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Analog Devices Inc./Maxim Integrated DG303AAK/883B
- Part No.:
- DG303AAK/883B
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-CDIP (0.300", 7.62mm)
- Datasheet:
-
DG303AAK/883B.pdf
- Description:
- IC SWITCH SPDT X 2 50OHM 14CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,961
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Product details
Overview
DG303AAK/883B from Maxim Integrated is a dual SPDT CMOS analog switch designed for precision signal routing in high-reliability systems. It features <50Ω on-resistance, ±15V analog signal range (V+ to V−), break-before-make switching, 150ns turn-on time, and operates across −55°C to +125°C. It is used in military-grade telemetry and programmable gain amplifiers where low charge injection (12pC) and latchup-proof construction are critical.
For engineers reviewing the DG303AAK/883B datasheet, DG303AAK/883B pinout, DG303AAK/883B application, or DG303AAK/883B equivalent, key selection criteria include dual SPDT topology, MIL-PRF-38535 Class B qualification (883B), 10-lead metal can package, and compatibility with ±5V to ±18V dual supplies or +10V to +30V single supply (V− = GND).
Technical Context
The DG303AAK/883B implements two independent SPDT switches using monolithic CMOS process with substrate-isolated construction. Each switch supports rail-to-rail analog signals from V− to V+, with TTL/CMOS-compatible digital inputs (0.8V/4.0V thresholds) and guaranteed break-before-make timing of 50ns.
Its architecture delivers matched on-resistance (<50Ω typ), low off-leakage (±0.1nA), and minimal charge injection (12pC), enabling accurate sample-and-hold and low-distortion multiplexing in battery-powered and aerospace instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15V - Supports full-rail switching from V− to V+ without clipping or distortion. |
| On-Resistance (RDS(ON)) | <50Ω - Ensures minimal voltage drop and signal attenuation in precision analog paths. |
| Turn-On Time (tON) | 150ns - Enables fast channel selection in real-time control and data acquisition systems. |
| Charge Injection | 12pC - Limits output voltage glitch in sample-and-hold circuits, preserving DC accuracy. |
| Off-Leakage Current | ±0.1nA - Maintains high impedance isolation (>100MΩ) between channels at temperature extremes. |
| Supply Range | ±5V to ±18V - Allows flexible biasing in dual-supply industrial and avionics environments. |
| Operating Temperature | −55°C to +125°C - Qualified per MIL-PRF-38535 Class B for extended-life military/aerospace use. |
Pinout & Package
Package: 10-lead hermetically sealed metal can (TO-100), with V+ connected to case/substrate for thermal and shielding integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10 | V+ | Positive supply input; also electrically tied to metal can for EMI suppression and thermal conduction. |
| 2, 9 | S1, S2 | Common source terminals for SPDT switches - serve as signal inputs/outputs depending on state. |
| 3, 8 | D1A, D2A | First throw terminals (SPDT "A" position) - routed when corresponding IN = logic high. |
| 4, 7 | D1B, D2B | Second throw terminals (SPDT "B" position) - routed when corresponding IN = logic low. |
| 5, 6 | IN1, IN2 | TTL/CMOS-compatible digital control inputs - active-high, with 0.8V/4.0V thresholds. |
| GND | Ground reference | Signal ground reference point; separate from power return to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Break-Before-Make Switching | Guaranteed 50ns interval prevents momentary shorting between throws - essential for safe multiplexer sequencing. |
| Latchup-Proof Construction | Monolithic CMOS with guard rings and substrate isolation eliminates destructive latchup under transient overvoltage. |
| Rail-to-Rail Analog Range | Switches signals from V− to V+ without level-shifting - simplifies interface with op-amps and ADCs operating at supply rails. |
| Low Charge Injection (12pC) | Minimizes hold-step error in sample-and-hold circuits - enables sub-12-bit accuracy without trimming. |
| MIL-PRF-38535 Class B Qualification | Includes screening for burn-in, temperature cycling, and hermeticity - ensures reliability in mission-critical platforms. |
Applications
| Telemetry Signal Routing | Programmable Gain Amplifier |
|---|---|
Use Scenario: Multiplexing sensor outputs (e.g., thermocouples, strain gauges) in satellite telemetry modules under radiation-hardened conditions. IC Role / Device Role / Timing Role: Dual SPDT analog switch selecting between calibration references and active sensors during periodic self-test cycles. Use Value: Break-before-make action prevents cross-talk between high-impedance sensor nodes; ±15V range accommodates unbuffered transducer outputs. | Use Scenario: Configuring feedback resistor networks in wide-dynamic-range instrumentation amplifiers for medical imaging front-ends. IC Role / Device Role / Timing Role: Precision analog switch setting discrete gain steps via resistor ladder while maintaining signal path integrity. Use Value: <50Ω RDS(ON) and 0.1nA leakage preserve gain accuracy and offset stability across −55°C to +125°C. |
| Low-Power Sample/Hold | Power-Supply Sequencing |
Use Scenario: Capturing analog waveforms in portable spectrum analyzers powered by Li-ion batteries. IC Role / Device Role / Timing Role: SPDT switch isolating hold capacitor from input during acquisition phase and connecting it to output during hold phase. Use Value: 12pC charge injection limits hold-step error to <1mV with 10nF hold capacitor - extends battery life via low I+/I− (0.5µA typical). | Use Scenario: Controlling power-up order of FPGA I/O banks and core logic in airborne computing modules. IC Role / Device Role / Timing Role: Dual SPDT switch enabling/disabling voltage rails with controlled timing margin between domains. Use Value: Guaranteed 50ns break-before-make interval prevents back-powering and latchup during supply transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG433BRZ | 4-channel SPST, not SPDT; 24-lead SOIC; 25Ω RDS(ON); −40°C to +85°C only | Requires external logic for SPDT emulation; unsuitable for −55°C operation or hermetic packaging | Select only if SPST topology and commercial temp range suffice; not drop-in for DG303AAK/883B. |
| HI-508ACD | Quad SPST, 28-lead CERDIP; 45Ω RDS(ON); MIL-STD-883 qualified but no 883B screening | Lacks guaranteed break-before-make; higher charge injection (25pC); different pinout and package footprint | Consider for cost-sensitive non-mission-critical designs where SPST suffices and 883B is not mandated. |
Compared with ADG433BRZ and HI-508ACD, the DG303AAK/883B uniquely provides true dual SPDT functionality in a hermetic 10-lead metal can with MIL-PRF-38535 Class B qualification, making it irreplaceable in flight-critical signal routing where topology, packaging, and screening are non-negotiable.
