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Analog Devices Inc. ADG508AKNZ
- Part No.:
- ADG508AKNZ
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
ADG508AKNZ.pdf
- Description:
- IC MUX 8:1 300OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:670
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Product details
Overview
ADG508AKNZ from Analog Devices is a CMOS 8-channel analog multiplexer designed for precision signal routing in data acquisition, instrumentation, and industrial control systems. It features VSS-to-VDD analog signal range (±15 V dual supply or 0–15 V single supply), 280 Ω typical on-resistance, 20 pA typical off-leakage, break-before-make switching, and TTL/5 V CMOS-compatible digital inputs.
For engineers reviewing the ADG508AKNZ datasheet, ADG508AKNZ pinout, ADG508AKNZ application, or ADG508AKNZ equivalent, this device is selected for high-precision, low-leakage, wide-supply analog switching where channel count, signal integrity, and temperature stability across −40°C to +85°C are critical design constraints.
Technical Context
The ADG508AKNZ implements an 8:1 single-ended analog switch architecture using enhanced LC2MOS process technology, enabling rail-to-rail analog signal handling (VSS to VDD) and operation over 10.8 V to 16.5 V single- or dual-supply ranges. Its decoder accepts three binary address lines (A0–A2) and an active-high enable (EN) to select one of eight source terminals (S1–S8) to the common drain (D).
It guarantees break-before-make switching to prevent momentary shorting between channels, supports ≤400 ns max transition time at 15 V, and maintains ≤5% RON match across channels - critical for gain-matched multi-channel systems and precision DAC demultiplexing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | VSS to VDD: supports ±15 V dual supply or 0–15 V single supply - enables full-rail signal routing without clipping. |
| RON (Typical) | 280 Ω at ±15 V dual supply - ensures minimal gain error and voltage drop in sensor/DAQ front-ends. |
| Off-Leakage (IS) | 0.02 nA typical at +25°C - preserves accuracy in high-impedance circuits (e.g., electrometer-grade measurement). |
| tTRANSITION (Max) | 400 ns at VDD = ±15 V - supports sampling rates up to ~2.5 MSPS in time-critical multiplexed ADC systems. |
| Supply Range | 10.8 V to 16.5 V (single or dual) - accommodates standard ±12 V and ±15 V industrial power rails with margin. |
| Operating Temp | −40°C to +85°C (K grade) - qualified for commercial and industrial environments without derating. |
| Charge Injection | 4 pC typical - minimizes settling error and glitch energy when switching high-impedance capacitive loads (e.g., sample-hold inputs). |
Pinout & Package
ADG508AKNZ is supplied in a 16-lead plastic dual in-line package (PDIP, N-16), with 0.300-inch body width and 0.100-inch lead pitch. Pin 1 is identified by a notch or dot; pins are numbered counter-clockwise from top-left when viewed from top.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | A0 | LSB address input - selects channel index bit 0; compatible with TTL/5 V CMOS logic levels. |
| 2 | EN | Active-high enable - disables all switches when low; required for power-down or channel isolation. |
| 3 | VSS | Negative supply rail - connects to −15 V (dual) or GND (single); defines lower analog signal limit. |
| 4 | S1 | Source terminal 1 - bidirectional analog I/O; routed to D when A2A1A0 = 000 and EN = high. |
| 5 | S2 | Source terminal 2 - identical electrical behavior to S1; used for channel 1 (001) selection. |
| 6 | S3 | Source terminal 3 - supports channel 2 (010); shares same RON, leakage, and capacitance specs as S1–S8. |
| 7 | S4 | Source terminal 4 - channel 3 (011); no internal series resistance or protection diodes beyond spec limits. |
| 8 | D | Common drain/output - single-ended analog node shared by all 8 channels; low-capacitance (22 pF off). |
| 9 | S8 | Source terminal 8 - highest-index channel (111); electrically identical to S1–S7 per datasheet Table 4. |
| 10 | S7 | Source terminal 7 - channel 6 (110); validated for ≤20 mA continuous current per pin. |
