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Analog Devices Inc./Maxim Integrated DG407EWI
- Part No.:
- DG407EWI
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
DG407EWI.pdf
- Description:
- IC MUX DUAL 8:1 100OHM 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,971
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Product details
Overview
DG407EWI from Maxim Integrated is a dual 8-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, and operates from ±4.5V to ±20V dual supplies or +5V to +30V single supply. Used in data-acquisition systems where channel-to-channel consistency and rail-to-rail analog signal handling are critical.
For engineers reviewing the DG407EWI datasheet, DG407EWI pinout, DG407EWI application, or DG407EWI equivalent, key selection criteria include guaranteed on-resistance matching across channels, low leakage (<5nA at +85°C), enable-controlled break-before-make switching, TTL/CMOS-compatible digital inputs, and ESD protection >2000V per MIL-STD 883 Method 3015.7.
Technical Context
The DG407EWI implements a dual independent 8:1 analog switch architecture with separate address decoding (A0–A2) and enable (EN) control per 8-channel bank. Each channel conducts bidirectionally with matched RDS(ON) and flat on-resistance over the full analog signal range (±15V typical).
It uses CMOS transmission-gate topology with substrate tied to V+, enabling rail-to-rail analog signal handling. Digital inputs meet TTL/CMOS voltage thresholds (VAL ≤0.8V, VAH ≥2.4V), and internal clamping diodes protect against overvoltage when signals exceed V+ or V−.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 100Ω - Ensures minimal signal attenuation and gain error in precision measurement paths |
| On-Resistance Matching (max) | 8Ω - Guarantees consistent gain and offset across all 16 channels in differential or multi-channel acquisition |
| On-Resistance Flatness (max) | 9Ω - Maintains linearity and low THD over full ±15V analog input range |
| Charge Injection (max) | 15pC - Limits voltage glitch on sample-and-hold capacitors, preserving ADC accuracy |
| Input Leakage (max) | 5nA at +85°C - Prevents significant DC error in high-impedance sensor interfaces |
| Supply Range | ±4.5V to ±20V dual or +5V to +30V single - Supports industrial, test, and avionics power architectures |
| ESD Protection | >2000V per MIL-STD 883 Method 3015.7 - Enables robust handling in manufacturing and field environments |
Pinout & Package
DG407EWI is housed in a 28-pin wide SO (SOIC-W) package, RoHS-compliant and lead-free, with 1.27mm pitch and standard JEDEC MS-013 outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | V+, DB | Positive supply input and Bidirectional Output B - V+ powers both banks; DB serves as common output for second 8-channel bank |
| 3, 13, 14 | N.C. | No internal connection - Must be left unconnected; not usable for grounding or bypassing |
| 4–11 | S8B–S1B | Bidirectional analog inputs for Bank B - Accepts signals up to ±20V with matched on-resistance |
| 12 | GND | Ground reference - Required for logic interface and internal biasing; must be low-impedance |
| 15–17 | A2, A1, A0 | Address inputs for Bank A - Select one of eight S1A–S8A channels under EN control |
| 18 | EN | Enable input for Bank A - Active-high; disables all switches in Bank A when low |
| 19–26 | S1A–S8A | Bidirectional analog inputs for Bank A - Independent 8-channel set, identical specs to Bank B |
| 27 | V− | Negative supply input - Completes dual-supply operation; required for ±V operation |
| 28 | DA | Bidirectional Output A - Common output for first 8-channel bank; shares no internal connection with DB |
Key Features
| Feature | Design Value |
|---|---|
| Pin-compatible upgrade | Direct replacement for legacy DG407 - No PCB redesign needed; preserves layout and firmware |
| Rail-to-rail signal handling | Supports analog inputs from V− to V+ - Eliminates level-shifting in ±15V instrumentation front-ends |
| Break-before-make switching | Guaranteed tOPEN ≥110ns - Prevents momentary shorting between channels during address changes |
| TTL/CMOS-compatible control | VAL ≤0.8V, VAH ≥2.4V - Interfaces directly with microcontrollers and FPGAs without level translation |
| Low power consumption | 1.25mW max at +25°C - Reduces thermal drift and simplifies thermal management in dense layouts |
Applications
| Sample-and-Hold Circuits | Test Equipment |
|---|---|
Use Scenario: Multiplexing multiple sensor outputs into a single high-precision sample-and-hold amplifier before ADC conversion. IC Role / Device Role / Timing Role: Dual-bank analog switch providing synchronized, low-charge-injection channel selection with break-before-make timing. Use Value: 15pC max charge injection minimizes hold-step error; 8Ω matching ensures uniform settling across channels. | Use Scenario: Automated test systems requiring reconfigurable signal routing between DUT, instruments, and reference sources. IC Role / Device Role / Timing Role: Precision analog mux enabling programmable path selection with <100Ω on-resistance and >69dB off-isolation. Use Value: 9Ω on-resistance flatness maintains amplitude accuracy across full ±15V range; >2000V ESD protects against handler-induced discharge. |
| Guidance and Control Systems | Audio Signal Routing |
