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Vishay Siliconix DG211BDY-T1
- Part No.:
- DG211BDY-T1
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG211BDY-T1.pdf
- Description:
- IC SWITCH SPST-NCX4 85OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,452
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Product details
Overview
DG211BDY-T1 from Vishay Siliconix is a quad, normally closed (NC), single-pole single-throw (SPST) CMOS analog switch optimized for precision signal routing in ±15 V dual-supply systems. It delivers 50 Ω typical on-resistance, 20 pA max off-leakage, 120 ns turn-on time, and 1 pC charge injection - enabling high-fidelity sample-and-hold and low-distortion multiplexing in test equipment and instrumentation.
For engineers reviewing the DG211BDY-T1 datasheet, DG211BDY-T1 pinout, DG211BDY-T1 application, or DG211BDY-T1 equivalent, key selection criteria include its ±22 V supply rating, bi-directional analog signal handling up to ±15 V, TTL/CMOS-compatible logic interface, and TSSOP-16 package suitability for space-constrained PCB layouts.
Technical Context
The DG211BDY-T1 implements four independent NC analog switches fabricated in Vishay's silicon-gate CMOS process, featuring epitaxial latchup protection and improved charge injection compensation versus legacy DG211. Each channel supports true bi-directional conduction when ON and blocks signals to supply rails when OFF.
It operates across -40 °C to +85 °C with logic supply (VL) decoupled from analog supplies (V+, V-), allowing mixed-voltage system interfacing. The device sustains continuous analog signals from -15 V to +15 V under ±15 V supplies and handles peak pulsed currents up to 100 mA per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±4.5 V to ±22 V - supports wide analog input swing without rail-to-rail limitation |
| On-Resistance (RDS(on)) | 45 Ω typ. at ±15 V - minimizes 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 typ. - reduces aperture error and settling disturbance in fast-switching data acquisition |
| Turn-On Time (tON) | 120 ns max. - enables sub-microsecond channel switching for real-time signal routing |
| Analog Signal Range | -15 V to +15 V - fully utilizes ±15 V supply rails for maximum dynamic range |
| Logic Compatibility | TTL/CMOS with VINH ≥ 2.4 V, VINL ≤ 0.8 V - interfaces directly with standard 5 V microcontrollers |
Pinout & Package
Package: 16-pin TSSOP (JEDEC MO-153, Vishay Doc. 74417), 5.00 mm × 6.40 mm footprint, 0.65 mm pitch, 1.10 mm height - suitable for automated SMT assembly and high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 (IN1–IN4) | Digital control inputs | Active-low logic for NC channels: logic 0 = ON, logic 1 = OFF |
| 5, 6, 12, 13 (S1–S4) | Source terminals | Analog inputs/outputs - bi-directional, referenced to V+ and V- rails |
| 7, 8, 11, 10 (D1–D4) | Drain terminals | Analog inputs/outputs - electrically identical to sources in ON state |
| 9 (V-) | Negative analog supply | Bias reference for full negative swing; must be connected for proper operation |
| 14 (V+) | Positive analog supply | Bias reference for full positive swing; supports up to ±22 V rating |
| 15 (GND) | Digital ground reference | Return path for logic inputs; isolated from analog supplies to minimize noise coupling |
| 16 (VL) | Logic supply voltage | Accepts 2.4 V to 5.5 V - enables level-shifting between 3.3 V/5 V logic and ±15 V analog domains |
Key Features
| Feature | Design Value |
|---|---|
| Normally closed (NC) topology | Ensures fail-safe signal continuity during power loss or logic fault - critical for safety-critical monitoring paths |
| ±22 V absolute max supply rating | Provides 2× margin over ±15 V industrial standards - improves long-term reliability under transient overvoltage |
| Epitaxial latchup protection | Eliminates risk of destructive latchup in high-noise industrial environments with rapid supply sequencing |
| Low 1 pC charge injection | Reduces hold-mode voltage step error to <1 mV in 1 nF sample capacitors - meets 12-bit+ acquisition accuracy |
| Single-supply operation support | Operates from +4.5 V to +25 V (V+ only, V- = GND) - simplifies power architecture in portable instruments |
Applications
| Industrial Instrumentation | Test Equipment |
|---|---|
Use Scenario: Multiplexing sensor inputs (thermocouples, strain gauges) into a shared ADC front-end with minimal crosstalk and offset drift. IC Role / Device Role / Timing Role: Quad NC analog switch routing differential analog signals while maintaining channel isolation >90 dB at 100 kHz. Use Value: Enables 4:1 analog multiplexing without external biasing or level-shifting, preserving 16-bit measurement integrity across temperature. |
Use Scenario: Configuring programmable filter cutoff frequencies in automated test fixtures using switched capacitor networks. IC Role / Device Role / Timing Role: Digitally controlled SPST switch selecting between 150 pF and 1500 pF feedback capacitors in active low-pass filters. Use Value: Provides four independent, low-charge-injection paths to change filter break frequency without signal disruption or settling transients. |
| Disk Drive Read/Write Circuits | Portable Precision Instruments |
Use Scenario: Isolating head preamplifier outputs during seek operations to prevent signal corruption from motor drive noise. IC Role / Device Role / Timing Role: Normally closed switch inserted in analog signal path; opens only during mechanical actuation to block noise injection. Use Value: Leverages NC behavior to maintain default signal continuity while enabling clean, fast (<200 ns) interruption during critical timing windows. |
Use Scenario: Sample-and-hold circuit in handheld multimeters where battery-powered operation demands ultra-low leakage and low supply current. IC Role / Device Role / Timing Role: Analog switch controlling acquisition phase; holds voltage on 1000 pF capacitor with <5 mV droop over 1 s. Use Value: Achieves 5 mV/s droop rate via 20 pA max off-leakage - extends hold time without active refresh, conserving battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617ESE+ | Quad NO (normally open), 60 Ω RDS(on), ±20 V rating, SOIC-16 package | Requires active logic assertion to pass signal; unsuitable for fail-safe NC paths | Select when default-open behavior is required and board layout accommodates SOIC-16 footprint |
| ADG1411BRUZ | Quad SPST, 1.8 Ω RDS(on), ±15 V rating, TSSOP-16, but NO configuration only | Lower on-resistance but no NC variant; lacks ±22 V margin and 1 pC charge injection spec | Prefer for ultra-low distortion audio routing where NC function is not mandatory and supply headroom is limited |
Compared with DG211BDY-T1, MAX4617ESE+ offers NO functionality and SOIC packaging - requiring PCB redesign and logic inversion - while ADG1411BRUZ trades NC capability and high-voltage margin for lower on-resistance, making it unsuitable for safety-critical default-closed paths.
