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

Vishay Siliconix DG212BDY-T1

Name: DG212BDY-T1
Brand: Vishay Siliconix
SKU: DG212BDY-T1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DG212BDY-T1

Manufacturer:: Vishay Siliconix

Category:: Analog Switches, Multiplexers, Demultiplexers

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

Datasheet:: DG212BDY-T1.pdf

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

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Product details

Overview

DG212BDY-T1 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 sampling in data acquisition front-ends.

For engineers reviewing the DG212BDY-T1 datasheet, DG212BDY-T1 pinout, DG212BDY-T1 application, or DG212BDY-T1 equivalent, key selection criteria include bi-directional analog signal handling up to ±15 V, TTL/CMOS-compatible control logic, low leakage (±0.02 nA), SOIC-16 package compatibility, and verified performance in sample-and-hold and programmable gain amplifier circuits.

Technical Context

The DG212BDY-T1 implements four independent single-pole single-throw (SPST) switches with true bi-directional conduction when enabled and rail-to-rail blocking in the off state. Its silicon-gate CMOS process ensures latch-up immunity via an epitaxial layer and enables stable R_DS(on) matching (≤2 Ω) across channels.

Each switch features integrated charge-injection compensation to minimize transient errors during switching, supports single-supply (up to +25 V) or split-supply (±22 V) configurations, and maintains <100 pA off-leakage at 85 °C - critical for high-impedance sensor interface and precision measurement paths.

Key Specifications

Parameter	Value and Actual Design Meaning
Analog Signal Range	±15 V (full linear range with ±22 V supply rails - supports wide dynamic input signals without clipping)
On-Resistance (R_DS(on))	45 Ω typical (enables <0.1% gain error in 10 kΩ impedance networks)
Charge Injection	1 pC (limits voltage glitch to ≤1 mV on 1 nF hold capacitors - essential for sub-12-bit sample-and-hold accuracy)
Turn-On Time (t_ON)	120 ns (supports >1 MHz multiplexing rates in automated test equipment)
Off-Leakage Current	±0.01 nA max at 25 °C (preserves charge integrity over ≥1 s hold times in high-Z integrators)
Supply Voltage Range	±4.5 V to ±22 V (allows direct interfacing with legacy ±15 V op-amp rails without level-shifting)
Logic Compatibility	TTL/CMOS (accepts 0.8 V / 2.4 V thresholds - interoperable with FPGA and microcontroller GPIO without buffers)

Pinout & Package

Package: 16-pin narrow SOIC (JEDEC MS-012, body width 3.9 mm, lead pitch 1.27 mm). RoHS-compliant, Pb-free termination (T1 suffix).

Pin/Terminal	Circuit Role	Design Meaning
1, 4, 5, 8 (IN1–IN4)	Digital control input	Active-high logic: high = channel ON (DG212B function - normally open)
2, 3, 6, 7 (S1–S4)	Source terminal	Analog input/output node - fully bidirectional; connects to signal source or load
10, 11, 14, 15 (D1–D4)	Drain terminal	Analog input/output node - fully bidirectional; pairs with corresponding Sx pin
9 (V+)	Positive supply rail	Bias for internal switch circuitry; must be ≥\|V−\| for symmetric operation
16 (V−)	Negative supply rail	Enables true bipolar analog signal handling down to –15 V
13 (GND)	Analog/digital reference	Common return for logic and analog sections; requires low-impedance connection
12 (VL)	Logic supply reference	Accepts 5 V for TTL/CMOS logic interface; decoupling capacitor required

Key Features

Feature	Design Value
Low on-resistance matching	ΔR_DS(on) ≤ 2 Ω - minimizes channel-to-channel gain mismatch in multi-path signal conditioning
Enhanced charge injection compensation	1 pC typical - reduces aperture error in sample-and-hold circuits below 0.5 LSB at 12-bit resolution
Rail-to-rail analog blocking	Off-isolation >90 dB at 100 kHz - prevents crosstalk between active and inactive signal paths
Latch-up immunity	Epitaxial substrate design - eliminates risk of destructive latch-up under overvoltage transients
Extended temperature operation	–40 °C to +85 °C full-spec performance - validated for industrial control and field-deployed test gear

