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Analog Devices Inc./Maxim Integrated DG409DJ
- Part No.:
- DG409DJ
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
DG409DJ.pdf
- Description:
- IC SWITCH SP4T X 2 100OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,047
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Product details
Overview
DG409DJ from Maxim Integrated is a dual 4-channel CMOS analog multiplexer/demultiplexer designed for precision signal routing in mixed-signal systems. It features guaranteed on-resistance matching (≤8Ω), flatness (≤9Ω), low charge injection (≤15pC), 100Ω max on-resistance, and operates across ±5V to ±20V dual supplies or +5V to +30V single supply - enabling use in industrial data-acquisition front-ends.
For engineers reviewing the DG409DJ datasheet, DG409DJ pinout, DG409DJ application, or DG409DJ equivalent, key selection criteria include channel matching tolerance, leakage performance at +85°C, enable-controlled break-before-make timing, rail-to-rail analog signal handling, and TTL/CMOS-compatible digital control interface compatibility.
Technical Context
The DG409DJ implements two independent 4:1 analog multiplexers with shared address and enable logic. Each mux uses matched CMOS transmission gates with decoder-driven A0/A1 inputs and EN-level control, supporting bidirectional signal flow without polarity constraints.
Its architecture guarantees monotonic on-resistance vs. analog voltage and temperature, with leakage currents fully tested at +85°C and charge injection characterized across full supply ranges. The device supports unbalanced supplies (e.g., +24V/–5V) and includes internal ESD protection exceeding 2000V per MIL-STD-883 Method 3015.7.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 100Ω max - ensures minimal signal attenuation and gain error in precision gain-setting or sensor-muxing paths |
| On-Resistance Matching | 8Ω max - enables high-accuracy differential measurements and ratiometric sensor readouts |
| On-Resistance Flatness | 9Ω max - maintains consistent gain and linearity across full ±10V analog input range |
| Charge Injection | 15pC max - limits voltage glitch on sample-hold capacitors, critical for 12-bit+ ADC interfaces |
| Input Leakage (T = +85°C) | 5nA max - preserves accuracy in high-impedance transducer or pH probe signal chains |
| Supply Range | ±5V to ±20V dual or +5V to +30V single - supports legacy industrial rails and battery-backed systems |
| Enable Turn-On Time | 150ns max - allows tight timing control in synchronized multi-channel acquisition |
| ESD Protection | >2000V HBM - meets IEC 61000-4-2 Level 2 for field-deployable test equipment |
Pinout & Package
Package: 16-pin Plastic DIP (P16-2), through-hole mounting, 0.300" wide body, operating temperature range –40°C to +85°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A0, A1 | Binary address inputs selecting active channel pair (S1A/S1B through S4A/S4B) |
| 2 | EN | Active-high enable controlling conduction state of both 4:1 muxes simultaneously |
| 3 | V− | Negative supply rail - must be connected for dual-supply operation; tied to GND for single-supply mode |
| 4–7 | S1A–S4A | Bidirectional analog inputs for first 4:1 mux section |
| 8, 9 | DA, DB | Bidirectional analog outputs - DA connects to S1A–S4A; DB connects to S1B–S4B |
| 10–13 | S4B–S1B | Bidirectional analog inputs for second 4:1 mux section (reversed pin order per datasheet top view) |
| 14 | GND | Logic ground reference - separate from analog return paths in mixed-signal layouts |
| 15 | V+ | Positive supply rail - establishes upper analog signal limit and powers internal logic |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Analog signals swing from V− to V+ without clipping - eliminates level-shifting in ±15V instrumentation |
| Guaranteed channel matching | ≤8Ω on-resistance delta between any two channels - enables accurate differential sensing and calibration |
| Low charge injection | ≤15pC - reduces hold-mode error in sample-and-hold circuits driving 10nF+ capacitors |
| TTL/CMOS-compatible control | VAL ≤0.8V / VAH ≥2.4V thresholds - interfaces directly with microcontrollers and FPGAs without level shifters |
| Break-before-make switching | 115ns min open interval - prevents momentary shorting between analog sources during channel change |
| Low power consumption | 1.25mW max at +25°C - suitable for thermally constrained portable test gear and remote sensors |
Applications
| Industrial Data-Acquisition Front-Ends | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Multiplexing 8 thermocouple or RTD inputs into a single high-resolution ADC channel with cold-junction compensation. IC Role / Device Role / Timing Role: Dual 4:1 analog switch providing isolated, low-leakage signal routing under microcontroller address control. Use Value: Guaranteed 8Ω channel matching minimizes inter-channel gain error; 5nA max leakage at +85°C prevents drift in high-Z sensor paths. | Use Scenario: Routing calibrated reference voltages and DUT signals to metrology-grade voltmeters and source-measure units. IC Role / Device Role / Timing Role: Precision analog switch enabling repeatable, low-crosstalk signal path selection during automated calibration sequences. Use Value: –92dB crosstalk and –75dB off-isolation preserve measurement integrity; 150ns enable timing supports 1MHz test sequencing. |
| Avionics Guidance Signal Conditioning | Medical Patient Monitoring Interfaces |
Use Scenario: Selecting among redundant inertial measurement unit (IMU) analog outputs for flight control arbitration logic. IC Role / Device Role / Timing Role: Fault-tolerant analog multiplexer with verified operation across –40°C to +85°C and ESD-hardened I/O. Use Value: MIL-STD-883 qualified variants available; >2000V HBM ESD rating protects against static discharge in aircraft maintenance environments. | Use Scenario: Routing ECG, EEG, and respiration sensor signals to a shared analog front-end in compact bedside monitors. IC Role / Device Role / Timing Role: Low-noise, low-charge-injection analog switch minimizing artifact injection during electrode switching. Use Value: 15pC max charge injection prevents baseline shift in DC-coupled biopotential amplifiers; rail-to-rail support accommodates ±5V sensor swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 4-channel analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG409BRZ | Higher on-resistance (120Ω typ), wider temp range (–40°C to +125°C), no guaranteed matching spec | Preferred where extended temperature operation outweighs matching requirements | Select ADG409BRZ only if system requires >+85°C operation and can tolerate higher RON variation |
| TS5A23157DGSR | Lower voltage range (+1.65V to +5.5V), smaller package (10-pin VSSOP), 0.9Ω on-resistance but limited to 5V systems | Targeted at low-voltage portable medical or consumer devices, not industrial ±15V systems | TS5A23157DGSR is unsuitable for DG409DJ's dual-supply industrial use cases due to voltage incompatibility |
Compared with ADG409BRZ and TS5A23157DGSR, the DG409DJ uniquely delivers guaranteed 8Ω channel matching and 100Ω max on-resistance across ±20V dual supplies - making it the only option for precision ratiometric measurements in legacy industrial control hardware.
