My Inquiry
My Account
Analog Devices Inc. AD8612ARUZ-REEL
- Part No.:
- AD8612ARUZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD8612ARUZ-REEL.pdf
- Description:
- IC COMPARATOR 2 W/LATCH 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,741
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD8612ARUZ-REEL from Analog Devices is a dual ultrafast comparator with latch function and complementary outputs, delivering 4 ns propagation delay at 5 V, single-supply operation from 3 V to 5 V, and 100 MHz input frequency capability. It operates across −40°C to +85°C and is used in high-speed clock recovery, line receivers, and ADC timing circuits.
For engineers reviewing the AD8612ARUZ-REEL datasheet, AD8612ARUZ-REEL pinout, AD8612ARUZ-REEL application, or AD8612ARUZ-REEL equivalent, key selection factors include latch enable timing (0.5 ns setup/hold), matched rising/falling propagation delay (ΔtP ≤ 2.0 ns), input common-mode range (0 V to 3.0 V at 5 V supply), and TSSOP-14 package compatibility with high-density PCB layouts.
Technical Context
The AD8612ARUZ-REEL integrates two independent high-speed comparators sharing a common ground and dual latch enables (LEA/LEB), each supporting TTL/CMOS-compatible logic thresholds (VIH = 2.0 V, VIL = 0.8 V) only when VCC > 4.3 V. Its bipolar PNP input stage enables rail-to-rail common-mode input down to −200 mV and up to 3.0 V on a 5 V supply.
Propagation delay matching (≤2.0 ns differential) and temperature-stable delay performance (±0.5 ns over −40°C to +85°C) support precise duty-cycle preservation in clock distribution. The latch function holds output state independently per channel without affecting the other comparator's response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | 4.0 ns typical at 5 V, 100 mV step with 100 mV overdrive - enables sub-250 MHz timing resolution. |
| Differential Propagation Delay | ≤2.0 ns max - ensures <1% duty cycle distortion in recovered clock signals. |
| Input Common-Mode Range | 0 V to 3.0 V at 5 V supply - supports direct interfacing with 3.3 V logic and low-voltage analog sources. |
| Latch Enable Threshold | VIH = 2.0 V min, VIL = 0.8 V max - compatible with standard 3.3 V and 5 V logic families. |
| Supply Current | 10 mA max per comparator at 5 V - enables dual-channel operation within 20 mA total budget. |
| Input Capacitance | 3.0 pF - minimizes loading on high-frequency source impedances ≤1 kΩ for optimal speed. |
| Output Drive | VOL = 0.4 V max at 3.2 mA sink - ensures clean TTL-level low-state under moderate load. |
Pinout & Package
AD8612ARUZ-REEL is housed in a 14-lead TSSOP (RU-14) package with exposed pad for thermal enhancement and standard JEDEC MO-153 footprint. Pin pitch is 0.65 mm; body dimensions are 5.0 mm × 4.4 mm × 1.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for both analog and digital sections; must connect to continuous ground plane. |
| 2 | LEA | Latch enable for Channel A; inactive below 4.3 V supply; 0.5 ns setup/hold required. |
| 3 | V− | Negative supply terminal; tied to GND in single-supply configurations. |
| 4 | INA− | Inverting input for Channel A; bipolar PNP stage accepts inputs down to −200 mV. |
| 5 | INA+ | Noninverting input for Channel A; input bias current flows out (−4.5 μA max). |
| 6 | GND | Second ground connection; improves noise immunity and thermal dissipation. |
| 7 | LEB | Latch enable for Channel B; electrically isolated from LEA; same voltage thresholds as LEA. |
| 8 | V+ | Positive supply terminal; supports 3 V to 5 V operation; PSRR = 73 dB typical. |
| 9 | INB− | Inverting input for Channel B; identical specs to INA−; no crosstalk with Channel A. |
| 10 | INB+ | Noninverting input for Channel B; independent bias current path from Channel A. |
| 11 | QA | Complementary output A (true); drives low to 0.4 V at 3.2 mA; rise/fall times ≤2.5 ns / 1.1 ns. |