Applications

Industrial Data Acquisition	Automated Test Equipment (ATE)
Use Scenario: Multiplexing multiple sensor outputs (thermocouples, strain gauges) into a shared ADC front-end with minimal signal degradation. IC Role / Device Role / Timing Role: Quad SPST analog switch routing low-level mV-range signals while preserving offset stability and linearity. Use Value: 50 Ω R_DS(on) and <0.02 nA leakage ensure <1 µV added offset error and <0.001% gain drift across temperature - meeting Class A DAQ requirements.	Use Scenario: High-speed channel selection in parametric test systems where DUT signals must be routed to precision SMUs or digitizers. IC Role / Device Role / Timing Role: Bi-directional signal path selector enabling both stimulus delivery and response capture through same pins. Use Value: 120 ns t_ON and 95 dB channel-to-channel crosstalk allow 100 kSPS multiplexing with <–70 dB harmonic distortion - compliant with IEEE 1241 test standards.
Programmable Gain Amplifier	Sample-and-Hold Circuit
Use Scenario: Digitally selecting feedback resistors in op-amp gain stages to achieve discrete gain steps (×1, ×10, ×100) without mechanical relays. IC Role / Device Role / Timing Role: Low-leakage switch isolating resistor networks from amplifier input nodes during reconfiguration. Use Value: ±0.01 nA off-leakage prevents gain error drift >0.05% over 24-hour calibration cycles - eliminating manual recalibration in metrology instruments.	Use Scenario: Capturing fast transient waveforms (e.g., pulse radar returns) with minimal droop and aperture uncertainty. IC Role / Device Role / Timing Role: Precision analog switch controlling hold capacitor charging path with sub-nanosecond timing control. Use Value: 1 pC charge injection limits hold-step error to <0.8 mV on 1 nF capacitors - enabling accurate 14-bit waveform digitization at 100 kHz sampling.

Industrial Data Acquisition

Automated Test Equipment (ATE)

Use Scenario: Multiplexing multiple sensor outputs (thermocouples, strain gauges) into a shared ADC front-end with minimal signal degradation.

IC Role / Device Role / Timing Role: Quad SPST analog switch routing low-level mV-range signals while preserving offset stability and linearity.

Use Value: 50 Ω R_DS(on) and <0.02 nA leakage ensure <1 µV added offset error and <0.001% gain drift across temperature - meeting Class A DAQ requirements.

Use Scenario: High-speed channel selection in parametric test systems where DUT signals must be routed to precision SMUs or digitizers.

IC Role / Device Role / Timing Role: Bi-directional signal path selector enabling both stimulus delivery and response capture through same pins.

Use Value: 120 ns t_ON and 95 dB channel-to-channel crosstalk allow 100 kSPS multiplexing with <–70 dB harmonic distortion - compliant with IEEE 1241 test standards.

Programmable Gain Amplifier

Sample-and-Hold Circuit

Use Scenario: Digitally selecting feedback resistors in op-amp gain stages to achieve discrete gain steps (×1, ×10, ×100) without mechanical relays.

IC Role / Device Role / Timing Role: Low-leakage switch isolating resistor networks from amplifier input nodes during reconfiguration.

Use Value: ±0.01 nA off-leakage prevents gain error drift >0.05% over 24-hour calibration cycles - eliminating manual recalibration in metrology instruments.

Use Scenario: Capturing fast transient waveforms (e.g., pulse radar returns) with minimal droop and aperture uncertainty.

IC Role / Device Role / Timing Role: Precision analog switch controlling hold capacitor charging path with sub-nanosecond timing control.

Use Value: 1 pC charge injection limits hold-step error to <0.8 mV on 1 nF capacitors - enabling accurate 14-bit waveform digitization at 100 kHz sampling.