Availability
DG211BDY-T1 is available at Aetrix Electronics and suitable for industrial instrumentation, automated test equipment, and disk drive controller designs requiring stable component supply, long-lifecycle support, and RoHS-compliant TSSOP packaging.
Supply support for DG211BDY-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 leadership in power MOSFETs, diodes, optoelectronics, and precision analog switches.
The DG211B family was designed specifically for high-reliability analog signal routing in industrial and test systems - emphasizing low leakage, high voltage tolerance, and robust latchup immunity over consumer-grade alternatives.
FAQ
What is the maximum analog signal voltage range supported by the DG211BDY-T1?
The DG211BDY-T1 supports analog signals from -15 V to +15 V when operated with ±15 V supplies. Its absolute maximum rating allows ±22 V supply rails, enabling safe operation with transient overvoltages. Signals exceeding V+ or V- are clamped by internal diodes - forward current must be limited to avoid damage. This range makes DG211BDY-T1 suitable for industrial sensor interfaces and precision instrumentation where full rail utilization is required.
Is the DG211BDY-T1 a normally open or normally closed switch?
The DG211BDY-T1 is a normally closed (NC) analog switch: each of its four channels conducts when the corresponding INx input is logic low (≤0.8 V), and blocks when INx is logic high (≥2.4 V). This NC behavior ensures signal continuity during power-down or logic faults - a key requirement in safety-critical monitoring and sample-and-hold applications. The DG212B variant is the complementary normally open version.
Can the DG211BDY-T1 operate from a single +12 V supply?
Yes, the DG211BDY-T1 supports single-supply operation from +4.5 V to +25 V (V+ only), with V- tied to GND. In this mode, the analog signal range is 0 V to +12 V, and specifications such as RDS(on) (90 Ω typ.) and tON (300 ns max.) are guaranteed per the single-supply section of the datasheet. Logic supply (VL) remains independent and can be 5 V, enabling clean interface with microcontrollers even in single-rail systems.
What is the thermal derating behavior of the DG211BDY-T1 above 75 °C?
For the DG211BDY-T1 in TSSOP-16 package, power dissipation must be derated by 7.6 mW/°C above 75 °C ambient. Its rated power dissipation is 640 mW at ≤75 °C. At 105 °C ambient, maximum allowable power drops to 426 mW. This derating ensures junction temperature stays within safe limits under sustained load - critical in enclosed industrial enclosures where airflow is restricted and ambient temperatures exceed 85 °C.
How does the charge injection specification of 1 pC impact sample-and-hold performance in the DG211BDY-T1?
The DG211BDY-T1's 1 pC typical charge injection directly determines aperture error in sample-and-hold circuits: for a 1000 pF hold capacitor, ΔV = Q/C = 1 mV step error. This low value - verified at room temperature with CL = 1000 pF - enables sub-12-bit accuracy without post-acquisition correction. Combined with 20 pA max off-leakage, it supports >1 s hold times with <5 mV droop, meeting requirements for handheld multimeters and portable data loggers.
DG211BDY-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- 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
DG211BDY-T1 FAQ
1.How can I place an order for DG211BDY-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG211BDY-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 DG211BDY-T1 reliable?
The price and inventory of DG211BDY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG211BDY-T1 is usually 5 days.
3.What payment methods are accepted for DG211BDY-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG211BDY-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG211BDY-T1?
DG211BDY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG211BDY-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 DG211BDY-T1?
For technical support, including DG211BDY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG211BDY-T1 requirements.
6.How does Aetrix verify that DG211BDY-T1 is sourced from the original manufacturer or authorized distributors?
All DG211BDY-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 DG211BDY-T1 meets industry standards.
7.What is the process for return or replacement of DG211BDY-T1?
All DG211BDY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG211BDY-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 DG211BDY-T1 part is unused and in its original packaging.
Return procedure for DG211BDY-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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