externally for applications with highly noisy inputs or marginal overdrive. The device's propagation delay dispersion remains <12 ns across 10–125 mV overdrive, indicating inherent stability. The AD8468WBKSZ-R7's input stage avoids oscillation even with poor PCB layout, unlike many comparators.
Can the AD8468WBKSZ-R7 drive a 50 Ω transmission line directly?
No, the AD8468WBKSZ-R7 is not designed to drive 50 Ω transmission lines directly. Its output stage is rated for ≤15 pF capacitive load and logic-level fanout (one Schottky TTL or three LSTTL loads). Driving 50 Ω requires a dedicated line driver or buffer amplifier. Attempting direct 50 Ω drive causes excessive current draw, output voltage droop, and timing degradation. For LVDS-to-CMOS conversion (as shown in Figure 13), a 100 Ω termination is used-not 50 Ω-and the AD8468WBKSZ-R7 drives the CMOS side only.
What is the purpose of the crossover bias points at ~0.8 V and ~1.6 V in the AD8468WBKSZ-R7?
The crossover bias points reflect the dual-front-end input architecture of the AD8468WBKSZ-R7, where different transistor pairs activate near different common-mode voltages to maintain rail-to-rail operation. At ~0.8 V and ~1.6 V (for 2.5 V supply), the input bias current direction reverses and offset voltage shifts slightly. This design ensures consistent gain and response across the full input range. These points are intrinsic to the XFCB2.0 process and do not indicate malfunction-the AD8468WBKSZ-R7 remains fully functional across −0.2 V to VCC + 0.2 V.
Is the AD8468WBKSZ-R7 pin-compatible with other SC70-6 comparators like the TLV3501?
No, the AD8468WBKSZ-R7 is not pin-compatible with the TLV3501DBVR or other SC70-6 comparators. Although both use 6-lead SC70 packages, the pin assignments differ: AD8468WBKSZ-R7 assigns Pin 1 to Q (output), Pin 3 to VP, Pin 4 to VN, and Pin 5 to SDN, whereas TLV3501DBVR places output on Pin 6, noninverting input on Pin 3, inverting input on Pin 2, and no shutdown pin. Swapping them without board revision will cause functional failure. Always verify pin configuration using the respective datasheets before substitution.
AD8468WBKSZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- CMOS, TTL
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 5.5V
- :
- 10mV @ 2.5V
- Voltage - Input Offset (Max):
- 0.4µA @ 2.5V
- Current - Input Bias (Max):
- 50mA
- Current - Output (Typ):
- 1.3mA
- Current - Quiescent (Max):
- 45dB CMRR, 50dB PSRR
- CMRR, PSRR (Typ):
- 60ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SC-70-6
AD8468WBKSZ-R7 FAQ
1.How can I place an order for AD8468WBKSZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8468WBKSZ-R7 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 AD8468WBKSZ-R7 reliable?
The price and inventory of AD8468WBKSZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8468WBKSZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8468WBKSZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8468WBKSZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8468WBKSZ-R7?
AD8468WBKSZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8468WBKSZ-R7 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 AD8468WBKSZ-R7?
For technical support, including AD8468WBKSZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8468WBKSZ-R7 requirements.
6.How does Aetrix verify that AD8468WBKSZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8468WBKSZ-R7 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 AD8468WBKSZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8468WBKSZ-R7?
All AD8468WBKSZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8468WBKSZ-R7, 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 AD8468WBKSZ-R7 part is unused and in its original packaging.
Return procedure for AD8468WBKSZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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