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 signal routing; limited to unipolar industrial sensors and PLC I/O modules	Select when system uses only positive supplies and cost sensitivity outweighs bipolar capability
ADG1412BRUZ	Lower R_DS(on) (1.3 Ω typ) but higher charge injection (12 pC); requires external logic level translation for 3.3 V control	Better for low-impedance audio routing; unsuitable for high-resolution sampling due to injected charge	Prefer for precision DC-coupled multiplexing where speed and on-resistance dominate over hold accuracy

Compared with MAX4617ESE+ and ADG1412BRUZ, the DG212BDY-T1 uniquely balances ±22 V bipolar operation, 1 pC charge injection, and 50 Ω on-resistance - making it the only option among the three qualified for rail-to-rail sample-and-hold and programmable gain amplifier designs requiring sub-12-bit error budgets.

Availability

DG212BDY-T1 is available at Aetrix Electronics and suitable for industrial instrumentation, automated test equipment, and precision data acquisition systems requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for DG212BDY-T1 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 components and analog ICs, with core expertise in power management, sensing, and precision signal conditioning technologies.

The DG212BDY-T1 belongs to Vishay's improved quad analog switch product line, engineered specifically for high-fidelity signal routing in test and measurement, industrial control, and medical instrumentation where low leakage, low distortion, and rail-to-rail analog performance are mandatory.

FAQ

What is the maximum continuous analog signal voltage the DG212BDY-T1 can handle?

The DG212BDY-T1 supports analog signals from V− to V+, with absolute maximum ratings of ±22 V on the supply rails. When operated at ±15 V supplies, it reliably passes ±15 V signals without distortion or clamping - confirmed by the VANALOG specification of –15 V to +15 V under standard test conditions. This makes DG212BDY-T1 suitable for interfacing directly with legacy ±15 V op-amp stages and industrial sensor outputs.

Does the DG212BDY-T1 require separate logic and analog ground connections?

No - the DG212BDY-T1 uses a single GND pin (Pin 13) shared for both digital control and analog reference. However, layout best practices require low-inductance, star-point grounding with separate analog and digital ground planes tied at this pin to prevent noise coupling. The VL pin (Pin 12) accepts 5 V logic supply but references the same GND, eliminating need for isolated logic grounds.

Can the DG212BDY-T1 operate from a single +12 V supply?

Yes - the DG212BDY-T1 supports single-supply operation from +4.5 V to +25 V. At +12 V, its analog signal range is 0 V to +12 V (per single-supply specs), R_DS(on) rises to 90 Ω typical, and t_ON remains ≤300 ns. This configuration is validated for use in portable instruments and computer peripherals where negative rails are unavailable.

How does the DG212BDY-T1 differ from the DG211B variant?

The DG212BDY-T1 is a normally open (NO) switch: logic high on INx turns the corresponding Sx–Dx path ON. In contrast, the DG211B is normally closed (NC): logic high turns the path OFF. Both share identical R_DS(on), leakage, and timing specs, but their truth tables are complementary - making DG212BDY-T1 ideal for enable-gated signal paths and DG211B better suited for fail-safe disconnect applications.

Is the DG212BDY-T1 pin-compatible with older DG212 variants?

Yes - the DG212BDY-T1 is a direct replacement for DG212DY and DG212BDY in the 16-pin narrow SOIC package. Pin assignments, electrical characteristics, and thermal specifications are identical per Vishay's ordering table and datasheet revision J. No PCB layout changes are required when upgrading from non-B versions to the improved DG212BDY-T1.

DG212BDY-T1 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Packaging:: Tape & Reel (TR)

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-T1 FAQ

1.How can I place an order for DG212BDY-T1 through Aetrix?

Please submit a Request for Quotation (RFQ) for DG212BDY-T1 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-T1 reliable?

The price and inventory of DG212BDY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG212BDY-T1 is usually 5 days.

3.What payment methods are accepted for DG212BDY-T1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG212BDY-T1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DG212BDY-T1?

DG212BDY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DG212BDY-T1 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-T1?

For technical support, including DG212BDY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG212BDY-T1 requirements.

6.How does Aetrix verify that DG212BDY-T1 is sourced from the original manufacturer or authorized distributors?

All DG212BDY-T1 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-T1 meets industry standards.

7.What is the process for return or replacement of DG212BDY-T1?

All DG212BDY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG212BDY-T1, 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-T1 part is unused and in its original packaging.

Return procedure for DG212BDY-T1:

1.Submit a request within 90 days.

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

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