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Vishay Siliconix DG412LDQ
- Part No.:
- DG412LDQ
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DG412LDQ.pdf
- Description:
- IC SW SPST-NOX4 17OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,093
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Product details
Overview
DG412LDQ from Vishay Siliconix is a precision monolithic quad SPST analog switch with CMOS/TTL-compatible control logic, 17 Ω on-resistance at 12 V supply, 19 ns turn-on time, and ±3–±6 V dual or 2.7–12 V single supply operation - used in precision data acquisition signal routing where low distortion and break-before-make switching are required.
For engineers reviewing the DG412LDQ datasheet, DG412LDQ pinout, DG412LDQ application, or DG412LDQ equivalent, key selection criteria include guaranteed RDS(on) flatness over signal range, sub-20 ns switching speed at 12 V, 0.25 nA max off-leakage, 2000 V ESD rating, and TSSOP-16 package compatibility with high-density PCB layouts.
Technical Context
The DG412LDQ implements BiCMOS process technology to support both single-supply (2.7–12 V) and dual-supply (±3–±6 V) operation while maintaining consistent logic thresholds (VIL ≤ 0.8 V, VIH ≥ 2.4 V). Its internal architecture enforces break-before-make switching behavior across all four channels.
Each channel features matched source/drain capacitance (CS(off) = 5 pF, CD(off) = 6 pF), 5 pC typical charge injection, and -50 dB off-isolation at 50 MHz - enabling high-fidelity audio/video signal path integrity without crosstalk-induced artifacts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance | 17 Ω at V+ = 12 V - ensures minimal signal attenuation and thermal drift in precision measurement paths |
| Turn-on time | 19 ns at RL = 300 Ω, CL = 35 pF - supports high-speed multiplexing in automated test equipment |
| Off-leakage current | 0.25 nA max - preserves accuracy in high-impedance sensor front-ends and low-current monitoring |
| ESD protection | 2000 V HBM - enables robust handling during board assembly and field service without external clamping |
| Analog signal range | 0 to 12 V (single supply) or ±5 V (dual supply) - covers full rail-to-rail operation for industrial and telecom signal levels |
| Supply voltage range | 2.7–12 V single or ±3–±6 V dual - allows direct integration into battery-powered and mixed-voltage systems |
| Logic compatibility | TTL/CMOS - eliminates level-shifting circuitry when interfacing with FPGA, MCU, or ASIC control buses |
Pinout & Package
Package: 16-pin TSSOP (JEDEC MS-012, body dimensions 5.0 × 4.4 × 1.2 mm, pitch 0.65 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Digital control inputs | Inverted logic vs DG411L: logic '0' = ON state, logic '1' = OFF state per channel |
| S1–S4 | Switch sources | Analog input terminals - connect to signal sources requiring routing or isolation |
| D1–D4 | Switch drains | Analog output terminals - feed downstream ADCs, amplifiers, or transmission lines |
| V+ | Positive supply | Bias for analog channel conduction; must be ≥ V− + 0.3 V and ≤ 13 V |
| V− | Negative supply | Required for dual-supply operation; sets lower analog rail (e.g., −5 V) |
| GND | Ground reference | Common return for digital logic and substrate bias; separate from analog ground in mixed-signal designs |
| VL | Logic supply | Independent 3–5 V rail for control inputs - decouples logic noise from analog performance |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed inter-channel isolation during state transitions - prevents momentary short-circuits in multi-path routing |
| Flat RDS(on) over signal range | ±5 Ω variation from 0 to 12 V - maintains linear gain and low THD in audio/video applications |
| Low charge injection | 5 pC typical - minimizes voltage glitches at switched nodes, critical for sample-and-hold and integrator circuits |
| High off-isolation | −50 dB at 50 MHz - suppresses RF coupling between adjacent channels in high-frequency signal routing |
| Wide supply flexibility | Operates from 2.7 V single supply up to ±6 V dual - supports portable, industrial, and telecom power architectures |
Applications
| Precision Data Acquisition | Audio Signal Routing |
|---|---|
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge signals into a 24-bit sigma-delta ADC with <1 µV offset drift. IC Role / Device Role / Timing Role: Quad SPST switch providing channel-selectable signal path with <0.25 nA leakage and 17 Ω RDS(on) to preserve measurement resolution. Use Value: Enables 0.001% linearity over full temperature range without calibration due to flat on-resistance and low thermal EMF. | Use Scenario: Routing stereo line-level signals between multiple DAC outputs and headphone/line-out amplifiers in a pro-audio mixer. IC Role / Device Role / Timing Role: Low-distortion analog switch with 280 MHz −3 dB bandwidth and −50 dB off-isolation at 50 MHz. Use Value: Eliminates audible click/pop during channel switching and prevents crosstalk-induced phase cancellation in stereo imaging. |
| Battery-Powered Test Equipment | DSLAM Signal Conditioning |
Use Scenario: Portable multimeter front-end selecting between voltage, current, and resistance measurement modes with auto-ranging. IC Role / Device Role / Timing Role: Quad SPST switch operating from 3.3 V single supply with 19 ns tON, enabling fast mode switching without measurement latency. Use Value: Extends battery life via 1 µA max supply current and avoids external level shifters due to TTL/CMOS compatibility. | Use Scenario: Channel selection and impedance matching in SDSL line driver/receiver modules within DSL access multiplexers. IC Role / Device Role / Timing Role: High-speed analog switch supporting 280 MHz bandwidth and 2000 V ESD protection for telco-grade surge immunity. Use Value: Maintains signal integrity across ADSL2+ frequency bands while surviving lightning-induced transients on copper loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4612ESE+ | Higher RDS(on) (45 Ω typ at 5 V), slower tON (40 ns), no dual-supply support | Optimized for 3–5 V only systems; lacks ± supply capability for bipolar signal routing | Select when cost sensitivity outweighs speed and supply flexibility requirements |
| ADG1412BRUZ | Lower RDS(on) (1.3 Ω typ), higher supply current (200 µA), requires 5 V logic supply | Targets ultra-low distortion audio; consumes 200× more quiescent current than DG412LDQ | Select when sub-ohm on-resistance justifies increased power and layout complexity |
Compared with MAX4612ESE+ and ADG1412BRUZ, the DG412LDQ delivers optimal balance of speed (19 ns), low leakage (0.25 nA), dual-supply operation, and ultra-low power (1 µA), making it uniquely suited for portable precision instrumentation where supply headroom and signal fidelity are jointly constrained.
