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Vishay Siliconix DG412LDY-T1
- Part No.:
- DG412LDY-T1
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG412LDY-T1.pdf
- Description:
- IC SWITCH SPST-NOX4 17OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,412
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Product details
Overview
DG412LDY-T1 from Vishay Siliconix is a precision monolithic quad SPST low-voltage CMOS analog switch with break-before-make switching action, 17 Ω typical RDS(on), 19 ns tON, and ±3 V to ±6 V dual-supply or 2.7 V to 12 V single-supply operation - used in precision data acquisition signal routing where low distortion and high off-isolation are critical.
For engineers reviewing the DG412LDY-T1 datasheet, DG412LDY-T1 pinout, DG412LDY-T1 application, or DG412LDY-T1 equivalent, key selection considerations include its complementary logic control versus DG411L, guaranteed 2000 V ESD protection, -50 dB off-isolation at 50 MHz, and narrow SOIC-16 package compatibility with legacy DG412 footprints.
Technical Context
The DG412LDY-T1 implements four independent normally-open analog switches with inverted control logic relative to DG411L (logic "0" = ON, logic "1" = OFF), enabling complementary channel pairing in multiplexer or relay-replacement designs. Its BiCMOS process ensures flat on-resistance over the full analog signal range and minimal charge injection (5 pC).
It supports rail-to-rail analog signal switching across ±5 V dual supply or 0–12 V single supply, with TTL/CMOS-compatible digital inputs (VIL ≤ 0.8 V, VIH ≥ 2.4 V) and dedicated VL pin for logic-level translation independent of analog supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RDS(on) | 17 Ω typical at V+ = 12 V - enables low insertion loss & minimal signal attenuation in audio/video paths |
| tON/tOFF | 19 ns / 12 ns - supports high-speed multiplexing up to ~25 MHz without timing skew |
| Off-isolation | -50 dB at 50 MHz - suppresses crosstalk between adjacent switched channels in dense layouts |
| Charge injection | 5 pC - limits voltage glitch on sampled nodes, critical for precision ADC front-ends |
| ESD rating | 2000 V HBM - withstands handling and board-level ESD events without latch-up or parametric shift |
| Analog range | ±5 V (dual) or 0–12 V (single) - accommodates industrial sensor outputs and consumer line-level signals |
| Leakage current | 0.25 nA max at 25 °C - preserves accuracy in high-impedance measurement circuits |
Pinout & Package
Package: 16-pin narrow SOIC (JEDEC MS-012, 3.9 mm width), RoHS-compliant, rated for -40 °C to +85 °C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 (IN1–IN4) | Digital control input | Active-low logic: INx = 0 V → corresponding switch ON; compatible with 3.3 V/5 V microcontrollers |
| 2, 6, 10, 14 (S1–S4) | Source terminal | Analog input node; bidirectional, supports rail-to-rail signal swing within supply limits |
| 3, 7, 11, 15 (D1–D4) | Drain terminal | Analog output node; electrically identical to Sx, forms SPST path when switch closed |
| 4 (V−) | Negative supply | Required for dual-supply operation; tied to GND for single-supply use |
| 8 (V+) | Positive supply | Primary analog power rail; sets upper bound of switchable signal range |
| 12 (GND) | Ground reference | Return path for digital logic and substrate bias; must be low-impedance for noise immunity |
| 16 (VL) | Logic supply | Decouples logic threshold from analog rails; accepts 2.7–5.5 V for mixed-voltage system interfacing |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Prevents momentary shorting between channels during state transitions - essential for fault-tolerant signal routing |
| Flat RDS(on) vs. signal voltage | ≤5 Ω variation across full analog range - maintains consistent gain and linearity in AC-coupled paths |
| TTL/CMOS input compatibility | VIL ≤ 0.8 V, VIH ≥ 2.4 V - eliminates need for level-shifting buffers when driven by standard logic |
| Low off-capacitance | CS(off) = 5 pF, CD(off) = 6 pF - minimizes capacitive loading on unselected channels in high-frequency multiplexers |
| High crosstalk rejection | -95 dB at 1 MHz - isolates sensitive analog paths (e.g., sensor inputs) from noisy digital or power domains |
Applications
| Precision Data Acquisition | Audio Signal Routing |
|---|---|
Use Scenario: Multiplexing multiple low-level sensor outputs (thermocouples, strain gauges) into a single high-resolution ADC channel. IC Role / Device Role / Timing Role: Quad SPST switch providing channel selection with sub-nA leakage and <5 pC charge injection to preserve DC accuracy. Use Value: Enables 16-bit+ measurement integrity by eliminating switch-induced offset drift and sampling glitches. | Use Scenario: Routing line-level stereo signals between multiple sources (DAC, Bluetooth module, aux input) and amplifier inputs. IC Role / Device Role / Timing Role: Low-distortion analog path selector with 280 MHz -3 dB bandwidth and flat RDS(on). Use Value: Maintains wide dynamic range (>110 dB SNR) and phase coherence across all selected paths. |
| Communication System Front-End | Battery-Powered Instrumentation |
