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Vishay Siliconix DG212BDJ
- Part No.:
- DG212BDJ
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
DG212BDJ.pdf
- Description:
- IC SWITCH SPST-NOX4 85OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,304
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Product details
Overview
DG212BDJ from Vishay Siliconix is a quad SPST normally open analog switch IC designed for precision signal routing in instrumentation and test systems. It supports ±22 V dual-supply operation, delivers 50 Ω typical on-resistance, 1 pC charge injection, 120 ns turn-on time, and operates across –40 °C to +85 °C - enabling high-fidelity analog switching in sample-and-hold circuits and programmable gain amplifiers.
For engineers reviewing the DG212BDJ datasheet, DG212BDJ pinout, DG212BDJ application, or DG212BDJ equivalent, key selection criteria include its bi-directional signal handling, low leakage (±0.02 nA), TTL/CMOS-compatible control logic, and compatibility with ±15 V and single +12 V supply configurations - critical for industrial data acquisition and communications front-ends.
Technical Context
The DG212BDJ implements four independent, normally open analog switches using silicon-gate CMOS technology, with epitaxial layer latch-up protection and improved charge injection compensation to minimize transients during switching. Each channel supports true bi-directional conduction when on and blocks signals up to the supply rails when off.
It features separate logic supply (VL) for level-shifting, allowing 5 V logic control while operating with ±22 V analog supplies. The device's RDS(on) remains stable across temperature and analog voltage (±15 V), and off-isolation exceeds 90 dB at 100 kHz - confirming suitability for high-precision multiplexing where crosstalk and settling error must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15 V (full rail-to-rail conduction with ±15 V supplies - enables unclipped signal routing in bipolar instrumentation) |
| RDS(on) | 45 Ω typical (low on-resistance minimizes signal attenuation and gain error in precision amplifier feedback paths) |
| Charge Injection | 1 pC typical (reduces voltage glitch and settling time in sample-and-hold applications) |
| tON/tOFF | 120 ns / 100 ns typical (supports >5 MHz multiplexing rates in automated test equipment) |
| ID(off) | ±0.01 nA max at ±14 V (ultra-low leakage preserves capacitor hold voltage for >1 s in S/H circuits) |
| OIRR | 90 dB at 100 kHz (high off-isolation prevents signal coupling between channels in multi-channel DAQ) |
| Supply Range | ±4.5 V to ±22 V continuous (supports wide dynamic range sensing without external level-shifting) |
Pinout & Package
Package: 16-pin plastic DIP (JEDEC MS-012), 0.300" wide body, through-hole mount. Pin pitch: 0.100", lead finish: SnPb (non-RoHS compliant per note *).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 (IN1–IN4) | Digital control input | TTL/CMOS-compatible (0.8 V low / 2.4 V high); controls respective switch state (logic high = ON for DG212BDJ) |
| 2, 5, 11, 14 (S1–S4) | Source terminal | Analog input/output node; bi-directional; rated for ±22 V and 30 mA continuous current |
| 3, 6, 12, 15 (D1–D4) | Drain terminal | Analog input/output node; bi-directional; electrically identical to source in on-state |
| 7 (V−) | Negative analog supply | Reference for analog signal range; must be connected for proper operation; clamped internally |
| 8 (GND) | Digital ground | Return path for logic inputs and VL; isolated from analog grounds in mixed-signal layouts |
| 9 (VL) | Logic supply | Accepts 5 V (or 3 V to 15 V); decouples logic threshold from analog supply rails |
| 16 (V+) | Positive analog supply | Reference for analog signal range; must be connected; clamped internally |
Key Features
| Feature | Design Value |
|---|---|
| Normally open (NO) configuration | Ensures default signal isolation - critical for safety-critical sensor inputs and fail-safe system initialization |
| Separate VL supply pin | Enables 5 V microcontroller control of ±22 V analog paths without level-shifter ICs or discrete components |
| Epitaxial latch-up protection | Guarantees robust operation under transient overvoltage or ESD events in industrial environments |
| Matched RDS(on) (ΔRDS(on) ≤ 2 Ω) | Supports precise channel-to-channel gain matching in multi-path instrumentation front-ends |
| Low CD(on) (16 pF) | Minimizes capacitive loading on driving op-amps - preserves phase margin in active filter designs |
Applications
| Sample-and-Hold Circuits | Precision Programmable-Gain Amplifiers |
|---|---|
Use Scenario: Capturing fast-changing sensor outputs (e.g., thermocouple or strain gauge signals) with minimal aperture error and droop. IC Role / Device Role / Timing Role: DG212BDJ acts as the acquisition switch, closing synchronously with a control pulse to connect the input to the hold capacitor. Use Value: 1 pC charge injection and 50 Ω RDS(on) limit sampling error to <5 mV and enable 1 µs aperture time - meeting MIL-STD-810G Class II requirements. |
Use Scenario: Digitally selecting feedback resistor networks in op-amp-based instrumentation amplifiers for variable gain (×1, ×10, ×100). IC Role / Device Role / Timing Role: DG212BDJ provides low-leakage, low-RDS(on) switching of feedback paths without introducing gain drift or offset voltage shift. Use Value: ±0.01 nA off-leakage ensures <1 µV offset contribution at 1 MΩ feedback, preserving DC accuracy across all gain settings. |
| Automated Test Equipment (ATE) Multiplexers | Communications Channel Selection |
Use Scenario: Routing multiple DUT signals to shared measurement resources (e.g., ADC, oscilloscope input) in benchtop or rack-mounted testers. IC Role / Device Role / Timing Role: DG212BDJ serves as a 4-channel analog multiplexer stage, controlled by FPGA GPIOs to select active signal path. Use Value: 90 dB off-isolation at 100 kHz and 95 dB crosstalk rejection prevent cross-channel interference during simultaneous multi-DUT testing. |
Use Scenario: Selecting between RF front-end signal paths (e.g., antenna diversity, band switching) in baseband analog conditioning stages. IC Role / Device Role / Timing Role: DG212BDJ isolates unused receive chains to suppress LO leakage and intermodulation distortion in full-duplex radios. Use Value: ±22 V rating accommodates 18 V peak-to-peak IF signals; 120 ns tON supports <10 MHz reconfiguration rates for adaptive channel hopping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617ESE+ | Single-supply only (+2.7 V to +12 V); 60 Ω RDS(on); no VL pin; 200 ns tON | Limited to unipolar systems; unsuitable for ±15 V instrumentation or bipolar signal routing | Select when cost-sensitive, single-rail designs dominate and ±22 V capability is unnecessary |
| ADG1412BRUZ | 4-channel, NO, ±15 V rated; 1.8 Ω RDS(on); 100 ns tON; requires 3 V logic; no VL pin | Superior on-resistance but lacks logic supply independence - mandates level-shifting for 5 V controllers | Prefer for ultra-low distortion audio or medical imaging where RDS(on) matching outweighs logic interface flexibility |
Compared with MAX4617ESE+ and ADG1412BRUZ, the DG212BDJ uniquely balances wide supply range (±22 V), logic-level independence (VL pin), and moderate on-resistance - making it optimal for industrial test gear requiring both robustness and controller compatibility without redesign.
