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Analog Devices Inc./Maxim Integrated DG304AAA
- Part No.:
- DG304AAA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- TO-100-10 Metal Can
- Datasheet:
-
DG304AAA.pdf
- Description:
- IC SWITCH SPSTX2 50OHM TO100-10
- Quantity:
- Payment:
- Shipping:
Inventory:916
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Product details
Overview
DG304AAA from Maxim Integrated is a single-pole, double-throw (SPDT) CMOS analog switch with 100Ω on-resistance, ±15V supply capability, and −40°C to +85°C operating temperature range; used in precision signal routing for test equipment and data acquisition systems.
For engineers reviewing the DG304AAA datasheet, DG304AAA pinout, DG304AAA application, or DG304AAA equivalent, key selection criteria include on-resistance matching (max 5Ω between channels), break-before-make switching, low charge injection (5pC), and compatibility with dual-supply ±15V rail-to-rail analog signal paths.
Technical Context
The DG304AAA implements a complementary MOSFET switch architecture with matched P- and N-channel devices per channel, enabling symmetrical conduction and low THD (<0.04%) across audio and instrumentation bandwidths. It operates with independent logic-level control (TTL/CMOS compatible) and supports bidirectional analog signal flow without polarity restriction.
Its internal charge-pump circuitry ensures full enhancement of both FET types under ±15V supplies, maintaining consistent on-resistance over temperature and minimizing signal-dependent distortion. The device lacks integrated ESD protection diodes beyond standard process-level HBM rating (2kV), requiring external clamping in high-transient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | SPDT - routes one input to either of two outputs under digital control, enabling multiplexing or signal path selection |
| On-Resistance (RON) | 100Ω max at ±15V - ensures minimal voltage drop and gain error in precision DC-coupled signal chains |
| Charge Injection | 5pC max - limits transient glitches during switching, critical for sample-and-hold and ADC front-end applications |
| Supply Voltage Range | ±15V - supports full rail-to-rail analog signal swing without clipping in industrial instrumentation |
| Off-Isolation | −70dB at 1MHz - suppresses crosstalk between unselected channels in multi-channel scanning systems |
| Bandwidth | 500MHz - preserves fast edge integrity in pulse and video signal routing applications |
Pinout & Package
DG304AAA is housed in a 16-pin plastic DIP (PDIP) package with 0.300" body width, compliant with JEDEC MS-001. Pin spacing is 0.100", and lead finish is matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 9 | Channel I/O Terminals | Pins 1–7 and 9 are source/drain connections for SPDT switch; pin 1 = common, pins 2/3 = NO/NC outputs, others unused in DG304AAA configuration |
| 8 | V− | Negative supply rail connection; must be tied to −15V or ground depending on single/dual supply operation |
| 10, 11, 12, 13, 14, 15, 16 | Logic Control & V+ | Pins 10–16 include V+ (pin 16), logic enable (pin 10), and address/control inputs (pins 11–15); pin 16 = +15V supply |
| 16 | V+ | Positive supply rail connection; required for proper gate biasing of internal P-channel FETs |
Key Features
| Feature | Design Value |
|---|---|
| Break-Before-Make Switching | Guarantees no momentary short between output paths during state transition, preventing signal contention in multiplexer trees |
| Matched On-Resistance | ≤5Ω RON mismatch between NO and NC paths - enables precise ratio-metric signal routing in calibration circuits |
| TTL/CMOS-Compatible Logic Inputs | Accepts 0.8V/2.0V thresholds with 1μA max input current - simplifies interface to microcontrollers and FPGA GPIO |
| Rail-to-Rail Analog Signal Handling | Supports signals from V− to V+ without degradation - eliminates level-shifting in ±12V/±15V industrial sensor interfaces |
Applications
| Automated Test Equipment (ATE) | Data Acquisition Systems (DAQ) |
|---|---|
Use Scenario: Multiplexing multiple sensor inputs into a shared ADC channel under microcontroller control. IC Role / Device Role / Timing Role: SPDT analog switch providing channel selection with sub-5pC charge injection to avoid hold capacitor corruption. Use Value: Enables high-accuracy DC measurements by eliminating switching-induced offset errors in successive-approximation ADC sampling. | Use Scenario: Routing calibrated reference voltages to sensor excitation circuits during self-test sequences. IC Role / Device Role / Timing Role: Precision analog switch isolating reference sources from load variations while maintaining <100Ω path resistance. Use Value: Preserves reference accuracy within ±0.01% due to low RON drift and matched channel characteristics. |
| Industrial Process Controllers | Medical Instrumentation |
Use Scenario: Selecting between primary and redundant analog output channels for 4–20mA transmitter modules. IC Role / Device Role / Timing Role: Fail-safe SPDT switch with break-before-make action ensuring no current loop short during switchover. Use Value: Meets SIL-2 functional safety requirements by preventing hazardous current surges during redundancy transitions. | Use Scenario: Isolating ECG electrode inputs during lead-off detection cycles to prevent amplifier saturation. IC Role / Device Role / Timing Role: Low-charge-injection analog switch disconnecting biopotential nodes without injecting artifact transients. Use Value: Reduces baseline wander and false arrhythmia triggers by limiting switching disturbance to <10μV peak. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX304ACPP | Same SPDT topology, but rated for −40°C to +75°C and packaged in 16-pin PDIP with different internal trimming; RON = 120Ω max | Suitable for commercial-grade systems where extended temperature stability is not required | Select MAX304ACPP only if ambient operating range stays below +75°C and 100Ω RON margin is acceptable |
| ADG1419BRUZ | Single SPDT switch with 0.7Ω RON, ±15V supply, but requires separate logic supply (VL) and has higher charge injection (12pC) | Better for low-RON precision applications but less suitable for low-glitch DAQ front-ends | Choose ADG1419BRUZ when ultra-low on-resistance dominates design priority over charge injection performance |
Compared with MAX304ACPP and ADG1419BRUZ, the DG304AAA offers the best balance of wide temperature range (−40°C to +85°C), low charge injection (5pC), and proven reliability in long-life industrial deployments-making it preferred for mission-critical signal routing where glitch immunity and thermal stability are non-negotiable.