Use Scenario: Switching RF IF signals in DSLAM line cards or SDSL transceivers between test loops and active lines. IC Role / Device Role / Timing Role: High-isolation (–50 dB @ 50 MHz), fast-switching (19 ns) analog gate for signal path reconfiguration. Use Value: Prevents signal bleed and timing jitter during hot-swap or calibration mode changes. | Use Scenario: Managing power domain isolation and sensor interface routing in portable multimeters or handheld analyzers. IC Role / Device Role / Timing Role: Ultra-low quiescent current (1 µA max I+) analog switch enabling >1-year battery life in sleep mode. Use Value: Reduces standby power by >95% compared to mechanical relays while retaining signal fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4612ESE+ | Higher RDS(on) (45 Ω typ), slower tON (45 ns), no VL pin - requires matched logic/analog supplies | Less suitable for mixed-voltage systems; acceptable where speed and on-resistance tolerance >2× original spec | Select when cost sensitivity outweighs performance requirements and layout allows single-supply logic interface |
| ADG1412BRUZ | Lower RDS(on) (1.3 Ω typ), higher supply voltage (up to ±15 V), but larger TSSOP-16 package and no break-before-make guarantee | Better for high-precision, high-voltage industrial DAQ; incompatible with space-constrained SOIC layouts | Choose for ultra-low on-resistance needs where PCB real estate permits larger footprint and dual-supply headroom is available |
Compared with MAX4612ESE+ and ADG1412BRUZ, the DG412LDY-T1 uniquely balances low RDS(on), fast switching, break-before-make assurance, and SOIC-16 compatibility - making it optimal for space-constrained, mixed-supply precision instrumentation where timing integrity and layout continuity are critical.
Availability
DG412LDY-T1 is available at Aetrix Electronics and suitable for precision data acquisition, audio signal routing, and battery-powered instrumentation requiring stable component supply and long-term manufacturing continuity.
Supply support for DG412LDY-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 leader in discrete semiconductors and passive components, specializing in high-reliability, high-performance analog solutions for industrial, automotive, and computing markets.
The DG412LDY-T1 belongs to Vishay's precision analog switch family designed specifically for low-distortion, rail-to-rail signal routing in test equipment, communications infrastructure, and portable measurement systems.
FAQ
What is the logic polarity of DG412LDY-T1 control inputs?
The DG412LDY-T1 uses active-low logic: applying logic "0" (≤ 0.8 V) to any INx pin turns the corresponding switch ON, while logic "1" (≥ 2.4 V) turns it OFF. This is the inverse of DG411L, enabling complementary channel control in differential or redundant signal paths. The DG412LDY-T1 datasheet confirms this behavior in the Truth Table on page 1.
Can DG412LDY-T1 operate from a single 3.3 V supply?
Yes - the DG412LDY-T1 supports single-supply operation from 2.7 V to 12 V. At V+ = 3.3 V, RDS(on) increases to 80 Ω (max), tON extends to 85 ns, and analog signal range is 0–3.3 V. All specifications remain valid per the "Single Supply 3 V" table on page 6 of the DG412LDY-T1 datasheet.
Does DG412LDY-T1 require external pull-up resistors on its INx pins?
No - the DG412LDY-T1 has CMOS-compatible inputs with IIL ≤ ±1.5 µA across temperature, allowing direct connection to microcontroller GPIOs without pull-ups. Input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.4 V) are internally defined and stable across supply voltages, as verified in the Digital Control section on page 3.
What is the maximum analog signal frequency supported by DG412LDY-T1?
The DG412LDY-T1 maintains –3 dB insertion loss up to 280 MHz under 12 V single-supply conditions, as specified in the DESCRIPTION section (page 1). For 50 Ω systems, off-isolation remains >68 dB up to 1 MHz and >40 dB up to 100 MHz, making it suitable for IF switching in DSL and broadband communication front-ends.
Is DG412LDY-T1 pin-compatible with the legacy DG412?
Yes - the DG412LDY-T1 is explicitly described as a "low voltage pin-for-pin compatible companion device to the industry standard DG412" (page 1, DESCRIPTION). It shares identical pinout, SOIC-16 footprint, and functional mapping, while improving RDS(on), switching speed, and ESD robustness over the original DG412.
DG412LDY-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):
- 17Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 2.7V ~ 12V
- Voltage - Supply, Dual (V±):
- ±3V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 19ns, 12ns
- -3db Bandwidth:
- 280MHz
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 5pF, 6pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -95dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG412LDY-T1 FAQ
1.How can I place an order for DG412LDY-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG412LDY-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 DG412LDY-T1 reliable?
The price and inventory of DG412LDY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG412LDY-T1 is usually 5 days.
3.What payment methods are accepted for DG412LDY-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG412LDY-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG412LDY-T1?
DG412LDY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG412LDY-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 DG412LDY-T1?
For technical support, including DG412LDY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG412LDY-T1 requirements.
6.How does Aetrix verify that DG412LDY-T1 is sourced from the original manufacturer or authorized distributors?
All DG412LDY-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 DG412LDY-T1 meets industry standards.
7.What is the process for return or replacement of DG412LDY-T1?
All DG412LDY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG412LDY-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 DG412LDY-T1 part is unused and in its original packaging.
Return procedure for DG412LDY-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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