Use Scenario: Redundant sensor monitoring in flight control units, where mismatched channel resistance could induce bias errors in feedback loops. IC Role / Device Role / Timing Role: Dual 8:1 mux delivering matched gain paths for cross-checked analog telemetry streams. Use Value: Guaranteed 8Ω max RDS(ON) matching eliminates differential offset between redundant channels. | Use Scenario: Professional audio mixers routing line-level signals between inputs, effects processors, and outputs. IC Role / Device Role / Timing Role: Low-distortion analog switch supporting rail-to-rail ±15V audio swing without clipping. Use Value: 9Ω flatness ensures consistent frequency response; 100Ω max RDS(ON) avoids loading high-Z sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG407BRZ | Higher on-resistance (120Ω typ), wider temp range (−40°C to +125°C), different pinout (SOIC-28 but non-pin-compatible) | Preferred for extended temperature environments; requires PCB redesign due to differing address/control pin mapping | Select when operating beyond +85°C is required and layout revision is acceptable |
| MAX4617ESE+ | Single 8-channel mux (not dual), lower on-resistance (60Ω max), smaller 16-pin SO package | Suitable for space-constrained designs needing only one 8-channel bank; lacks second independent bank | Choose when dual-bank functionality is unnecessary and board area is limited |
Compared with ADG407BRZ and MAX4617ESE+, the DG407EWI uniquely delivers pin-compatible dual 8:1 functionality with guaranteed 8Ω matching and 15pC charge injection-critical for simultaneous multi-channel acquisition where inter-channel consistency and sampling fidelity are non-negotiable.
Availability
DG407EWI is available at Aetrix Electronics and suitable for data-acquisition systems, test equipment, and guidance and control systems requiring stable component supply across industrial temperature ranges (−40°C to +85°C).
Supply support for DG407EWI 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) is a fabless semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing markets.
The DG407EWI belongs to Maxim's high-precision analog multiplexer product line, engineered for applications demanding guaranteed channel matching, low charge injection, and robust operation across wide supply and temperature ranges.
FAQ
What is the operating temperature range for DG407EWI?
The DG407EWI is rated for −40°C to +85°C operation. This extended industrial temperature range is validated across all electrical specifications including on-resistance matching (≤8Ω), charge injection (≤15pC), and leakage current (<5nA at +85°C). The "E" grade designation in DG407EWI explicitly denotes this temperature capability, making it suitable for harsh-environment applications such as avionics monitoring and industrial PLC I/O modules.
Is DG407EWI pin-compatible with the original DG407?
Yes, DG407EWI is a pin-compatible plug-in upgrade for the industry-standard DG407. Its 28-pin wide SO package maintains identical pin assignments for V+, V−, GND, DA, DB, EN, A0–A2, and all 16 analog terminals (S1A–S8A, S1B–S8B). No PCB or firmware changes are required-only benefits from improved specs including tighter on-resistance matching and lower charge injection.
Can DG407EWI operate from a single supply?
Yes, DG407EWI supports +5V to +30V single-supply operation. When using single supply, connect V− to GND. The device maintains rail-to-rail analog signal handling from 0V to V+, with on-resistance flatness and matching guaranteed across the full range. Note that switching times increase by 2× at 5V versus 15V, as confirmed in the Typical Operating Characteristics graphs.
What is the maximum analog signal range supported by DG407EWI?
DG407EWI supports an analog signal range from V− to V+, up to ±20V with dual supplies or 0V to +30V with single supply. The absolute maximum ratings allow V+ up to +44V referenced to V−, but the guaranteed analog range is limited by supply rails: ±15V typical, ±20V maximum per datasheet Electrical Characteristics tables. Exceeding V+ or V− at analog pins triggers internal clamping diodes.
Does DG407EWI require external pull-up or pull-down resistors on address lines?
No, DG407EWI does not require external biasing on A0–A2 or EN. Its digital inputs are TTL/CMOS-compatible with defined thresholds (VAL ≤0.8V, VAH ≥2.4V) and have low input current (±1.0µA max), allowing direct connection to microcontroller GPIOs or FPGA outputs. Internal input structures provide adequate noise immunity without external resistors, simplifying system design and reducing BOM count.
DG407EWI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- 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±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 200ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 65pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -92dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SOIC
DG407EWI FAQ
1.How can I place an order for DG407EWI through Aetrix?
Please submit a Request for Quotation (RFQ) for DG407EWI 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 DG407EWI reliable?
The price and inventory of DG407EWI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG407EWI is usually 5 days.
3.What payment methods are accepted for DG407EWI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG407EWI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG407EWI?
DG407EWI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG407EWI 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 DG407EWI?
For technical support, including DG407EWI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG407EWI requirements.
6.How does Aetrix verify that DG407EWI is sourced from the original manufacturer or authorized distributors?
All DG407EWI 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 DG407EWI meets industry standards.
7.What is the process for return or replacement of DG407EWI?
All DG407EWI units undergo pre-shipment inspection (PSI). If there is an issue with DG407EWI, 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 DG407EWI part is unused and in its original packaging.
Return procedure for DG407EWI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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