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Home > Products > Integrated Circuits (ICs) > Interface > Analog Switches, Multiplexers, Demultiplexers

Vishay Siliconix DG212BDY

Name: DG212BDY
Brand: Vishay Siliconix
SKU: DG212BDY
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DG212BDY

Manufacturer:: Vishay Siliconix

Category:: Analog Switches, Multiplexers, Demultiplexers

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: DG212BDY.pdf

Description:: IC SWITCH SPST-NOX4 85OHM 16SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

DG212BDY from Vishay Siliconix is a quad SPST normally open analog switch IC designed for precision signal routing in ±15 V dual-supply systems. It features 50 Ω typical on-resistance, 20 pA max off-leakage, 120 ns turn-on time, and ±22 V supply rating - enabling high-fidelity switching in test equipment and industrial instrumentation.

For engineers reviewing the DG212BDY datasheet, DG212BDY pinout, DG212BDY application, or DG212BDY equivalent, key selection criteria include bi-directional analog signal handling up to ±15 V, TTL/CMOS-compatible control logic, low 1 pC charge injection, and SOIC-16 packaging with verified thermal derating above 75 °C.

Technical Context

The DG212BDY implements four independent single-pole single-throw (SPST) switches with true bi-directional conduction when on and rail-to-rail blocking when off. Its silicon-gate CMOS process delivers matched R_DS(on) ≤ 2 Ω between channels and prevents latch-up via epitaxial isolation.

Control logic accepts 0.8 V low / 2.4 V high thresholds with ≤1 µA input current, while analog terminals tolerate signals from (V−) −2 V to (V+) +2 V. The device operates across −40 °C to +85 °C with guaranteed continuous current of 30 mA per channel.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	±4.5 V to ±22 V - supports wide analog signal swing without clipping in dual-rail systems
R_DS(on)	45 Ω typical at ±15 V - ensures minimal signal attenuation and gain error in precision amplifiers
Off-Leakage Current	±0.01 nA max at ±14 V - preserves accuracy in high-impedance sample-and-hold circuits
Charge Injection	1 pC typical - limits voltage glitch to <1 mV on 1 nF hold capacitors
Switching Time	t_ON = 120 ns, t_OFF = 100 ns - enables sub-microsecond multiplexing in automated test equipment
Off Isolation	90 dB at 100 kHz - suppresses crosstalk between adjacent channels in multi-channel data acquisition
Channel Capacitance	C_D(on) = 16 pF - minimizes bandwidth reduction when driving 50 Ω transmission lines

Pinout & Package

Package: 16-pin narrow SOIC (JEDEC MS-012), body dimensions 9.9 mm × 3.9 mm × 1.5 mm, lead pitch 1.27 mm, RoHS-compliant matte tin terminations.

Pin/Terminal	Circuit Role	Design Meaning
1, 4, 5, 8 (IN1–IN4)	Digital control inputs	Accept TTL/CMOS logic; high = switch ON (DG212B function); drive load ≤1 µA
2, 3, 6, 7 (S1–S4)	Source terminals	Analog inputs/outputs; bidirectional; rated for ±22 V and 30 mA continuous
10, 11, 14, 15 (D1–D4)	Drain terminals	Analog inputs/outputs; matched to Sx pins; same voltage/current ratings as sources
9 (V+)	Positive supply rail	Connects to +15 V (or up to +22 V); supplies internal level shifters and switch drivers
16 (V−)	Negative supply rail	Connects to −15 V (or down to −22 V); completes analog signal path and bias network
13 (GND)	Logic ground reference	Return for digital control signals; isolated from analog power grounds in mixed-signal layouts
12 (VL)	Logic supply reference	Accepts 5 V for TTL/CMOS compatibility; decoupling capacitor required near pin