| 11 | S6 | Source terminal 6 - channel 5 (101); supports break-before-make timing (tOPEN ≥ 10 ns min). |
| 12 | S5 | Source terminal 5 - channel 4 (100); matches RON within 5% across all channels at same bias. |
| 13 | VDD | Positive supply rail - connects to +15 V (dual) or +15 V (single); powers internal decoder and switch array. |
| 14 | GND | Digital ground reference - separate from VSS in dual-supply configs; ties to system 0 V in single-supply use. |
| 15 | A2 | MSB address input - controls bit 2 of 3-bit channel select; synchronous with A0/A1 for glitch-free decoding. |
| 16 | A1 | Address input - bit 1 of channel select; all address pins exhibit ≤8 pF input capacitance and <1 μA leakage. |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed tOPEN ≥ 10 ns minimum - prevents transient shorts during channel transitions, protecting sensitive downstream circuitry. |
| VSS-to-VDD analog range | Supports full-rail signal swing (e.g., ±10 V) with no degradation in RON or leakage - eliminates level-shifting in bipolar systems. |
| Low charge injection (4 pC) | Minimizes voltage step at D terminal during switching - critical for precision sample-and-hold and DAC output demux. |
| Enhanced LC2MOS process | Enables 44 V absolute max VDD-to-VSS rating and robust ESD tolerance - improves reliability in noisy industrial environments. |
| Single/dual-supply compatibility | Specified identically across 10.8–16.5 V single (VSS = GND) and dual (VSS = −VDD) modes - simplifies BOM consolidation. |
Applications
| Data Acquisition Systems | Industrial Process Control |
|---|---|
Use Scenario: Multiplexing 8 thermocouple or RTD sensor outputs into a single high-resolution ADC. IC Role / Device Role / Timing Role: Precision analog switch routing signals with minimal offset/gain error and thermal EMF. Use Value: 20 pA leakage and 5% RON match preserve microvolt-level resolution across all channels. |
Use Scenario: Routing analog setpoint and feedback signals in PLC-based closed-loop motor control cabinets. IC Role / Device Role / Timing Role: High-voltage-tolerant (±15 V) channel selector for 4–20 mA loop conditioning circuits. Use Value: VSS-to-VDD range and 44 V abs max rating withstand transients on industrial backplanes. |
| Medical Instrumentation | Test & Measurement Equipment |
Use Scenario: Selecting among 8 patient electrode inputs in portable ECG/EEG front-end modules. IC Role / Device Role / Timing Role: Low-noise, low-leakage analog multiplexer ensuring biopotential signal fidelity. Use Value: 4 pC charge injection prevents baseline shift during rapid channel scanning (<100 μs intervals). |
Use Scenario: Configuring programmable attenuator/calibration paths in automated multimeters and signal analyzers. IC Role / Device Role / Timing Role: Precision-switched reference path with guaranteed break-before-make timing. Use Value: 400 ns max tTRANSITION enables sub-microsecond reconfiguration during auto-ranging sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG508AKRZ | Same die, SOIC_N (R-16) package - 5.8 mm × 4.0 mm surface-mount footprint vs. PDIP's 19.1 mm × 6.4 mm through-hole. | Preferred for space-constrained PCBs and automated assembly; identical electrical specs and temp range. | Select ADG508AKRZ for new designs targeting SMT production; ADG508AKNZ remains optimal for prototyping, repair, or legacy through-hole layouts. |
| DG508AN | Legacy industry-standard pinout but higher RON (400 Ω typ), higher leakage (100 pA max), and narrower supply (±15 V only). | Limited to less demanding applications; lacks break-before-make guarantee and RoHS compliance (ADG508AKNZ is Z-suffix RoHS). | ADG508AKNZ offers measurable improvements in precision, reliability, and regulatory compliance - upgrade recommended unless DG508AN is mandated for legacy replacement. |
Compared with DG508AN and ADG508AKRZ, the ADG508AKNZ delivers superior leakage performance (0.02 nA vs. 0.1 nA), guaranteed break-before-make timing, and RoHS compliance - making it the preferred choice for new high-accuracy, industrial-grade designs requiring through-hole mounting.