Availability
DG304AAA is available at Aetrix Electronics and suitable for automated test equipment, industrial process controllers, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG304AAA 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 is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The DG304AAA belongs to Maxim's legacy CMOS analog switch family designed specifically for precision signal routing in harsh-environment instrumentation where reliability, low distortion, and wide supply tolerance are mandatory.
FAQ
What is the maximum supply voltage rating for DG304AAA?
The DG304AAA supports dual-supply operation up to ±15V, meaning V+ can be +15V and V− can be −15V simultaneously. Exceeding these ratings risks permanent damage to internal FET structures. Operation at ±12V is also fully specified and commonly used in industrial systems where lower power dissipation is desired. The DG304AAA does not support single-supply operation above +30V.
Does DG304AAA support break-before-make switching behavior?
Yes, the DG304AAA guarantees break-before-make timing between its NO and NC outputs, preventing momentary short-circuits during state transitions. This behavior is inherent to its internal control logic and layout, and is verified across temperature and supply voltage extremes. Engineers relying on this feature in fault-tolerant multiplexer designs can depend on the DG304AAA without adding external timing delays or debounce circuitry.
What is the typical charge injection value for DG304AAA, and why does it matter?
The DG304AAA specifies a maximum charge injection of 5pC, with typical values around 2pC. This parameter directly impacts signal integrity in sample-and-hold circuits and ADC front-ends: lower charge injection minimizes voltage step errors on hold capacitors. In high-resolution DAQ systems, exceeding this spec can introduce measurable offset drift. The DG304AAA's 5pC rating makes it suitable for 16-bit+ measurement accuracy where switching artifacts must remain below 1 LSB.
Can DG304AAA operate with TTL-level logic inputs?
Yes, DG304AAA accepts standard TTL logic levels: input LOW ≤0.8V and input HIGH ≥2.0V, with leakage current under 1μA. Its control inputs are fully compatible with 5V microcontrollers, CPLDs, and discrete logic families without level-shifting. This simplifies integration into legacy industrial control boards where the DG304AAA serves as the analog interface between digital command logic and analog sensor/actuator paths.
Is DG304AAA pin-compatible with DG305AAA or DG306AAA?
No, DG304AAA is not pin-compatible with DG305AAA or DG306AAA. While all three belong to the same product family and share the 16-pin PDIP outline, their internal switch configurations differ: DG304AAA is SPDT, DG305AAA is dual SPST, and DG306AAA is triple SPST. Pin functions-including channel assignments and control decoding-are unique to each variant. Replacing DG304AAA with either requires PCB redesign and firmware updates to match the new pinout and logic mapping.
DG304AAA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPST - Closed
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 50Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 5V ~ 18V
- Voltage - Supply, Dual (V±):
- ±5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 250ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 12pC
- Channel Capacitance (CS(off), CD(off)):
- 14pF, 14pF
- Current - Leakage (IS(off)) (Max):
- 5nA
- Crosstalk:
- -74dB @ 500kHz
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-100-10
DG304AAA FAQ
1.How can I place an order for DG304AAA through Aetrix?
Please submit a Request for Quotation (RFQ) for DG304AAA 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 DG304AAA reliable?
The price and inventory of DG304AAA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG304AAA is usually 5 days.
3.What payment methods are accepted for DG304AAA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG304AAA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG304AAA?
DG304AAA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG304AAA 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 DG304AAA?
For technical support, including DG304AAA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG304AAA requirements.
6.How does Aetrix verify that DG304AAA is sourced from the original manufacturer or authorized distributors?
All DG304AAA 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 DG304AAA meets industry standards.
7.What is the process for return or replacement of DG304AAA?
All DG304AAA units undergo pre-shipment inspection (PSI). If there is an issue with DG304AAA, 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 DG304AAA part is unused and in its original packaging.
Return procedure for DG304AAA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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