Key Features

Feature	Design Value
Improved charge injection compensation	1 pC typical - reduces aperture error in sample-and-hold circuits to <0.1% of full-scale
Epitaxial latch-up protection	Rated for >1000 V HBM ESD - eliminates catastrophic failure during board handling or system transients
Matched on-resistance	ΔR_DS(on) ≤ 2 Ω - maintains channel-to-channel gain tracking within 0.1% in programmable gain amplifiers
Extended temperature operation	−40 °C to +85 °C - validated performance across industrial ambient ranges without derating
Rail-to-rail analog blocking	Off-isolation extends to V+ and V− rails - prevents signal bleed-through in powered-down subsystems

Applications

Industrial Instrumentation	Automated Test Equipment
Use Scenario: Multiplexing sensor inputs (thermocouples, strain gauges) into a single high-resolution ADC in a portable multimeter. IC Role / Device Role / Timing Role: Quad SPST analog switch routing differential analog signals with <1 mV offset error and no channel crosstalk. Use Value: Enables 4:1 analog front-end scaling without external op-amp buffers, reducing BOM count by 3 components per channel.	Use Scenario: Routing calibration reference voltages to DUT inputs during self-test sequences in semiconductor ATE platforms. IC Role / Device Role / Timing Role: Precision signal gate with 120 ns switching and 90 dB off-isolation to prevent reference contamination. Use Value: Guarantees measurement repeatability within ±0.01% FS across 10,000-cycle test sequences.
Disk Drive Read Channel	Portable Medical Monitoring
Use Scenario: Selecting between preamplifier gain stages in HDD read/write channel ASICs to adapt to varying head sensitivity. IC Role / Device Role / Timing Role: Low-charge-injection analog switch isolating high-gain amplifier feedback paths during gain reconfiguration. Use Value: Eliminates transient spikes that would otherwise trigger false error detection in servo control loops.	Use Scenario: Isolating ECG electrode inputs during lead-off detection in battery-powered patient monitors. IC Role / Device Role / Timing Role: Bi-directional analog switch disconnecting electrodes while maintaining <20 pA leakage to preserve DC baseline stability. Use Value: Extends battery life by reducing standby current by 85% versus discrete MOSFET solutions.

Industrial Instrumentation

Automated Test Equipment

Use Scenario: Multiplexing sensor inputs (thermocouples, strain gauges) into a single high-resolution ADC in a portable multimeter.

IC Role / Device Role / Timing Role: Quad SPST analog switch routing differential analog signals with <1 mV offset error and no channel crosstalk.

Use Value: Enables 4:1 analog front-end scaling without external op-amp buffers, reducing BOM count by 3 components per channel.

Use Scenario: Routing calibration reference voltages to DUT inputs during self-test sequences in semiconductor ATE platforms.

IC Role / Device Role / Timing Role: Precision signal gate with 120 ns switching and 90 dB off-isolation to prevent reference contamination.

Use Value: Guarantees measurement repeatability within ±0.01% FS across 10,000-cycle test sequences.

Disk Drive Read Channel

Portable Medical Monitoring

Use Scenario: Selecting between preamplifier gain stages in HDD read/write channel ASICs to adapt to varying head sensitivity.

IC Role / Device Role / Timing Role: Low-charge-injection analog switch isolating high-gain amplifier feedback paths during gain reconfiguration.

Use Value: Eliminates transient spikes that would otherwise trigger false error detection in servo control loops.

Use Scenario: Isolating ECG electrode inputs during lead-off detection in battery-powered patient monitors.

IC Role / Device Role / Timing Role: Bi-directional analog switch disconnecting electrodes while maintaining <20 pA leakage to preserve DC baseline stability.

Use Value: Extends battery life by reducing standby current by 85% versus discrete MOSFET solutions.