Availability
DG212BDJ is available at Aetrix Electronics and suitable for industrial instrumentation, automated test equipment, and precision analog signal routing requiring stable component supply and long-term obsolescence management.
Supply support for DG212BDJ 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
Vishay Siliconix is a global semiconductor manufacturer specializing in discrete MOSFETs, diodes, optoelectronics, and precision analog switches - known for high-reliability, high-voltage, and low-leakage devices.
The DG212BDJ belongs to Vishay's improved DG21xB series, engineered specifically for high-accuracy analog signal switching in harsh industrial and test environments where rail-to-rail operation, low charge injection, and latch-up immunity are mandatory.
FAQ
What is the maximum analog signal voltage the DG212BDJ can switch without damage?
The DG212BDJ supports analog signals up to ±22 V relative to V+ and V−, with absolute maximum ratings specifying V+ to V− = 44 V. Signals exceeding V+ or V− are clamped by internal diodes, but forward diode current must be limited to 30 mA per terminal to avoid damage. This allows safe operation with ±15 V supplies and ±14 V signal swings, as confirmed in the Absolute Maximum Ratings table.
Does the DG212BDJ require a separate logic supply, and why is VL necessary?
Yes, the DG212BDJ requires a dedicated VL supply (typically 5 V) applied to pin 9. VL sets the logic threshold independently of V+ and V−, enabling direct interfacing with 3.3 V or 5 V microcontrollers while operating analog sections at ±15 V. This eliminates external level shifters and ensures reliable switching even when analog and digital supplies differ - a design feature explicitly documented in the Functional Block Diagram and Truth Table.
How does the DG212BDJ differ from the DG211BDJ in functionality and pinout?
The DG212BDJ is a normally open (NO) switch, whereas the DG211BDJ is normally closed (NC). Their pinouts are identical and fully interchangeable in layout, but their truth tables are inverted: logic high turns DG212BDJ ON and DG211BDJ OFF. Both share identical RDS(on), leakage, and timing specs - confirmed in the Description and Truth Table sections of Document Number 70040.
Can the DG212BDJ operate from a single +12 V supply, and what are the resulting analog limits?
Yes, the DG212BDJ supports single-supply operation: with V+ = +12 V and V− = 0 V, the usable analog signal range is 0 V to +12 V. The datasheet specifies RDS(on) = 90–200 Ω and tON = 300 ns under these conditions. Logic inputs remain compatible with 5 V VL, and all timing and leakage specs remain valid - verified in the "SPECIFICATIONS (for Single Supply)" table on page 4.
What is the thermal derating behavior of the DG212BDJ in the 16-pin DIP package?
In the 16-pin plastic DIP package, the DG212BDJ has a power dissipation limit of 470 mW at TA ≤ 75 °C. Above 75 °C, power must be linearly derated at 6.5 mW/°C - meaning maximum allowable power drops to 305.5 mW at 100 °C. This derating curve is specified in Note c on page 2 and applies to all ambient temperatures exceeding 75 °C.
DG212BDJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 85Ohm
- Channel-to-Channel Matching (ΔRon):
- 2Ohm
- Voltage - Supply, Single (V+):
- 4.5V ~ 25V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 22V
- Switch Time (Ton, Toff) (Max):
- 300ns, 200ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 5pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -95dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
DG212BDJ FAQ
1.How can I place an order for DG212BDJ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG212BDJ 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 DG212BDJ reliable?
The price and inventory of DG212BDJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG212BDJ is usually 5 days.
3.What payment methods are accepted for DG212BDJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG212BDJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG212BDJ?
DG212BDJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG212BDJ 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 DG212BDJ?
For technical support, including DG212BDJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG212BDJ requirements.
6.How does Aetrix verify that DG212BDJ is sourced from the original manufacturer or authorized distributors?
All DG212BDJ 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 DG212BDJ meets industry standards.
7.What is the process for return or replacement of DG212BDJ?
All DG212BDJ units undergo pre-shipment inspection (PSI). If there is an issue with DG212BDJ, 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 DG212BDJ part is unused and in its original packaging.
Return procedure for DG212BDJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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