Availability
DG412LDQ is available at Aetrix Electronics and suitable for precision data acquisition, audio signal routing, battery-powered test equipment, and DSLAM signal conditioning requiring stable component supply across extended temperature ranges (-40 °C to +85 °C).
Supply support for DG412LDQ 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 DG412LDQ belongs to the DG41xL family of low-voltage CMOS analog switches designed specifically for high-fidelity signal routing in test and measurement, telecom, and audio systems where low on-resistance, fast switching, and rail-to-rail operation are essential.
FAQ
What supply configurations does the DG412LDQ support?
The DG412LDQ supports both single-supply operation from 2.7 V to 12 V and dual-supply operation from ±3 V to ±6 V. The VL pin accepts an independent 3–5 V logic supply, allowing separation of digital control noise from analog signal paths. At 12 V single supply, RDS(on) is 17 Ω; at ±5 V dual supply, it is 20 Ω. These configurations are explicitly validated in the Vishay DG411L/DG412L/DG413L datasheet (Doc #71397, Rev F).
How does the DG412LDQ differ from the DG411LDQ in control logic?
The DG412LDQ uses inverted control logic relative to the DG411LDQ: a logic '0' on INx turns the corresponding switch ON, while a logic '1' turns it OFF. This is confirmed in the Truth Table on page 1 of the DG411L/DG412L/DG413L datasheet (Doc #71397). Both share identical pinout, RDS(on), switching speed, and package - making them functionally complementary rather than drop-in replacements.
What is the maximum analog signal voltage the DG412LDQ can handle?
The DG412LDQ supports analog signals from 0 V to V+ in single-supply mode (e.g., 0–12 V) or from V− to V+ in dual-supply mode (e.g., −5 V to +5 V), as specified in the Analog Signal Range parameter (VANALOG) on page 3 of the datasheet. Exceeding these limits triggers internal clamp diodes; forward current must be limited to 30 mA continuous or 100 mA pulsed per terminal to avoid damage.
Does the DG412LDQ require external pull-up or pull-down resistors on its control inputs?
No, the DG412LDQ does not require external pull-up or pull-down resistors. Its digital inputs have guaranteed logic thresholds (VIL ≤ 0.8 V, VIH ≥ 2.4 V) and low input current (±1.5 µA max), enabling direct connection to standard CMOS or TTL outputs. Input current specs (IIL, IIH) are verified across −40 °C to +85 °C in the datasheet's Digital Control section (page 3).
Is the DG412LDQ RoHS compliant and lead-free?
Yes, the DG412LDQ is RoHS compliant and lead-free. The "-DQ" suffix denotes the 16-pin TSSOP package, and the datasheet states "RoHS COMPLIANT" on page 2 with footnote * clarifying that Pb-containing terminations are not RoHS compliant but exemptions may apply - confirming that the standard DG412LDQ variant meets RoHS Directive 2011/65/EU without exemption reliance.
DG412LDQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- 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-TSSOP
DG412LDQ FAQ
1.How can I place an order for DG412LDQ through Aetrix?
Please submit a Request for Quotation (RFQ) for DG412LDQ 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 DG412LDQ reliable?
The price and inventory of DG412LDQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG412LDQ is usually 5 days.
3.What payment methods are accepted for DG412LDQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG412LDQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG412LDQ?
DG412LDQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG412LDQ 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 DG412LDQ?
For technical support, including DG412LDQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG412LDQ requirements.
6.How does Aetrix verify that DG412LDQ is sourced from the original manufacturer or authorized distributors?
All DG412LDQ 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 DG412LDQ meets industry standards.
7.What is the process for return or replacement of DG412LDQ?
All DG412LDQ units undergo pre-shipment inspection (PSI). If there is an issue with DG412LDQ, 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 DG412LDQ part is unused and in its original packaging.
Return procedure for DG412LDQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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