Availability
ADG508AKNZ is available at Aetrix Electronics and suitable for data acquisition systems, industrial process controllers, medical instrumentation, and test equipment requiring stable component supply across extended temperature and voltage ranges.
Supply support for ADG508AKNZ 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 Wilmington, MA.
The ADG508A family was developed to deliver precision, low-leakage, wide-supply analog switching for industrial and instrumentation applications - emphasizing rail-to-rail signal handling, temperature stability, and robustness in harsh environments.
FAQ
What is the maximum supply voltage rating for ADG508AKNZ?
The ADG508AKNZ has an absolute maximum VDD-to-VSS rating of 44 V. Its recommended operating supply range is 10.8 V to 16.5 V for both single- and dual-supply configurations. Exceeding 44 V risks permanent damage, and operation outside the 10.8–16.5 V range may degrade RON, leakage, or timing specs. The ADG508AKNZ datasheet specifies performance only within this defined operating window.
Does ADG508AKNZ support single-supply operation?
Yes, ADG508AKNZ supports true single-supply operation with VSS tied to GND and VDD at 10.8 V to 16.5 V. In this mode, the analog signal range is 0 V to VDD (e.g., 0–15 V), and all specifications - including RON (500 Ω typ), leakage (0.02 nA typ), and tTRANSITION (300 ns typ) - are fully characterized and guaranteed per the datasheet's Single Supply table.
What does the 'KNZ' suffix indicate in ADG508AKNZ?
The 'KNZ' suffix denotes the commercial-grade (K) temperature range (−40°C to +85°C), plastic DIP (N) package, and RoHS-compliant (Z) construction. This distinguishes it from variants like ADG508AKRZ (SOIC) or ADG508ABQ (ceramic DIP). The ADG508AKNZ is lead-free, halogen-free, and meets JEDEC J-STD-020 moisture sensitivity level 1 requirements.
Is ADG508AKNZ pin-compatible with DG508A?
No, ADG508AKNZ is not pin-compatible with DG508A. While both are 8-channel analog multiplexers in 16-lead PDIP packages, their pinouts differ: DG508A places EN on Pin 1 and A0 on Pin 2, whereas ADG508AKNZ places A0 on Pin 1 and EN on Pin 2. Direct substitution requires PCB layout revision. Always verify pin mapping using Figure 3 (ADG508AKNZ) and the corresponding DG508A datasheet.
How does break-before-make timing work in ADG508AKNZ?
ADG508AKNZ guarantees break-before-make switching with tOPEN ≥ 10 ns minimum (measured from old channel turn-off to new channel turn-on). This prevents momentary shorting between source terminals during address changes. The timing is inherent to the internal decoder and switch driver design - no external timing control or delay circuitry is needed. It is validated across −40°C to +85°C and full supply range.
ADG508AKNZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 300Ohm
- Channel-to-Channel Matching (ΔRon):
- 15Ohm
- Voltage - Supply, Single (V+):
- 10.8V ~ 16.5V
- Voltage - Supply, Dual (V±):
- ±10.8V ~ 16.5V
- Switch Time (Ton, Toff) (Max):
- 300ns, 300ns
- -3db Bandwidth:
- -
- Charge Injection:
- 4pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 22pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
ADG508AKNZ FAQ
1.How can I place an order for ADG508AKNZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADG508AKNZ 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 ADG508AKNZ reliable?
The price and inventory of ADG508AKNZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADG508AKNZ is usually 5 days.
3.What payment methods are accepted for ADG508AKNZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADG508AKNZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADG508AKNZ?
ADG508AKNZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADG508AKNZ 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 ADG508AKNZ?
For technical support, including ADG508AKNZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADG508AKNZ requirements.
6.How does Aetrix verify that ADG508AKNZ is sourced from the original manufacturer or authorized distributors?
All ADG508AKNZ 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 ADG508AKNZ meets industry standards.
7.What is the process for return or replacement of ADG508AKNZ?
All ADG508AKNZ units undergo pre-shipment inspection (PSI). If there is an issue with ADG508AKNZ, 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 ADG508AKNZ part is unused and in its original packaging.
Return procedure for ADG508AKNZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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