Availability
DG303AAK/883B is available at Aetrix Electronics and suitable for aerospace telemetry, ruggedized instrumentation, and defense electronics requiring stable component supply across extended temperature and lifecycle demands.
Supply support for DG303AAK/883B 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial and aerospace applications.
The DG300–DG303A family was engineered for precision analog switching in resource-constrained, high-reliability systems - emphasizing low power, rail-to-rail signal handling, and robustness against latchup and ESD.
FAQ
What is the maximum supply voltage rating for DG303AAK/883B?
The DG303AAK/883B supports dual supplies up to ±18V (absolute maximum V+ = +36V for DG300–DG303, +44V for DG300A–DG303A). For standard operation, ±15V is typical. Single-supply mode is supported with V− tied to GND and V+ ranging from +10V to +30V. Exceeding these ratings risks permanent damage per Absolute Maximum Ratings table.
Does DG303AAK/883B support break-before-make switching, and is it guaranteed?
Yes, DG303AAK/883B guarantees break-before-make operation with a minimum 50ns interval between turn-off of one throw and turn-on of the other, specifically validated for DG303(A) devices per the Break-Before-Make Time Test Circuit (Figure 2). This prevents signal shorting during state transitions - critical for protecting downstream circuitry in telemetry and gain-switching applications.
What is the on-resistance matching between channels in DG303AAK/883B?
Typical on-resistance matching between the two SPDT channels in DG303AAK/883B is 10%, as stated in Applications Information. This tight matching ensures consistent gain and signal attenuation across both switched paths - vital for differential and ratiometric measurement systems where channel-to-channel tracking matters.
Can DG303AAK/883B be used with single-supply operation, and what are the logic level requirements?
Yes, DG303AAK/883B supports single-supply operation by connecting V− to GND and applying V+ from +10V to +30V. Digital inputs remain TTL/CMOS compatible: logic high = ≥4.0V (min), logic low = ≤0.8V (max), verified across −55°C to +125°C. Input current stays below ±1µA, minimizing drive burden on microcontrollers.
Is DG303AAK/883B pin-compatible with earlier DG303 variants like DG303AK?
Yes, DG303AAK/883B shares identical pinout and electrical behavior with DG303AK (−55°C to +125°C, 10-lead metal can), differing only in its enhanced screening per MIL-PRF-38535 Class B (883B). No PCB layout changes are required when upgrading from DG303AK to DG303AAK/883B - same footprint, same terminal functions, same thermal and electrical interface.
DG303AAK/883B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 50Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- ±5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 300ns, 250ns
- -3db Bandwidth:
- -
- Charge Injection:
- 12pC
- Channel Capacitance (CS(off), CD(off)):
- 14pF, 14pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -74dB @ 500kHz
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-CDIP
DG303AAK/883B FAQ
1.How can I place an order for DG303AAK/883B through Aetrix?
Please submit a Request for Quotation (RFQ) for DG303AAK/883B 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 DG303AAK/883B reliable?
The price and inventory of DG303AAK/883B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG303AAK/883B is usually 5 days.
3.What payment methods are accepted for DG303AAK/883B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG303AAK/883B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG303AAK/883B?
DG303AAK/883B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG303AAK/883B 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 DG303AAK/883B?
For technical support, including DG303AAK/883B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG303AAK/883B requirements.
6.How does Aetrix verify that DG303AAK/883B is sourced from the original manufacturer or authorized distributors?
All DG303AAK/883B 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 DG303AAK/883B meets industry standards.
7.What is the process for return or replacement of DG303AAK/883B?
All DG303AAK/883B units undergo pre-shipment inspection (PSI). If there is an issue with DG303AAK/883B, 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 DG303AAK/883B part is unused and in its original packaging.
Return procedure for DG303AAK/883B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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