Availability
DG409DJ is available at Aetrix Electronics and suitable for industrial data-acquisition systems, automated test equipment, and avionics signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG409DJ 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
Maxim Integrated (now part of Analog Devices) designs high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing applications.
The DG409DJ belongs to Maxim's precision analog multiplexer product line, engineered specifically for applications demanding guaranteed matching, low leakage, and robust operation in harsh electrical environments.
FAQ
What is the maximum allowable supply voltage for DG409DJ in dual-supply configuration?
The DG409DJ supports dual-supply operation from ±5V to ±20V. Absolute maximum ratings specify V+ up to 44V referenced to V−, but functional operation is guaranteed only within the ±5V to ±20V range. Exceeding ±20V risks violating on-resistance flatness and leakage specifications, and may trigger internal clamp diode conduction. Always observe the recommended operating conditions table in the DG409DJ datasheet for reliable performance.
Does DG409DJ support single-supply operation, and how is it configured?
Yes, DG409DJ supports single-supply operation from +5V to +30V. To configure for single supply, connect V− to GND and apply the positive supply to V+. The analog signal range then extends from 0V to V+, maintaining rail-to-rail capability. Digital inputs remain TTL/CMOS compatible. Note that on-resistance increases slightly compared to dual-supply operation, and charge injection remains within the 15pC max specification.
What is the purpose of the break-before-make interval in DG409DJ, and what is its typical value?
The break-before-make interval in DG409DJ prevents momentary shorting between analog input channels during switching. It ensures the previously selected channel is fully disconnected before the next channel connects. The DG409DJ guarantees a minimum 115ns open interval under standard conditions (V± = ±15V, TA = +25°C). This timing is critical in multiplexed sensor systems to avoid cross-talk or damage from back-driving.
How does DG409DJ handle overvoltage conditions on analog inputs?
DG409DJ includes internal ESD protection diodes that clamp analog input voltages exceeding V+ or falling below V−. These diodes conduct when input signals go beyond the supply rails by more than ~0.7V, limiting fault current to 30mA continuous or 100mA pulsed. For sustained overvoltage protection beyond absolute maximum ratings, external series resistors or discrete clamping diodes are required - the DG409DJ itself does not provide active overvoltage tolerance.
Is DG409DJ pin-compatible with the original industry-standard DG409?
Yes, DG409DJ is a pin-compatible plug-in upgrade for the legacy DG409. It shares identical pinout, footprint, and logic-level compatibility with the original part while delivering improved specifications: guaranteed 8Ω channel matching (vs. unspecified in DG409), lower leakage (5nA max at +85°C), and enhanced ESD protection (>2000V HBM). No PCB redesign is needed when upgrading from DG409 to DG409DJ.
DG409DJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 1.5Ohm
- Voltage - Supply, Single (V+):
- 5V ~ 30V
- Voltage - Supply, Dual (V±):
- ±5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 150ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 3pF, 14pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -92dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
DG409DJ FAQ
1.How can I place an order for DG409DJ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG409DJ 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 DG409DJ reliable?
The price and inventory of DG409DJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG409DJ is usually 5 days.
3.What payment methods are accepted for DG409DJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG409DJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG409DJ?
DG409DJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG409DJ 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 DG409DJ?
For technical support, including DG409DJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG409DJ requirements.
6.How does Aetrix verify that DG409DJ is sourced from the original manufacturer or authorized distributors?
All DG409DJ 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 DG409DJ meets industry standards.
7.What is the process for return or replacement of DG409DJ?
All DG409DJ units undergo pre-shipment inspection (PSI). If there is an issue with DG409DJ, 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 DG409DJ part is unused and in its original packaging.
Return procedure for DG409DJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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