| 12 | QA | Complementary output A (inverted); matches QA timing and drive strength. |
| 13 | QB | Complementary output B (true); fully independent timing and loading behavior from QA. |
| 14 | QB | Complementary output B (inverted); supports simultaneous dual-window detection. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast 4 ns propagation delay | Enables timing-critical applications such as 250 Mbps serial link sampling and jitter-sensitive clock recovery. |
| Dual independent latch enables (LEA/LEB) | Allows asynchronous latching of each comparator's output without inter-channel interference. |
| Matched rising/falling delay (ΔtP ≤ 2.0 ns) | Maintains input duty cycle integrity in clock regeneration paths, reducing downstream timing skew. |
| Bipolar PNP input stage | Provides −200 mV to +3.0 V input common-mode range on 5 V supply, eliminating level-shifting for many sensors and DACs. |
| 3.0 pF input capacitance | Permits direct connection to 50 Ω transmission lines or high-frequency sources with minimal signal degradation. |
Applications
| High-Speed Clock Recovery | Line Receiver for Digital Communications |
|---|---|
Use Scenario: Recovering clean square-wave clocks from distorted 65 MHz, 100 mVp-p signals on PCB traces with impedance mismatch. IC Role / Device Role / Timing Role: Comparator acting as threshold detector with latch disabled; QA/QB outputs reconstruct full-swing timing edges. Use Value: 4 ns propagation delay and matched edge timing preserve input duty cycle, enabling reliable CDR in FPGA-based serial interfaces. | Use Scenario: Converting attenuated, noisy LVDS or PECL signals into robust CMOS logic levels for ASIC input staging. IC Role / Device Role / Timing Role: High-bandwidth line receiver with adjustable hysteresis via external feedback resistors. Use Value: 100 MHz input bandwidth and 3 pF input capacitance minimize intersymbol interference in 100 Mbps parallel bus receivers. |
| High-Speed Window Comparator | ADC Sampling Trigger Generator |
Use Scenario: Detecting when an analog input lies between 1.2 V and 1.8 V in real-time motor control feedback loops. IC Role / Device Role / Timing Role: Dual-channel comparator implementing window detection using internal QA/QB and external transistors (e.g., 2N3960). Use Value: Sub-10 ns total propagation (VIN to VOUT) ensures timely fault detection before overcurrent events damage power stages. | Use Scenario: Generating precise, jitter-minimized sample pulses for 10-bit, 50 MSPS ADCs in medical ultrasound front-ends. IC Role / Device Role / Timing Role: Edge-triggered comparator driving ADC CONVST input with latch-enabled hold during conversion latency. Use Value: Latch function freezes trigger state during ADC acquisition, preventing metastability from input noise during sampling window. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1394CS8#TRPBF | 7 ns typical propagation delay; no latch function; SO-8 package; higher supply current (12 mA). | Suitable for non-latched, lower-speed timing but lacks channel independence and latch hold capability. | Select when latch functionality is unnecessary and board space permits SO-8; verify input common-mode range (1.25 V above V−) fits system rails. |
| TLV3501CDR | 4.5 ns propagation delay; no latch; 6-pin SOT-23; rail-to-rail output; 2.7–5.5 V supply. | Single-channel only; no complementary outputs or latch; smaller footprint but no dual-channel integration. | Choose for space-constrained single-comparator use cases where latch and dual outputs are not required. |
Compared with LT1394CS8#TRPBF and TLV3501CDR, AD8612ARUZ-REEL uniquely delivers dual-channel 4 ns timing with per-channel latch enables and complementary outputs in a single TSSOP-14 package-enabling compact, deterministic window detection and clock recovery without external logic or layout duplication.