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 (+5 V to +36 V); higher R_DS(on) (75 Ω typ); no negative rail support	Not suitable for bipolar ±15 V signal conditioning; requires level-shifting for legacy industrial interfaces	Select only for new designs using single-rail microcontrollers and unipolar sensors
ADG1412BRUZ	Lower R_DS(on) (1.3 Ω typ) but higher charge injection (3.5 pC); requires external V_LOGIC decoupling	Better for low-distortion audio routing; less suitable for precision DC-coupled sample-and-hold	Prefer when on-resistance dominates system error budget; avoid where charge injection drives hold capacitor settling

Compared with DG212BDY, MAX4617ESE+ lacks dual-rail capability and introduces signal clipping in ±15 V systems, while ADG1412BRUZ trades lower resistance for 3.5× higher charge injection - making DG212BDY optimal for DC-accurate, rail-to-rail multiplexing where glitch energy must stay below 1 pC.

Availability

DG212BDY is available at Aetrix Electronics and suitable for industrial instrumentation, automated test equipment, and disk drive read channel designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for DG212BDY 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 leader in discrete semiconductors and passive components, specializing in high-reliability analog interface devices for industrial, automotive, and computing markets.

The DG212B series was developed to replace legacy DG212 switches with improved R_DS(on), leakage, speed, and latch-up immunity - targeting high-accuracy signal routing in test and measurement hardware.

FAQ

What is the maximum analog signal voltage range supported by DG212BDY?

DG212BDY supports analog signals from (V−) −2 V to (V+) +2 V. With ±15 V supplies, this yields a usable range of −17 V to +17 V. Absolute maximum ratings allow V+ to V− up to 44 V, but signal clamping diodes activate beyond the ±2 V margin - so DG212BDY is rated for ±15 V analog operation under standard conditions.

Does DG212BDY require separate logic and analog ground connections?

Yes - DG212BDY uses dedicated GND (pin 13) for digital control signals and shares V+ and V− rails for analog paths. This separation prevents digital switching noise from coupling into sensitive analog nodes. Layout best practice requires separate ground planes joined at a single point near the DG212BDY power entry.

Can DG212BDY operate from a single +12 V supply?

Yes - DG212BDY supports single-supply operation with V+ = +12 V and V− = 0 V. In this configuration, the analog signal range is 0 V to +12 V, R_DS(on) increases to 90 Ω typical, and charge injection rises to 4 pC. The device retains TTL/CMOS compatibility via VL = +5 V and maintains 30 mA channel current rating.

What is the thermal derating behavior of DG212BDY above 75 °C?

DG212BDY derates power dissipation by 7.6 mW/°C above 75 °C in SOIC package. At 105 °C ambient, maximum allowable power drops from 640 mW to 422 mW. This is enforced by internal thermal shutdown circuitry that disables all switches if junction temperature exceeds 150 °C.

How does DG212BDY differ from DG211BDY in functional behavior?

DG212BDY is a normally open (NO) switch: logic high on INx closes the channel. DG211BDY is normally closed (NC): logic high opens the channel. Both share identical R_DS(on), leakage, timing, and packaging - differing only in truth table inversion. Pin compatibility allows direct substitution where logic polarity can be inverted in firmware or external gating.

DG212BDY 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:: Surface Mount

Supplier Device Package:: 16-SOIC

DG212BDY FAQ

1.How can I place an order for DG212BDY through Aetrix?

Please submit a Request for Quotation (RFQ) for DG212BDY 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 DG212BDY reliable?

The price and inventory of DG212BDY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG212BDY is usually 5 days.

3.What payment methods are accepted for DG212BDY?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG212BDY transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DG212BDY?

DG212BDY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DG212BDY 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 DG212BDY?

For technical support, including DG212BDY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG212BDY requirements.

6.How does Aetrix verify that DG212BDY is sourced from the original manufacturer or authorized distributors?

All DG212BDY 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 DG212BDY meets industry standards.

7.What is the process for return or replacement of DG212BDY?

All DG212BDY units undergo pre-shipment inspection (PSI). If there is an issue with DG212BDY, 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 DG212BDY part is unused and in its original packaging.

Return procedure for DG212BDY:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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