Availability
AD8612ARUZ-REEL is available at Aetrix Electronics and suitable for high-speed clock recovery, precision window detection, and ADC sampling trigger generation requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for AD8612ARUZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD8611/AD8612 product line was designed specifically for ultrafast timing-critical systems demanding sub-5 ns propagation, latch-controlled output hold, and dual-channel integration in compact surface-mount packages.
FAQ
What is the minimum supply voltage required for the latch function of AD8612ARUZ-REEL to operate?
The latch function of AD8612ARUZ-REEL is not functional below 4.3 V supply voltage. At V+ < 4.3 V, the LEA and LEB inputs become unresponsive and must be held low to avoid undefined behavior. This threshold is specified in the Absolute Maximum Ratings and Applications Information sections of the AD8612ARUZ-REEL datasheet, and applies across the full −40°C to +85°C operating temperature range.
Does AD8612ARUZ-REEL support true rail-to-rail input common-mode range on a 5 V supply?
AD8612ARUZ-REEL supports an input common-mode voltage range of 0 V to 3.0 V on a 5 V supply - not full rail-to-rail. Its bipolar PNP input stage extends down to −200 mV below GND but only up to 3.0 V (2.0 V below V+). Exceeding 3.0 V increases input bias current and degrades propagation delay, as confirmed in Table 1 and the Input Stage section of the AD8612ARUZ-REEL datasheet.
Can AD8612ARUZ-REEL drive 50 Ω transmission lines directly?
AD8612ARUZ-REEL is not designed to drive 50 Ω loads continuously: its VOL = 0.4 V at 3.2 mA sink implies ~125 Ω effective output resistance. Driving 50 Ω directly would pull VOL above specification and increase propagation delay. For 50 Ω line driving, use external 50 Ω series termination at the source or add a dedicated line driver IC after AD8612ARUZ-REEL.
What is the maximum input frequency AD8612ARUZ-REEL can accurately compare at +85°C?
At +85°C, AD8612ARUZ-REEL maintains accurate comparison up to 100 MHz only with ≥50 mV input overdrive, as stated in the Applications Information section. Below 50 mV overdrive, timing uncertainty increases significantly. Operation above 100 MHz risks excessive supply current (>20 mA) and indeterminate output states, making 100 MHz the practical upper limit for reliable operation across temperature.
How does the AD8612ARUZ-REEL latch differ from a D-type flip-flop?
The AD8612ARUZ-REEL latch is an asynchronous, level-sensitive hold circuit-not a clocked edge-triggered flip-flop. When LEA or LEB is high, the corresponding QA or QB output freezes at its last valid state regardless of input changes. There is no clock input, no setup/hold relative to a clock edge, and no internal storage element beyond the comparator's output stage. This behavior is explicitly defined in the Pin Function Descriptions and Latch Timing sections of the AD8612ARUZ-REEL datasheet.
AD8612ARUZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- with Latch
- Number of Elements:
- 2
- Output Type:
- Complementary, TTL
- Voltage - Supply, Single/Dual (±):
- 3V ~ 5V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 6µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 10mA, 4mA
- Current - Quiescent (Max):
- 85dB CMRR, 73dB PSRR
- CMRR, PSRR (Typ):
- 5.5ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-TSSOP
AD8612ARUZ-REEL FAQ
1.How can I place an order for AD8612ARUZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8612ARUZ-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 AD8612ARUZ-REEL reliable?
The price and inventory of AD8612ARUZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8612ARUZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8612ARUZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8612ARUZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8612ARUZ-REEL?
AD8612ARUZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8612ARUZ-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 AD8612ARUZ-REEL?
For technical support, including AD8612ARUZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8612ARUZ-REEL requirements.
6.How does Aetrix verify that AD8612ARUZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8612ARUZ-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 AD8612ARUZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8612ARUZ-REEL?
All AD8612ARUZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8612ARUZ-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 AD8612ARUZ-REEL part is unused and in its original packaging.
Return procedure for AD8612ARUZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD8612ARUZ-REEL Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
